Vonage
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Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
Join our growing group at Vonage, where we build cutting-edge web applications that power real-time communication experiences used by people every day. We're a diverse team passionate about technology and innovation — and a place where many of today's team leads and architects started out as developers, just like you.
Our team sits at the heart of Vonage's product, developing communication solutions deployed across multiple platforms. We build modern, responsive, high-performance front-end applications that handle real-time events at scale — work that directly shapes how businesses and their customers connect. What we do matters: every feature we ship improves the experience of thousands of users relying on Vonage to communicate.
We collaborate closely with designers, product managers, and engineers across the company, and we genuinely value creativity, collaboration, and having fun along the way.
Your key responsibilities:
You’ll lead front-end development for large-scale, real-time applications. You’ll design and implement intuitive, reliable, and performant user interfaces, working end-to-end with designers and backend teams. You’ll help define front-end best practices, mentor others, and drive technical decisions to keep our stack modern and maintainable.
Main tech stack:
Vue.js, JavaScript, TypeScript, Node.js, NestJS, Java, AWS, K8s, SQL
What you'll bring
Required:
- 4+ years of front-end or full-stack development experience with strong focus on modern JavaScript and TypeScript
- Expertise in modern web frameworks - preferably Vue
- Solid understanding of responsive design and performance optimization
- Experience leading projects and mentoring developers
- Experience with CI/CD pipelines for automated testing and deployment
- Strong collaboration and communication skills
Experience we consider a plus:
- Familiarity with backend technologies (Node.js, microservices, cloud) is a plus
How you’ll benefit:
- Discretionary Time Off
- Private Medical Healthcare
- Pension scheme
- Ericsson support line
- Hybrid work
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KF1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
You'll be the quality champion for our mission-critical voice platform—working 70% on automation and 30% on creative manual testing. This is a technical, hands-on role where you'll build test frameworks, support engineers, and ensure our SIP/voice systems work flawlessly. Perfect for someone eager to grow in automation, AWS, and voice technologies.
Your key responsibilities:
Build & evolve automation (your main focus)
- Design and maintain Python/SIPssert/SIPP-based test frameworks for voice platform validation
- Create CI/CD pipelines with GitHub Actions for continuous testing
- Write automated test suites for SIP protocols, call flows, and carrier integrations
- Develop monitoring automation with AWS and Grafana to catch issues early
- Improve test infrastructure—speed, reliability, and coverage
- Participate in early system design, providing valuable input on early architectural decisions phases
- Own, triage, investigate and help with resolution and validation of production defects or early stage malfunctions during development
Test what automation can't
- Manually validate complex voice scenarios and call quality
- Run exploratory and chaos testing to find edge cases
- Analyze SIP call flows using Wireshark, VoipMonitor etc
- Perform performance testing under real-world conditions
Collaborate & support the team
- Partner with developers on test strategies and code reviews
- Investigate production issues using logs, traces, and packet captures
- Champion quality best practices and shift-left testing
- Document findings and share knowledge with the team
What you'll bring
Must-haves:
- SIP protocol knowledge (call flows, signaling)
- 3+ years QA experience (manual + automation)
- 2+ years test automation framework development
- Network troubleshooting tools (Wireshark, tcpdump, VoipMonitor)
- AWS basics and cloud platform familiarity
Nice to have (we'll help you learn!):
- Python or another programming language
- Ribbon SBC/SLB/PSX, OpenSIPs, or SIPp platforms
- Docker, Grafana, GitHub Actions
- RTP, SRTP, VOIP protocols
- MySQL, DevOps tools (Ansible, Terraform)
You're a great fit if you:
- Love building automation and improving test frameworks
- Are curious about voice/network technologies
- Think creatively about testing challenges
- Enjoy collaborating with engineers
- Have an improvement mindset and eagerness to learn
How you’ll benefit:
In addition to providing exciting work, career advancement opportunities, and a collaborative work environment, Vonage provides competitive pay and benefits including Discretionary Unlimited Time off, Medical, Dental & Vision Insurance and 401(k) + more.
Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI#LI-KF1-KF1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Why this role matters:
The Engineering team at Vonage is a fast growing group of talented engineers. Java Developers here face multiple challenges associated with high performance, distributed systems, and processing large volumes of data in real time.
Our Engineers work on an exciting mix of both greenfield and existing projects, giving them an opportunity to explore new technologies.
IF THIS SOUNDS LIKE YOU, CONTINUE READING BELOW…….
What you will do:
You'll work on end-to-end projects in a full-stack role, aligned with your skills and career goals. As a part of your job, you will be charged with designing, researching, developing, and testing the functional and non-functional areas.
We design and implement new projects while constantly making sure we support large scales of data and traffic, backward and upward compatibility, and more.
Requirements
- 3+ years of experience in back-end development working with Java, Spring boot and Microservices
Experience with modern web frameworks, primarily Java. Experience with Kafka ,Redis and MongoDB.
- Extensive experience with cloud technologies like AWS
Good to have experience with node.js , Python
- A familiarity with SQL and NoSQL databases
- An understanding of Object Oriented Design and standard design patterns.
- Demonstrated proficiency in designing, developing, and deploying microservices-based applications. Ability to implement scalable, loosely coupled, and maintainable microservices.
- Having experience in implementing CI/CD pipelines for automated testing, building, and deploying applications.
- Enjoy working in a fast-paced environment
- Able to work collaboratively within different teams and with differing levels of seniority
What you will bring:
- Work closely with cross-functional teams such as Development, Operations, and Product Management to ensure seamless integration of new features and services with a focus on reliability, scalability, and performance
- Experience with back-end technologies
- Good knowledge and understanding of client-side architecture
- Capable of managing time well and working efficiently and independently
- Ability to collaborate with multi-functional teams
- Excellent communication skills
Nice to Have
- Bachelor's or Master's degree in CS or related field/experience
- Experience in third party integration like Microsoft team, Destiny
- Experience in Copilot and Copilot CLI
#LI-CK1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What you will do:
You'll work on end-to-end projects in a full-stack role, aligned with your skills and career goals. As a part of your job, you will be charged with designing, researching, developing, and testing the functional and non-functional areas.
We design and implement new projects while constantly making sure we support large scales of data and traffic, backward and upward compatibility, and more.
Requirements
- Min 6+ years of experience in full-stack development using JavaScript and TypeScript
- Strong experience with modern web frameworks, particularly Vue.js and Nest.Js
- Experience with AngularJS or React.js is also acceptable
- Extensive hands-on experience with AWS cloud technologies
- Solid backend development experience using Node.js
- Demonstrated proficiency in designing, developing, and deploying microservices-based applications. Ability to architect and implement scalable, loosely coupled, and maintainable microservices.
- Having experience in implementing CI/CD pipelines for automated testing, building, and deploying applications.
- Ability to lead end-to-end projects, working with other team members across the world
- Deep understanding of system architecture , and distributed systems
- Enjoy working in a fast-paced environment
- Able to work collaboratively within different teams and with differing levels of seniority
What you will bring:
- Work closely with cross-functional teams such as Development, Operations, and Product Management to ensure seamless integration of new features and services with a focus on reliability, scalability, and performance
- Experience with back-end technologies
- Good knowledge and understanding of client-side architecture
- Capable of managing time well and working efficiently and independently
- Ability to collaborate with multi-functional teams
- Excellent communication skills
Nice to Have
- Bachelor's or Master's degree in CS or related field/experience
#LI-CK1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
Authentication and identity are the front door to every Vonage product — and the Cerberus team is the engineering team that keeps that door secure, reliable, and scalable for hundreds of thousands of business users worldwide. Sitting at the heart of the Vonage Business Communications and Vonage Contact Center platforms, we own the full identity stack — OAuth 2.0 / OIDC, SSO, MFA, SCIM, RBAC/ABAC, fraud detection, and more — processing hundreds of thousands of requests per minute in production. This is not a supporting role; it is core infrastructure where a single decision can affect the security and availability of Vonage's entire product suite. As a Software Engineer joining a team of 6 senior engineers, you will take end-to-end ownership of mission-critical microservices, contribute to the modernization of the VCC identity platform, and help shape the technical direction of a fast-moving, security-first team — with real impact visible at scale from day one.
Your key responsibilities:
-
Design, develop, and maintain authentication and authorization microservices (backend-heavy, full-stack) serving the VBC and VCC platforms
-
Take full ownership of features end-to-end — from requirement kick-off and solution design through implementation, code review, testing, production deployment, and post-deploy monitoring
-
Participate actively in Agile ceremonies — daily stand-ups, sprint planning, retrospectives, and design discussions — contributing concrete technical insights and surfacing risks early
-
Manage production deployments using CI/CD pipelines (GitHub Actions / Bolt), including smoke tests, E2E test execution, log analysis (Kibana / Grafana), and incident response
-
Implement and maintain security-critical flows including OAuth 2.0, OIDC, SAML 2.0, JWT, MFA, passkey/FIDO, SCIM, and inter-service authentication patterns
-
Write and maintain technical documentation — architecture decision records, playbooks, runbooks, and knowledge-transfer materials
-
Participate in on-call rotation (OpsGenie), responding to production alerts, investigating issues, and driving root cause analysis
-
Leverage AI-assisted development tools (e.g., GitHub Copilot, Claude Code) to enhance personal productivity, code quality, and delivery speed.
What you'll bring
Required:
- 5+ years of professional software engineering experience, with a strong track record of delivering production-quality software in a team environment
-
Full-Stack developer with a strong server-side orientation — comfortable owning backend services while able to contribute to frontend when needed
-
Proficiency in Node.js — ability to design, build, and maintain scalable backend services in JavaScript/TypeScript
-
Hands-on AWS experience — working knowledge of core AWS services (EKS/Kubernetes, EC2, Secrets Manager, WAF, S3, CloudFront, Lambda, ElastiCache)
-
Microservices architecture — experience designing and operating distributed microservice systems, including service-to-service communication, event-driven patterns (Kafka), and API design
-
PostgreSQL / relational databases — proficiency in schema design, query optimization, and database best practices
-
AI-augmented development — active user of AI coding assistants (GitHub Copilot, Claude Code, Cursor, or equivalent) as part of everyday development workflow
- Strong software engineering fundamentals — SOLID principles, design patterns, clean code, unit and integration testing.
Experience we consider a plus:
- Authentication & Authorization deep knowledge — hands-on experience implementing OAuth 2.0, OIDC, SAML, JWT, MFA, SSO, SCIM, or RBAC/ABAC systems
-
NestJS — experience building backend services with the NestJS framework (the team's emerging standard for VCC services)
-
DevOps practices — familiarity with CI/CD pipelines, GitHub Actions, infrastructure-as-code (Terraform / CloudFormation / Helm charts), and Kubernetes manifests
- C# and/or Java— working knowledge of either language, useful for contributing to legacy components and cross-team integrations.
How you’ll benefit:
- Discretionary Time Off
- Private Medical Healthcare
- Pension scheme
- Ericsson support line
- Hybrid work
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process.
#LI-KF1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Why this role matters:
We are looking for an experienced Core Voice Manager to lead a world-class team responsible for maintaining and evolving our enterprise voice infrastructure. This role involves overseeing global operations, managing on-call support rotations, and ensuring exceptional call quality and reliability across all voice platforms. This position is ideal for a professional who thrives at the intersection of voice technology, operations, and innovation.
Your key responsibilities:
-
Lead and mentor a global voice operations team focused on reliability, performance, and scalability
-
Manage daily operations, including incident response and on-call coordination
-
Configure, maintain, and troubleshoot SBCs, policy servers, and other voice infrastructure components
-
Analyze SIP signaling and call flows to identify issues and implement fixes
-
Collaborate with cross-functional partners (Network, Cloud, Security, Engineering) to deliver end-to-end voice solutions
-
Partner with vendors like Ribbon for advanced troubleshooting, upgrades, and platform enhancements
-
Strengthen our voice systems with automation, monitoring, and proactive performance improvements
-
Ensure all systems align with cloud and enterprise security best practices
What you'll bring
- 7+ years of strong technical experience (ideally managing large-scale voice operations or DevOps teams)
-
4+ years of experience managing engineering teams
-
Knowledge of SIP stack, call flows, and voice troubleshooting
-
Hands-on experience with SBCs and policy servers—strong preference for Ribbon platform experience
-
Proven background in on-call operations and incident management
-
Solid understanding of AWS cloud platform
-
Familiarity with voice security practices and compliance frameworks
Experience we consider a plus:
-
Experience automating voice operations or implementing CI/CD pipelines
-
Familiarity with observability tools (Grafana)
How you’ll benefit:
Helping others can only be achieved with the right people and the right resources. That’s why we’ve created a workplace culture that is supportive, encouraging, respectful, diverse and progressive. We think about the future as much as we think about the present. We offer our people a competitive salary and flexibility where they need it.
- Company Bonus
- Medical, Dental, and Vision Coverage Options
- 401(k) Savings Plan
- Company-Paid Basic Life and AD&D Insurance
- Maternity/Parental Leave
- Health Savings Account (HSA)
- Voluntary Supplemental Insurance
- Lifestyle Benefits
- Volunteer Time Off (VTO)
Disclaimer: The posted range represents the good faith salary for this role at the time of posting. Final compensation is determined by factors including (but not limited to) geographic location, relevant experience, specific skill sets, and internal equity.
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
About the Role:
We're looking for an experienced FreeSWITCH Developer / VoIP Software Engineer to design, develop, and maintain the telephony solutions that power Vonage's call processing platform. You'll build real-time voice communication systems that handle millions of calls, developing features like call processing, recording, voicemail, conferencing, and external service integrations. This is a critical role where your work directly impacts business communications for customers worldwide.
What You'll Do
Core Responsibilities
- Build scalable telephony systems — Design and develop distributed, high-volume production telephony applications for our UCaaS platform that handle real-time voice traffic at scale
- Develop custom FreeSWITCH solutions — Create custom modules, dialplan configurations, and ESL (Event Socket Library) integrations for advanced call control and automation
- Deliver advanced telephony features — Implement call recording, voicemail transcription, fax processing, audio streaming, and other mission-critical voice features
- Rapid prototyping to production — Build proof-of-concepts quickly and evolve them into production-ready, maintainable code
- Drive technical innovation — Evaluate emerging telephony technologies and recommend architectural improvements that enhance our platform capabilities
- Mentor and lead — Guide team members on design patterns, best practices, and telephony architecture decisions
Day-to-Day Collaboration
- Participate in the full agile development lifecycle: sprint planning, design reviews, standups, and demos
- Respond promptly to production incidents affecting customers and business operations
- Work independently on end-to-end feature delivery while contributing to broader team goals
- Partner closely with Product Management, QA, and Operations teams to deliver cohesive solutions
- Communicate progress, blockers, and technical decisions clearly with engineering leadership
What You'll Bring
Required Experience & Skills
Telephony & VoIP Expertise (Must-Have)
- 8+ years of software development experience
- 5+ years hands-on experience with telephony platforms: FreeSWITCH, Asterisk, or similar open-source PBX systems
- Deep understanding of:
- SIP (Session Initiation Protocol) and RTP protocols
- VoIP architecture and NAT traversal techniques (STUN, ICE, TURN)
- Audio codecs (G.711, Opus, etc.)
- Dialplan development and call flow design
Programming & Development
- Strong proficiency in Java, C/C++, Python, and SQL
- Experience with CI/CD pipelines and modern development workflows
- Infrastructure as Code practices
- Containerization with Docker and Kubernetes
Cloud & Infrastructure
- Hands-on experience with AWS services: EC2, EKS, Lambda, S3, SNS, SQS, CloudFront
- Linux systems expertise: performance tuning, networking, file systems
- Database experience with:
- Relational: MySQL, PostgreSQL
- NoSQL: Redis, MongoDB
Problem-Solving & Debugging
- Proven troubleshooting skills in complex, distributed production environments
- Systematic debugging approach for real-time communication systems
- Experience analyzing performance bottlenecks and system failures
Nice to Have
- Experience with WebRTC
- Familiarity with Kamailio, OpenSIPS, or other SIP proxies
- Knowledge of PSTN interconnection and carrier integrations
- Previous UCaaS or CPaaS platform experience
- Contributions to open-source telephony projects
- Experience with monitoring and observability tools (Prometheus, Grafana, Datadog)
Why This Role Matters
As a FreeSWITCH Developer at Vonage, you'll work on voice infrastructure that powers critical business communications globally. Your code will directly enable features that millions of users depend on daily, and you'll have the opportunity to shape the architecture of next-generation voice platforms.
Work Style
- Ownership mindset — Take features from concept to production
- Collaborative approach — Work across teams while driving your work independently
- Customer focus — Balance feature velocity with reliability and user experience
- Continuous improvement — Stay current with telephony trends and share knowledge with the team
#LI-CK1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
We're looking for an experienced FreeSWITCH Developer / VoIP Software Engineer to design, develop, and maintain the telephony solutions that power Vonage's call processing platform. You'll build real-time voice communication systems that handle millions of calls, developing features like call processing, recording, voicemail, conferencing, and external service integrations. This is a critical role where your work directly impacts business communications for customers worldwide.
What You'll Do
Core Responsibilities
- Build scalable telephony systems — Design and develop distributed, high-volume production telephony applications for our UCaaS platform that handle real-time voice traffic at scale
- Develop custom FreeSWITCH solutions — Create custom modules, dialplan configurations, and ESL (Event Socket Library) integrations for advanced call control and automation
- Deliver advanced telephony features — Implement call recording, voicemail transcription, fax processing, audio streaming, and other mission-critical voice features
- Rapid prototyping to production — Build proof-of-concepts quickly and evolve them into production-ready, maintainable code
- Drive technical innovation — Evaluate emerging telephony technologies and recommend architectural improvements that enhance our platform capabilities
- Mentor and lead — Guide team members on design patterns, best practices, and telephony architecture decisions
Day-to-Day Collaboration
- Participate in the full agile development lifecycle: sprint planning, design reviews, standups, and demos
- Respond promptly to production incidents affecting customers and business operations
- Work independently on end-to-end feature delivery while contributing to broader team goals
- Partner closely with Product Management, QA, and Operations teams to deliver cohesive solutions
- Communicate progress, blockers, and technical decisions clearly with engineering leadership
What You'll Bring
Required Experience & Skills
Telephony & VoIP Expertise (Must-Have)
- 6+ years of software development experience
- 3+ years hands-on experience with telephony platforms: FreeSWITCH, Asterisk, or similar open-source PBX systems
- Deep understanding of:
- SIP (Session Initiation Protocol) and RTP protocols
- VoIP architecture and NAT traversal techniques (STUN, ICE, TURN)
- Audio codecs (G.711, Opus, etc.)
- Dialplan development and call flow design
Programming & Development
- Strong proficiency in Java, C/C++, Python, and SQL
- Experience with CI/CD pipelines and modern development workflows
- Infrastructure as Code practices
- Containerization with Docker and Kubernetes
Cloud & Infrastructure
- Hands-on experience with AWS services: EC2, EKS, Lambda, S3, SNS, SQS, CloudFront
- Linux systems expertise: performance tuning, networking, file systems
- Database experience with:
- Relational: MySQL, PostgreSQL
- NoSQL: Redis, MongoDB
Problem-Solving & Debugging
- Proven troubleshooting skills in complex, distributed production environments
- Systematic debugging approach for real-time communication systems
- Experience analyzing performance bottlenecks and system failures
Nice to Have
- Experience with WebRTC
- Familiarity with Kamailio, OpenSIPS, or other SIP proxies
- Knowledge of PSTN interconnection and carrier integrations
- Previous UCaaS or CPaaS platform experience
- Contributions to open-source telephony projects
- Experience with monitoring and observability tools (Prometheus, Grafana, Datadog)
Why This Role Matters
As a FreeSWITCH Developer at Vonage, you'll work on voice infrastructure that powers critical business communications globally. Your code will directly enable features that millions of users depend on daily, and you'll have the opportunity to shape the architecture of next-generation voice platforms.
Work Style
- Ownership mindset — Take features from concept to production
- Collaborative approach — Work across teams while driving your work independently
- Customer focus — Balance feature velocity with reliability and user experience
- Continuous improvement — Stay current with telephony trends and share knowledge with the team
#LI-CK1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Why this role matters:
We are looking for a skilled Software Development Engineer in Test (SDET) to join our engineering team. You will be responsible for designing, building, and maintaining automated test frameworks and SDLC, with focus on Playwright-based test automation across UI and APIs for the 3th Party Integration.
This role combines strong programming skills with a quality-first mindset, ensuring our applications are reliable, scalable, and production-ready.
Your key responsibilities:
- Collaborate closely with developers, product managers, and QA to ensure quality across the SDLC
- Build and maintain test automation for REST APIs and third-party integrations (e.g., CRM systems)
- Design, develop, and maintain automated test frameworks using Playwright
- Implement end-to-end (E2E), integration, and API tests
- Integrate automated tests into CI/CD pipelines (Jenkins, GitHub Actions)
- Contribute to shift-left testing practices and quality engineering initiatives
- Use AI-assisted tools (e.g., GitHub Copilot) to accelerate test development
- Support performance and reliability testing where applicable
What you'll bring
Required:
- Hands-on experience as an SDET / Automation Engineer (mid-level)
- Strong experience with Playwright for UI test automation
- Solid programming skills in TypeScript or JavaScript
- Experience with API testing (REST, Postman, or similar tools)
- Understanding of test design patterns and automation best practices
- Experience integrating tests into CI/CD pipelines (Jenkins, GitHub Actions)
- Familiarity with version control systems (Git)
- Experience working in Agile/Scrum environments
- Strong debugging and problem-solving skills
- Understanding of software testing principles (functional, regression, integration)
Experience we consider a plus:
- Knowledge of contract testing (e.g., Pact)
- Knowledge of cloud platforms (AWS, Azure, or GCP)
- Familiarity with ServiceNow or enterprise SaaS platforms
- Experience with observability tools (Grafana, ELK, etc.)
- Exposure to AI-driven testing approaches or self-healing tests
How you’ll benefit:
- Local benefits
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
- Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms.
- Lead, train, and coordinate a distributed guild of SDETs across multiple feature teams, guiding them to build, maintain, and execute performance scripts (k6) within their fractional sprint capacity.
- Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript, focusing entirely on APIs, databases, and infrastructure.
- Implement and manage production traffic replay strategies (e.g., GoReplay) and complex multi-tenant test data generation to accurately recreate realistic production contention and load profiles.
- Own and drive performance, load, stress, endurance, scalability, and resilience testing, including chaos engineering practices (e.g., using AWS Fault Injection Simulator).
- Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ), and high-throughput distributed systems under production-like conditions.
- Integrate performance testing into CI/CD pipelines, enabling continuous performance validation, shift-left practices, and automated PR blocking for latency degradation.
- Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM) to monitor, analyse, and troubleshoot system performance.
- Establish performance benchmarks, SLAs, SLOs, and error budgets aligned with business and system requirements.
- Collaborate with architecture and data teams to identify bottlenecks, validate database architectures (e.g., MySQL, Tungsten), and present evidence-based investment proposals.
- Analyse and optimise performance across both legacy monolith systems (requiring integrated load testing) and modern microservices architectures.
What You Will Bring
- Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams (e.g., conducting code reviews, guiding SDETs through framework adoption, and managing cross-team test schedules).
- Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway) with a focus on scalability and performance optimisation.
- Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling), including test design, execution, and analysis at scale.
- Hands-on experience with production traffic shadowing or replay tools (such as GoReplay).
- Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs.
- Solid backend programming and scripting skills in Python, Java, or TypeScript to build custom performance frameworks and tooling.
- Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles.
- Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions) and enabling continuous performance feedback loops.
- Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM) for performance analysis and diagnostics.
- Experience working within Agile environments and translating performance insights into actionable engineering outcomes.
Required
- Demonstrable hands-on experience in backend performance engineering and automation using Python, Java, or TypeScript.
- Proven track record of performance, scalability, and resilience testing in AWS-based cloud-native systems.
- Strong experience designing large-scale performance test strategies and leading QA/SDET teams to execute them.
- Deep understanding of API performance testing, integration testing, and system-level non-functional validation.
- Solid grasp of system architecture, distributed systems behaviour, and non-functional testing methodologies.
- Experience with observability, monitoring, and log analysis tools.
- Familiarity with RESTful APIs and event-driven systems.
Application Requirements
- Updated CV clearly demonstrating performance engineering leadership, cross-team coordination, AWS expertise, and backend automation frameworks.
- Summary of performance testing frameworks, tools (e.g., k6, GoReplay), and CI/CD methodologies implemented.
- Detailed examples of performance testing engagements (scale, environments, bottlenecks identified, business impact, improvements delivered).
- Evidence of driving performance strategy, mentoring QA/SDET teams, and influencing architecture.
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
- Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms.
- Lead, train, and coordinate a distributed guild of SDETs across multiple feature teams, guiding them to build, maintain, and execute performance scripts (k6) within their fractional sprint capacity.
- Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript, focusing entirely on APIs, databases, and infrastructure.
- Implement and manage production traffic replay strategies (e.g., GoReplay) and complex multi-tenant test data generation to accurately recreate realistic production contention and load profiles.
- Own and drive performance, load, stress, endurance, scalability, and resilience testing, including chaos engineering practices (e.g., using AWS Fault Injection Simulator).
- Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ), and high-throughput distributed systems under production-like conditions.
- Integrate performance testing into CI/CD pipelines, enabling continuous performance validation, shift-left practices, and automated PR blocking for latency degradation.
- Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM) to monitor, analyse, and troubleshoot system performance.
- Establish performance benchmarks, SLAs, SLOs, and error budgets aligned with business and system requirements.
- Collaborate with architecture and data teams to identify bottlenecks, validate database architectures (e.g., MySQL, Tungsten), and present evidence-based investment proposals.
- Analyse and optimise performance across both legacy monolith systems (requiring integrated load testing) and modern microservices architectures.
What You Will Bring
- Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams (e.g., conducting code reviews, guiding SDETs through framework adoption, and managing cross-team test schedules).
- Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway) with a focus on scalability and performance optimisation.
- Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling), including test design, execution, and analysis at scale.
- Hands-on experience with production traffic shadowing or replay tools (such as GoReplay).
- Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs.
- Solid backend programming and scripting skills in Python, Java, or TypeScript to build custom performance frameworks and tooling.
- Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles.
- Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions) and enabling continuous performance feedback loops.
- Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM) for performance analysis and diagnostics.
- Experience working within Agile environments and translating performance insights into actionable engineering outcomes.
Required
- Demonstrable hands-on experience in backend performance engineering and automation using Python, Java, or TypeScript.
- Proven track record of performance, scalability, and resilience testing in AWS-based cloud-native systems.
- Strong experience designing large-scale performance test strategies and leading QA/SDET teams to execute them.
- Deep understanding of API performance testing, integration testing, and system-level non-functional validation.
- Solid grasp of system architecture, distributed systems behaviour, and non-functional testing methodologies.
- Experience with observability, monitoring, and log analysis tools.
- Familiarity with RESTful APIs and event-driven systems.
Application Requirements
- Updated CV clearly demonstrating performance engineering leadership, cross-team coordination, AWS expertise, and backend automation frameworks.
- Summary of performance testing frameworks, tools (e.g., k6, GoReplay), and CI/CD methodologies implemented.
- Detailed examples of performance testing engagements (scale, environments, bottlenecks identified, business impact, improvements delivered).
- Evidence of driving performance strategy, mentoring QA/SDET teams, and influencing architecture.
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
- Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms.
- Lead, train, and coordinate a distributed guild of SDETs across multiple feature teams, guiding them to build, maintain, and execute performance scripts (k6) within their fractional sprint capacity.
- Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript, focusing entirely on APIs, databases, and infrastructure.
- Implement and manage production traffic replay strategies (e.g., GoReplay) and complex multi-tenant test data generation to accurately recreate realistic production contention and load profiles.
- Own and drive performance, load, stress, endurance, scalability, and resilience testing, including chaos engineering practices (e.g., using AWS Fault Injection Simulator).
- Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ), and high-throughput distributed systems under production-like conditions.
- Integrate performance testing into CI/CD pipelines, enabling continuous performance validation, shift-left practices, and automated PR blocking for latency degradation.
- Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM) to monitor, analyse, and troubleshoot system performance.
- Establish performance benchmarks, SLAs, SLOs, and error budgets aligned with business and system requirements.
- Collaborate with architecture and data teams to identify bottlenecks, validate database architectures (e.g., MySQL, Tungsten), and present evidence-based investment proposals.
- Analyse and optimise performance across both legacy monolith systems (requiring integrated load testing) and modern microservices architectures.
What You Will Bring
- Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams (e.g., conducting code reviews, guiding SDETs through framework adoption, and managing cross-team test schedules).
- Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway) with a focus on scalability and performance optimisation.
- Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling), including test design, execution, and analysis at scale.
- Hands-on experience with production traffic shadowing or replay tools (such as GoReplay).
- Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs.
- Solid backend programming and scripting skills in Python, Java, or TypeScript to build custom performance frameworks and tooling.
- Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles.
- Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions) and enabling continuous performance feedback loops.
- Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM) for performance analysis and diagnostics.
- Experience working within Agile environments and translating performance insights into actionable engineering outcomes.
Required
- Demonstrable hands-on experience in backend performance engineering and automation using Python, Java, or TypeScript.
- Proven track record of performance, scalability, and resilience testing in AWS-based cloud-native systems.
- Strong experience designing large-scale performance test strategies and leading QA/SDET teams to execute them.
- Deep understanding of API performance testing, integration testing, and system-level non-functional validation.
- Solid grasp of system architecture, distributed systems behaviour, and non-functional testing methodologies.
- Experience with observability, monitoring, and log analysis tools.
- Familiarity with RESTful APIs and event-driven systems.
Application Requirements
- Updated CV clearly demonstrating performance engineering leadership, cross-team coordination, AWS expertise, and backend automation frameworks.
- Summary of performance testing frameworks, tools (e.g., k6, GoReplay), and CI/CD methodologies implemented.
- Detailed examples of performance testing engagements (scale, environments, bottlenecks identified, business impact, improvements delivered).
- Evidence of driving performance strategy, mentoring QA/SDET teams, and influencing architecture.
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
- Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms.
- Lead, train, and coordinate a distributed guild of SDETs across multiple feature teams, guiding them to build, maintain, and execute performance scripts (k6) within their fractional sprint capacity.
- Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript, focusing entirely on APIs, databases, and infrastructure.
- Implement and manage production traffic replay strategies (e.g., GoReplay) and complex multi-tenant test data generation to accurately recreate realistic production contention and load profiles.
- Own and drive performance, load, stress, endurance, scalability, and resilience testing, including chaos engineering practices (e.g., using AWS Fault Injection Simulator).
- Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ), and high-throughput distributed systems under production-like conditions.
- Integrate performance testing into CI/CD pipelines, enabling continuous performance validation, shift-left practices, and automated PR blocking for latency degradation.
- Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM) to monitor, analyse, and troubleshoot system performance.
- Establish performance benchmarks, SLAs, SLOs, and error budgets aligned with business and system requirements.
- Collaborate with architecture and data teams to identify bottlenecks, validate database architectures (e.g., MySQL, Tungsten), and present evidence-based investment proposals.
- Analyse and optimise performance across both legacy monolith systems (requiring integrated load testing) and modern microservices architectures.
What You Will Bring
- Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams (e.g., conducting code reviews, guiding SDETs through framework adoption, and managing cross-team test schedules).
- Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway) with a focus on scalability and performance optimisation.
- Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling), including test design, execution, and analysis at scale.
- Hands-on experience with production traffic shadowing or replay tools (such as GoReplay).
- Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs.
- Solid backend programming and scripting skills in Python, Java, or TypeScript to build custom performance frameworks and tooling.
- Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles.
- Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions) and enabling continuous performance feedback loops.
- Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM) for performance analysis and diagnostics.
- Experience working within Agile environments and translating performance insights into actionable engineering outcomes.
Required
- Demonstrable hands-on experience in backend performance engineering and automation using Python, Java, or TypeScript.
- Proven track record of performance, scalability, and resilience testing in AWS-based cloud-native systems.
- Strong experience designing large-scale performance test strategies and leading QA/SDET teams to execute them.
- Deep understanding of API performance testing, integration testing, and system-level non-functional validation.
- Solid grasp of system architecture, distributed systems behaviour, and non-functional testing methodologies.
- Experience with observability, monitoring, and log analysis tools.
- Familiarity with RESTful APIs and event-driven systems.
Application Requirements
- Updated CV clearly demonstrating performance engineering leadership, cross-team coordination, AWS expertise, and backend automation frameworks.
- Summary of performance testing frameworks, tools (e.g., k6, GoReplay), and CI/CD methodologies implemented.
- Detailed examples of performance testing engagements (scale, environments, bottlenecks identified, business impact, improvements delivered).
- Evidence of driving performance strategy, mentoring QA/SDET teams, and influencing architecture.
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
- Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms.
- Lead, train, and coordinate a distributed guild of SDETs across multiple feature teams, guiding them to build, maintain, and execute performance scripts (k6) within their fractional sprint capacity.
- Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript, focusing entirely on APIs, databases, and infrastructure.
- Implement and manage production traffic replay strategies (e.g., GoReplay) and complex multi-tenant test data generation to accurately recreate realistic production contention and load profiles.
- Own and drive performance, load, stress, endurance, scalability, and resilience testing, including chaos engineering practices (e.g., using AWS Fault Injection Simulator).
- Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ), and high-throughput distributed systems under production-like conditions.
- Integrate performance testing into CI/CD pipelines, enabling continuous performance validation, shift-left practices, and automated PR blocking for latency degradation.
- Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM) to monitor, analyse, and troubleshoot system performance.
- Establish performance benchmarks, SLAs, SLOs, and error budgets aligned with business and system requirements.
- Collaborate with architecture and data teams to identify bottlenecks, validate database architectures (e.g., MySQL, Tungsten), and present evidence-based investment proposals.
- Analyse and optimise performance across both legacy monolith systems (requiring integrated load testing) and modern microservices architectures.
What You Will Bring
- Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams (e.g., conducting code reviews, guiding SDETs through framework adoption, and managing cross-team test schedules).
- Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway) with a focus on scalability and performance optimisation.
- Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling), including test design, execution, and analysis at scale.
- Hands-on experience with production traffic shadowing or replay tools (such as GoReplay).
- Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs.
- Solid backend programming and scripting skills in Python, Java, or TypeScript to build custom performance frameworks and tooling.
- Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles.
- Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions) and enabling continuous performance feedback loops.
- Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM) for performance analysis and diagnostics.
- Experience working within Agile environments and translating performance insights into actionable engineering outcomes.
Required
- Demonstrable hands-on experience in backend performance engineering and automation using Python, Java, or TypeScript.
- Proven track record of performance, scalability, and resilience testing in AWS-based cloud-native systems.
- Strong experience designing large-scale performance test strategies and leading QA/SDET teams to execute them.
- Deep understanding of API performance testing, integration testing, and system-level non-functional validation.
- Solid grasp of system architecture, distributed systems behaviour, and non-functional testing methodologies.
- Experience with observability, monitoring, and log analysis tools.
- Familiarity with RESTful APIs and event-driven systems.
Application Requirements
- Updated CV clearly demonstrating performance engineering leadership, cross-team coordination, AWS expertise, and backend automation frameworks.
- Summary of performance testing frameworks, tools (e.g., k6, GoReplay), and CI/CD methodologies implemented.
- Detailed examples of performance testing engagements (scale, environments, bottlenecks identified, business impact, improvements delivered).
- Evidence of driving performance strategy, mentoring QA/SDET teams, and influencing architecture.
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Why this role matters:
The team is responsible for multiple communication solutions across different platforms within Vonage.
We are currently in the process of building our next huge project. We’re creating the CHAT API solution, adding the ability to offer a complete chat capability that contains team messaging, SMS, mms, WhatsApp, email and Facebook domains into Vonage platform. The CHAT API is going to be used across the entire organization in various different products.
The team is working end to end on all aspects of the product - from UI to Backend and on maintaining the stack.
Our team is more than just colleagues; we're a community that thrives on collaboration, creativity, and, most importantly, having a good time together.
Your key responsibilities:
- Working on end-to-end projects in a full-stack backend oriented role, aligned with your skills and career goals.
- Taking a key role in building and leading the team from an Architecture perspective.
- Designing, researching, developing and testing the functional and non-functional areas.
- Onboarding and mentoring new team members.
- You will help build a reliable continuous improvement process and ensure efficient delivery at high level.
What you'll bring
Required:
- 4+ years of experience years as a full-stack/backend software engineer with Java, Typescript, Relational/Non relational databases and cloud solutions
- Expertise working on large scale complex software systems and leading delivery cycles.
- Experience working with multiple releases with Agile methodologies in a service or SaaS environment
- Experience with modern web frameworks such as Vue.JS / AngularJS / React
- Develop and implement strategies to improve system reliability, scalability, and performance while aligning with the company's overall goals and objectives
- Understanding of system architecture, and distributed systems
- Ability to manage a full application development cycle from requirements to production
- Great collaboration and English skills, working with other team members across the world
Experience we consider a plus:
- Bachelor's or Master's degree in Computer Science or related field
- Experience with Kafka, AWS, cloud infrastructure (K8S, EC2, ECS, Docker, Ansible) and CI/CD technologies (GitHub actions, Helm Chart, Argo CD)
- Development experience working with microservices
How you’ll benefit:
You’ll be joining a team of experienced engineers who love to share knowledge and grow together. This is a great opportunity to start your career in software development, working on real-world products that impact millions of users daily. You’ll be supported, mentored, and encouraged to contribute from day one.
Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process.
#LI-JM2
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
About the Role:
We’re seeking a Senior SIP/VoIP Engineer to design, operate, and enhance our global enterprise voice systems. You’ll play a hands-on role supporting carrier-grade voice infrastructure, ensuring call quality and uptime, and driving operational excellence. This position is ideal for someone who is fluent in SIP technologies, enjoys troubleshooting complex call flows, and thrives in collaborative, cross-functional environments.
Your key responsibilities:
-
Support and maintain voice infrastructure, including SBCs, policy servers, and voice gateways
-
Troubleshoot SIP signaling and call flow issues across global platforms
-
Participate in an on-call rotation and respond to high-severity incidents as needed
-
Work closely with DevOps, Cloud, Network, and Security teams to ensure reliable and secure service delivery
-
Partner with vendors for platform updates, tuning, and escalations
-
Implement and refine monitoring, alerting, and automation to improve operational efficiency
-
Contribute to the documentation, design, and continuous improvement of the voice environment
What you'll bring
Required:
-
7-10+ years of experience in voice engineering, operations or telecom infrastructure
-
Strong understanding of SIP stack architecture, call setup and troubleshooting methodologies
-
Hands-on experience with SBCs and policy servers (Ribbon experience required)
-
Familiarity with voice routing, QoS, and integration with cloud and on-prem systems
-
Experience supporting 24x7 operations, on-call support, and incident management
-
Knowledge of cloud environments (AWS, Azure) and security best practices
-
Excellent problem-solving skills and communication abilities for working with distributed teams
Experience we consider a plus:
-
Experience automating or scripting voice operations workflows
-
Familiarity with observability tools (Grafana)
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
We are an established team driving the innovation of our company’s core audio-call infrastructure. Our current mission is the new development of high-performance services that power real-time audio streaming for external processing, recording services, and external API integrations.
Your key responsibilities:
In this role, you will focus on building new, scalable features from the ground up. While we value full-stack capability, your primary impact will be in Backend and Cloud Engineering using .NET and AWS (ECS/EKS).
You will take ownership of the end-to-end development of new audio-processing logic and the APIs that expose these capabilities to the rest of the organization.
This is a hybrid role, offering the flexibility to work most of the time remotely. However, certain tasks will require in-person collaboration with team members. You should be prepared to attend on-site meetings (Tel-Aviv) occasionally to support key project milestones and ensure successful outcomes.
What you'll bring
- Backend Expertise: 3+ years of professional experience in software development, with a deep focus on C# and the .NET ecosystem.
- Frontend expertise: Working experience with JavaScript
- Containerization & Cloud: Hands-on experience building and scaling services within AWS, specifically using ECS or EKS.
- Systems Engineering Mindset: A proactive attitude toward building new products from scratch, with a focus on high-quality code and scalable design patterns.
- Communication: Strong English skills and the ability to collaborate effectively in a distributed, multicultural environment.
Experience we consider a plus:
- DevOps & Scripting: Experience with CI/CD automation and scripting (e.g., Python, Bash) to streamline development and deployment.
- Performance Analysis: Familiarity with tools and techniques for profiling and optimizing .NET applications in high-load environments.
- Node.js Knowledge: Ability to contribute to or integrate with Node.js-based services.
How you’ll benefit:
- Discretionary Time Off
- Private Medical Healthcare
- Pension scheme
- Ericsson support line
- Hybrid work
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-JM2
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Why this role matters:
We are looking for Software Engineers to work in the Call Center as a Service (CCaaS) Technology Team where you will be working on a global, multi-tenant, real-time service, with thousands of concurrent users. Your focus will be on developing the platform that directly enables and supports contact centre agents.
Your key responsibilities:
- Contribute to product improvement beyond code implementation by actively caring about the product and its users
- Create a performant, secure, scalable service that our customers will rave about
- Continuously improve and automate the monitoring and deployment of our cloud service
What you'll bring
Required:
- Bachelor’s degree in Computer Science, Electrical Engineering or related field/ or relevant experience
- Excellent communication skills, including writing, speaking and listening to effectively communicate with technical and non technical people
- 2+ years of relevant experience building Front End Applications
- Experience with TypeScript/JavaScript frameworks including Vue.js / React
- Knowledge about state management, e.g. experience with Pinia for centralized state
- Ability to build real-time applications; understanding of Web Sockets and REST API
Experience we consider a plus:
- 2+ years of relevant experience in full-stack development
- Knowledge of distributed system including messaging mechanism (Kafka / SNS)
- Experience with setting up and leveraging platform analytics, logging, and monitoring tools (e.g., Grafana, New Relic) to proactively identify and resolve production issues in real-time services.
- Ability to responsibly utilise AI tools to enhance development productivity and quality
How you’ll benefit:
- Local benefits
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
Join Vonage's Applications Architecture team and help shape how we handle data across our unified communications platform. You'll work with hundreds of engineers across product lines, setting the direction for data platforms that serve millions of users worldwide.
As a trusted advisor and facilitator, you'll guide engineering teams and product managers on data architecture decisions - helping us build scalable, multi-tenant data products while maintaining speed and quality. This is about strategic influence, not hands-on coding.
Your key responsibilities:
- Design and guide the software and data architecture for customer-facing data products across multiple systems in a multi-tenant environment
- Set architecture vision for analytics data platform and identify emerging technology trends
- Work directly with engineering teams and product managers to scope features and solve complex data challenges
- Engage and be an active member of the wide Apps architecture team
- Facilitate technical discussions and help teams make better architectural decisions across domains
- Establish and evangelize best practices, guidelines, and standards for data management
- Identifying and sponsoring technical improvements
- Champion the team's vision while empowering teams to own their implementation
What you'll bring
Your background:
- 10+ years of building Software and Data-heavy systems - you've seen what works (and what doesn't)
- Experience designing features that utilize AI/ ML
- You've built data products that actually scale
- Understanding of cloud infrastructure (we love AWS, but a great cloud experience translates)
- Fluent in one of the languages, like Python, .NET, JavaScript—you speak a developer language
Who you are:
- A natural communicator who influences without needing a title
- Self-directed - you see what needs doing and make it happen
- A pragmatic thinker who cuts through complexity to find elegant solutions
- Curious and energized by learning new technologies and approaches
- Comfortable with ambiguity and change (we're growing fast!)
- Someone who connects the dots between technical choices and business impact
What would make you stand out:
- You've been an architect or technical lead before and loved it
- You've worked with modern data tools: Kafka, Snowflake, Spark, Looker
- You know the telecom, SaaS, or unified comms space
- You've thrived in Agile/SAFe environments
- You've mentored engineers and watched them grow
- You have a bias for improvement - leaving things better than you found them is just how you work
How you’ll benefit:
- Discretionary Time Off
- Private Medical Healthcare
- Pension scheme
- Ericsson support line
- Hybrid work
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KF1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Your key responsibilities:
- Participate in the entire application development lifecycle with a strong focus on test automation
- Introduce and improve automated tests
- Maintain and improve automated test framework
- Define testing requirements in conjunction with software engineers and the product owner
- Identify opportunities for technical procedure and tool enhancements to drive production and development effectiveness
- Innovate in best automation and continuous testing practices by trying new frameworks and technologies on the market and recommending their use
What you'll bring:
Required:
- Familiarity with Playwright or similar test automation frameworks
- Experience in test management and managing test processes
- Experience with observability tooling such as Grafana and Kibana
- Familiarity with RESTful APIs and Postman, including creating collections and documentation
- Strong knowledge of quality assurance methodologies including functional, integration, acceptance, and unit testing
- Familiarity with version control systems like Git
- Technical inquisitiveness and a passion for driving quality
Experience we consider a plus:
- Experience troubleshooting and debugging end-to-end tests
- Ability to simulate complex multi-system scenarios using standard tools and frameworks
- Experience identifying opportunities for process and tool enhancements
- Demonstrated ability to learn and grow in technical roles
How you'll benefit:
- Attractive Discretionary Time Off
- Private Medical Insurance with optional dependent coverage
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KS1
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage
Join Vonage and help us innovate cloud communications for businesses worldwide!
Vonage's Applications:
Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.
Why this role matters:
Vonage is looking for a hands-on SDET (Mid–Senior Level) to strengthen automation engineering across our modern microservices-based communications platform.
This role is deeply technical and delivery-focused. You will design and implement scalable automation solutions across UI, API, performance, and mobile layers, ensuring quality is embedded throughout the SDLC.
As part of the QA Centre of Excellence (QA COE), you will collaborate with engineering squads to build reliable, CI/CD-ready automation frameworks and promote best practices in BDD, microservices testing, and observability.
Your key responsibilities:
- Design, develop, and maintain scalable test automation frameworks.
- Build UI automation using Playwright (TypeScript).
- Implement BDD practices using Cucumber/Gherkin.
- Generate structured reporting and living documentation using Serenity.
- Develop robust API automation for REST and GraphQL services.
- Contribute to mobile automation using Appium (Android/iOS).
- Ensure test frameworks are modular, maintainable, and optimised for parallel execution.
- Integrate automation into CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, CircleCI, or internal tools).
- Validate distributed systems across a microservices architecture.
- Implement: contract testing, schema validation, authentication/authorization testing and resilience/failure scenarios
- Contribute to SLA/SLO validation and service-level reliability checks.
- Collaborate with engineers to improve testability and observability.
- Develop and maintain performance and load tests using K6 (TypeScript).
- Integrate performance testing into CI/CD pipelines.
- Analyse performance metrics using: Grafana, Prometheus, AWS CloudWatch Datadog
- Partner with SRE and Platform teams to identify performance bottlenecks and reliability risks
Collaboration & Continuous Improvement
- Actively participate in Agile ceremonies.
- Work closely with Developers, DevOps, Product Owners, and Release teams.
- Maintain documentation in Confluence and track work in Jira.
- Provide visibility through Serenity reports and CI dashboards.
- Contribute to evolving QA engineering standards within the QA COE.
What you'll bring
Required:
- 5–8 years of experience in automation engineering or SDET roles.
- Strong hands-on experience with: Playwright (TypeScript), API automation (REST/GraphQL) and BDD frameworks (Cucumber/Gherkin)
- Experience working within AWS-based environments.
- Strong understanding of distributed systems, microservices testing.
- Experience integrating automation into CI/CD pipelines.
- Working knowledge of performance testing with K6.
- Strong coding, debugging, and analytical skills.
- Experience collaborating within cross-functional Agile teams.
Experience we consider a plus:
- Experience with Docker, Kubernetes, or EKS.
- Familiarity with contract testing tools.
- Exposure to telecom or communications platforms.
- Mobile automation experience with Appium.
- Experience contributing to shared, cross-team automation frameworks.
How you’ll benefit:
- Discretionary Time Off
- Private Medical Healthcare
- Pension scheme
- Ericsson support line
- Hybrid work
- Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process
#LI-KS
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
Ready to apply?
Apply to Vonage