All active NestJS roles based in Israel.
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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.
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.
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.
Required:
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
Experience we consider a plus:
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
#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
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At Honeycomb, we're not just building technology, we’re reshaping the future of insurance.
In 2025, Honeycomb was recognized by Dun & Bradstreet as “Top 10 Best Start Up Companies to Work For” in Israel and named by LinkedIn as “Top 10 Startups in Chicago”.
How did we earn these honors?
Honeycomb is a rapidly growing global startup, generously backed by top-tier investors and powered by an exceptional team of thinkers, builders, and problem-solvers. Dual-headquartered in Chicago and Tel Aviv (R&D center), and with 5 offices across the U.S., we are reinventing the commercial real estate insurance industry, an industry long overdue for disruption. Just as importantly, we ensure every employee feels deeply connected to our mission and one another.
With over $55B in insured assets, Honeycomb operates across 20+ major states, covering 60% of the U.S. population and increasing its coverage.
If you’re looking for a place where innovation is celebrated, culture actually means something, and smart people challenge you to be better every day - Honeycomb might be exactly what you’ve been looking for.
Ready to apply?
Apply to Honeycomb InsuranceShare this job
QuantHealth is an AI startup revolutionizing drug development and clinical trials. Our cutting-edge clinical trial simulator can run thousands of trials in parallel to de-risk and optimize real-world clinical trials. Powered by a unique dataset of over 350M patients and 100K drugs, our platform helps drastically reduce drug development costs and timelines. We’re venture-backed, based in Israel, and work with top-tier pharma companies across Europe and the US.
We are looking for a Senior Back End Engineer (API & Agentic AI) to play a key role in the evolution of QuantHealth’s backend architecture and emerging AI platform capabilities. This role will contribute significantly to the transition from a monolithic application to a multi-service backend platform, while also helping design and implement the backend foundations for agentic AI systems used across our product.
You will work on core backend services, API design, and distributed system concerns, and collaborate closely with full stack, product, data science, and security teams to build scalable, secure, and well-observed services that support both human-facing workflows and autonomous AI agents.
Backend & Platform Architecture
Contribute to the design and implementation of a multi-service backend architecture
Design, build, and maintain robust, well-documented APIs for internal and external consumers
Help define backend standards that support both traditional SaaS workflows and AI-driven, agent-based execution
Collaborate on architectural decisions and provide technical guidance within the engineering team
Agentic AI Enablement
Design backend primitives and services that support agentic AI systems (e.g., task execution, state management, orchestration, tool invocation)
Build APIs and infrastructure that allow AI agents to safely interact with internal services, data, and external systems
Implement guardrails for agent execution, including authorization boundaries, auditability, rate limits, and failure handling
Partner with data science and ML engineers to productionize AI workflows in a reliable, observable, and secure way
Backend Best Practices & Reliability
Implement and improve backend best practices, including:
Authentication and authorization (token-based auth, RBAC, service-to-service auth)
Idempotency and safe retry mechanisms
Consistent error modeling and API contracts
Input validation and schema enforcement
API versioning and backward compatibility
Ensure backend services follow strong networking and security principles
Help establish and maintain observability standards (logging, metrics, tracing)
Write high-quality, well-tested TypeScript code
7+ years of professional software engineering experience, primarily focused on backend systems
Strong expertise in TypeScript for server-side development
Proven experience designing and implementing APIs for complex systems
Experience with Nest.js or another major TypeScript backend framework (e.g., AdonisJS, Express, Fastify, Koa)
Solid understanding of:
HTTP and networking fundamentals
API security and authentication/authorization patterns
Reliability concerns in distributed systems
Experience with:
API documentation (OpenAPI / Swagger)
Testing strategies (unit, integration, API tests)
Validation and contract-driven development
A pragmatic, ownership-oriented mindset with strong engineering judgment
Comfort working in systems that mix deterministic software with probabilistic AI components
Experience participating in monolith-to-services or modularization efforts
Experience supporting external, customer-facing APIs
Experience designing systems that support AI agents, workflows, or automation platforms
Familiarity with LLM tooling concepts (tools/functions, agent loops, structured outputs)
Experience with Effect
Familiarity with healthcare, life sciences, or regulated environments
Experience with cloud-native deployments and production observability tooling
Work on technically deep problems at the intersection of backend systems and AI in healthcare
Help shape both a scalable backend platform and the foundations of agentic AI capabilities
Collaborate with a thoughtful, high-caliber engineering team
Competitive compensation and opportunities for growth
Ready to apply?
Apply to QuantHealth
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Perion is a global advertising technology company delivering solutions to the biggest brands and publishers around the globe across search, social media and display, video, CTV, and programmatic DOOH.
Home to an award-winning technology solution –– with our unique data-driven AI/ML based technologies, we deliver and optimize hundreds of terabytes of data and billions of events per day. We’re working with dozens of sources to provide a superior experience across screens and platforms, including mobile, video, social and native.
Ready to apply?
Apply to Perion Network Ltd
Cymulate’s Continuous Security Validation enables companies to challenge, assess and optimize their cyber-security posture against the evolving cyberthreat landscape, simply and continuously.
With world-class clients we strive to bring the highest level of service to everything we do. Our team is made up of the very best people for the job and as we grow, we’re always on the lookout for people with the skills, experience, and personality that will let us both shine. With high scores on Gartner, G2 and Glassdoor, our clients and employees have let us know what they love about us.
What Will You Have?
Ready to apply?
Apply to CymulateCookies & analytics
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