We are looking for an experienced Backend Engineer with strong experience in Linux networking and backend development (Go as primary, PHP for API layer) to help shape the next iteration of our SASE platform.

You will work on core gateway components, networking features, and backend services, improving performance and reliability of systems operating at scale.

This role is ideal for engineers who enjoy working close to the Linux networking stack, understand advanced networking concepts, and are comfortable solving complex, high-impact production problems.

What You Will Do:

• Design and develop backend services and APIs for SASE control plane and gateway orchestration
• Build and maintain services using Go (primary) and PHP (API layer)
• Implement and enhance Linux networking features, including:
• Namespaces, veth, routing
• netfilter / iptables / nftables
• DNS, IPsec, WireGuard, VPN and tunneling orchestration
• Firewalling and high-throughput data paths
• Contribute to platform modernization:
• Migration to lightweight Linux OS images
• Containerization and workload optimization (EKS/ECS)
• Progress toward multi-cloud and vendor-agnostic architecture
• Improve performance, scalability, observability, and reliability
• Troubleshoot complex production issues (networking, VPN, distributed systems, performance)
• Collaborate with DevOps, Security, QA, and Product teams
• Participate in architecture and design discussions
• Maintain high engineering standards (code quality, testing, documentation)
• Mentor junior engineers 

Required Skills & Experience:

• Strong professional experience with Go (Golang)
• Working knowledge of PHP (or willingness to learn quickly)
• Experience building APIs, microservices, and platform services
• Solid understanding of distributed systems and backend architecture
• Experience with PostgreSQL or MySQL

Linux & Networking:

• Strong hands-on experience with Linux systems and internals
• Advanced Linux networking expertise, including:
• Namespaces, veth, routing
• netfilter / iptables / nftables
• TCP/IP, DNS, IPsec, WireGuard
• Ability to debug packet flow and system-level networking issues
• Experience working with networking systems (gateways, firewalls, VPN endpoints)

Cloud & Tooling:

• Experience with Docker and Kubernetes (EKS or similar)
• Familiarity with CI/CD pipelines and automation tools 

Nice to Have:

• Experience in SASE, networking, or security domains
• Background as a Linux system administrator
• Knowledge of SDN, NFV, or virtual networking functions
• Exposure to security technologies (NGFW, IDS/IPS, DNS filtering) 

We are seeking a highly motivated AI Engineer to join our team and help us accelerate software innovations for next-generation software-defined vehicles. In this role, you will be responsible for the high-quality implementation of an Agentic Framework to support our AI applications. You will be responsible for writing the production-grade code that allows our AI applications to interact with millions of vehicles in real-time. We need a "builder" who thrives on the technical details of multi-agent orchestration, tool-calling optimisation, and LLM security. You will translate architectural designs into executable, high-performance systems, taking full ownership of the development lifecycle from local prototyping to global cloud deployment. This is a hands-on role for an engineer who prioritises execution, code quality, and system reliability for multi-agent systems, AI technologies and platforms.

This opportunity is for candidates who are already living in Poland. We do accommodate remote work within Poland.

Duties and Responsibilities

• Lead efforts to leverage existing AI models and frameworks to solve complex business challenges.
• Develop agentic orchestration by designing and implementing reason and act loops that allow AI agents to decompose complex goals into actionable sub-tasks.
• Design and implement a versioned prompt registry allowing for model-agnostic routing and A/B testing of system prompts
• Engineer the privacy shield for PII redaction and the hallucination verifier to audit AI-generated actions before execution
• Conduct the full cycle of data modeling and algorithm development, including modeling, training, tuning, validating, deploying, and maintaining services, (AI breadth).
• Strong domain expertise in the AI area including LLM, Time Series, RAG, fine-tune large models, traditional ML models, etc. (AI depth)
• Stay current with industry trends and advancements in data science and AI technologies. (State-of-the-Art)
• Perform data analysis and offer insights to inform business decisions across multiple domains.
• Adhere to data privacy and security protocols to uphold the confidentiality of sensitive information.
• Collaborate with cross-functional teams to understand requirements and translate them into effective AI and data science solutions.
• Document and communicate technical designs, processes, and best practices to stakeholders using visualizations and presentations.
• Take charge of projects, ensuring timely completion in a dynamic work environment.

Qualifications and Experience

• Master’s or PhD in Computer Science, Engineering, Mathematics, Applied Sciences, or a related field preferred. Bachelor's degree required.
• Strong programming skills in languages such as Golang, Python, Java, or C++, with hands-on experience in relevant frameworks (e.g., TensorFlow, PyTorch, scikit-learn).
• Proven experience building multi-agent systems and frameworks with adaptive orchestration
• Deep understanding of Jailbreak Detection (e.g., LlamaGuard) and PII masking techniques to ensure safe LLM interactions in regulated environments
• In-depth knowledge and understanding of current machine learning algorithms, AI technologies, and platforms.
• Solid experience in data preprocessing, feature engineering, and model evaluation techniques.
• Familiarity with cloud platforms (e.g., AWS, Azure, Google Cloud) and containerization technologies (e.g., Docker, Kubernetes) is a plus.
• Strong knowledge of software development best practices, version control systems, and agile methodologies.
• Results-driven with a positive can-do attitude and excellent problem-solving skills.
• Exceptional verbal and written communication skills, with the ability to collaborate effectively with cross-functional teams.
• Experience in the automotive industry is highly desirable.

The Impact You'll Drive

As a Senior ML Engineer (Speech Synthesis), you’ll be a founding member of the team building Telnyx’s next-generation speech synthesis systems. This is a greenfield opportunity — you’ll define the stack, architecture, and best practices for training and deploying state-of-the-art multilingual text-to-speech (TTS) models that power our voice AI agents.

You’ll build everything from distributed training pipelines to inference services that generate ultra-low-latency, lifelike voices across dozens of languages. Your work will bridge research and production — shaping how millions of people experience real-time conversational AI.

What You’ll Work On

• Own the stack from day one: Design and implement the ML training and inference pipelines for multilingual speech synthesis.
• Low-latency TTS: Engineer systems optimized for real-time, streaming speech generation with sub-100ms response targets.
• Train cutting-edge models: Build and fine-tune multilingual TTS systems using modern architectures — including LLM-based, diffusion, and flow-matching approaches.
• Massive-scale data processing: Develop pipelines for ingesting, aligning, and normalizing text, audio, and phonetic data across dozens of languages.
• Experimentation at scale: Run distributed training across multi-node GPU clusters, tracking results and iterating quickly.
• Cross-functional collaboration: Work with infrastructure and voice platform teams to deploy models that scale globally.
• Research meets production: Evaluate emerging techniques (LLM-guided synthesis, zero/few-shot voice cloning, full-duplex modeling) and bring them to life in production-grade systems.

What You’ll Work With

• Infrastructure: Docker, Kubernetes, Ray, Kubeflow, MLflow, Weights & Biases
• Data Systems: Kafka, Redis, PostgreSQL, Parquet
• You’ll define it: You’ll help select and implement the stack that supports distributed training, data processing, and inference for global deployment.

What We’re Looking For

• 6+ years of experience in machine learning or speech systems engineering
• Hands-on expertise with neural TTS, speech synthesis, or adjacent areas (ASR, voice cloning, multilingual modeling)
• You’ve obsessed over one or two hard problems, whether it’s building multilingual TTS from noisy data, teaching LLMs to speak, designing self-supervised audio encoders, or making diffusion models run in real time.
• Experience with LLM-based approaches to speech synthesis or prosody control
• Strong proficiency in Python and PyTorch
• Ability to deploy models efficiently (ONNX, TensorRT)
• Experience leading small teams and defining technical direction or team executables
• Production mindset: You build systems that run fast, stay stable, and are easy to maintain

Why Telnyx

You’ll be joining a company where voice, infrastructure, and AI converge. Telnyx is building the foundation for real-time, intelligent global communications — and your work on multilingual TTS will be at the core of that vision.



#LI-KG1
#LI-REMOTE

ABOUT THE ROLE

Kaseya is looking for a Software Engineer I to join our R&D team working on our industry-leading Backup product.

This is an opportunity to build a strong foundation in backend development and cloud-based systems. You'll work alongside experienced engineers to develop, test, and maintain reliable backup services, while gaining hands-on experience with modern technologies like cloud platforms, containers, and CI/CD pipelines.

You'll be supported through mentorship and code reviews while contributing to systems where reliability, performance, and scalability matter.

Requirements:

• Bachelor's degree in Computer Science or a related technical field, or equivalent practical experience
• 1+ years of professional backend software engineering experience 
• Strong willingness to learn one
• Fundamental understanding of SQL databases (e.g. MySQL)
• Basic knowledge of RESTful APIs
• Familiarity with Git and version control workflows
• Understanding of core programming concepts: data structures, algorithms, OOP
• Basic understanding of Linux/Unix environments
• Exposure to automated testing concepts (unit or integration)
• English proficiency at B1–B2 level for communication and documentation

Nice to Have

• Nice to have experience with Golang or PHP
• Exposure to any public cloud platform (AWS, Azure, or GCP)
• Familiarity with Docker or containerisation concepts
• Basic understanding of CI/CD pipelines
• Awareness of Kubernetes, even at a conceptual level
• Introductory knowledge of networking fundamentals (TCP/IP, DNS)
• Understanding of microservices architecture concepts
• Awareness of basic security principles

WHAT YOU'LL DO

• Develop & Learn: Contribute to backend services and tools under guidance from senior engineers
• Code Quality: Write clean, maintainable code and participate in code reviews
• Testing: Help implement and maintain automated tests
• Debugging: Assist in troubleshooting issues in development and staging environments
• Collaboration: Work closely with team members to deliver features and improvements
• Documentation: Contribute to technical documentation and internal knowledge sharing
• Growth: Continuously develop your skills in backend systems, cloud, and infrastructure

What We Offer:

• Hybrid work model — 3 days/week in our Krakow office
• Collaborative and knowledge-sharing team culture
• Competitive salary & benefits

About the Role:
Kaseya is looking for an experienced Software Engineer (with Golang) to build the new Backup product.

As a Engineer, you'll take ownership of your code and collaborate with a skilled team of developers, QA engineers, and DevOps professionals. You'll be recognized not only for delivering robust, high-performance services but also for actively driving improvements in product quality and engineering processes.

This is a role for engineers who thrive in fast-moving agile environments, embrace accountability, and are eager to work on systems that require performance, reliability, and scale.

What You’ll Do:

• Take full ownership of backend feature development using Golang, from design through deployment and support
• Collaborate closely with cross-functional teams using Agile/Scrum methodology to refine requirements, estimate effort, and deliver value incrementally
• Design, build, and maintain secure, scalable, and performant microservices and APIs
• Resolve reported defects efficiently while delivering features that delight users
• Drive and uphold best practices in code quality, security, performance, and maintainability
• Contribute to code reviews, documentation, and mentoring within the engineering team

Required Skills & Experience:

• Bachelor’s degree in Computer Science or related technical field (or equivalent practical experience)
• 3+ years of experience in backend development with one or more of the following: C/C++/Java/Ruby/Python/R/Scala
• 1–3 years of professional experience with Golang
• Strong understanding of SQL databases (preferably MySQL), including query optimization and performance tuning
• Deep knowledge of design patterns, data structures, and algorithms in real-world use
• Experience with search technologies such as Elasticsearch, Solr, Lucene, or OpenSearch
• Hands-on experience with Docker, Git, Kubernetes, and virtualization technologies (e.g., OpenStack)
• Demonstrated use of professional software engineering best practices across the full SDLC: coding standards, code reviews, source control, CI/CD, testing, and operations
• Familiarity with Unix/Linux systems
• Preferred Qualifications:
  Experience building cloud-native applications on platforms like AWS
• Exposure to GraphQL, RESTful API design, and service-oriented architecture
• Knowledge of observability tools such as Prometheus, Grafana, ELK, or OpenTelemetry
• Experience with infrastructure-as-code (e.g., Terraform, Helm)
• Background in storage, backup, or disaster recovery systems is a strong plus

Why Join Kaseya:

At Kaseya, you’ll be a part of building a next-generation backup product from the ground up. You'll work alongside passionate professionals who value code quality, system reliability, and thoughtful design. This is a high-impact role where your contributions will be felt immediately—and your technical leadership will help shape the future of our global infrastructure.

What We Offer:

• Hybrid work model — 3 days/week in our Krakow office
• Collaborative and knowledge-sharing team culture
• Competitive salary & benefits

Team and Responsibilities:

We are committed to delivering cutting-edge solutions with rapid implementation and high-speed innovation. As we continue to grow, we are looking for a talented Software Engineer II to join our team and contribute to our high-growth products that leverage on the NodeJS platform.

About You:

More than someone who checks every box, we’re looking for people who are excited to work and grow at Kaseya. If that's you, we hope you apply for the role!

• You enjoy teamwork
• You come up with new ideas and a unique point of view.
• You look forward to collaborating with a diverse team. You eagerly seek and give help. Transparency tops your list of values, and you contribute to a culture of respect and inclusion.
• You are inquisitive Inquisitive and focused, you see every challenge as an opportunity. You would rather create the future than wait for it.
• You are customer focused and take pride in your work
• You pay extra attention to details with all you do. You care about the work you provide for customers and how it reflects on yourself and the company. When you find or see something wrong, you attempt to resolve it.
• You look for opportunities to not only better yourself, but others around you. You aim to be the best that you can be and always do the right thing.

Key Responsibilities:

• Collaborate with cross-functional teams to develop, test, and implement software solutions that align with our product roadmap.
• Work on high-speed product development and contribute to the rapid delivery of new features and enhancements.
• Write clean, efficient, and maintainable code in Typescript.
• Collaborate with senior engineers to troubleshoot and resolve technical issues.
• Actively participate in code reviews, providing and incorporating constructive feedback.
• Stay up-to-date with industry trends and best practices to contribute fresh ideas and improve our development processes.

Qualifications:

• 3+ years of experience in software development
• Strong knowledge of NodeJS and Javascript/Typescript.
• Experience in working with React.
• Experience in large data management
• Experience with SQL Database (preferred MySQL)
• Experience with distributed storage

Nice-to-Have:

• Docker/K8S
• Bash
• Experience with DevOps tools and practices
• Search engine experience (OpenSearch)
• Experience in working with microservices
• Experience with Redis/Valkey
• Experience in large data management and Experience with distributed storage

If you are a motivated and fast-learning individual excited about working on high-speed product development with Node.js and React, we encourage you to apply. We’re looking for someone passionate about high-growth products and rapid delivery, who can quickly learn and adapt to new technologies, is open to feedback and continuous improvement, and brings strong problem-solving skills, attention to detail, and effective communication and teamwork.

What We Offer:

• Hybrid work model — 3 days/week in our Krakow office
• Collaborative and knowledge-sharing team culture
• Competitive salary & benefits