Senior Backend Engineer (Node.js)

You’ll be solving complex challenges and maintaining our own infrastructure with 60PB+ monthly data traffic. Here are its scale and maturity in numbers:

• 6PB+ Ceph storage
• 60PB+ monthly data traffic through our systems
• 300k+ service requests/sec processed
• 500k+ Kafka messages/sec streamed

In this role, you’ll:

• Lead the design and delivery of scalable, high-performance systems and web scraping solutions.
• Elevate coding standards and team expertise through mentorship and thorough code reviews.
• Take full responsibility for tasks from discovery to delivery within Agile workflows.
• Troubleshoot complex issues while contributing to product research and new idea development.

• Deep expertise in Node.js with a proven track record of designing high-traffic, scalable solutions.
• Experience leading technical discussions, guiding team members, and driving best practices.
• Strong understanding of distributed systems, microservices, and performance optimization.
• Proficient in automated testing frameworks (Unit and E2E) and writing testable code.
• Proactive, solution-oriented mindset with excellent written and spoken English and Lithuanian.

Nice to have

• Familiarity with React/JS to understand how backend logic is visualized.
• Skilled in using Docker and Kubernetes for deployment and orchestration.
• Experience leading R&D initiatives and/or introducing new technologies/AI tools.

• Growth & Learning: 40+ internal learning options, external conferences, mentorship, and year-round knowledge-sharing.
• Health & Well-being: Private health insurance, psychotherapy, on-site well-being consultants, 24/7 gym access, and a wellness app.
• Celebration & Community: Team events, an overseas workation, quarterly team-building budgets, and plenty of ways to mark milestones together.
• Plus bonus vacation days, paid life-moment days off, barista coffee, and all the tools you need.
• Vast internal & external learning resources
• Guilds, communities & 500+ professionals by your side
• Tesonet network & knowledge sharing
• Yearly workation
• Year-round internal & Tesonet community events
• Team building budget
• Cyber City office perks
• Hybrid work (3 office days/ 2 WFH) & WFA options
• Latest tools, gadgets & tech stack
• Extra days off
• Special Tesonet product deals
• Private health insurance
• 24/7 gym
• Physical well-being specialists
• Psychologist/psychotherapist sessions
• Inclusive family-related time-off policy