Senior Back-end Engineer (NodeJS)

What will you do?

• You'll architect and implement backends and their interactions with various data stores and other APIs (including 3rd party APIs).
• You'll work in an agile environment focusing on projects that are impactful on our business.
• You'll support reliable databases and APIs for real-time automated decision-making. 
• You'll deploy your software using industry-standard tooling like Kubernetes clusters, and Lambda functions. 
• You'll investigate and resolve production issues by analyzing code, data, and system behavior and then propose and implement timely fixes to minimize user impact. 
• You'll care deeply about security in everything you do and constantly raise the baseline of how we defend our user's data against external threats and themselves.  
• You'll implement robust automated test suites to ensure high quality and low failure rate of delivered code. 
• You'll work in a DevOps style to make sure Defense in Depth principles are followed and containers are as secure as humanly possible. 
• You'll work closely with Product Managers, Senior Engineers and Architects to understand business processes, rules, and requirements, and turn them into high-quality code with automated tests, and deploy them to production. 
• You'll have huge creative freedom and ability to put your mark on the project, and you will take ownership and responsibility for what you do. 
• You’ll have a lot of chances to develop your programming skills as well as learn a lot about how tech business is done in the US.

We might be a match if you…

• Have at least 5 years of hands-on experience with Node.js, JavaScript, and TypeScript.
• Possess a good, practical knowledge of at least one relational database system, e.g. PostgreSQL/MySQL/SQL Server.
• Are adept with microservices and system design patterns.
• Can engage in discussions and decisions regarding software design and architecture.
• Are independent problem-solver.
• Have the ability to convey ideas clearly across technical and non-technical teams. 
• Can demonstrate responsibility, accountability, and a strong sense of ownership in delivering high-quality work. 
• Have experience implementing the test pyramid (unit, integration, e2e tests).
• Utilize good security practices effectively.
• Show readiness to learn and expand your skill set as required by ongoing projects.
• Treat AI-assisted development as a core part of how you work – Cursor, Claude Code, Codex or similar are in your daily setup. You have strong instincts for where AI accelerates both speed and quality vs where critical judgment has to lead.
• Have a good command of English (written & spoken).
• Are available in the afternoons – we prioritize everyone’s personal time and work-life fit, but since we work in multinational teams, occasional evening meetings may be necessary to ensure smooth communication across time zones.
 What you'll be using after joining us:
• Node.js, TypeScript, Nest.js,
• Docker and container-based deployment technologies (e.g. Kubernetes/Fargate), 
• Automated software testing on unit/integration/end-to-end levels.
• Devin, an autonomous AI engineer we work with daily to parallelize and accelerate delivery across the team.
 You will get extra points for:
• Familiarity with Docker/Kubernetes/AWS deployment processes.
• Experience with profiling and performance optimization. 
• Experience in giving high quality feedback during code review.

Recruitment process:

• Send us your CV – it's the best way for us to get to know you.
• Meet one of our Recruiters.
• Complete a 30-minute one-way interview.
• Join a Live Coding session with our Senior Engineers.
• Have a chat with your potential Engineering Manager.
• Meet on the final stage with Marcin and Alicja.
• and... welcome aboard! 👋