Senior Back-end Engineer (Node.js)

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 impactful projects. You'll support reliable databases and APIs for real-time automated decision-making and deploy 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, then implement timely fixes to minimize user impact. You'll care deeply about security and continuously strengthen protection of user data. You'll implement robust automated test suites and work in a DevOps style to ensure Defense in Depth principles are followed and containers remain secure.

You'll collaborate closely with Product Managers, Senior Engineers, and Architects to translate business requirements into high-quality, tested code deployed to production, taking ownership and responsibility for your work.

Requirements

• 5+ years of hands-on experience with Node.js, JavaScript, and TypeScript
• Practical knowledge of relational databases (PostgreSQL/MySQL/SQL Server)
• Experience with microservices and system design patterns
• Ability to participate in software design and architecture decisions
• Experience implementing unit, integration, and end-to-end tests
• Strong security best practices
• Good command of English (written and spoken)
• Availability in the afternoons for multinational collaboration

Nice to have

• Familiarity with Docker/Kubernetes/AWS deployment processes
• Experience with profiling and performance optimization
• Experience providing high-quality code review feedback

What you'll be using

• Node.js
• TypeScript
• Nest.js
• Docker
• Kubernetes/Fargate
• Automated testing (unit/integration/end-to-end)

Benefits

Salary: 26 000 – 32 000 PLN + VAT on B2B

Basics

• Form of employment of your choosing
• Remote work & flexible working hours
• Non-service days

Health & Safety

• Private medical care with dentists & orthodontists package
• Group life insurance
• Free online sessions with psychologists and psychotherapists
• Home physiotherapy
• Multisport card & meditation apps reimbursed 50%

Working conditions & Development

• Apple equipment and monitor
• 50% reimbursement for courses, conferences, books & certificates
• Free access to private language lessons
• 6 Personal Development & 4 Voluntary Non-service days

Extras

• Cafeteria platform monthly budget
• Nanny services for parents
• Concierge services
• Chill room with table football & PlayStation 5
• Free snacks and ice cream in the office
• Free Friday lunch in the office
• Team building events and annual offsite