Middle Backend Developer (Node.js)

About the role

We are looking for a skillful Backend Developer to join one of our teams working with US clients - referrals from the high-end American IT market.

Our tech stack is built around React, Node.js and TypeScript. We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions.

Enjoy the flexibility of working within the Polish time zone and collaborate with clients from diverse industries such as FinTech, SportsTech, MedTech, and many others.

Contract summary: - Rate: PLN 10.000 - 18.000 + VAT (B2B)

- Contract: B2B/UZL, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, Europe-based, flexible hours, full-time position, long-term contract, Scrum Teams and more

- Perks and Benefits: 3,000 PLN annual training budget, Multisport, Luxmed, Cafeteria Platform, Tech-talks, Learning sessions, and more

- Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, FigJam, Claude Code

Your future tasks: - Writing readable, testable and easy-to-maintain JS/TS code with OOP flavor

- Taking ownership of backend features from understanding requirements through implementation, testing and deployment

- Writing documentation for delivered code and technical decisions

- Code review of other developers in the team, including constructive feedback and knowledge sharing

- Direct involvement with the design and modification of basic DB structures and API contracts

- Propose pragmatic improvements and proactive ideas/solutions to enhance the product and team’s work processes

- Share insights with the team to diagnose issues, communicate risks and focus on solutions

- Actively participate in project discussions, refinements and technical decision-making

- Listen to the client's needs and, after consulting the team, suggest practical solutions

- Support less experienced team members through code review, explanations and pair programming Use AI tools responsibly in daily work, verifying and adapting results to production standards

About you - Tech skills & Experience: - 2+ years of commercial experience in Node.js

- Good experience with at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc) - you know most of its basic APIs/features, worked on at least 1-2 projects involving such technologies

- Strong proficiency in TypeScript. You have practical experience with static typing, advanced types, and configuring TS compilers, treating it as your primary language to build robust and type-safe backend applications

- Potentially worked with NoSQL databases and/or in-memory databases and utilized them as a data store

- Worked with SQL databases (integration-wise and as a basic design skill) with ORM or query builder tool (ie. Prisma, Knex)