April 9, 2026

Fullstack Engineer

Senior • Hybrid

130 - 140 PLN/hr

Warsaw, Poland

Software Engineer (Kotlin / Python / JavaScript)

Location: Kraków or Warsaw (hybrid — 5 days per month in the office)

Contract type: B2B — 130–140 PLN/h

Project: Long-term international project

About the Role

We are looking for a Software Engineer to join a collaborative product team working in an iterative delivery model. The team is responsible for the full lifecycle of the product — from design and development to production support — following the principle: “you build it, you support it.”

This role offers an opportunity to work with modern technologies across backend and frontend, while continuously learning new programming languages and tools.

Key Responsibilities

  • Work in a cross-functional team of 4–6 engineers

  • Break down requirements into user stories and deliver iteratively to production

  • Design technical solutions aligned with architectural guidelines

  • Provide production support, including troubleshooting bugs, performance, and security issues

  • Identify and manage technical debt alongside new feature development

  • Collaborate closely with team members, including pair programming

  • Ensure high quality and maintainability of delivered solutions

Requirements

  • Minimum 5 years of relevant commercial experience

  • Experience with at least one programming language (Kotlin, Python, or JavaScript preferred)

  • Willingness to learn multiple technologies across backend and frontend

  • Working knowledge of Unix/Linux environments

  • Understanding of databases from a usage perspective (MongoDB, Redis, PostgreSQL)

  • Experience with HTTP APIs (RESTful services)

  • Good English communication skills (team communication in English)

Nice to Have

  • Knowledge of .NET / C#

What We Offer

  • Hybrid work model — only 5 days per month from the office (Kraków or Warsaw)

  • Private medical care (Medicover)

  • Sports card (Multisport or equivalent)

  • Life insurance

  • Long-term, stable cooperation

  • Opportunity to work with modern technologies in an international environment

  • Support for professional development and learning