Fullstack Engineer

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