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

Fullstack Engineer

Experis Manpower Group