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Sii Sp. z o.o.

Regular Python Developer (f/m/x)

Sii Sp. z o.o. Show all offers
B2B
Hybrid
Mid
Kraków
Warszawa
Expires Nov 8, 2026
2 days ago

In short

Python Developer (f/m/x) in Kraków. Responsibilities include software development lifecycle, microservices, data processing, testing, and troubleshooting. Requires 3+ years of Python 3 experience, Linux, Docker, Kubernetes, and API development. Offers stability, profit sharing, and growth opportunities.

Keywords

python microservices rest apis linux docker kubernetes pytest unittest sql ai coding tools

AI-written summary based on the listing content.

Technologies we use

About the project

Your responsibilities

  • Participating in the complete software development lifecycle, including requirements analysis, solution design, implementation, testing, and deployment
  • Developing cloud-native microservices and REST APIs
  • Processing and analyzing network configuration, performance, and telemetry data
  • Writing unit, integration, and system tests
  • Troubleshooting application behavior in Linux and Kubernetes environments
  • Evaluating new technologies and contributing to research and proof-of-concept activities
  • Collaborating with software developers, system engineers, data scientists, and telecommunications experts

Our requirements

  • Minimum 3 years of experience in software development with strong programming skills in modern Python 3
  • Experience in designing, implementing, and maintaining production-quality software
  • Practical knowledge of automated testing using pytest, unittest, or similar frameworks
  • Previous work with Linux-based software development
  • Understanding of containers, Docker, and Kubernetes fundamentals
  • Experience in developing microservices or web APIs
  • Familiarity with relational databases
  • Good problem-solving and debugging skills
  • Ability to use AI coding tools effectively and critically evaluate their output
  • Advanced level of Polish and English
  • Residency in Poland

Optional

  • Expertise in developing software for telecommunications systems, particularly 4G or 5G RAN
  • Experience operating or troubleshooting applications in Kubernetes
  • Knowledge of Kubernetes networking, ingress, storage, and security concepts
  • Previous work with message brokers or event-driven architecture
  • Familiarity with public or private cloud platforms
  • Experience with data analysis, machine learning, or AI-assisted network optimization
  • Familiarity with Helm, Prometheus, Grafana, or OpenTelemetry

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People
Published 2026-10-09
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