Senior Python Developer (f/m/x)

Technologies we use

Expected

• Python
• Pytest framework
• Linux
• Pandas

Optional

• Kubernetes
• 4G/5G
• Prometheus

Operating system

• Linux

About the project

We are looking for a skilled Senior Python Developer to join our team focused on developing cloud-native software solutions for large-scale telecommunications networks, including 5G technologies. You will participate in the entire software development lifecycle, collaborating with a diverse team of software developers, system engineers, data scientists, and telecommunications experts. This remote role offers the opportunity to work on innovative applications that analyze network data and support use cases such as RAN optimization and network self-healing.

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 to ensure software quality
• Troubleshooting application behavior in Linux and Kubernetes environments
• Evaluating new technologies and contributing to research and proof-of-concept activities
• Collaborating with cross-functional teams to deliver impactful software solutions

Our requirements

• Minimum 7 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 or similar frameworks
• Experience with Linux-based software development and troubleshooting
• Understanding of containers, Docker, and Kubernetes fundamentals
• Experience in developing microservices or web APIs and familiarity with relational databases
• Good problem-solving and debugging skills, along with the ability to use AI coding tools effectively
• Advanced level of Polish and English
• Ability to work one day per week in Kraków/Warsaw office required

Optional

• Experience in developing software for telecommunications systems, particularly 4G or 5G RAN
• Knowledge of Kubernetes networking, ingress, storage, and security concepts
• Familiarity with public or private cloud platforms and experience with data analysis or machine learning
• Experience with message brokers or event-driven architecture

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

Recruitment stages

• Send your CV
• Talk to us about your expectations
• Learn more about our projects and choose the best
• Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work