Regular Python Developer (f/m/x)

Sii Poland; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Centre of internal trainings

Profit sharing

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care

Job summary

Sii Poland is seeking a skilled Python Developer to join a team delivering cloud-native software for complex telecommunications networks, including 5G. You will participate in the full lifecycle, collaborating with engineers, data scientists and telecom experts in a hybrid work setting.

The role emphasizes production-quality Python, Linux, Docker/Kubernetes, and API/microservice development, with Polish and English language proficiency and residency in Poland required.

Qualifications

• Minimum 3 years of experience in software development with Python 3.
• Production-quality software design, implementation and maintenance.
• Experience with automated testing using pytest or unittest.
• Linux-based development and familiarity with containers.
• Understanding of containers, Docker and Kubernetes fundamentals.
• Experience developing microservices or web APIs and working with relational databases.
• Strong problem-solving and debugging skills.
• Advanced level of Polish and English; residency in Poland.

Responsibilities

• Participate in the complete software development lifecycle from analysis to deployment.
• Develop cloud-native microservices and REST APIs.
• Process and analyze network configuration, performance and telemetry data.
• Write unit, integration and system tests.
• Troubleshoot application behavior in Linux and Kubernetes environments.
• Evaluate new technologies and contribute to PoCs.
• Collaborate with software developers, system engineers, data scientists and telecommunications experts.

Skills

Python

pytest

Linux

Docker

Kubernetes

REST APIs

Microservices

Relational databases

English

Polish

Tools

OpenTelemetry

Helm

Prometheus

Grafana

Job description

We are looking for a skilled 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 complete software development lifecycle, collaborating with a diverse team of software developers, system engineers, data scientists, and telecommunications experts. This role offers a hybrid work mode, allowing you to work from both the office and home. If you are passionate about building production-quality software and eager to tackle challenges in the telecommunications domain, this opportunity may be the right fit for you.

Your tasks

• 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
  
  

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

Nice to have

• 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
  
  

Job no. JOB-GNGPU

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care