Software Engineer – Python (m/f/d)

About us
Committed to building the next generation of software-based telecommunications solutions, we develop scalable, cloud-native services that power modern mobile networks. By combining strong software engineering practices with deep domain expertise in telecommunications, we enable operators and enterprises to build flexible, future-proof network solutions.
We are now looking for a Software Engineer – Python (m/f/d) to join our team and help develop high-quality backend services for our telecom platforms. This role is ideal for an experienced Python developer who is curious, eager to learn, and motivated to grow into the Telco and IMS domain.

What you’ll do

• Design, develop, and maintain backend services using Python with a strong focus on code quality and testability
• Build and extend APIs and services using Fast API and asynchronous I/O
• Collaborate closely with engineers and domain experts to develop telecom-related applications, including IMS-based solutions
• Write clean, maintainable, and well-tested code following best practices
• Implement and maintain data storage and caching solutions using SQLAlchemy and Redis
• Perform testing, validation, and debugging to ensure reliable and high-performing services
• Gradually build knowledge of the Telco domain, including IMS concepts and related protocols

Our ideal new colleague

• Experienced Python developer with solid backend engineering skills
• Strong understanding of networking fundamentals and protocols such as IP, TCP, UDP, and ideally SCTP
• High standards for code quality, including writing automated tests and using static analysis tools
• Experience with or willingness to work with:
  • FastAPI
  • Async I/O
  • SQLAlchemy
  • Redis
  • Pydantic
• Familiarity with testing and quality tools such as Pytest, unittest, Mypy, and Ruff
• Comfortable working in a Linux/Unix environment
• Curious mindset and willingness to learn new technologies and the Telco / IMS domain
• Strong problem-solving skills and ability to work both independently and in a team
• Professional working proficiency in English
• Nice to have (but not required):
  • Previous exposure to telecommunications, IMS, or signaling protocols
  • Experience building high-throughput or low-latency distributed systems

Benefits
A little more about our culture and why you should join

• Work-life balance matters to us: flexible working hours and a hybrid or remote-friendly setup
• Opportunity to grow into a specialized and in-demand domain (Telco / IMS) while working with modern Python technologies
• Collaborative, international team with flat hierarchies and an open feedback culture
• Startup mindset with stable, long-term product development
• We value practical experience and mindset over formal degrees
• A culture that encourages learning, experimentation, and ownership