Ensure reliable operation of the Multilogger and Edge Device services through proactive maintenance and systematic resolution of critical production issues.
Design, implement, and continuously improve Python-based services for operations, infrastructure, and API integrations.
Actively drive improved automated test coverage and establish sustainable testing best practices.
Work with containerized systems and Kubernetes to deploy, monitor, and optimize backend services.
Reduce manual effort in project onboarding through systematic infrastructure development and automation.
Develop and maintain clean, robust integrations with external systems and services.
Contribute to team growth through hands-on mentoring, comprehensive documentation, and active participation in code reviews.

Extensive experience in backend development with Python in production environments.
Strong, senior-level proficiency with containerized systems and Kubernetes.
Proven track record of building and improving automated test coverage using modern testing frameworks and strategies.
Strong ability to prioritize effectively in day-to-day operations.
Deep commitment to code quality following clean code principles and established design patterns.
Clear, proactive communication style with the ability to explain technical decisions, conduct constructive code reviews, and collaborate effectively in cross-functional teams.
Fluent English skills, written and spoken, for international team collaboration and technical documentation.
Nice-to-have: Experience with Go/Golang, familiarity with agile methodologies (Scrum), and exposure to IoT, edge computing, or time-series databases (e.g., InfluxDB).

Make an impact: Your work helps reduce CO₂ emissions and make buildings more sustainable and energy-efficient.
Flexible work: Organize your working day to suit your needs – flexible hours, limited core hours, and the option to work from our modern office in Cologne, remotely anywhere in Germany, or up to 10 days per year from other European countries.
Long-term prospects: Permanent contract offered after the probationary period.
Wellbeing: 30 days of annual leave, fresh organic fruit, regional coffee, free drinks, and a monthly team breakfast to keep you energized.
Professional development: Tailored training opportunities to support your career growth.
Tech setup: Modern work equipment of your choice (Microsoft or Apple) and high-quality noise-cancelling headphones.
Mobility package: Choose between the Deutschlandticket (Germany public transport pass) or a JobRad bike for commuting or private use.
Pension benefits: Subsidies for capital-forming benefits (VWL) or company pension schemes (bAV).
Team culture: Regular team events, flat hierarchies, equal-footed collaboration, and active knowledge sharing to foster strong teamwork and open communication.
Dog-friendly office: Bring your dog to the office – we welcome canine companions.

Senior Backend Developer

Key skills