We are hiring a Senior Backend Engineer (Python) to strengthen our web backend. You will join a highly collaborative R&D environment and play a key role in building secure, scalable and reliable backend services that power our platform and external integrations.
Key Highlights
Technical Skills Required
Benefits & Perks
Job Description
YOUR RESPONSIBILITIES
We are hiring a Senior Backend Engineer (Python) - (F/M/D) to strengthen our web backend. You will join a highly collaborative R&D environment and play a key role in building secure, scalable and reliable backend services that power our platform and external integrations. You will work closely with engineers across teams to provide technical depth for critical backend components while contributing to architectural decisions that support long-term maintainability and growth.
In this role your responsibilities will include:
- Design, build, and maintain Python-based backend services and APIs, with a strong focus on web applications and platform scalability
- Integrate and maintain external third-party APIs and services (e.g. SaaS platforms, partner systems, internal tooling)
- Provide technical ownership for complex backend components and initiatives and actively contribute to architectural discussions, helping shape backend patterns, standards, and long-term technical decisions
- Support and mentor other engineers through code reviews, technical guidance, and knowledge sharing
- Champion clean, maintainable, and secure code through testing, documentation, and best practices
- Contribute to the evolution of security-related backend capabilities, such as authentication and authorization flows, where relevant
YOUR PROFILE
- Senior professional experience as a Backend Engineer / Software Engineer, using Python web frameworks, ideally FastAPI
- Strong experience building and operating web backends and REST APIs, ideally in a microservices architecture
- Comfortable taking ownership, working independently, and contributing to a wide range of technical topics across Backend.
- Solid understanding of scalability, performance, and reliability considerations in backend systems
- Experience with authentication and authorization concepts (e.g. OAuth 2.0, OpenID Connect) and exposure to IAM, identity federation, or SSO implementations is a strong advantage, but not required
- Fluent in written and spoken English
We aim to respond to all applications however if you do not hear from us within 30 days from the date of your application, please consider your application unsuccessful. We thank you for your understanding.
WE OFFER
Shape the future
Have a direct impact on the electronics industry with our agile and international team.
Feel welcome
Enjoy our startup atmosphere including free lunches in the office canteen and experience our unique coffee culture. Get to know the CELUS team at regular team events and our annual company offsite
Commute freely
Modern, central location, free metro tickets, free charging for your electric car and free parking.
Learn and develop
Improve your skills with our English/German language classes, trainings and conferences with a yearly budget up to 1000 EUR. Develop your stamina and endurance with an EGYM Wellpass membership.
Decide where and when you work
Enjoy hybrid office environment, flexible working schedule, workation program, additional paid Christmas week holiday.
Relocate easily
Start swiftly and smoothly with our relocation allowance and adaptation program.
ABOUT US
CELUS simplifies and accelerates the electronics design process for the global engineering community with it’s AI-powered CELUS Design Platform.
We are a Munich founded start-up on a mission to unleash scalable engineering by providing a comprehensive library of electronics components and CUBOs, automating all the manual and tedious tasks in the design process, so engineers can spend more time on innovation.
Join our community of tech enthusiasts and proactive high performers in an amazing journey through the world of electronics. We work with a clear vision, empowered by an ambitious, fast-paced environment and caring atmosphere, where your ideas and contributions are highly valued. We have offices in Munich, Germany; Porto, Portugal; and Austin, Texas, USA.
Embracing diversity is a very important value at CELUS. As an equal opportunity employer, we do not discriminate against any employee or applicant for employment because of disability, race, color, sex, age, national origin, religion, sexual orientation, gender identity and/or expression.