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Backend Developer (Java & Python, Microservices)
Job Location:
Job Location:
Braunschweig - Germany
Monthly Salary:
Not provided by the employer
Monthly Salary:
Posted:
21 August 2026 (30+ days ago)
Posted:
Application Deadline:
4 February 2027
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
Your mission
Your mission is to design and maintain a scalable asynchronous backend that powers OKAPI:Orbits end-to-end solutions across mission design Space Situational Awareness (SSA) Space Traffic Management (STM) Flight Dynamics (FD) and Space Traffic Coordination (STC) supporting satellite operators throughout their entire mission lifecycle.
Youll work primarily on external customer projects with a Python-based tech stack while also contributing in parallel to our products built on Java Spring Boot. You design and implement robust microservices that process and distribute large volumes of orbital and telemetry data to deliver reliable APIs and automation processes. You already bring solid experience and take independent ownership of parts of the backend architecture across both environments.
Youll work on the systems that enable satellite operators and space agencies to analyze coordinate and protect their missions in an increasingly crowded space environment.
Studies show that women are less likely to apply for a position if they dont meet 100% of the requirements. Please know that we explicitly encourage you to apply if this applies to you as long as you bring a passion for space technology reliable software development and sustainable use of space.
OKAPI:Orbits already brings together a highly diverse team and is actively committed to growing that diversity further since studies show that heterogeneous teams achieve better results and drive innovation.
Youll work primarily on external customer projects with a Python-based tech stack while also contributing in parallel to our products built on Java Spring Boot. You design and implement robust microservices that process and distribute large volumes of orbital and telemetry data to deliver reliable APIs and automation processes. You already bring solid experience and take independent ownership of parts of the backend architecture across both environments.
Youll work on the systems that enable satellite operators and space agencies to analyze coordinate and protect their missions in an increasingly crowded space environment.
Studies show that women are less likely to apply for a position if they dont meet 100% of the requirements. Please know that we explicitly encourage you to apply if this applies to you as long as you bring a passion for space technology reliable software development and sustainable use of space.
OKAPI:Orbits already brings together a highly diverse team and is actively committed to growing that diversity further since studies show that heterogeneous teams achieve better results and drive innovation.
Your tasks and responsibilities
- Design develop and maintain asynchronous microservice-based backend systems primarily in Python for external customer projects and in parallel in Java Spring Boot for our products
- Implement and optimize data processing and distribution pipelines that handle large volumes of orbital telemetry and mission data
- Design and maintain message-based communication structures between microservices (e.g. via RabbitMQ or comparable message brokers)
- Collaborate closely with space engineers and scientists to translate mission-related requirements into scalable robust software solutions
- Share responsibility for the backend architecture across both tech stacks with a focus on performance fault tolerance and maintainability
- Plan and document implementation steps from system architecture through deployment in a cloud-native environment
- Ensure code quality automated testing and adherence to security and development standards
- Advance CI/CD pipelines observability and automation to support stable continuous releases
- Analyze and resolve complex issues in distributed systems with a focus on efficiency and reliability
- Work within small interdisciplinary teams contributing your backend expertise to cross-functional projects
Your profile
Must-haves
- Degree in Computer Science Software Engineering or a related field or completed vocational training as a Fachinformatiker (IT specialist)
- At least 2 years of professional experience with Python for backend development scripting automation or data processing
- At least 2 years of professional experience in backend software development with Java (Spring Boot or comparable)
- Solid understanding of microservice architectures asynchronous systems and distributed communication patterns
- Practical experience with testing and code quality assurance
- Experience with or willingness to quickly get up to speed on message-based communication between services (e.g. RabbitMQ or comparable message brokers) and containerization (Docker)
- Ability to independently plan implement and review complex features in close collaboration with engineers and scientists
- Proactive communication structured way of working and good written and spoken English
- Experience with orchestration particularly Kubernetes
- Experience with code reviews and adherence to coding standards
- Solid understanding of software architecture principles including modular structure scalability and maintainability
- Experience with secure software development
- Background in or interest in the space or aerospace sector
Why us
- Flat hierarchy small teams flexible working hours
- Up to 30 days vacation& up to 30 days workation per year
- Early responsibility influence on the technical direction
- Training budget for your personal development
- Career paths to support and promote your long-term development
- Corporate benefits (brand discounts travel discounts concert tickets etc.)
- Free German language course
- Bahncard (25 within Braunschweig 50 outside)
- Bike leasing
- Company pension scheme
- Subsidy towards Hansefit / Wellpass membership
- Participation in space events and conferences to promote sustainable space travel
From Application to Offer: Our Hiring Process
- You send us your application
- We review your profile and get back to you with a short questionnaire
- A first interview with our HR team
- A short coding challenge
- A second interview with a member of the team you would join
- A final interview with the department lead
About us
OKAPI:Orbits is at the forefront of space sustainability addressing some of the most pressing challenges of the space industry: the growing problem of crowded orbital regimes and the need for more efficient satellite operations. Were providing end-to-end solutions that help various space industry players cover their Space Situation Awareness (SSA) and Space Traffic Management and Coordination (STM & STC) needs. We are committed to safeguarding space missions and access to space for all humanity. Join us on our mission.
Last but not least we would like to share with you that research shows that women areless likely to apply for a position unless they meet 100% of the listed requirements.
Please know that if its your case but you are passionate about space technology building reliable software and contributing to a more sustainable space environment we strongly encourage you to apply.
OKAPI:Orbits already brings together a highly diverse team and we actively continue to strengthen this diversity which allows us to achieve higher performance and drive innovation.
Last but not least we would like to share with you that research shows that women areless likely to apply for a position unless they meet 100% of the listed requirements.
Please know that if its your case but you are passionate about space technology building reliable software and contributing to a more sustainable space environment we strongly encourage you to apply.
OKAPI:Orbits already brings together a highly diverse team and we actively continue to strengthen this diversity which allows us to achieve higher performance and drive innovation.
Required Experience:
IC
About Company
OKAPI:Orbits is at the forefront of space sustainability, addressing some of the most pressing challenges of the space industry: the growing problem of crowded orbital regimes, and the need for more efficient satellite operations. We're providing end-to-end solutions that help various ... View more
