Senior Backend Software Engineer

ph3Job Description /h3 pAbout Solenix and our qualities /p pSolenix is a privately owned and international company providing engineering and consulting services in the space market, with branches in Germany, Switzerland, and Italy. We are known for high-quality services, user-oriented solutions, reliable partnerships and constructive collaboration. Our customers include space agencies such as ESA, EUMETSAT and DLR, as well as large private sector companies. Solenix is specialized in distributed systems and client applications and applies modern technologies with a focus on high-performing, robust and light solutions. /p h3Why should you apply? /h3 ul liSolenix is a group of motivated, dynamic and creative people who enjoy high-quality work, as well as a relaxed and flexible work atmosphere. /li liYou can expect a friendly working environment, exciting and challenging projects and varied team events. /li liSolenix focuses on solution-oriented and innovative approaches. /li /ul h3Job Description /h3 pWe are looking for a Senior Backend Software Engineer to independently own the design of backend components for a distributed ground segment software system, covering areas such as system integration across multiple connected systems, secure data exchange, end-to-end monitoring, and service APIs consumed by web front-ends and external systems. You will also provide technical guidance to less experienced engineers within the backend team. /p pYour key responsibilities include: /p ul liDesign, implement and maintain backend services in Java (Spring) and/or Python /li liDevelop and integrate REST APIs and asynchronous interfaces towards partner systems, external nodes and front-end applications /li liImplement components for secure data handling, access control and auditability /li liContribute to end-to-end monitoring and operability features of the system /li liSupport integration with existing external systems and their interface updates /li liWrite unit and integration tests and support formal verification and validation activities /li liPackage and deploy services using Docker and Kubernetes in cloud-based environments /li liParticipate in design discussions, code reviews and agile development ceremonies /li liProduce and maintain technical documentation under configuration control /li /ul h3Essential qualifications and experience /h3 ul liUniversity degree or equivalent education in Computer Science, Software Engineering or a related discipline /li liSeveral years of professional experience developing backend systems in Java (Spring) and/or Python /li liSolid experience designing and consuming REST APIs /li liExperience with relational databases and data modelling /li liHands‑on experience with Docker; familiarity with Kubernetes and cloud platforms /li liProficiency with Git and collaborative development workflows (e.g. GitLab) /li liFocus on writing modular, testable and maintainable code /li liExperience with backend testing frameworks and automated testing (e.g. JUnit, pytest) /li liAbility to work independently and as part of a team /li liStrong prioritization and time‑management skills /li liFluent in the English language /li /ul h3Other desirable qualifications and experience /h3 ul liExperience integrating heterogeneous systems and updating existing external interfaces /li liKnowledge of security mechanisms such as OAuth2/OIDC, TLS and encryption of data at rest and in transit /li liExperience with message brokers and event‑driven architectures /li liBackground in the space ground segment domain or other mission‑critical systems /li liExperience with monitoring and observability stacks (e.g. Prometheus, Grafana) /li liGerman or French language skills /li /ul h3Work Location /h3 pThis is a hybrid role based in Basel, Switzerland, combining regular on‑site collaboration with the flexibility to work remotely part of the week. /p /p #J-18808-Ljbffr