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Software Test Engineer, Ground Systems (m/f/d)

Isar Aerospace - Parsdorf, Bavaria, Germany - In-office - posted 2026-09-15

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Isar Aerospace, a fast-growing space technology company, is seeking a Software Test Engineer to join the Ground Control Systems team. You will contribute directly to the development and maintenance of testing systems that support the development of new aerospace technologies and platforms. In this role, you will: - Contribute to CI/CD pipelines and DevOps workflows related to testing, automation, and software delivery - Develop and maintain test plans, test cases, and automate tests where feasible - Work with existing SIL/HIL (Software-in-the-Loop/Hardware-in-the-Loop) setups, helping to extend, debug, and improve them over time - Support IVVQ activities, including integration testing, verification, validation, and qualification of new firmware and software components - Perform regression testing and help refine the testing process for faster iteration - Document test results, identify failure patterns, and share insights with engineering teams - Collaborate closely with PLC and software engineers to investigate issues discovered in the field and incorporate learnings into the testing pipeline Isar Aerospace is at the forefront of New Space, building a modern space business to enable faster, better, and cheaper access to space. The company is privately funded by world-leading technology investors and is making rockets in a way that disrupts the traditional industry. The team is composed of driven and talented people with a passion for space innovation. REQUIREMENTS: - 4 years of experience in Software Testing in RTOS (Real-Time Operating Systems) environments - Fluent in English - Experience with TwinCAT and Python for test automation - Understanding of testing methodologies for real-time/automation systems - Knowledge of Git version control - Familiarity with Linux environments - Experience with test automation frameworks and continuous integration tools - Strong problem-solving skills and attention to detail

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