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Test Engineer – Hardware-in-the-Loop (HiL) & RF Systems (f/m/d) Berlin, Germany | AUG Contract | 18 Months (Max. 24) | 60% Home Office | Up to €90,000. Are you a hands-on engineer who's just as comfortable with an oscilloscope as you are with a compiler? We're recruiting a Test Engineer specialising in Hardware-in-the-Loop (HiL) and RF/Communications Systems for a leading German technology firm in Berlin. This is an AUG contract role embedded in a team building and validating avionics radio systems. This is not a pure software testing role — you'll be physically building HiL test environments, connecting RF measurement instruments, debugging at the hardware/software boundary, and developing CI/CD pipelines to automate it all.
Job Responsibility
Building HiL test environments from scratch for avionics radio software integration and functional testing
Developing test frameworks and CI/CD pipelines using GitLab CI/CD
Integrating hardware and software components into complete avionics radio devices
Fault analysis and root cause analysis — determining hardware vs. software failures and driving resolution
Automating RF measurement instruments including oscilloscopes, spectrum analyzers and signal generators
Defining test cases and documenting results in collaboration with HW/SW development teams
Requirements
Degree in Computer Science, Electrical Engineering, Communications Engineering or comparable
Experience in hardware-near software development — Microcontrollers, SoC, RF/radio technology, ideally in military or safety-critical environments
Solid CI/CD experience with GitLab CI/CD and container technologies (Docker, Podman)
Strong C/C with CMake — writing and reviewing test code, not just executing scripts
Confident Linux and Git user in a professional development environment
German C1 and English to a very good level — both required daily
Comfortable working hands-on with physical hardware, cables, boards and RF equipment