Job Description
Hyperscale Power is building the power backbone for the AI data center era: a complete power conversion chain from 13.8kV–35kV medium-voltage AC down to 800V DC, combining ultra-compact SiC-based AC/DC and DC/DC power blocks. Rigorous testing is what turns a promising prototype into a product our customers can trust – and what gets us from validated prototype to Alpha customer readiness to volume shipments.
As Test Engineer, you will design and execute test plans for our power conversion systems – from functional and target-parameter verification through stability, endurance and load testing. You will build and maintain the test setups that validate our hardware and firmware, and work closely with Power Electronics, Firmware, EMC/Compliance and Mechanical engineers to track down and resolve issues.
It is a unique opportunity to shape the test strategy of a breakthrough power electronics platform from an early stage – with direct visibility to the CTO and engineering leadership.
Key Responsibilities
- Design and execute test plans for our AC/DC and DC/DC power conversion systems – functional tests, stability tests, endurance (soak) tests, and load tests.
- Build and maintain test setups for prototype, pilot and production units, including medium-voltage test benches.
- Support prototype validation and target-parameter verification (form factor, efficiency, stability) for our Prototype milestone.
- Support qualification testing for Alpha customer deployments – full target-parameter verification, certification test support, and release tests for volume delivery.
- Develop test automation scripts and tools to increase test coverage and reduce manual test effort.
- Collaborate with the Power Electronics, Firmware, EMC/Compliance and Mechanical teams to diagnose and root-cause test failures.
- Document test procedures, results and reports; maintain traceability for certification and quality purposes.
- Support the definition and specification of end-of-line (EOL) test equipment for volume production, working with our EOL test equipment vendor.
- Support field testing and diagnostics for units deployed at customer sites as needed.
Qualifications
- BSc / MSc in electrical engineering or comparable education.
- 3+ years of experience in test engineering, ideally for power electronics or medium-voltage systems.
- Experience with medium-voltage high-power test setups and lab safety protocols and practices.
- Familiarity with test automation and scripting (e.g. Python or similar).
- Understanding of power electronics test methods (efficiency, thermal, load and stability testing).
- Strong documentation and analytical skills.
- Team player, comfortable working hands-on in the lab with cross-functional teams.
- Language skills: fluent in English, spoken and written; German language skills helpful, but not mandatory.
- The job will be located at our HQ in Egg b. Zürich, Switzerland.
Benefits
- Equity + competitive salary.
- Unique technology and market opportunity – validated prototype and first paying customers on the path to volume shipments.
- Hybrid work with flexible working times.