> Markdown version of [/jobs/ext/4000285-senior-test-development-engineer](https://www.wearedevelopers.com/jobs/ext/4000285-senior-test-development-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Test Development Engineer

- **Company:** Cambridge GaN Devices Ltd
- **Location:** Cambridge, UK
- **Experience:** Expert
- **Salary:** £48,479.0
- **Contract:** Permanent contract
- **Skills:** Computer-Aided Design, Altium Designer, Analog Electronics, Automation of Tests, Software Documentation, SolidWorks (CAD), Software Debugging, Electronic Design Automation, Python (Programming Language), LTspice, Hardware Testing, Autodesk Autocad
- **Published:** October 29, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5944670552

## About the Role

* Degree in Electrical/Electronic Engineering, with industry experience in semiconductor test or characterisation.
 * Strong communication skills, with experience working with suppliers and external partners to source, evaluate and compare test equipment and capabilities.
 * Experience leading technical workstreams and mentoring engineers.
 * Proven experience architecting test hardware and test systems for semiconductor devices, preferably power devices.
 * Broad knowledge of test equipment (SMUs, curve tracers, oscilloscopes, high-voltage and current probes, switch matrices) and how to select it.
 * Mixed-signal circuit knowledge, enough to design test hardware or specify it clearly for hardware engineers.
 * Understanding of power conversion circuits and switching measurements.
 * Experience using analog circuit simulation tools (e.g. LTSpice)
 * Experience with test automation and instrument control (e.g. Python).

Desirable

 * Wide bandgap (GaN or SiC) experience, including double-pulse testing.
 * Production test, ATE or wafer probing experience.
 * PCB design tool experience (e.g. Altium).
 * Mechanical CAD tool experience (e.g. Autodesk Fusion360)

Personal attributes

 * Clear communicator who inspires confidence in colleagues, partners and customers.
 * Strategic thinker with strong practical skills and an eye for detail.
 * Pro-active and comfortable in a fast-paced, scale-up environment.
 * Willing to travel to partners in Europe, the Americas and Asia.

## Description

Test hardware architecture

 * Define how the device under test connects to test equipment: fixtures, sockets, probing, interconnect and switching, for static, dynamic and mixed-signal measurements.
 * Specify the test system: select commercial instruments and equipment, or design custom hardware where nothing suitable exists.
 * Architect multi-site hardware that tests several devices in parallel.
 * Implement reliability and stress tests in hardware (e.g. HTRB, HTOL, burn-in boards), to requirements set by the Principal Reliability Engineer.
 * Write test hardware specifications for hardware engineers to implement, then review designs and lead bring-up and debug.
 * Ensure measurement integrity of characterisation test setups. Implement in-house test system calibration, verification/maintenance and self-test procedures if not covered by standard annual calibration.
 * Write and maintain test system documentation including standard operating procedures with inputs from hardware engineers.

Test methodology and automation

 * Develop characterisation and verification test methods for new devices with the design and characterisation teams.
 * Design automation for repetitive and long-duration tests so they run safely unattended.
 * Support Operations and external partners with hardware for external and production test.
 * Work together with test lead and tech lead defining test campaigns.

Leadership and external collaboration

 * Lead test hardware workstreams from concept to release, planning scope, schedule and budget, and managing technical risk.
 * Act as the technical authority for test hardware: set design practices, review other engineers' work and sign off test setups.
 * Mentor and develop engineers, sharing test hardware know-how across the team.
 * Build relationships with equipment suppliers, test houses and external partners to find, evaluate and benchmark test equipment and capabilities, and make buy-or-build recommendations.
 * Shape the test hardware and equipment roadmap, anticipating the needs of upcoming products.