Harmattan AI is scaling multiple hardware programmes and needs internal tooling to help the engineering teams develop and validate products faster. The new R&D Hardware Tooling team builds the rigs, fixtures, and instrumentation that accelerate design, bring-up, characterisation, and validation across every hardware product. These are development and validation tools used in the lab and in R&D workflows — not production test equipment for a manufacturing line. This role owns the electronics of those tools end-to-end: breakout and interface boards, instrumentation and DAQ hardware, signal-conditioning and debug-access boards, and RF characterisation fixtures. Unlike product electronics optimised for cost at volume, tooling electronics prioritise measurement accuracy, flexibility, robustness, and fast turnaround.