This is genuinely one of those "one in a million" job opportunities for a Power Systems Engineer to be based an incredibly exciting Tech company in the Cotswold. The Role You will take ownership of the design, integration, and validation of a core energy system used across a range of extremely high-performance equipment. This is a practical, engineering-led role involving both lab-based development and field testing in demanding conditions. Key Responsibilities * Design and develop integrated energy systems for deployment in harsh environments * Act as a technical lead for power-related requirements across electrical, mechanical, and system interfaces * Ensure stable power delivery across embedded systems, sensors, and control units * Develop and implement thermal management strategies for battery performance in low temperatures * Conduct testing and validation in both controlled and real-world settings * Support safety, compliance, and certification processes in line with relevant industry standards * Participate in field trials, including travel to remote or cold-weather locations About You * Background in Electrical Engineering or a related discipline * Experience working within Aerospace, Military or Defence products. * Strong exposure to battery systems, thermal control, and system integration * Practical skills in prototyping, testing, and hardware development