Contract Opportunity - Principal Electronics Engineer Rochdale (hybrid working) Rate negotiable (Umbrella, inside IR35) Must be eligible for SC security clearance, can start on BPSS We are supporting a leading global engineering and manufacturing organisation based in Rochdale as they seek to bring in Principal Electronics Engineer on a contract basis. The company specialises in advanced electronics and power solutions for the aerospace, defence, land and maritime sectors, delivering high-reliability systems for some of the world's most demanding environments. The Role As a Senior/Principal Electronics Engineer, you will take technical ownership of complex power conversion and power management product development. You'll lead design activities, create high-quality documentation, develop simulations, and support qualification testing - ensuring that products meet strict aerospace and defence standards. You'll also mentor junior engineers and contribute to growing new business opportunities in collaboration with engineering leadership. Key Responsibilities Lead the development of power conversion and power management technologies. Act as technical authority for allocated projects. Mentor and support junior engineering staff. Review customer specifications and develop conceptual designs. Identify and integrate new technologies to enhance product capability. Determine optimal power converter topologies and ensure compliance with electrical/EMI requirements. Produce and review electrical design proposals, schematics and PCB layouts (Altium). Develop mathematical models and simulations for power converters and generate detailed reports. Prepare and present design reviews and engineering data packs. Support component sourcing and engagement with suppliers. Create test plans and lead design assurance and qualification testing. Analyse test results and lead investigations into product failures (including FMEA/FMECA). Build strong working relationships across internal teams, suppliers and partners. Maintain adherence to safety, quality, regulatory and engineering standards. Core Experience & Skills Strong experience in power converter and/or power management design. Familiarity with multiple power topologies (100W-10kW), e.g.: DC/DC, AC/DC, AC/AC, DC/AC, 3-phase motor control inverters. Schematic capture & PCB design skills (Altium preferred). Sound understanding of EMC best practice. Experience in aerospace, defence or automotive environments. Knowledge of relevant industry standards such as: MIL-STD-704F, DO-160G, BS 3G100, MIL-STD-810G. Experience across the full engineering product lifecycle. Strong technical documentation and communication skills. Eligibility for security clearance. Desirable Skills Experience with DOORS requirements capture. VHDL (top-level) capability. Familiarity with DO-254 and other defence/military standards. Experience with safety-critical software, FPGA programming or grant-funded R&D projects. Interested? If you're a seasoned Electronics or Power Electronics Engineer seeking your next contract and want to work on advanced, high-reliability systems in a respected engineering environment, I'd love to hear from you. Apply now or get in touch for further details.