Contract Opportunity: Power Electronics Engineer (OUTSIDE IR35 – QDOS Assessed)
Location: Henley-on-Thames (Hybrid – Majority Onsite)
Duration: 12 Months (with likely extension)
Start Date: ASAP
IR35 Status: Outside IR35 (QDOS assessed)
Overview:
An experienced Power Electronics Engineer is required for a contract position (Outside IR35) to support the design, development, and qualification of high-reliability AC-DC and DC-DC power conversion systems. These systems are next-generation Civilian avionics systems, and the role involves working closely with multi-disciplinary teams on a hybrid basis, with a majority onsite presence in Henley-on-Thames. This is a hands-on role for a contractor with significant expertise in power conversion, EMI/EMC compliance, MIL-STD-461G, and environmental qualification of ruggedised systems.
Key Responsibilities:
* Design & Development
o Design wide-range AC-DC front-end converters (85–265 VAC to regulated DC rails).
o Develop isolated and non-isolated DC-DC converters for RF, digital, and control subsystems.
o Optimise power designs for efficiency, thermal performance, reliability, and compactness.
* EMC / EMI Compliance
o Ensure compliance with MIL-STD-461G and relevant EMI/EMC standards.
o Apply best-practice filtering, shielding, grounding, and PCB layout techniques.
* Testing & Validation
o Develop and execute test procedures for performance and EMC compliance.
o Conduct lab validation using oscilloscopes, spectrum analysers, LISNs, and other test equipment.
o Support rugged qualification testing (temp, humidity, vibration, shock).
o Work closely with RF, digital, and mechanical engineers for power system integration.
o Support design reviews, FMEA/FTA, and reliability analysis.
* Documentation & Compliance
o Produce high-quality schematics, design documentation, test reports, and certification evidence.
Candidate Requirements:
* Bachelor's or Master’s degree in Electrical/Electronic Engineering.
* 10+ years of experience in power electronics design, integration, and testing.
* Proven experience in AC-DC and DC-DC converter design (up to kW range desirable).
* In-depth knowledge of EMI/EMC principles and MIL-STD-461G.
* Hands-on expertise with PCB layout for power and EMC performance.
* Skilled in simulation tools: PSPICE, LTspice, MATLAB/Simulink.
* Proficient in lab validation and use of EMC test equipment.
* Experience with power factor correction (PFC) topologies.
* Familiarity with ruggedised systems for defence/field deployments.
* Knowledge of thermal management and environmental protection.
* Experience working with compliance/certification bodies.
* Exposure to automated power and EMC test setups.
Why Apply?
* OUTSIDE IR35 (QDOS assessed)
* Work on advanced satellite ground terminals with real-world application
* High-impact, technically challenging project
* Opportunity to contribute to a multi-disciplinary engineering environment
* Three days onsite and two from home
Application Process:
If you are a seasoned Power Electronics Engineer looking for your next OUTSIDE IR35 contract, please apply with an up-to-date CV highlighting relevant experience. Immediate availability or short notice is preferred.
Seniority level
* Mid-Senior level
Employment type
* Contract
Job function
* Industries: Computers and Electronics Manufacturing, Appliances, Electrical, and Electronics Manufacturing, and Aviation and Aerospace Component Manufacturing
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