Electronic / Hardware Engineer Contract: 6 months, Outside IR35, 2 days a week on-site Responsibilities: Design and develop analogue and digital electronic circuits for sonar and subsea systems Develop mixed-signal hardware including sensor interfaces, signal conditioning, ADC/DAC stages Design low-noise, high-sensitivity electronics for acoustic and underwater sensing applications Work across full product lifecycle from concept, schematic design, PCB layout through to prototype, test and production Integrate hardware with embedded software and real-time processing systems Conduct lab-based debugging, validation and performance testing of electronic systems Support environmental testing for subsea deployment (pressure, temperature, vibration, corrosion) Produce technical documentation including schematics, design reports, and test proceduresEssential Skills: Experience with mixed-signal electronics and sensor interfacing PCB design experience using tools such as Altium or OrCAD Understanding of embedded systems and hardware/software integration Hands-on experience with lab test equipment (oscilloscopes, spectrum analysers, logic analysers) Strong understanding of signal integrity and low-noise design techniques