At Expleo, we are a global engineering, technology, and consulting service provider delivering cutting-edge solutions to some of the world''s most innovative companies. We help clients accelerate innovation, ensure quality, and improve performance across the entire product lifecycle. We are currently supporting a specialist client focused on electric vehicle powertrain and ancillary technology development and are looking for a Junior Systems Engineer to join the team and play a key role in electric vehicle electronic system design and integration from initial requirements identification through to final calibration and validation. This is a permanent role based in Oxfordshire. Key Responsibilities:Develop and define vehicle-level system architecture.Design and implement high- and low-voltage electrical systems and communication networks.Engineer integration strategies for vehicle electrical subsystems.Conduct safety assessments and support functional safety design processes.Create and build test rigs for system verification.Perform system-level testing, calibration, and validation. Required Skills and Experience:Familiarity with modern EV powertrain systems and components.Proven ability to design vehicle systems architecture.Proficient in CAN and LIN communication protocols, including use of diagnostic tools such as PEAK, Vector CANalyzer/CANoe.Skilled in creating system diagrams using Microsoft Visio or equivalent software.Experience with wiring loom design and layout.Hands-