We are seeking a Firmware Validation Engineer to join a long-term embedded systems programme supporting a global access control leader. The role covers BLE, Wi-Fi, and wired-protocol IoT devices across a portfolio spanning legacy hardware (10+ years of shipped devices) and current product development. Hands-on hardware lab work, security validation, and multi-platform testing — and can context-switch efficiently across chipset families including TI, Nordic, STMicro, Renesas, and Silicon Labs.