Electronics Engineer (Senior)

ABOUT US Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces. Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected. About the Role Power electronics are the bottleneck on every next-generation UAS airframe we build: motor controllers, gate drivers, and DC-DC stages are what define flight time, payload, thermal envelope, and field reliability. We're looking for a senior IC to own the analog power chain end-to-end across our UXV platforms: from MOSFET commutation simulation through PCB layout to lab validation. You will be the technical reference on power electronics inside our Lausanne engineering hub, unblocking propulsion, airframe, and embedded teams in parallel as we scale from prototype cadence to multi-platform deployment. This is a builder role, not a research seat. You ship hardware. Responsibilities * Power Stage Architecture: Lead motor-controller and DC-DC topology across fixed-wing, multicopter, and hybrid UXV platforms. Translate mission constraints into power-chain specification. * MOSFET Commutation & Gate-Drive Design: Own the analog switching design: dead-time tuning, gate shaping, switching-loss vs EMI vs thermal trade-offs. * Multi-fidelity Simulation: Deploy the full stack: analytical loss budgeting, transient SPICE (LTspice), system-level modelling in PLECS or Simulink. * BLDC Drive Stages: Design three-phase inverters with integrated current sensing, protection, Trapezoidal and FOC-aware hardware interfaces. * High-Power-Density PCBA: Lead schematic and layout in Altium or KiCad with thermal, parasitics, and EMC engineered in from the first revision. * EMI / EMC Engineering: Drive pre-compliance, filter design, and root-cause debug under flight-representative loads. * Prototype-to-Production: Take motor-controller PCBAs through revision discipline, DFM, and qualification - closing the loop on field returns. * Lab Validation: Execute bench characterization (power analysers, oscilloscopes, thermal imaging, double-pulse testing) and reconcile against simulation. * Firmware & Controls Interface: Partner with embedded and propulsion on FOC tuning, current-sense calibration, and the hardware/firmware compensation boundary. * Design Authority & Mentorship: Set the bar via design-decision records and reference designs. Mentor 1–2 junior engineers. Candidate Requirements * MSc or PhD in Electrical Engineering, Power Electronics, or equivalent. * 5+ years of hands-on R&D experience on motor drives, BLDC/PMSM controllers, or high-power-density power electronics. * Deep working mastery of MOSFET commutation design: gate-driver selection, dead-time tuning, switching transitions, loss budgets. * Proven ownership of at least one motor-controller PCBA shipped from prototype through production (or pre-production qualification): ideally on drone, robotics, eVTOL, or automotive platforms. * Fluency in simulation (LTspice, PLECS, or Simulink) and PCB design (Altium). * Strong, hard-earned intuition for EMI / EMC design and debug. * Lab-bench discipline: you've personally debugged what simulation missed. * Comfort with scale-up iteration speed and end-to-end ownership. * English fluent (working language); French is a nice-to-have, not a requirement. Bonus points for: GaN / SiC experience, safety-critical design exposure , applied control theory implemented in hardware, exposure to defense, aerospace, or UAS programmes. We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.

INTRODUCTION We are looking for a Senior Electronics Engineer with a digital focus to join our world class multidisciplinary team to help solve complex technical challenges across a broad range of industries. THE ROLE At Cambridge Consultants we help our clients develop breakthrough technology across a broad range of industries including Energy and Industrial, Defence and Security, Consumer, Telecoms, Healthcare and Biotechnology, among various others.  As a Senior Electronics Engineer with a digital focus, you will collaborate with multi-disciplinary project teams to own and solve the electronics aspects of complex technical challenges for a variety of clients within these industries, from start-ups to established multinational organizations and government entities. You will initially establish yourself as a safe pair of hands delivering electronics designs. While some of your work will involve general-purpose electronics design, you will also be a key specialist for digital design projects. We will provide the time and support needed to acquire additional specialist skills, such as using Signal Integrity tools like HyperLynx, and mastering hardware design for AMD and/or Xilinx FPGAs. If you lack client-facing experience, we will also help you develop these skills. We are keen to support the development of our employees, and as such offer an extensive inhouse training program. As you advance within the organisation there will be plenty of opportunities for you to develop your technical skills and specialism, take on more leadership responsibilities and/or focus more on supporting the development of sales opportunities. WHAT WILL YOU BE DOING? Some interesting high-speed electronics challenges that we’ve previously solved include: * High altitude 5G phased array for targeted cellular coverage, with internal data-rates of over 10 Tbps * Multiple high-performance custom electronics developments for Defence and Security applications * Next-generation Explosive Ordnance Disposal for the British Army Every project we do is different – we are always innovating rather than iterating, so each new project will be a brand-new challenge. You will also have access to our extensive in-house facilities. Should you attend a face-to-face interview, we’ll provide a tour of our labs which support hardware development engineering during your visit.  These include:  * Prototype PCB manufacturing facilities, including SMT pick-and-place, vapour-phase reflow and x-ray inspection * EMC emissions test facility WHAT CAN YOU BRING? We are looking for someone with prior commercial work experience, but beyond that we can tailor the exact offer based on the amount of experience and capability demonstrated through our interview process. This is a client-facing role, so you will need to demonstrate great communications skills and a genuine passion for engineering! The essential technical requirements are: * Strong academic background with an electronics-related undergraduate degree * Solid understanding of the fundamentals of electronic circuit design * Ability to find and down-select high-performance devices, such as application processors, FPGAs and SoCs to fulfil system requirements such as data throughput and power consumption * Familiarity with embedded interconnects such as DDR4, QSPI, PCIe, JESD204 * Experience of low-noise DC switched-mode power-supply (SMPS) design * Design-for, test and debugging of EMC * Experience of schematic entry and layout using electronic computer-aided design (ECAD) tools such as Altium Designer * Basic understanding of Linux, Python and HDL for the purposes of board bring-up and debug Due to the nature of some of our key projects, you must be eligible for UK security clearance to be considered for this role. ---------------------------------------------------------------------------------------------------------------------------------- By submitting an application to Cambridge Consultants, you confirm that the information provided in this application, together with any supporting documentation, is true, complete, and accurate to the best of your knowledge and belief. You understand that any false statement, misleading information, or material omission may render you liable to disqualification from the recruitment process, withdrawal of any offer of employment, or dismissal without notice if discovered following appointment. You acknowledge that the organisation reserves the right to verify the information supplied. ----------------------------------------------------------------------------------------------------------------------------------