Electronics Hardware Engineer

Cowboy is looking for a Senior Electronics Hardware Engineer to lead the design, validation, and industrialization of the electronic subsystems that power our e-bikes — with a particular focus on connectivity, from communication modules (BLE, GNSS, EDGE, LTE-M, Qi) to sensor systems. You’ll own hardware design end-to-end, from schematic through certification and productization, working closely with firmware, mechanical, and supply chain teams to bring robust, connected hardware to riders at scale. Experience with e-bike powertrains — BLDC motor systems and battery management systems — is a strong plus, as is hands-on experience navigating CE, RED, and other electronics certifications. Key Responsibilities Design and develop analog, digital, and mixed-signal circuits for Cowboy’s cellular/BLE/GNSS communication modules and sensor systems, including schematics, PCB layout + antenna layout, and design reviews. Select components based on performance, cost, availability, reliability, and lifecycle risk. Drive RED, CE certification, and EMC compliance for electronic subsystems, including test preparation, lab coordination, and issue resolution. Work with test houses and notified bodies. Technical follow-up of Asian suppliers doing outsourced development projects Validate hardware through bench testing, system integration, environmental and reliability testing, and field trials to confirm compliance with design specs. Bring up prototypes, troubleshoot hardware issues, perform root cause analysis, and implement corrective actions. Coordinate with EMS partners and component suppliers on manufacturing qualification and transfer. Participate in design reviews and provide technical input on system architecture, risk assessment, and design trade-offs. Maintain schematics, test reports, BOMs, qualification records, and engineering change documentation. Analyze test results and recommend design improvements for performance, manufacturability, and reliability. Work with the firmware team on embedded hardware and software co-design and integration. Implementing new powertrain systems onto ebikes (Battery management systems, BLDC motor, motor controller, torque sensors, …) Must haves Bachelor’s or Master’s degree in Electrical Engineering, Electronic Engineering, or a related field. At least 5-7 years of experience in electronic hardware design and development, ideally in automotive or e-mobility. Strong understanding of analog and digital circuit design principles. Strong, in-depth understanding of BLDC motors and control systems Understanding of the BMSs and battery protection mechanisms Experience with radio technologies such as BLE 4.0, EDGE, LTE-M, GNSS, Qi 1.2.4/Qi2.0 Experience creating schematics and PCB LGA/BGA layouts Experience in antenna placement within complex 3D environments Strong proficiency with Altium Designer Hands-on experience and willingness to manually assemble PCBs with solder paste and a reflow oven Hands-on experience with lab equipment: Vector Network Analyser, Oscilloscope, and logic analyser Experience with RED, EMC, and CE testing and certification processes. Strong hardware debugging, troubleshooting, and validation and verification skills. Able to manage multiple tasks, working both independently and within a multidisciplinary team. Nice to Have Experience with Nordic chips, and/or uBlox modules Experience with CANopen is a plus Experience with dynamic powertrain control systems Experience with battery-powered low-power systems Familiarity with EMS and manufacturing partner qualification processes. Experience with C++ and ZephyrOS Benefits 30 days holidays (20 legal + 10 extra legal at prorata ofc) 200 eur net allowance (office set up/internet) 10 eur/net per working day meal allowance (+/- 200 eur/month if 20 days worked) Extra hospitalization insurance (Alan) A Cowboy bike Hybrid working environment (flexible office and remote/work from home policy) A cafeteria plan to optimise your 13th month salary