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

Cowboy is a Brussels-based e-bike start-up that mixes design elegance, affordability, and technology to connect owners to their bikes through an app, featuring a secure key, live stats, and GPS tracking.

The company was founded in 2018 by Adrien Roose, Karim Slaoui, and Tanguy Goretti.

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

Electronics Hardware Engineer

About the Job

About the Company

Cowboy

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