Embedded systems engineer

Embedded systems engineer Paris, on site
· Senior
· Full-time About Stronghold AI Stronghold AI is a European dual-use deep-tech start-up headquartered in Paris, building the AI platform for autonomous perception and cognition. Any sensor, any effector, one AI platform: our software turns cameras, microphones, RF and radar into decisions at the edge. AURA and LUMINA are the first two products built on it. We start with counter-drone because it is today's most urgent need; our ambition is to power perception and cognition across autonomous systems. Our mission is sharper awareness, faster decisions, and ultimately to protect lives. The role Our sensors are only as good as the hardware that carries them into the field. A camera that drops frames, a pan-tilt head that drifts or a connector that fails in the cold costs an operator time they may not have. As our embedded systems engineer, you will own that hardware, from the first prototype on the bench to kit that works outdoors in every season, and take products from conception to production. You will work alongside our AI, RF and software engineers, and see your work tested in the field within weeks. What you will do ▪ PTZ units: improve our existing pan-tilt-zoom units, and design new ones ▪ Firmware: write the firmware for motor control and peripherals ▪ Integration: connect cameras, sensors and cabling to embedded computers and edge GPU hardware ▪ Electronics: design and bring up PCBs, and review specialist hardware such as microphone arrays ▪ Motors and power: choose the motors and encoders that drive our PTZ units, and work out power budgets for field kit ▪ Ruggedising: explore how to make kit survive outdoors: sealing, connectors, heat, cold and vibration ▪ Sensor timing: work out how to keep cameras, microphones and RF receivers in step ▪ Test rigs: build bench fixtures so faults show up on the bench, not in the field ▪ Provisioning: flash and set up devices securely in the Paris office ▪ Components: choose the parts for your builds ▪ Documentation: leave a clear record of wiring, configurations and known issues What you will bring ▪ Proven embedded systems

experience:
firmware in C or C++, microcontroller development and board bring-up ▪ Practical electronics: schematics and datasheets, soldering, crimping, wiring and connectors, multimeters, oscilloscopes and logic analysers ▪ Hardware and firmware integration: UART, I2C, SPI, CAN, RS-485, USB, Ethernet and PoE; flashing firmware and reading diagnostic logs ▪ Hands-on prototyping: taking an idea through component selection, assembly, testing and iteration ▪ Experience taking a hardware product towards production ▪ Linux and scripting: command line, SSH, device configuration, Python or shell scripts ▪ Structured fault finding across hardware, firmware, software and networking ▪ Fluent French and working English ▪ An engineering degree or equivalent practical experience, with working prototypes you can show us Don't tick every box? Apply anyway. Ability and impact don't fit neatly into a list. Nice to have ▪ PCB design and bring-up with KiCad, Altium or similar ▪ Camera integration (MIPI CSI, USB or IP cameras) ▪ Embedded Linux or a real-time operating system ▪ Embedded Linux drivers, JTAG or SWD debugging ▪ Gimbal or pan-tilt mechanics and control loops ▪ EMC basics: grounding, shielding and filtering ▪ CAD and 3D printing for enclosures, mounts and test fixtures ▪ Battery-powered, outdoor or thermally demanding electronics ▪ Git, Docker or CI/CD workflows ▪ Experience in defence, drones or robotics ▪ Comfortable with general IT and system administration, for example helping keep a shared Windows or Linux GPU server running, with support from the team Who you are An embedded specialist first, with strong hands-on hardware skills. You are curious, you turn your hand to whatever the week needs, and you like owning a problem from the bench to the field. How we work ▪ You judge your work by how it performs in the field, not on the bench. ▪ You'll back an idea before it's proven, and you're honest enough to drop it if the evidence says no. ▪ You raise problems early, own your work through to delivery, and help new colleagues get up to speed. ▪ You design for cost, robustness and the user's conditions from day one. ▪ You want your work to matter, and you hold yourself to a high standard of honesty about results.

What we offer
▪ Early stock options: a real share in what we build, at the stage where it counts most ▪ A ground-floor seat: you join while the platform is taking shape, and your work decides what it becomes ▪ Your work in the field within weeks, not years ▪ A small, senior team where you own problems end to end ▪ Room to grow as new products and teams are built on the platform ▪ Work that matters: protecting people, and the security of Europe and its allies Equal opportunities We are an equal opportunities employer and welcome applications from all qualified candidates. Because of export control and security rules, this role may require eligibility for security clearance. We discuss any restrictions early in the process.

How to apply
Email careers@stronghold-ai.com with your CV and a short note on relevant work. Links to projects, code or systems you have built are welcome.