Senior Firmware Engineer
Full-time | Hybrid | Amstelveen, Netherlands
Own the firmware at the heart of Saef, where every nanoamp matters.
The role
Saef's hardware comes alive in its firmware. It runs on a tiny, power-constrained device that has to stay reliable, secure, and connected inside a luxury watch for years. As Senior Firmware Engineer at Saef, you own it. You'll architect and write the embedded software that drives our hardware, make power harvesting and ultra‐low‐power operation work in practice, and keep the device talking cleanly to the app. This is a hands‐on senior role working shoulder to shoulder with our hardware architect and the app team.
What you'll get
Real responsibility from day one in a small, senior team
Ownership of the firmware at the core of the product
Pension scheme
Travel expenses covered
Company laptop
What you'll do
Architect, write, and ship the embedded firmware that runs our hardware
Own power management and ultra‐low‐power operation; on a device this small, every nanoamp matters
Build and harden the BLE connectivity layer between device and app
Work hand in hand with the hardware team through bring‐up, debugging, and iteration on real silicon
Build with security and reliability as first principles; a device that fails or can be tampered with breaks the promise we sell
What we're looking for
5+ years writing production embedded firmware, ideally in C/C++ on resource‐constrained microcontrollers
Deep experience with low‐power design and real‐world power optimisation
Solid command of BLE and wireless connectivity in embedded contexts
Comfort working close to hardware: schematics, datasheets, oscilloscopes, and board bring‐up
A bias toward shipping working firmware over perfect abstractions, paired with sound engineering judgment
Effective in a small, in‐person, high‐trust team
Nice to have
Experience with energy harvesting or battery‐free designs
Familiarity with secure boot, cryptography, or hardware security on embedded devices
Exposure to consumer hardware, wearables, or miniaturised electronics
Experience taking an embedded product from prototype through certification to production
About Saef
Saef is building the new protection standard for luxury watches. Invisible, always‐on hardware goes into the watch. A phone app tells the owner where it is and that it's safe. We're a small, senior team of engineers and designers that treats this as a system‐level problem: hardware, software, security, and trust, all built together. We're launching with select partners,with beta planned in 2027. We can demo a real working product at any stage of development. That's not a tagline. It's how we work.
Senior FIRMWARE Engineer in Amsterdam werkgever: Saef BV
Bij Saef krijg je de kans om een cruciale rol te spelen in het ontwikkelen van innovatieve firmware voor luxe horloges. We bieden een stimulerende werkomgeving met een klein, hecht team waar je vanaf dag één verantwoordelijkheden krijgt en volop mogelijkheden voor persoonlijke groei. Met een focus op samenwerking, betrouwbaarheid en veiligheid, is Saef de ideale plek voor ervaren engineers die willen bijdragen aan baanbrekende technologie.
