Firmware Engineer – Reelables
Join Reelables and help us transform how the world tracks packages! We are pioneering paper‑thin smart shipping labels that use Bluetooth and 5G to track millions of packages worldwide.
You'll architect embedded systems powering real‑time asset tracking across billion‑dollar supply chains. From designing low‑level firmware that interfaces with sensors and Bluetooth modules to optimizing performance for edge devices, your work will directly impact logistics teams around the globe.
Technical Expertise
* Mastery of C/C++ for embedded systems.
* Strong experience with Bluetooth LE (BT 5.x) stack integration and development.
* Experience with cellular modem firmware (LTE Cat-1, LTE-M, NB‑IoT) including AT‑command interfaces and low‑level API stack integration.
* Solid understanding of embedded RTOS environments (e.g., FreeRTOS).
* Hardware bring‑up and peripheral experience: GPIO, I²C, SPI, UART, ADC/DAC, etc.
* Proficiency in debugging with JTAG/SWD, logic analyzers, and oscilloscopes.
* Extremely low‑power firmware techniques: sleep states, duty cycling, wake‑on‑events.
* Wireless protocol knowledge (Bluetooth, 3GPP specs relevant to LTE‑M/NB‑IoT).
* Version control (Git) for embedded projects.
Problem Solving & Ownership
* Take ownership of end‑to‑end firmware development, from prototype to production.
* Comfortable with early‑stage hardware/software co‑design and debugging.
* Strong analytical and troubleshooting skills under time constraints.
Technical Depth
* Familiarity with eSIM/eUICC and carrier certification processes (GCF, PTCRB).
* Experience with OTA firmware updates, bootloaders, secure boot and provisioning.
* Security features: TLS, secure key storage, encryption techniques.
* Optimizing ultra‑low‑power IoT devices.
* Mass‑production provisioning and calibration techniques.
* Python for test automation.
Domain & Industry
* Strong prior experience in IoT product development lifecycle (dev kits to shipping product).
* Familiarity with regulatory compliance (FCC, CE, ETSI, carrier lab certification).
* Nice to have low‑level SDK experience with Qualcomm or other cellular chipset vendors.
Seniority Level
Mid‑Senior level
Employment Type
Full‑time
Job Function
Supply Chain
Industries
Transportation, Logistics, Supply Chain and Storage
Referrals
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Location
London, England, United Kingdom
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