Unknown Company

Senior Firmware Engineer / FitnessTech

chicago, il • Posted 1 weeks ago
Onsite Full Time Software Architecture & Engineering

A rapidly growing consumer hardware and AI company is seeking a Senior Firmware Engineer, Connectivity, to join their full-time engineering team. This role can be based in the United States and focuses on building next-generation connected devices that blend embedded systems, cloud technology, and machine learning. The ideal candidate will bring deep expertise in Bluetooth Low Energy (BLE), embedded development in C/C++, and wireless device architecture while helping scale a globally deployed product platform.

Required Skills & Experience

  • 5+ years of embedded software or firmware engineering experience
  • 3+ years building and shipping BLE-enabled products
  • Strong understanding of Bluetooth protocols including GAP, GATT, L2CAP, SMP, and BLE security
  • Expertise with C and/or C++ development on microcontrollers
  • Experience with embedded peripherals including UART, SPI, I2C, and DMA
  • Hands-on debugging experience using oscilloscopes, logic analyzers, and protocol sniffers
  • Experience deploying OTA firmware updates in production environments
  • Knowledge of low-power device optimization techniques

Desired Skills & Experience

  • Nordic Semiconductor platform experience
  • Zephyr or nRF Connect SDK experience
  • Consumer electronics or IoT product experience
  • Secure boot and embedded security knowledge
  • Regulatory certification experience (FCC, CE, Bluetooth SIG)
  • Manufacturing support experience
  • Python or Node.js tooling experience
  • Multi-device BLE architecture expertise

What You Will Be Doing

Tech Breakdown

  • 70% Embedded Firmware Development
  • 20% Wireless Connectivity & RF Optimization
  • 10% Automation, Tooling & Testing

Daily Responsibilities

  • 80% Hands-On Engineering
  • 5% Leadership & Mentorship
  • 15% Cross-Functional Collaboration

The Offer

  • Bonus eligible

You Will Receive The Following Benefits

  • Medical, Dental, and Vision Insurance
  • Vacation Time
  • Stock Options

Applicants must be currently authorized to work in the US on a full-time basis now and in the future.

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