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Embedded / Firmware Engineer — Wearables
Embedded / Firmware Engineer — WearablesONLYQ • Pune/Pimpri-Chinchwad Area, India
Embedded / Firmware Engineer — Wearables

Embedded / Firmware Engineer — Wearables

ONLYQ • Pune / Pimpri-Chinchwad Area, India
2 days ago
Job description

Company Description

At  ONLYQ , we’re reimagining what a health wearable can be.

No screens.

No noise.

Just  pure physiological intelligence , wrapped in a design that feels invisible but works continuously for you.

We’re building the next-generation  screenless health band  powered by :

  • Clinical-grade ECG & PPG
  • Bioimpedance + Temperature sensing
  • IMU fusion
  • AI-driven biomarker analytics
  • Women’s health & autonomic intelligence
  • Preventive, personalised insights

Our mission :

A Lab on Hand — for every human.

ONLYQ is a  self-funded initiative  by the founders of Cymetree Projects LLP, giving us the freedom to innovate with long-term vision, zero bureaucracy, and global ambition.

And now, we’re assembling our core team.

Role Description & Qualification -

Firmware Development

  • Develop, optimize, and maintain firmware on  Nordic nRF52 / nRF54 Series (BLE 5.2 / 5.4)
  • Implement ultra-low-power firmware architecture (sleep modes, RTC, timers)
  • Build and optimize firmware for  real-time physiological signal acquisition  (ECG, PPG, BioZ, Temperature, IMU)
  • Sensor Integration

  • Integrate and calibrate sensors such as :
  • AS7058 (PPG + ECG AFE)
  • AFE4950 (BioZ + ECG)
  • MLX90632 (Temperature)
  • AD5940 (Bioimpedance)
  • Bosch BHI380 (IMU Fusion)
  • BME688 (Environmental sensing)
  • Communication & Protocols

  • Implement BLE services (Nordic SoftDevice)
  • Create custom BLE GATT profiles
  • Support OTA updates (DFU)
  • System Architecture & Reliability

  • Develop robust state machines, task schedulers, and interrupt-driven firmware
  • Optimize for power, latency, and memory footprint
  • Debug using JTAG / SWD, logic analyzers, and oscilloscopes
  • Testing & Validation

  • Unit testing, sensor calibration routines, and quality benchmarking
  • Work with hardware team for DVT / PVT / MP testing
  • Educational Qualifications

    Minimum : B.E. / B.Tech  in :

  • Electronics Engineering
  • Electronics & Telecommunication (E&TC)
  • Electrical Engineering
  • Instrumentation Engineering
  • Computer Engineering
  • Biomedical Engineering (with strong embedded exposure)
  • Preferred : M.E. / M.Tech  in :

  • Embedded Systems
  • VLSI
  • Electronics Design
  • Biomedical Instrumentation
  • (OR equivalent specialization)
  • Additional Preferred Certifications :

  • Embedded Systems diploma / certificate (CDAC, NIIT, Coursera, etc.)
  • RTOS / Embedded Linux courses
  • BLE firmware development certifications
  • Core Skills

  • Excellent command of  C / C++  for embedded systems
  • Experience with  ARM Cortex-M  microcontrollers
  • Strong understanding of  I2C, SPI, UART , DMA, interrupts
  • Experience with  Nordic nRF SDK / Zephyr OS
  • Power-optimized firmware design
  • Sensor integration & real-time data streaming
  • Wearable-Specific Required Skills

  • Experience with  PPG, ECG, IMU, BioZ  sensor integration
  • Real-time signal acquisition and filtering
  • Noise reduction + motion compensation knowledge
  • Experience with low-power wireless protocols
  • Preferred Skills (Bonus)

  • Experience in  medical / wellness devices
  • Understanding of physiological signal processing (ECG / PPG / HRV basics)
  • Experience with  RTOS (FreeRTOS / Zephyr)
  • Mobile app / BLE debugging tools (nRF Connect, LightBlue)
  • Experience working with manufacturing / ODM teams (China / Taiwan / India)
  • Create a job alert for this search

    Firmware Engineer • Pune/Pimpri-Chinchwad Area, India

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