Embedded Firmware Engineer – Wireless & Sensors

quintessential· Engineering
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📍 Hyderabad, TG, IndiaFULL TIME

About this role

Embedded Firmware Engineer – Wireless & Sensors

Location:

Hyderabad

Experience:

4–6 years

Job Overview

We are looking for a skilled Embedded Firmware Engineer with strong experience in Bluetooth Low Energy (BLE) and embedded systems, along with a solid foundation in Digital Signal Processing (DSP). The ideal candidate will work on high-performance, low-power wireless devices involving sensor data acquisition, real-time streaming, and advanced signal conditioning using filtering techniques.


Key Responsibilities

  • Design, develop, and maintain firmware for embedded systems with a focus on Bluetooth Low Energy (BLE) communication
  • Work with Wi-Fi and other wireless technologies (optional but preferred)
  • Interface and integrate sensors such as:
    • Accelerometers
    • Gyroscopes
    • Other IMU / environmental sensors
  • Implement Digital Signal Processing (DSP) techniques for real-time sensor data analysis
  • Design and apply filtering techniques such as:
    • Low-pass, high-pass, and band-pass filters
    • Moving average and exponential smoothing filters
    • Sensor fusion filters (e.g., complementary filters, basic Kalman filtering)
  • Develop solutions for high-frequency data acquisition and streaming over BLE and/or Wi-Fi
  • Implement and optimize mesh communication protocols
  • Work extensively with Nordic Semiconductor (nRF) platforms, including:
    • nRF5 SDK
    • nRF Connect SDK (NCS)
  • Design and optimize data storage systems using NOR Flash, ensuring efficient:
    • Data logging
    • Retrieval
    • Wear leveling (if applicable)
  • Optimize firmware for:
    • Low power consumption
    • Bluetooth range and reliability
    • System performance and latency
  • Debug, test, and validate firmware using standard tools (JTAG, RTT, logs, etc.)
  • Collaborate with hardware, mobile, and backend teams for system integration


Required Skills & Qualifications

  • Strong experience in Embedded C/C++ programming
  • Hands-on experience with BLE stack development and debugging
  • Solid understanding of Digital Signal Processing (DSP) concepts, including:
    • Sampling theory and aliasing
    • Noise reduction techniques
    • Time-domain and basic frequency-domain analysis
  • Experience implementing filters on embedded systems for real-time data conditioning
  • Experience working with sensor data acquisition and processing (IMU preferred)
  • Solid understanding of:
    • Real-time systems
    • Interrupts, timers, and low-power modes
  • Experience with nRF52/nRF54 series or similar MCUs
  • Familiarity with high-throughput data transfer over BLE
  • Experience with flash memory management
  • Understanding of wireless communication fundamentals
  • Experience in production-grade firmware development
  • Familiarity with mobile app interaction (BLE central side)


Preferred Qualifications

  • Exposure to power profiling and optimization tools
  • Experience with OTA (Over-the-Air) firmware updates
  • Knowledge of RTOS (Zephyr preferred for NCS)
  • Experience with sensor fusion algorithms (e.g., orientation estimation using IMU data)
  • Experience implementing or working with BLE Mesh or other mesh protocols
  • Experience with Wi-Fi-based embedded systems
  • Experience in wearable devices / IoT products
  • Familiarity with FFT or spectral analysis in embedded environments

Soft Skills

  • Strong analytical thinking, especially for signal interpretation and noise handling
  • Strong problem-solving and debugging skills
  • Ability to work independently and in cross-functional teams
  • Good communication and documentation skills

Cross-Functional Collaboration

  • Work closely with hardware engineers to co-design power-efficient systems
  • Align on RF performance tuning and BLE/Wi-Fi optimization
  • Enable efficient sensor data pipelines and storage systems
  • Jointly debug system-level issues across hardware and firmware

Frequently Asked Questions

Is the salary disclosed for the Embedded Firmware Engineer – Wireless & Sensors position at quintessential?
The salary for this Embedded Firmware Engineer – Wireless & Sensors role at quintessential is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Embedded Firmware Engineer – Wireless & Sensors position at quintessential located?
This Embedded Firmware Engineer – Wireless & Sensors role at quintessential is based in Hyderabad, TG, India. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Embedded Firmware Engineer – Wireless & Sensors role at quintessential full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Embedded Firmware Engineer – Wireless & Sensors role in the Engineering department at quintessential.
Which team or department does the Embedded Firmware Engineer – Wireless & Sensors at quintessential belong to?
This Embedded Firmware Engineer – Wireless & Sensors position is part of the Engineering department at quintessential. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Embedded Firmware Engineer – Wireless & Sensors position at quintessential?
Click the "Apply Now" button on this page. You will be redirected to quintessential's official application portal hosted on keka where you can submit your application directly.
When was the Embedded Firmware Engineer – Wireless & Sensors job at quintessential posted?
This Embedded Firmware Engineer – Wireless & Sensors position at quintessential was posted on Aug 5, 2026. Apply as soon as possible — early applications are often reviewed first.
Embedded Firmware Engineer – Wireless & Sensors
quintessential
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