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Open nowPosted 80 days ago

Embedded Firmware Engineer – Wireless & Sensors

Quintessential20 open roles

Where
Hyderabad
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Your applicationOpen nowEmbedded Firmware Engineer – Wireless & SensorsQuintessential · Hyderabad

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The clock on this job

Early applications get read.

12.1% of postings close within 7 days. Measured by our own scanner across the market. Quintessential postings stay open a median of 1 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.1%7 days
  4. 19.1%14 days
  5. 35.6%30 days
  6. 52.7%60 days
This job: posted 80 days ago

Quintessential median: 1 days open

The posting

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
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