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

- Robust 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

📌 Embedded Firmware Engineer – Wireless & Sensors (Hyderabad)
🏢 Quintessential Innovations
📍 Hyderabad