🎁 Before you apply, rehearse this interview. Create your free WorkMundi account and get an Interview Training on HelpsYouSpeak — no cost, no card. I want my training →
Embedded Firmware Engineer Wireless & Sensors Location: Hyderabad Experience: 46 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 .
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.