You will get nRF9151 Firmware Development Using nRF Connect SDK and Zephyr RTOS
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Project details
Embedded firmware engineer specializing in cellular IoT solutions using the latest Nordic Semiconductor technologies. Proficient in rapid prototyping, robust firmware delivery, and worldwide device deployment for smart sensors, asset tracking, and industrial connected products.
Core Skills
nRF9151 Cellular IoT: Expertise in LTE-M, NB-IoT, DECT NR+, and global GNSS.
Firmware Development: Deep knowledge of AT commands, proprietary controls, and peripheral integration (UART, SPI, I2C, I2S, PDM) with real-time EasyDMA support.
Cloud & IoT Connectivity: Data publishing to AWS IoT and custom servers using MQTT, with secure HTTPS-based FOTA updates.
Advanced Power Performance: Utilization of the nRF Power Profiler and Power Class 5 for maximizing battery life (20–45% improvement).
Sensor Integration: Proven integration of temperature, accelerometer, and tilt sensors, supporting end-to-end IoT deployments.
Development Tools: Zephyr RTOS, nRF Connect SDK, Device Tree, CMake, and VS Code IDE.
Immediate Deployment: Own nRF9151 development kits and profiling equipment for instant project initiation.
Core Skills
nRF9151 Cellular IoT: Expertise in LTE-M, NB-IoT, DECT NR+, and global GNSS.
Firmware Development: Deep knowledge of AT commands, proprietary controls, and peripheral integration (UART, SPI, I2C, I2S, PDM) with real-time EasyDMA support.
Cloud & IoT Connectivity: Data publishing to AWS IoT and custom servers using MQTT, with secure HTTPS-based FOTA updates.
Advanced Power Performance: Utilization of the nRF Power Profiler and Power Class 5 for maximizing battery life (20–45% improvement).
Sensor Integration: Proven integration of temperature, accelerometer, and tilt sensors, supporting end-to-end IoT deployments.
Development Tools: Zephyr RTOS, nRF Connect SDK, Device Tree, CMake, and VS Code IDE.
Immediate Deployment: Own nRF9151 development kits and profiling equipment for instant project initiation.
Machine Learning Tools
PyTorchWhat's included $750
These options are included with the project scope.
$750
- Delivery Time 15 days
- Number of Revisions 5
- Number of Scenarios 5
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Source Code
+$500
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AB
Adam B.
Oct 15, 2025
Firmware Engineer – nRF52840 + Accelerometer Driver Integration
I had the pleasure of working with Bala on an embedded firmware integration project, and he was excellent from start to finish. Bala has deep expertise in sensor-to-MCU integration, particularly with accelerometers and Nordic nRF devices, and he quickly understood our requirements and delivered results efficiently.
He communicates clearly, is proactive about potential issues, and takes ownership of his work. I highly recommend Bala to anyone looking for a skilled, reliable embedded firmware engineer with strong experience in SPI/I²C sensor drivers, debugging, and low-power IoT systems. I would absolutely work with him again in the future.
He communicates clearly, is proactive about potential issues, and takes ownership of his work. I highly recommend Bala to anyone looking for a skilled, reliable embedded firmware engineer with strong experience in SPI/I²C sensor drivers, debugging, and low-power IoT systems. I would absolutely work with him again in the future.
RK
Ruslan K.
Aug 8, 2025
Zephyr Firmware
Very efficient and punctual in his work. True professional in his field. All milestones were completed in a timely manner and exceeded expectations.
RK
Ruslan K.
Jun 28, 2025
Optimize Firmware for nRF based PCB
CH
Chad H.
Apr 16, 2024
You will get nRF52840 Firmware Development Using nRF Connect SDK and Zephyr RTOS
Bala came though on what I asked for within the given timeframe. I will definitely use him again.
PD
Paul D.
Dec 9, 2023
Programmer for Nordic NCS nRF9160 Power Optimization
About Bala
Principal Embedded Firmware Engineer | nRF91 | nRF52 | nRF70 | Zephyr
100%
Job Success
Tamili, India - 9:50 pm local time
I help companies design and build reliable, production-ready connected devices — from prototype to mass deployment — with a strong focus on power optimization, connectivity, and scalability.
✔ Low power IoT device development
✔ Experience in Embedded Firmware design and architecture (design patterns, reliability and multithread)
✔ CE,FCC certification
✔End-to-end product development (Architecture → Firmware → Cloud → Production)
✔100% Client Recommendation
10+ years of full embedded development life cycle, including coding/standards, code reviews, source control management, build processes, testing, and operations experience.
Experience in leading an engineering team.
Core Expertise:
• Embedded C, C++, Python
• Zephyr RTOS, Matter (ConnectedHomeIP)
• LTE-M, NB-IoT, 4G/5G
• Power profiling, debugging (logic analyzer, oscilloscopes)
• Secure firmware & cybersecurity analysis
Hardware & Technologies:
• Nordic SoCs: nRF9160, nRF52840, nRF52833, nRF5340, nRF70, nRF54 series
• Cellular modules: Quectel, SIMCom
• UWB (Decawave), GPS, Cell-based positioning
• ESP32, Raspberry Pi, ARM Cortex-M systems
💡 What I deliver:
• Ultra-low power device optimization & battery life tuning
• Secure IoT connectivity (MQTT, HTTP, TLS, mutual authentication)
• Zephyr RTOS & nRF Connect SDK based development
• Sensor integration (I2C, SPI, UART, ADC, CAN, RS485)
• OTA / FOTA firmware update systems
• AWS IoT Core (Device provisioning, Shadow, OTA Jobs, Lambda, DynamoDB)
• Board bring-up, debugging & production support
🚀 Selected Projects:
• Medical wearable device (BLE + IoT gateway + ultra-low power)
• NB-IoT / LTE-M asset tracking system with GPS & cloud integration
• Smart sensor platform for environmental & industrial monitoring
• AI/ML edge device (YOLOv5, MediaPipe, Edge Impulse)
• Sound pressure level (SPL) monitoring device
• Production test fixtures for firmware flashing & validation
⚡ Why clients work with me:
• Strong architecture & problem-solving skills
• Experience leading engineering teams
• Focus on real-world deployment (not just prototypes)
• Clean, maintainable, and scalable firmware design
Steps for completing your project
After purchasing the project, send requirements so Bala can start the project.
Delivery time starts when Bala receives requirements from you.
Bala works on your project following the steps below.
Revisions may occur after the delivery date.
Project Requirements & Feasibility Review
Assess feasibility and propose optimized solutions leveraging the nRF9151’s capabilities.
System Architecture Design
Define hardware and firmware architecture, including connectivity (LTE-M/NB-IoT/DECT NR+), sensor integration, and cloud endpoints.