You will get a reliable firmware and hardware for embedded projects and QA tested

Name: You will get a reliable firmware and hardware for embedded projects and QA tested
Availability: InStock

Rajneesh S.

4.6

Rajneesh S.

4.6

Project details

Dear Client

I have more than 8 years of working experience in embedded domain and I have expertise in hardware design and firmware development.

[] Expert in:

- Embedded Firmware development
- Sensor library/driver development
- Over The Air (OTA) firmware update over BLE and WiFi
- Device to cloud communication. AWS, Google ioT core, Azure etc.
- PCB design, schematic, pick & place and BOM file

✅ Firmware development on following MCUs:

- Nordic Semi: nRF51422, nRF51822, nRF52832, nRF52810, nRF52840 and nRF52811 MCU
- Texas Instrument: CC2640R2F, CC2640/50, CC2540/41, CC2642R, CC2530, CC3220 MCU
- Dialog: DA14680/81/82/83 and DA14580/85
- Silicon Labs BGM13S, BGM11s, BLE121, EFR32
- STM8 and STM32
- Ti's MSP432
- ESP32 and ESP8266
- Raspberry Pi
- Arduino ATMEGA-328
- LoRa: Semtech SX126x, SX127x series

✅ Communication protocol:
- UART
- SPI
- I2C
- I2S
- RS-485
- CAN

✅ Cloud communication protocol:
- HTTP/HTTPs
- MQTT
- AWS IoT Core
- Google IoT
- Microsoft Azure
- JSON for data format

✅ Programming Language:
- C
- C++
- Python
- HTML, CSS
- JAVA, JAVA script

✅ Experience with following task management tools:

- JIRA
- Atlassian
- Agile Board
- Redmine
- Trello

Project Type

Data Analysis, Development, IT, QA, User Testing

What's included

Service Tiers	Starter $49	Standard $499	Advanced $1,999
Delivery Time	3 days	5 days	10 days
Number of Revisions	0	0	0

4.6

40 reviews

78% Complete

(31)

13% Complete

(5)

5% Complete

(2)

5% Complete

(2)

1% Complete

(0)

Embedded Hardware & Firmware Engineer - PCB Update + Testing Outstanding embedded hardware and firmware engineer. Delivered high-quality work with excellent attention to detail. Strong expertise in PCB design, microcontrollers, sensor integration, and firmware development. Communication was clear throughout the project, deadlines were met, and all revisions were handled professionally. Highly recommended for any embedded systems project.

Hardware Development Expert for XR Lighting Application Rajneesh has strong technical expertise in embedded systems and PCB design. He understands requirements quickly and provides efficient, practical solutions. His implementation was reliable and well-structured. Highly recommended for complex technical projects.

Firmware and Hardware Calei I have worked may years with Upwork, and try to be very fair, but this is the first time I have had been billed so many hour by a Individual/company and has not had any viable results due to his work. All you get from this individual is excuses, lots of talk, and not real results to make things right. He wants more hour added just to bill more. Its

BLE Firmware Development with nRF52832 MCU Really happy we found Rajneesh, serious, committed and sticks to timeline.

Experienced Embedded Systems Developer for Low-Power IoT Device Firmware It was a great experience working with Rajneesh on our Embedded IoT Firmware Development project. They demonstrated deep expertise in low-power embedded systems, sensor integration, and robust firmware design. Communication was clear and consistent throughout the project, and they proactively resolved challenges with professionalism and skill. The final firmware was well-documented, highly efficient, and met all of our technical requirements. We would not hesitate to work with them again and highly recommend them to anyone looking for a reliable and knowledgeable embedded systems developer.

About Rajneesh

Firmware & Hardware Design Specialist | BLE | nRF52 | CC2640 | ESP32

88% Job Success

4.6 (40 reviews)

Ahmedabad, India - 6:16 pm local time

I design and develop production-ready embedded systems, custom hardware, and IoT devices for startups and mid-scale companies.

If you need a BLE device, industrial controller, smart wearable, or connected IoT product. I can take it from concept to manufacturing.

I specialize in building reliable, low-power, scalable electronic products that are ready for real-world deployment.

End-to-End Product Development
• System Architecture & Component Selection
• Schematic Design
• Multi-layer PCB Layout (2–8 layers)
• Firmware Development (Bare-metal / RTOS)
• Sensor Integration & Calibration
• Wireless Connectivity
• Prototype Bring-up & Debugging
• Low Power Optimization
• DFM & Manufacturing Support
• Pilot & Production Assistance

Embedded Firmware Development
• C / C++
• FreeRTOS / Zephyr RTOS
• Bootloaders & OTA Updates
• Low Power Optimization
• Driver Development (SPI, I2C, UART, I2S, CAN)
• Modbus / RS485 / MQTT
• Battery Management & Power Profiling

Microcontrollers & SoCs
• STM32 (M0 / M3 / M4 / M7 / M33)
• ESP32 (Wi-Fi + BLE)
• Nordic nRF52 / nRF53 / nRF54
• TI CC2640 / CC2652
• Renesas / Dialog DA145xx / DA146xx
• NXP / PIC / ARM Cortex

BLE & Wireless Systems
• Bluetooth Low Energy (BLE)
• BLE Mesh
• Wi-Fi IoT
• LoRa / LoRaWAN
• Zigbee
• NB-IoT / LTE / Cellular
• Secure Device Provisioning

PCB & Hardware Design
• Altium Designer, KiCad, EasyEDA
• Schematic Design
• PCB Layout
• Gerber Files
• BOM Optimization
• Pick & Place Files
• Assembly Outputs
• DFM Review
• Mixed-signal Design
• RF Layout & Impedance Control
• EMI/EMC Considerations

Sensor & Interface Integration
• Environmental Sensors
• IMU / Accelerometer / Gyro
• Biometric Sensors
• Pressure & Gas Sensors
• High-speed ADC
• Protocols: SPI, I2C, UART, CAN, RS232, I2S

Industrial & Automation
• PLC Integration
• RS-485
• CAN Bus
• Motor Driver Circuits
• Industrial IoT Nodes

IoT Cloud & Mobile Integration
• AWS IoT
• Azure IoT
• MQTT / HTTPS
• OTA Firmware Updates
• Android / iOS Apps
• React-based Dashboards

Industry Experience
• Healthcare Devices
• Wearables
• Smart Home Systems
• Industrial Automation
• Automotive Electronics
• Agriculture IoT
• Retail Electronics

Why Clients Work With Me
• Strong Hardware + Firmware Combined Expertise
• Production-Oriented Design Thinking
• Deep BLE & Low-Power Specialization
• Clean, Maintainable Firmware Architecture
• Clear Communication & Reliable Delivery
• Focus on Long-Term Collaboration and Scalable Product Development

Steps for completing your project

After purchasing the project, send requirements so Rajneesh can start the project.

Delivery time starts when Rajneesh receives requirements from you.

Rajneesh works on your project following the steps below.

Revisions may occur after the delivery date.

Just initiate your discussion with me on your idea to get it started.

Share your project idea with us. We will help you to make the specification document and provide you the brief inside details as well as we will provide you the prototyping and production level of hardware and firmware development with QA testing.