Hire the Best ESP32 Freelancers
in India

I am an electronics and firmware developer with experience in PCB design, firmware development, prototyping and SMD assembly. My journey started with hand crafting single sided PCBs — giving me a strong practical foundation from the ground up. PCB Design: 2 and 4 layer PCB design in KiCad 8,Kicad 9(Soon migrating to Kicad 10) & EasyEDA(Standard & Pro version) . Former EagleCAD user Schematic to manufacturing ready layout Custom footprint creation Gerber, drill, pick and place and BOM files Full submission support for JLCPCB(PCB & PCBA) and similar manufacturers Assembly & Prototyping: SMD soldering — 1206-0402 passives, QFN, TSSOP (except BGA) Through hole soldering Small batch prototype assembly Component procurement support Firmware & Connectivity: Microcontrollers — ESP32, ESP8266, Arduino, AVR, 8051 Cellular — Quectel EC25 & SIMCom SIM7672 with MQTT SSL/TLS Wireless — LoRa, WiFi, Bluetooth, GSM GPS — Ublox & Quectel module integration Displays — OLED, TFT, capacitive touch Protocols — I2C, SPI, UART, MQTT SSL/TLS, HTTP REST Motor drivers, WS2812 LED arrays, power circuits GPS- Quectel L89, Ublox M10S Special - WS2812 Led Projects include: GPS trackers, GSM security systems, water level controllers, , line followers, obstacle detection robots, WS2812 LED arrays and various ESP32 and Arduino IoT devices. I am a full time freelancer committed to clear communication and timely delivery — working with hobbyists, startups and commercial clients alike. Feel free to reach out!

I am an Android Developer with over 6 years of experience, having developed and published several applications available on the Play Store. In addition, I have approximately 7 years of hands-on experience with Arduino and ESP microcontrollers, allowing me to guide, debug, and contribute to electronic projects effectively. Beyond mobile development, I have 3 years of experience working with Django and some proficiency in PyQt for desktop applications. As a full-time freelancer, I am committed to delivering high-quality projects efficiently. If you're looking for someone who can bring your ideas to life or troubleshoot your existing code, feel free to reach out. Look forward to collaborate with you!

~ I have 15+ years of experience in the embedded systems design and implementation. ~ I have worked with different type of systems using RTOS, embedded Linux, Linux ~ More than 10 years of experience in IoT, Home automation systems. ~ Expert in working with Mesh network using ZigBee, BLE, and ANT. ~ Integration of well-known clouds in IoT echo system including AWS, Ayla, Evrythng, Azure. ~ Delivering the End-to-End product solutions from the scratch. ~ Experience with ZigBee Product Certification process. ~ Very Good knowledge of Product Development Life Cycle and SDLC. I have been working with different organizations starting from Embedded Engineer to Technical Lead and now a full-time freelancer. My Expertise: I have worked with diverse technologies throughout my career keeping Embedded firmware design and development in the center. I hold the expertise in following areas. 1. Embedded firmware development 2. Cloud integration 3. Board bring up and prototype validation. 4. Mesh Network design 5. Custom Mesh Network implementation 6. Prototype design and development 7. Product development using IoT ecosystem. 8. Automotive domain 9. Documentation 10. Production-Jig supprt Skills: C | C++ | Python | shell scripting BareMetal | FreeRTOS | coOS | eCOS | Raspbian | Linux | Mbed OS | Zypher FCC certifications [BLE, Wifi, Zigbee] BLE | Wi-Fi | ZigBee | Thread | Matter | RFID | NFC Cloud Integration: AWS IoT core | evrythng | Ayla | Azure Micro-controllers Worked on: TI's cc2540 Dialog's DA14531 Espressif's - ESP32 | ESP8266 | ESP32-S2 | ESP32-S3 | ESP32-C3 | ESP32-C6 | ESP32-H2 Nordic's -nRF54, nRF5340 | nRF91 | nRF51422 | nRF51822 | nRF52811 | nRF52832 | nRF52840 | nRF52833 ST Microelectronics' STM32 | STM8 Silicon Labs BG11, EFR32MG22, EFR32MG24, EFM32 Freescale S12GN32 NXP's LPC 1758 | LPC1768 | LPC1778 | ARM9 KW24Z | KW41Z | JN5168 | JN5169 | JN5179 | CC2540 MW300 | EFR32, EFM32 (silicon labs) | Beaglebone Black | Raspberry Pi iMX6UL GSM/GPS/CDMA chips UBLOX | Cinterion® PHS8-P(GSM) | Cinterion® PCS3 (CDMA) BG 96, Nordic'snRF91 Series SIM 7070G, SIM7600, SIM7670 Quectel EM06, Quectel EC200 Protocols: TCP/IP | HTTP | HTTPS | MQTT | MQTTS | Web Sockets | MDNS | GPRS | GPS | CAN | LIN Zigbee3.0 | THREAD | 2.4 GHz Raw Radio | ANT | BLE | Wi-Fi | NFC | RFID (WEIGAND (Proximity Reader) UART | I2C | SPI | ETHERNET | USB | PWM | MODBUS (RS-485) Frameworks: 1. ESP-IDF V4.0 to V5.4 2. NCS (nRF connect SDK) 3. nRF5 SDK v4.0.0 to v17.0.1 4. Gecko SDK 3.x onwards 5. platform IO 6. Arduino

Passionate Internet of Things (IoT) developer with over 5+ years of hands-on experience in creating cutting-edge IoT products and applications. I specialize in: * Bluetooth & Wearable Apps * IoT Apps Development * IoT Consulting * IoT Embedded Development * Cloud Services * Backend Solutions * Manufacturing I have a proven track record of transforming ideas into functional and innovative solutions. Expertise: Hardware & Software Development: Skilled in designing intuitive mobile and web applications that integrate seamlessly with IoT devices for remote monitoring, control, and data analysis. High-Quality Solutions: Committed to delivering exceptional results that exceed client expectations. Collaborative Team Player: Thrive in dynamic environments, working closely with cross-functional teams to ensure seamless integration of hardware and software components. My goal is to create impactful and efficient IoT systems that enhance lives and businesses.

Embedded Systems Architect | ESP32, nRF52/nRF54, STM32, Real-Time Systems I design and debug real-time embedded systems where multiple microcontrollers, sensors, and communication layers must work reliably under real-world constraints. My core expertise includes embedded firmware, low-level communication, sensing systems, and distributed edge devices built around ESP32, nRF52/nRF54, STM32, Raspberry Pi, Embedded Linux, BLE, LoRa/LoRaWAN, MQTT, SPI, UART, I2C, RTOS, UWB, and radar-based sensing. I’m strongest when a project involves: - Multi-MCU coordination - Low-level communication debugging - Sensor integration such as radar, GPS, IMU, capacitive touch, or industrial interfaces - Edge gateways and cloud-connected embedded systems - Turning an unstable prototype into reliable product behavior What I do best - ESP32 / ESP-IDF firmware development - nRF52 / nRF54 firmware using Zephyr and nRF Connect SDK - STM32 embedded firmware and real-time system design - FreeRTOS, Zephyr, and CMSIS-RTOS v2 architectures - BLE, LoRa/LoRaWAN, MQTT, and multi-device coordination - Low-level debugging across SPI, UART, I2C, BLE, RTOS, and custom buses - Embedded Linux / Raspberry Pi edge gateway systems - Node-RED, Balena, Docker, and remote deployment workflows - Radar, UWB, and real-time sensing/control systems - Industrial IoT integration and system reliability hardening Highlights - Ported production firmware from ESP32 to nRF54L15/Zephyr, including BSP, communication layers, BLE transport, and OTA/DFU support - Worked on distributed multi-controller systems using ESP32, nRF, and STM32 - Integrated TI IWR6843 mmWave radar for presence sensing and spatial event handling - Brought up UWB ranging (DW3000) on STM32 in a multi-device system - Built ESP32 + Raspberry Pi edge systems using MQTT, Node-RED, Balena, and remote deployment workflows - Built LoRaWAN-based tracking and monitoring systems with cloud dashboards and alerting - Supported industrial IoT deployments involving automation, CI/CD, remote monitoring, and field reliability Relevant Experience - Commercial Embedded Sensing & Control Platform (NDA): ported production firmware from ESP32 to nRF54L15/Zephyr; integrated BLE with encrypted transport, external flash, and MCUboot OTA/DFU; improved custom wired communication reliability; contributed to radar-based sensing and multi-device coordination - Industrial IoT Gateway Systems: built ESP32 sensor node + Raspberry Pi gateway architectures with real-time edge processing, MQTT communication, and remote configuration - Tracking, Monitoring & Edge Integration: built telemetry and monitoring pipelines for distributed edge devices using LoRaWAN, Balena, Node-RED, Supabase, and cloud dashboards - Industrial Integration & Automation: worked with Phidget-based interfaces, Yaskawa robot-related connectivity, Node-RED automation flows, CI/CD, and Balena-based deployment - Automotive Embedded Foundation — Hella: 4+ years in automotive embedded systems; worked on body control and electronic power steering programs with AUTOSAR, MISRA-compliant embedded development, CAN/LIN, diagnostics, requirement derivation, software architecture, IBM Rhapsody, and TPT Tech Stack - MCUs / Platforms: ESP32, nRF52, nRF54, STM32, Raspberry Pi, Embedded Linux - RTOS / Frameworks: ESP-IDF, FreeRTOS, Zephyr, nRF Connect SDK, CMSIS-RTOS v2 - Protocols / Interfaces: SPI, UART, I2C, BLE, LoRa/LoRaWAN, MQTT, CAN, LIN - Specialized Areas: UWB / DW3000, TI IWR6843 mmWave radar, OTA / DFU, PLC-style communication, Protocol Buffers / nanopb - Languages: C, C++, Python If your project involves firmware, sensing, real-time communication, edge gateways, industrial IoT, or multi-device embedded systems, I can help design, debug, and harden it for real-world use.

Firmware, Embedded systems software, C/C++/Assembly, BLE, Sub-GHz, LoRA, Wi-Fi, Thread, Matter, Zigbee, IoT, BLE Mesh network, various MCU's, Zephyr nrf connect sdk, stm32 sdk, various ble sdk