Hire the Best Embedded Applications Freelancers
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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!

Are you looking for a single engineer who can design your hardware, develop the firmware, bring up the board, debug complex issues, and help take your product all the way to production? You're in the right place. I have 11+ years of experience developing production-ready embedded systems for Automotive, EV, Industrial Automation, IoT, Robotics, and Consumer Electronics. I help startups and product companies transform ideas into reliable, manufacturable products. Unlike many freelancers who specialize in either hardware or firmware, I provide complete end-to-end embedded product development, allowing you to work with a single engineer throughout the entire product lifecycle. 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗕𝘂𝗶𝗹𝗱: • Custom Embedded Products • Electronic Control Units (ECUs) • IoT Devices • EV & Automotive Electronics • Industrial Automation Systems • Robotics & Smart Devices • Sensor & Data Acquisition Systems • USB Devices & Communication Interfaces • Motor Control Systems • Custom Development Boards • Rapid Prototypes & Production Hardware 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: • Schematic Design • PCB Design (KiCad) • Component Selection • Hardware Architecture • Board Bring-up • Prototype Validation • Hardware Debugging • Manufacturing Support • Design for Manufacturing (DFM) 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: • Embedded C • Bare-Metal Firmware • FreeRTOS & Zephyr RTOS • Device Drivers & BSP • Bootloaders • Firmware Architecture • Hardware Abstraction Layer (HAL) • Performance & Memory Optimization • Low Power Optimization • Production-Ready Firmware 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: • STM32 • ESP32 • NXP S32K • Renesas RH850 • Infineon AURIX • Nordic nRF52 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀: • CAN • CAN FD • LIN • USB • UART • SPI • I²C • RS-485 • BLE • Wi-Fi • OBD-II • UDS 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Over the past 11+ years, I've contributed to production software and embedded systems for global OEMs and Tier-1 suppliers, including Volvo, Daimler, Renault-Nissan, Hyundai, Geely, Mahindra, and ZF. This experience has given me a deep understanding of building reliable, high-quality embedded systems that perform in demanding real-world environments. Today, I bring the same engineering discipline to startups and businesses developing innovative embedded products across a wide range of industries. 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗘𝘅𝗽𝗲𝗰𝘁: • One engineer for both Hardware & Firmware • End-to-end product development • Clean, maintainable, production-ready solutions • Systematic debugging & root cause analysis • Clear communication and regular progress updates • Long-term engineering support as your product evolves Whether you're starting with an idea, building your first prototype, improving an existing design, solving difficult hardware or firmware issues, or preparing a product for manufacturing, I'm here to help. Let's build your next embedded product together.

I am an Electronics Engineer with 12+ years of experience designing embedded systems, custom electronics, and Windows desktop applications. My expertise includes PCB design, STM32 microcontroller programming, firmware development, and hardware-software integration using C#, WinForms, and WPF. I build reliable solutions that connect physical devices with desktop applications through Bluetooth, RFID, TCP/IP, Serial (UART/RS-232/RS-485), USB, and other communication protocols. I have developed solutions for industrial automation, RFID systems, IoT devices, data acquisition, and custom hardware interfaces, taking projects from circuit design and PCB development to firmware and desktop software. Whether you need a custom PCB, STM32 firmware, or a Windows application that communicates seamlessly with your hardware, I focus on delivering robust, maintainable, and production-ready solutions.

I am an embedded systems specialist with over 8 years of experience in developing software, firmware, and hardware solutions. I’ve successfully delivered 100+ projects that integrate cutting-edge functionalities—from multi-threading and AI-on-edge to seamless wireless connectivity. ------------------------------ Core Competencies: ➡️ Microcontrollers -- Proficient with TI, STM32, ESP32, ESP8266, Atmega, and a wide range of Arduino boards. ➡️ Frameworks -- Expertise in bare-metal programming, FreeRTOS, STM32Cube, ESP-IDF, Arduino, and PlatformIO. ➡️ Linux -- Experience developing on x86, ARM, and Raspberry Pi systems. ➡️ Electronics -- Skilled in sensor integration, display management, and PCB design. ➡️ Wireless Protocols -- Deep knowledge of Bluetooth Low Energy (BLE), WiFi, Xbee, Zigbee, ESP-Now, LoRa, low-frequency radio, and mesh networking solutions. ➡️ Wired Protocols -- Familiar with SPI, I2C, RS232, RS485, UART, CAN-Bus, and more. ➡️ UI Frameworks -- Proficient in creating graphical interfaces using bare-metal techniques, LVGL, and Qt QML. ➡️ Platform integration -- Experience integrating embedded systems with cloud platforms and IoT solutions such as AWS IoT, Azure, and ThingsBoard, utilizing MQTT, REST, and other gateway protocols. ------------------------------ Project Highlights: ✅ Real-Time Multi-Threading -- Implemented robust solutions using FreeRTOS. ✅ AI-on-Edge -- Integrated AI functionalities into constrained embedded environments. ✅ Wireless Connectivity -- Delivered projects with WiFi, BLE, LTE, LoRa, Zigbee and others. ✅ Advanced Networking -- Developed mesh networking solutions implemented over a variety of protocols like ESP-Now, Radio, BLE, XBee, etc. ✅ Power Management -- Utilized deep-sleep modes, watchdog timers, and ULP cores for energy efficiency. ✅ User Interfaces -- Designed intuitive touch interfaces and captive portals, often paired with companion mobile apps. ✅ Device Management -- Executed comprehensive device management strategies, including OTA updates, fault recovery, and remote monitoring. ------------------------------ What I Offer: 💾 Firmware Design: With 8+ years of coding expertise, I provide rapid and reliable firmware development tailored to your hardware. ☁️ Cloud Setup: I can setup your IoT Platform backend including Amazon AWS, Azure, and even open-source solutions like Thingsboard. ⚡ Hardware Engineering: From schematics and circuit design to component selection and PCB layout, I cover the entire hardware development lifecycle. 📱 GUI Integration: Specializing in embedded products with graphical user interfaces, I leverage LVGL and Qt to create user-friendly, visually appealing designs. ------------------------------ I am passionate about exploring new technologies and continuously expanding my expertise. While I may not know every technology off the bat, I commit to learning what’s needed—without charging for my learning time. I’d be delighted to discuss your ideas and explore how we can bring them to life. Best Regards, Ravi Kharb

I help startups and companies turn ideas into intelligent connected products — combining IoT hardware, AI systems, and scalable software platforms. With 8+ years of hands-on experience, I design and build complete solutions ranging from embedded devices and firmware to AI-powered analytics platforms and cloud applications. My work spans Arduino, Raspberry Pi, ESP32, STM32, and modern backend technologies used to power real-world IoT and AI systems. If you need someone who can build the entire technology stack — hardware, AI, cloud, and software — not just a small piece of it, you’re in the right place. 💡 What I Can Build for You 🔧 Custom IoT Product Development End-to-end development of connected devices — hardware architecture, firmware, cloud integration, and production-ready systems. 🧠 AI & Machine Learning Systems Custom AI models for predictive analytics, anomaly detection, automation, and intelligent decision-making in connected devices. 🖼️ Computer Vision Applications Face detection, object recognition, quality inspection, surveillance systems, and edge-AI solutions using OpenCV and modern ML frameworks. 💻 AI-Powered Software Platforms Development of intelligent dashboards, analytics platforms, and automation tools using Python, Node.js, React, and modern cloud infrastructure. 📡 Sensor Integration & Data Acquisition Environmental monitoring, industrial telemetry, motion detection, and real-time data processing systems. 🛠️ Firmware & Embedded Programming Highly optimized firmware for ESP32, STM32, ATmega, Raspberry Pi, and other microcontrollers. ☁️ Cloud IoT & Data Platforms Secure device connectivity, MQTT systems, AWS IoT, Firebase, Blynk, and custom APIs for remote monitoring and control. ⚙️ Rapid Prototyping & Hardware Development From concept → prototype → production-ready product with a strong focus on reliability and scalability. 🎥 See Real Projects & Builds YouTube: Sparklers – We Are The Makers 💬 Let’s build something innovative together. If you have an idea for an IoT device, AI system, or software platform, I can help you design, prototype, and launch it successfully.

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