Hire the Best ESP32 Freelancers
in Bangladesh

🎯 With 8+ years of experience in developing IoT and embedded systems using ESP32, ESP8266, Raspberry Pi (2/3/4/5/Pico/Pico W), Arduino, STM32, etc. | HTTP, MQTT, CoAP | AWS IoT Core, Thingsboard, Node-Red, Home Assistant, Tasmota, Blynk, etc., along with custom dashboard integration with firmware. Python, uPython, C/C++, & javascript, I help clients build smart, connected, and scalable solutions. Project and Product development tailored to their real-world needs. 🚀 Bringing Smart Ideas to Life – Reliable, Scalable, and Cost-Effective IoT Solutions Are you seeking a skilled engineer to bring your IoT idea to life as a functional, connected product? I’m a results-driven IoT & Embedded Systems Engineer with a strong foundation in microcontroller & micro-processor programming, Bearmetal driver development, sensor integration, wireless communication, and cloud connectivity. I specialize in building high-performance IoT systems with smooth communication protocols and long-term reliability. ✅ What I Can Do For You: 🔌 Custom IoT/ Firmware development using Arduino, ESP32, Raspberry Pi, and STM32 🛠️ Custom Product Development: I have the whole solution from scratch to product deployment. 📡 Wireless protocols: MQTT, HTTP/HTTPS, WebSocket, BLE, Esp-Now, LoRa, Zigbee, etc. ⚙️ Device protocols: UART, SPI, I2C, I2S, Modbus, CANbus, Baremetal driver development, etc. 🌐 Dashboard Integration: ThingsBoard, Blynk, Firebase, Node-RED, Home Assistant, Tasmota, ESP Rainmaker, etc. 🔧 Embedded Sensor/Actuator interfacing for automation & control 🔁 OTA firmware updates, watchdog timers, and power-saving modes 🧰 Troubleshooting, optimization, and clean modular/OOP-based C/C++, Python firmware. 🛠️ Tools, Technologies & Expertise 📟 Microcontrollers & Boards ESP32, ESP8266 (NodeMCU, WROOM, WROVER) Arduino (Nano, Uno, Mega, Pro Mini, MKR1000) Raspberry Pi (2, 3, 4, 5, Pico, Pico W, Compute Modules) STM32 (Bluepill, STM32F103, STM32CubeMX/HAL) BeagleBone Black, Orange Pi, Banana Pi ATmega328P, ATTiny85, NRF52, RP2040, CH32V, PIC 💻 Programming Languages C, C++, Embedded C (bare-metal, HAL/LL) MicroPython, Python (asyncio, machine) JavaScript (Node.js for IoT, WebSocket) Shell scripting (Bash) for Linux automation JSON, YAML, INI (config formats for IoT) 📡 Communication Protocols # MQTT (public & secured brokers) # HTTP, HTTPS, WebSocket, CoAP # ESP-NOW, BLE, LoRa (RA-02, RYLR), Zigbee (CC2530, ZBBridge) # GSM/GPRS, SIM800L, NB-IoT (BG95, SIM7020), Wi-Fi # RS-232, RS-485, CANbus, Modbus RTU/TCP 🔌 Device/Peripheral Protocols # UART, SPI, I2C, I2S, OneWire, PWM, ADC, DAC # SD Card (FATFS), EEPROM/Flash handling # GPIO interrupt handling, timer/counter config # Bare-metal driver development and peripheral abstraction 🧰 Development Tools & IDEs # Arduino IDE, PlatformIO, STM32CubeIDE, ESP-IDF, VS Code, Thonny, Geany, etc. # Linux (Ubuntu/Raspberry Pi OS/Debian) CLI Tools # Git, GitHub/GitLab, Version Control for Embedded # Serial Monitors (PuTTY, TeraTerm, minicom), Logic Analyzers (Sigrok) ☁️ Cloud Platforms & Integrations # AWS IoT Core (MQTT, Shadow, Rules Engine) # ThingsBoard (CE/PE), Blynk (legacy and new), Firebase Realtime/Firestore # Node-RED (on-prem or cloud), Home Assistant (ESPHome, MQTT) # Tasmota customization (Rules, MQTT, Templates) # ESP RainMaker, Google Firebase, Azure IoT Hub 📊 Dashboards & Custom UIs # Web dashboards with HTML/CSS/JS # REST API consumption and creation. # Local dashboards using Node-RED, Grafana, InfluxDB, etc. 🔐 Security & Optimization #TLS/SSL for MQTT & HTTP # Data encryption (AES, base64, JWTs) # Memory and power optimization for low-power devices (deep sleep, watchdogs) # Fail-safe firmware design with bootloader, rollback 📦 Product Development & Hardware Integration # PCB interfacing and prototyping (breadboard to custom PCB) # Sensor calibration (temperature, humidity, motion, distance, gas, etc.) # Relay, triac, motor, servo, LED matrix, and display (OLED, LCD I2C, TFT) # Custom device firmware from scratch to OTA-ready product 🌟 Why Choose Me: 🧠 Expertise You Can Trust – Solid engineering principles and deep technical know-how 📈 Results-Driven Development – Focused on delivering working, scalable solutions ⏱️ Timely Delivery – Respect for your deadlines and project milestones 📣 Clear & Professional Communication – Regular updates, detailed reports, and zero guesswork 🔁 Post-Delivery Support – Guidance, maintenance, and iteration support available 💯 Client Satisfaction is My Top Priority 💼 Availability: 📅 Available for full-time, part-time, and long-term projects 🌍 Comfortable with clients worldwide and flexible with time zones 🤝 Long-term support, NDA-friendly, and confidential work welcomed 🚀 Let’s build something smart together – Message me today! SHAMIM HASAN Embedded Software Engineer

Goal-driven hard worker, responsible and 3 years+ experience in PCB design, analog and mixed signal design, High-speed design. Skilled in the Internet of Things (IoT), hardware concept prototyping, embedded systems, and robotics.

Hi, I started my career on Electronics since 2006. Done many successful projects that includes various kinds of Micro Controllers Programming, PCB Design & Product Implementations. From 2014 I am implementing my knowledge in Industrial field. I can implement my experience and knowledge to every kind of electronics available now a days.

Experienced Embedded Systems & IoT Engineer Hi there! I’m a passionate Embedded Systems and IoT Developer with over 4 years of experience bringing hardware ideas to life. I specialize in building end-to-end solutions using micro controllers like Arduino, ESP32, and ESP8266 and I’m deeply involved in everything from firmware development to custom PCB design. I’ve spent years working with a wide range of technologies to create seamless user experiences: Interfaces & Displays: Designing intuitive controls using OLED, TFT, Nextion, and Matrix displays. Connectivity: Integrating GSM, GPS, Wi-Fi, and Bluetooth for smart, connected devices. Cloud & Backend: Building real-time monitoring systems using Firebase, MQTT, Blynk, and MySQL/PHP. Prototyping: Utilizing Wokwi and Tinkercad to ensure designs are flawless before they hit the bench. What I bring to your project: I don’t just provide code; I deliver a complete, functional package. You’ll receive clean C/C++ or .ino source code, detailed circuit diagrams, and simulation files where applicable. Most importantly, I provide the expert advice needed to ensure your project is reliable and scalable. I’m a firm believer in "measure twice, cut once," so please feel free to contact with me. I’d love to discuss your vision for free and make sure we’re the perfect fit for a successful collaboration! Looking forward to building something amazing with you.

I'm immersed in the world of embedded systems, particularly in the realm of IoT-based digital device development. Over the past 4 years, I've been diving deep into the intricacies of designing and implementing these devices. My focus extends to areas like PCB design using (Altium ,kicad,Esay EDA), 3D modeling for physical components using (Solidworks), firmware development using (Keil uvision,Cube ide, Cube MX, and Arduino), and even delving into the realm of PLCs. It's an exciting journey, exploring the convergence of technology and creativity in this ever-evolving landscape.

Firmware is where most IoT projects stall — not at the concept stage, but in the gap between a working prototype and a device that runs reliably in the field for years. That gap is where I work. I build production-grade embedded firmware for consumer IoT and utility management devices. My focus is reliability, low power, and owning the full firmware stack: from peripheral drivers and RTOS architecture through to OTA update pipelines and cloud integration. With 8+ years of experience across the full development cycle, I'm comfortable taking a project from board bring-up to field deployment, or stepping in as a senior contributor on an existing team. CORE SKILLS: Platforms: Nordic nRF52, ESP32, STM32 RTOS: Zephyr, FreeRTOS Wireless: LoRaWAN (AWS, TTN, Senet), LTE-M (Quectel), WiFi, BLE Protocols: MQTT, Modbus, HTTP, mbedTLS, TCP/IP OTA & Bootloader: MCUboot, FOTA Power Profiling: Joulescope, nRF PPK-II Cloud: AWS IoT Core, The Things Network Debugging: Oscilloscope, Logic Analyzer (Saleae), Analog Discovery 3, Spectrum Analyzer Other: LVGL GUI, I2C, SPI, UART, DMA, I2S, ADC/DAC If you're building a device that needs to run reliably in the field for years — let's talk.