Hire the Best Zigbee Professionals

I am an Electrical/Embedded Firmware Engineer with 9 years of experience specializing in developing robust firmware solutions. My work encompasses a wide range of projects, where I have successfully contributed to enhancing product features and functionality. I excel in problem-solving and practical thinking, always aiming to deliver high-quality results that align with client objectives. My expertise spans various industries, allowing me to adapt quickly and bring a fresh perspective to every project. If you are looking for a skilled engineer who can translate complex requirements into effective firmware solutions, let's connect and discuss how I can add value to your team.

Proven Embedded Systems Engineer with 4+ years in IoT and firmware development. Expert in ESP32, STM32, nRF, FreeRTOS, Zephyr. I am an enthusiastic and detail-oriented Embedded Systems & IoT Developer with hands-on experience in building low-power, real-time, and connected embedded products. I specialize in ESP32, STM32, nRF9160/nRF52, and have worked extensively with FreeRTOS, Zephyr RTOS, ESP-IDF, and embedded C/C++. My work includes designing and optimizing firmware for 𝗜𝗼𝗧 𝗱𝗲𝘃𝗶𝗰𝗲𝘀, 𝘀𝗲𝗻𝘀𝗼𝗿-𝗯𝗮𝘀𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝗟𝗧𝗘/𝗚𝗡𝗦𝗦 𝘁𝗿𝗮𝗰𝗸𝗲𝗿𝘀, 𝗕𝗟𝗘 𝘀𝗰𝗮𝗻𝗻𝗲𝗿𝘀, 𝘄𝗶𝗿𝗲𝗹𝗲𝘀𝘀 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗺𝗼𝗱𝘂𝗹𝗲𝘀, and 𝗶𝗻𝘁𝗲𝗿𝗿𝘂𝗽𝘁-𝗱𝗿𝗶𝘃𝗲𝗻 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀. I have developed full embedded solutions involving 𝗽𝗲𝗿𝗶𝗽𝗵𝗲𝗿𝗮𝗹 𝗶𝗻𝘁𝗲𝗿𝗳𝗮𝗰𝗶𝗻𝗴, 𝗨𝗟𝗣 𝗮𝗻𝗱 𝗱𝗲𝗲𝗽-𝘀𝗹𝗲𝗲𝗽 𝗽𝗼𝘄𝗲𝗿 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻, 𝗠𝗤𝗧𝗧/𝗛𝗧𝗧𝗣 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻, 𝗰𝗹𝗼𝘂𝗱-𝗰𝗼𝗻𝗻𝗲𝗰𝘁𝗲𝗱 𝗱𝗲𝘃𝗶𝗰𝗲𝘀, and custom protocol handling. 𝐖𝐡𝐚𝐭 𝐲𝐨𝐮 𝐜𝐚𝐧 𝐞𝐱𝐩𝐞𝐜𝐭 𝐟𝐫𝐨𝐦 𝐦𝐞: ✔ Clean, optimized, and well-structured firmware ✔ RTOS-based application development (tasks, queues, timers, interrupts) ✔ Professional communication and timely delivery ✔ IoT connectivity development ---------------------------------------------------------- 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ---------------------------------------------------------- • Microcontrollers: 𝐄𝐒𝐏𝟑𝟐, 𝐒𝐓𝐌𝟑𝟐 (𝐒𝐓𝐌𝟑𝟐𝐋𝟒/𝐒𝐓𝐌𝟑𝟐𝐅𝟒), 𝐧𝐑𝐅𝟗𝟏𝟔𝟎, 𝐧𝐑𝐅𝟓𝟐 • Protocols: 𝐌𝐐𝐓𝐓, 𝐁𝐋𝐄, 𝐖𝐢-𝐅𝐢, 𝐋𝐓𝐄-𝐌/𝐍𝐁-𝐈𝐨𝐓, 𝐇𝐓𝐓𝐏, 𝐆𝐍𝐒𝐒, 𝐄𝐭𝐡𝐞𝐫𝐧𝐞𝐭 • Tools/SDKs: 𝐄𝐒𝐏-𝐈𝐃𝐅, 𝐒𝐓𝐌𝟑𝟐𝐂𝐮𝐛𝐞𝐈𝐃𝐄, 𝐙𝐞𝐩𝐡𝐲𝐫 𝐑𝐓𝐎𝐒, 𝐅𝐫𝐞𝐞𝐑𝐓𝐎𝐒, 𝐀𝐫𝐝𝐮𝐢𝐧𝐨 𝐈𝐃𝐄 • Build Systems: 𝐂𝐌𝐚𝐤𝐞, 𝐌𝐚𝐤𝐞𝐟𝐢𝐥𝐞 • Peripherals: 𝐔𝐀𝐑𝐓, 𝐒𝐏𝐈, 𝐈𝟐𝐂, 𝐂𝐀𝐍, 𝐑𝐒𝟐𝟑𝟐 • Languages: 𝐂, 𝐂++, 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐂, 𝐂#, 𝐏𝐲𝐭𝐡𝐨𝐧 If you're looking for a dependable Embedded Firmware Engineer who can turn your hardware into a robust, efficient, and production-ready embedded product — I’m here to help. Let’s work together and turn your ideas into Reality!

I'm Shoaib Siddique, an electronics engineer and full-stack systems developer with over 9 years of experience in embedded systems, IoT product development, and cloud-integrated software solutions. I specialize in building intelligent hardware prototypes and complete IoT ecosystems—from PCB design and firmware to Python-based dashboards and backend APIs. Whether you're a startup building a new product or an enterprise needing robust automation or monitoring solutions, I can help bring your concept to life. Core Capabilities: - PCB Design & Circuit Simulation (Altium, KiCAD) - Embedded Systems (ESP32, STM32, Arduino, Raspberry Pi) - Communication Protocols (RS485, UART, SPI, LoRa, BLE, DALI) - Cloud-Based IoT (AWS/GCP, MQTT, REST APIs) - Firmware Development (C, C++, Micropython) - Python Desktop & Web Apps (Tkinter, Streamlit, Flask) - Remote Troubleshooting, Testing & Prototyping (own lab) Let’s build innovative, scalable, and cost-efficient solutions that blend electronics with intelligent software. Available for consultations, long-term collaboration, or rapid prototyping.

I’m Hamza a Biomedical Engineer with a passion for Embedded Systems, IoT, Electronics, and Robotics. I turn ideas into real, working prototypes and products. Whether it’s designing smart devices, building automation systems, or creating medical technology, I bring innovation to life. What I Do Best: Embedded Systems & IoT Experience with ESP32, NRF52, ATMEL, STM32, PSOC, PIC Work with Raspberry Pi, VisionFive (Linux Board), and Unihiker Programming Proficient in C/C++, Python, Java, MATLAB, JavaScript, and Flutter Connectivity & Communication Skilled in UART, I2C, SPI, MQTT, BLE, BLE Mesh, Sigfox, and Wi-Fi Hardware Design & Prototyping Specialize in PCB Design, 3D Modeling, and Product Prototyping GUI Development Develop Touchscreen Interfaces, E-Paper & TFT Displays, Web Dashboards, and Desktop Applications Work with LVGL, Tkinter, PyQt, and Kivy Framework IoT & Cloud Integration Experienced with AWS IoT, Firebase, ThingsBoard, and WebSocket-based real-time control Industrial IoT (IIoT) Expertise in CAN Communication, Factory Automation, and Smart Sensor Networks Remote Monitoring & OTA Updates Work with ESP-IDF OTA, BLE DFU, and Cloud-Based Device Management I’ve built industrial prototypes, smart sensors, automation systems, and medical devices, real-time data processing and device connectivity. If you need a reliable, high-quality solution, let’s make it happen! Let’s Collaborate!

You have an IoT idea, a half-built prototype, or a device that needs to talk to a cloud backend and mobile app. That is exactly what I build end-to-end. I am a Full-Stack IoT Engineer with 5+ years of experience delivering complete embedded systems products: ESP32 firmware, MQTT broker integration, AWS IoT Core cloud backend, Node.js REST APIs, Flutter mobile apps with BLE and OTA update support, and real-time dashboards for device monitoring and control. Currently engineering IoT products for Bluell AB (Sweden). Top Rated on Upwork with 95% Job Success across 39 projects. What I deliver on every project: - ESP32 firmware: sensor integration, BLE communication, Wi-Fi, low-power optimization, OTA updates - Backend: Node.js + Express REST API, MQTT broker, AWS IoT Core, PostgreSQL, MongoDB - Mobile App: Flutter cross-platform app with real-time IoT controls, BLE device pairing, push notifications - Dashboard: real-time data visualization, device monitoring, remote control - Deployment: AWS EC2, VPS, cloud infrastructure setup Industries I work in: Industrial IoT, Smart Home Automation, Healthcare IoT wearables, Connected Devices, Remote Monitoring Systems, SaaS IoT platforms. If your IoT project needs firmware that runs reliably in the field, a backend that handles your data securely, and a mobile app your users can actually operate message me. I respond within 4 hours.

Top 5% Talent on Upwork | Embedded & Hardware Engineer | 100% Job Success | 10+ Projects Delivered | 5+ Years of Experience Are you looking for an experienced Embedded Systems & Hardware Engineer who can transform your idea into a fully working smart device? You’re in the right place. I specialize in designing and developing complete IoT products — from schematic + PCB design, to firmware programming, to wireless communication integration, testing, debugging, and final prototype support. Whether you're building a: ✔ Smart Home Device ✔ Wearable Product ✔ Industrial Sensor Node ✔ BLE Tracker ✔ WiFi Enabled Controller ✔ Battery Powered Embedded System ✔ Custom Wireless PCB Product ◆ Core Expertise ▸ Embedded Systems & Electronics ✓ Microcontrollers: STM32, ESP32/ESP8266, nRF52 ✓ Ultra-Low Power Design: sub-µA standby, long-life battery systems ✓ PCB Design: multi-layer, high-density, signal integrity optimized ✓ Embedded Firmware: UART, SPI, I2C, real-time systems ✓ Wireless: BLE, WiFi, LoRa, MQTT ✓ Motor Control: PID, stepper/servo systems ▸ System Development ✓ Hardware + Firmware integration ✓ Debugging & production validation ✓ Power profiling & optimization ✓ OTA, bootloaders, custom protocols ◆ Tools & Technologies ▸ Firmware: C, C++, Python, FreeRTOS ▸ Hardware: KiCad, Altium, JTAG, Oscilloscope ▸ Communication: UART, SPI, I2C, RS485, Modbus ▸ IoT: BLE, WiFi, LoRa, MQTT ◆ Why Work With Me ✓ Ultra-low power specialist (battery-operated systems) ✓ Full-stack embedded (hardware + firmware) ✓ Production-ready design focus ✓ Clear communication & reliable delivery ✓ Post-project support I can help you engineer it professionally, efficiently, and production-ready. I can help connect your hardware seamlessly to mobile apps, gateways, or cloud platforms.