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Senior Embedded Systems Engineer | IoT Developer | Wearable Technology Specialist | PCB Design Expert Your Trusted Partner for End-to-End Embedded Solutions: Delivering Production-Ready Hardware and AI-Integrated Systems in Weeks, Not Months. With 5+ Years of Expertise and 50+ Successful Projects in Wearable Tech, Industrial IoT, and Custom PCB Design. **100% Job Success Score | Same-Day Response Guarantee ** My core expertise includes: - Custom PCB Design & Rapid Prototyping - Wearable Technology Development (Medical Devices, Fitness Trackers, Smart Textiles) - Low-Power Firmware Development (C/C++/Python) for ESP32, STM32, Raspberry Pi, nRF52840 - TinyML & Edge AI on Microcontrollers (TensorFlow Lite, Edge Impulse, Scikit-learn) - Industrial IoT & Wireless Connectivity (BLE, LoRa, Zigbee, Cellular) - Cloud Integration & Data Management (AWS IoT, Google Cloud, MQTT, REST APIs) I don't just code—I architect scalable, energy-efficient, intelligent embedded systems that drive real business value. 💡 What I Deliver: Comprehensive Full-Cycle Development ✅ 1. Wearable Technology & Medical Devices - FDA-Compliant Wearables (ECG Monitors, Fitness Trackers, Thermoelectric Coolers, Health Sensors) - Ultra-Low Power Optimization for 3x Extended Battery Life - Flexible PCB Designs for Comfortable, Durable, Wrist-Worn Devices - Biomedical Signal Processing with Real-Time Analytics and AI Integration ✅ 2. End-to-End IoT Solutions From Single-Node Sensors to Scalable Networks: - Firmware in C/C++/Python (Bare-Metal, RTOS, Linux-Based) - Secure Cloud Connectivity (AWS IoT, MQTT, WebSockets) - Custom Real-Time Dashboards for Data Visualization (Grafana, InfluxDB) ✅ 3. Custom PCB Design & Prototyping High-Performance, Manufacturable PCBs Tailored for: - Low-Power Wearables and Medical Devices - Industrial Sensor Nodes with IP67/IP68 Ratings - RF/Wireless Systems (BLE, LoRa, Cellular) Tools: Altium Designer, KiCad, Eagle, Fusion 360 Capabilities: - Multi-Layer Designs (4+ Layers) with Impedance Control - DFM/DFA Optimization for Seamless Mass Production - Rapid Prototyping via 3D Printing and CNC Milling ✅ 4. TinyML & Edge AI Deployment Machine Learning on Resource-Constrained Devices for: - Predictive Maintenance (Vibration, Thermal Anomaly Detection) - Smart Sensors (Voice Recognition, Motion Tracking, Environmental Monitoring, Biometrics) - AI-Enhanced Wearables for Real-Time Health and Fitness Analysis Tech Stack: TensorFlow Lite, PyTorch, Edge Impulse, Scikit-learn ✅ 5. Python for Embedded Systems Leveraging Python Beyond Firmware: - AI/ML Model Training & Deployment (TensorFlow, PyTorch) - Automated Testing Frameworks (PyTest, Robot Framework) - Data Analysis & Visualization (Pandas, Matplotlib) - Medical Device Validation and Clinical Testing Protocols 🚀 Proven Project Portfolio: From Concept to Market Launch 🏆 AI-Powered Sports Tracker (TinyML + ESP32) | $12,000 Budget Challenge: Accurate Real-Time Swing Analysis for Baseball Training Solution: Deployed CNN Model on ESP32 with 98% Accuracy and IR Beam Detection Integration Impact: Accelerated Product Launch by 3 Months, Boosting Client Competitiveness 🏆 Thermoelectric Wrist Cooler (Wearable Tech + PCB Design) Challenge: Efficient Cooling in Compact, Low-Power Form Factor Solution: nRF52840 MCU with Peltier Module, Custom Flexible PCB, and Thermal Management Impact: Extended Battery Life by 200%, Enabling All-Day Comfort for Users 🛠️ Technical Stack - Hardware: ESP32, Arduino, STM32 (U5/H7/F4), nRF52840, Raspberry Pi - Software: C/C++, Python (Embedded & ML), Rust - AI/ML: TensorFlow Lite, PyTorch, Edge Impulse, Scikit-learn - Cloud: AWS IoT Core, Google Cloud IoT, InfluxDB, Grafana - PCB Tools: Altium Designer, KiCad, Fusion 360, LTspice 🌟 Why Clients Choose Me for Embedded Systems, IoT, and Wearable Projects ⚡ One-Stop Solution Provider - Eliminate the Need for Multiple Specialists: I Handle Schematic Design, PCB Layout, Firmware, AI Integration, Cloud Setup, and Mobile Apps ⚡ Demonstrated Reliability - 100% On-Time Delivery Across 50+ Projects - Zero Failed Prototypes Through Rigorous Simulations and Testing - Clean, Documented Code with Git Version Control for Easy Maintenance ⚡ Exceptional Communication & Support - Same-Day Responses (Within 6 Hours) - Weekly Milestone Reviews with Video Demos and Progress Reports - Comprehensive Technical Documentation Included - 90-Day Post-Delivery Warranty with Ongoing Consultation 🔥 Ready to Bring Your Embedded Vision to Life? Schedule a FREE 30-Minute Strategy Session Today, Including: -Technical Feasibility and Risk Assessment -Customized Timeline with Milestone Deliverables -Tailored Technology Stack Recommendations -Cost-Saving Strategies and ROI Projections Available Now for New Projects—Guaranteed Working Prototype in 2-3 Weeks. 👉 Click "Invite to Job" or Message Me to Get Started!

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.

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!

I built and design the PCB, write the firmware, model the enclosure, and build the IoT app that controls it. Products I have built are live on Google Play, the App Store, and in the hands of US/EU customers right now. I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐈𝐨𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with a Master's in Embedded Systems and a Bachelor's in Computer Engineering. I take products end-to-end from PCB design, firmware, enclosure, IoT mobile app, to cloud, so you get one Partner accountable for the whole stack instead of coordinating four of them. 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬 𝐈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐈𝐧: ➙ Consumer electronics, smart home devices, connected appliances ➙ Audio and DSP products, Audio/Sound Devices, real-time processing ➙ Stepper motor, CNC Machines, 3D Printers, Stepper Motors, Driver, DC Generators, Energy Harvesting ➙ Smart RGB light control Systems, Hall Effect Systems ➙ Industrial IoT, Home automation, Modbus/CAN gateways, CAN telematics ➙ Medical devices, wearables, monitoring systems, Automotive ➙ Asset tracking, smart agriculture, LoRaWAN sensor networks 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 𝐌𝐢𝐜𝐫𝐨𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫𝐬 & 𝐒𝐨𝐂𝐬: STM32, ESP32 (S2/S3, A1S Dual-Core, ESP8266), Arduino (Nano, Mega, Mini, Pro, Uno), Nordic nRF52840/nRF5340, AVR (ATmega, ATtiny), PIC16/PIC18/PIC32, Raspberry Pi, Cortex-M0/M0+/M3/M4/M7/M33, Cortex-A53/A72/A76, Cortex-R4/R5/R52, Teensy 4.1, FPGA 𝐅𝐢𝐫𝐦𝐰𝐚𝐫𝐞: Embedded C/C++, MicroPython, ARM Assembly, Verilog/SystemVerilog, VHDL. FreeRTOS, Azure RTOS (ThreadX). Bare-metal, HAL, and LL driver development. STM32CubeIDE, ESP-IDF, PlatformIO, Arduino, CMake, GCC Arm toolchain. 𝐏𝐂𝐁 𝐃𝐞𝐬𝐢𝐠𝐧: Expertise in 2-12 layer boards, rigid & flex, and HDI designs using Altium Designer, KiCad, and Eagle, with a focus on high-speed signal integrity, impedance matching, thermal design, high-current routing, and RF layout including Pi-network antenna tuning. 𝐌𝐞𝐜𝐡𝐚𝐧𝐢𝐜𝐚𝐥/𝐄𝐧𝐜𝐥𝐨𝐬𝐮𝐫𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Proficient in SolidWorks, Fusion 360, and AutoCAD for injection-molding-ready designs, SLA/FDM 3D printing, IP65/IP67/IP68 waterproofing, and advanced thermal management. 𝐏𝐞𝐫𝐢𝐩𝐡𝐞𝐫𝐚𝐥𝐬 & 𝐁𝐮𝐬𝐞𝐬: I2C, SPI, UART, CAN (CANOpen, J1939), USB HID, PCIe, DMA, PWM, ADC/DAC, I2S/PDM audio, EEPROM/Flash. 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲: Wi-Fi, BLE 5.x, LoRa/LoRaWAN, NFC/RFID (MiFare, ISO14443), LTE-M, NB-IoT, 4G LTE, u-blox GNSS (M8/M10), RS485, RS232, Modbus RTU/TCP, Ethernet. 𝐈𝐨𝐓 & 𝐂𝐥𝐨𝐮𝐝: MQTT/MQTTS, HTTPS, WebSockets, TLS 1.3, JSON-RPC. AWS IoT Core, Azure IoT Hub, Google Cloud IoT, Blynk, ThingsBoard, Tuya. 𝐀𝐩𝐩𝐬 & 𝐈𝐧𝐭𝐞𝐫𝐟𝐚𝐜𝐞𝐬: Flutter, React Native, React.js, Vue.js, Node-RED, Firebase, PWAs. Qt for Embedded, PyQt5. OLED, TFT, IPS, E-Paper, LED Matrix, 7-Segment, rotary encoders. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Secure Boot, AES, ECC, OTA updates. Design-for-certification for CE, FCC, EMI/EMC, ESD (IEC 61000-4-2), UL, ISO 9001/13485. 𝐌𝐲 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: ➙ Clear weekly progress updates, often including demo videos, schematics, firmware commits, and simulation results. ➙ Version-controlled deliverables (Git) and meticulously documented, clean code. ➙ Transparent communication regarding progress, challenges, and potential risks. ➙ Strong research-driven approach focused on solving technically difficult problems efficiently. ➙ Open to starting with a paid pilot project before committing to a larger scope. 𝐋𝐞𝐭'𝐬 𝐓𝐚𝐥𝐤 𝐈𝐟 𝐘𝐨𝐮 𝐍𝐞𝐞𝐝 A reliable partner to design a new product from scratch, rescue a stalled hardware project, and control systems, port firmware between MCU families, add IoT/cloud connectivity to an existing device, or build the mobile app and backend that makes your hardware actually useful. Invite me to your Job or send me a message with your product concept, current stage, and what's blocking you.

✅I am a passionate, precise and results-oriented Embedded System Engineer with a focus on electronic systems with deep experience in all practical aspects of product design. I enjoy working on complex and diverse projects with different applications such as industrial, automotive, IoT, and medical sectors. ✅I have worked on projects like Autonomous Robot, Aviation Grade Projects, Gas Metering Devices, Healthcare related Devices, Industrial Grade Devices, Explosive Grade Electronics (Ex Zone, ATEX), etc. ✅Services: • Electronic/Hardware product design, including but not limited to system design, component selection, schematic drawing, PCB layout & routing, reviewing, and troubleshooting. • Prototyping, assembly and validation of boards with up to hundreds of SMD components with their tools and equipment. • Advising on project feasibility, cost estimations. • Arranging turnkey manufacturing, helping with scaling a prototype into mass manufacturing, and dealing with 3rd parties such as PCB plants, component suppliers, test laboratories, machining, and injection moulding shops. • Embedded software with C/C++, Verilog, and Firmware / Driver development. ✅In Hardware Designing I have expertise in following: • Multi-layer PCB design with up to 10 layers • Mixed signal design with high-speed interfaces such as Gigabit Ethernet, USB FS/HS, HDMI, DRAM, LVDS and others. • Analogue design with dedicated IC’s and discrete components. • Digital design with discrete logic gates, microcontrollers of any variety, and FPGA, CPLD, and System On Chip (Zynq 7010/7020) • Rendering of PCBs and assembled products for presentation purposes • Product / PCB Reverse Engineering or giving life to Obsolete Hardware ✅Hands on Experiece of Firmware development for following MCUs: • STM32 MCUs • nRF MCUs nRF52832, nRF52840, nRF9160 • Texas Instruments Wireless MCUs Sub-1 GHz and BLE • ESP32S1, ESP32S2, ESP32S3, ESP32C3 • Renesas M16/C63, Synergy S7G2 • Xilinx/Altera FPGA • Xilinx Zynq SoC • Xilinx/Altera CPLD ✅RTOS: • FreeRTOS • Zephyr • ThreadX • Micrium OS uC OS • TinyOS • RTX

I help startups, product companies, and engineering teams transform ideas into market-ready electronic products. With 10+ years of hands-on experience in embedded systems, electronics design, and industrial automation, I specialize in developing reliable, scalable, and production-ready solutions that work in the real world—not just in the lab. My expertise includes designing high-performance hardware and firmware using ESP32, STM32, Arduino, Raspberry Pi, and other embedded platforms. I have extensive experience building connected products that integrate seamlessly with cloud platforms, mobile applications, industrial equipment, and enterprise systems. Core Technical Expertise • Embedded Firmware Development (C/C++) • ESP32, STM32, Arduino, Raspberry Pi • Custom PCB Design (Altium Designer) • Schematic Capture & Hardware Architecture • Product Prototyping & Manufacturing Support • IoT Solutions (MQTT, Firebase, AWS, Cloud Integration) • UART, I2C, SPI, CAN, Modbus, RS-232, RS-485 • Industrial Automation & Control Systems • Sensor Integration & Data Acquisition • Wireless Technologies (Wi-Fi, Bluetooth, Zigbee, GSM/LTE) • Battery Management & Low-Power Design • Power Electronics & Embedded Power Systems • EMI/EMC-Aware PCB Layout & Design Validation • Hardware Debugging, Testing & Optimization What You Can Expect • Complete Product Development – Hardware, Firmware, and System Integration • Production-Ready Designs – Built with manufacturability, reliability, and scalability in mind • Strong Problem-Solving Skills – Able to diagnose and resolve complex hardware and firmware challenges • Clear Communication – Regular updates, transparent progress tracking, and professional collaboration • Long-Term Reliability – Designs focused on stability, maintainability, and real-world performance If you are looking for an engineer who can understand your requirements, take ownership of the development process, and deliver a professional, production-ready solution, I would be happy to discuss your project.