Senior Embedded Firmware & IoT Engineer | Matter Certified | 12+ Years I help companies ship production-ready IoT devices faster, with confidence, and ready for certification. With 12+ years in embedded firmware and IoT, I've delivered firmware for 10+ Matter-certified products over the past 3 years: smart locks, lighting systems, smart plugs, EV chargers, energy management devices, contact sensors, and window coverings. I know the Matter certification process end-to-end from harness testing to interoperability and I've shipped on both Matter over Thread and Matter over Wi-Fi. My work covers the full product lifecycle: hardware bring-up, custom bootloaders, RTOS firmware, OTA updates, cloud connectivity (AWS IoT, Azure IoT), and large-scale deployment. I build both end devices and IoT gateways used in real commercial products. Core Expertise: ✅ Matter over Thread & Wi-Fi end devices and gateways (RGB lights, door locks, sensors, window coverings, plugs, EV chargers) ✅ IoT Gateway design with Z-Wave, Zigbee, BLE Mesh, Matter & Thread Nordic, Espressif, Silicon Labs chipsets ✅ IoT Gateway connectivity over LTE and Wi-Fi ✅ Embedded Linux firmware with Yocto, Buildroot & OpenWrt ✅ OpenThread Border Router on ESP32 and Raspberry Pi ✅ OTA firmware — Thread, Matter, Z-Wave, BLE Mesh, Zigbee, and bare metal devices ✅ Custom bootloader design for Linux and bare metal embedded devices (U-Boot, MCUboot) ✅ Secure Boot, Flash Encryption, and TrustZone-based security ✅ Real-time OSs: FreeRTOS, Zephyr, mbed OS, CMSIS ✅ Low-power optimization — nRF52, ESP32, STM32, Silicon Labs ✅ Linux device drivers development (character, platform, SPI/I2C/UART drivers) ✅ Linux kernel porting, configuration, and BSP bring-up for custom hardware ✅ Device Tree (DTS) configuration and customization ✅ Video streaming & recording with GStreamer, AWS WebRTC ✅ Cloud connectivity AWS IoT Core and Azure IoT Core ✅ MQTT, CoAP, HTTP/HTTPS, WebSocket protocol implementation ✅ Automotive CAN — keypads, displays, touch panels, switching products (ESP32, nRF52840) ✅ Embedded GUI: Qt, LVGL, uGFX ✅ Wired protocols: UART, I2C, SPI, I2S, SDIO, USB, Ethernet ✅ Wireless protocols: BLE, BLE Mesh, Wi-Fi, Thread, Zigbee, Z-Wave, LTE-M, NB-IoT, LoRa ✅ Hardware bring-up, schematic review, and debugging with JTAG/SWD/logic analyzers ✅ CI/CD pipeline setup for embedded projects (GitHub Actions, Jenkins, west, CMake) ✅ Inter-processor communication (IPC, RPMsg, shared memory) on multi-core SoCs ✅ File systems for embedded Linux: ext4, UBIFS, JFFS2, SquashFS, overlayfs ✅ Containerization on embedded Linux — Docker, balenaOS ✅ Memory management, heap optimization, and stack profiling on constrained devices ✅ Unit testing and HIL (Hardware-in-the-Loop) testing for firmware ✅ Power management subsystems — suspend/resume, tickless idle, sleep modes ✅ Modbus RTU/TCP protocol implementation for industrial IoT applications ✅ Edge computing and local inference with TensorFlow Lite on microcontrollers Platforms: nRF52840, nRF5340, nRF9151, nRF7002, ESP32, ESP32-C3/C6/S3/H2, EFR32xG24, EFR32xG22, BG95, BG22, BGM220, STM32, Z-Wave 800, Raspberry Pi, Raspberry Pi Pico W, Beaglebone, Quectel SC20/SC206E, PIC16/18, dsPIC, TM4C123 Languages & Tools: C/C++, Python, Shell scripting · ESP-IDF, nRF Connect SDK, Simplicity Studio, STM32CubeIDE, Zephyr, MPLAB, Keil, Segger, Arduino IDE, Node-RED, GDB, Wireshark, SEGGER SystemView If you're building an IoT product and need an engineer who understands real-time constraints, wireless protocols, low-power design, and certification requirements I can help you get there.

👋 Hi, I’m a CTO of Iomico IoT development company. We have over 10+ years of experience in firmware & and electronics and over 20 years of experience in software development. We successfully completed a number of IoT projects in the aerospace, manufacturing, logistics, retail, automotive, healthcare, and consumer industries. I encourage you to learn more about Iomico in our intro presentation: 👉 cutt.ly/KXdNUcf 💥We specialize in creating advanced hardware, firmware, and software solutions for start-ups and established companies. Moreover, we have a very experienced and trustworthy development team passionate about technology and innovation. That’s why we deliver you the best project result and keep you away from any risks. 🎯 Electronics engineering: ✔️radio-electronic parts research & selection ✔️Schematics ✔️PCB design ✔️Simulations & Analysis ✔️Review of your current designs 🎯 Firmware technologies we use: ✔️C/C++, Verilog, VHDL, Qt, Python ✔️Baremetal ✔️RTOS (Zephyr, FreeRTOS, AWS RTOS, Chibios, RT-Linux). ✔️Embedded Linux (OpenWRT, uCLinux, Yocto, and stand-alone Linux applications/services/drivers) ✔️Protocols: MQTT, TCP, WebSockets, HTTS(S), FTP, UDP, HTTP, SSH, etc. ✔️Wired and Wireless Networking (BLE / Bluetooth, ZigBee/Z-Wave, UWB, Lora / LoraWAN / 6LoWPAN, RFID, NFC, Mesh Networks, Thread, MLM2M, GSM 3G / 4G /5G, LTE, NB-IOT, Wi-Fi, GPS / GNSS (Galileo, GLONASS, BeiDou), PCIe Gen2/3/4, SATA R.3.x, LVDS, SDI, 10/100/1000 Ethernet, USB up to 3.2, HDMI, MIPI-CSI, MIPI-DSI and more). ✔️Design of MCU/CPU firmware (Nordic Semi (NRF52832, NRF52840, NRF5340, NRF9160, NRF7002), Rockchip (RK3399, RK3328), NXP (i.MX8, i.MX9, Layerscape), STM (STM32H7 and others), Microchip/Atmel, Texas Instruments (Sitara AM57x series), Espressif (ESP32, ESP8266), Renesas, Cypress, Infineon, Nvidia Jetson and any others). ✔️FPGA: Lattice, Xilinx, Intel, Microchip. 🎯 Software technologies we use: ✔️Java, Kotlin, PHP, C#, JavaScript (Angular, React, VueJS, NodeJS). ✔️iOS (Swift, Objective C) and Android (Java, Kotlin) programming, AOSP, cross-platform QT, and React Native. ✔️MySQL, PostgreSQL, OracleDB, MSSQL, MangoDB, RedisDB, and other cloud relational and NoSQL databases. ✔️Messaging queue tools like RabbitMQ, Kafka. ✔️Public and private clouds: AWS, Google Cloud, Digital Ocean, OpenStack. ✔️Cloud clustering / horizontal scaling: Docker, Kubernetes. ✔️OTA: Mendor.io 🎯 Edge AI / Computer Vision: ✔️PyTorch, TensorFlow, MediaPipe, OpenCV, Deepstream ✔️Research and development solutions for “smart” edge devices 🎯OTA: Mender.io, RAUC, Esper and etc. Let me explain how everything works: 1️⃣ First of all, we sign an NDA and arrange a conf call to learn more about your project. 2️⃣ If we agree on each other’s terms, you shall make a prepayment of an amount equal to two weeks of my work on the project. This prepayment shall be used as an advance retainer for my services. 3️⃣ Then, I get down to work alone or with my iomico team, and the payments should be done biweekly. 4️⃣ Please pay attention to my hourly rate and that I work only from the Iomico agency. Furthermore, having released the code, I guarantee the support of the developed product. If you’re ready to implement your ideas (no matter how crazy they are), don't hesitate to contact me here or write to my company Partnership Manager, Michael Bychko - m.bychko@iomico.us.

Greetings! I’m Mohamed Ashfaq, an Electronics and Embedded Systems Engineer with 3+ years of experience in PCB design, firmware development, and IoT product engineering. I specialize in taking projects from concept to prototype, including schematic design, PCB layout, firmware development, PCB manufacturing, and component sourcing. I have strong hands-on expertise with ESP32, STM32, and Arduino platforms, and focus on low-power IoT systems, wireless communication, and sensor-based applications. My goal is to deliver reliable, cost-effective, and production-ready hardware solutions. 💻 Skills & Expertise: -PCB Design & Layout (KiCad, EasyEDA) -Firmware Development (ESP-IDF, STM32CubeIDE, Arduino, Zephyr, FreeRTOS) -Schematic Design (Analog & Digital Circuits) -PCB Manufacturing & Assembly (JLCPCB) -Component Sourcing & BOM Management -IoT Product Development (Wi-Fi, BLE, LoRa) -Low-Power Design, Testing & Debugging 🚀 Why Choose Me: - 3+ years of experience in embedded and PCB product development - Full-cycle capability, from PCB design to manufacturing and firmware integration - Expertise in Embedded C, RTOS, and IoT architecture - Dedicated to quality, timely delivery, and clear communication Hardware: STM32, ESP32, Arduino (ATMEGA), SPC58 microcontroller (Automative grade) Languages/ Technologies: Reverse Engineering, KiCad, easyEDA, Zephyr RTOS, FreeRTOS, STM32Cube IDE, Arduino IDE, ESP-idf Clouds: Thingboard, Thingspeak Interfaces: CAN, RS485, UART, SPI, I2C Let’s collaborate to turn your idea into a fully functional embedded product designed, built, and ready for production. 📩 Contact me today to discuss how I can support your next IoT or electronics project.

It has been around 15 YEARS for me working on mobile robots, e-VTOL UAV (drones), RF-based sensing (i.e., UWB and FMCW RADAR), IoT, and embedded systems in general. ☑In Upwork, I have helped prototype various projects on IoT and embedded systems, like: ✅ IoT Dairy Farm, ✅ IoT Breast Pump, ✅ Automatic hydroponics, ✅ Vending Machine, ✅ Mobile Robots, ✅ Biosensor ✅ Smart IoT box ✅ Smart Display (LED, LCD, addressable RGB strip) ✅ Micro/active/passive buzzers ☑I'm familiar with various hardware including: ✅ Various Arduino boards, ✅ SBCs (Raspberry Pi, Banana Pi, Latte Panda, Odroid, Onion, etc), ✅ Edge devices (Jetson Orin, Rockchip) ✅ STM32, ✅ AVR (ATMEGA, ATXMEGA), ✅ ARM Cortex, ✅ ESP32/ESP8266, ✅ Nordic nRF52 (e.g. nRF52840), CC2650 ✅ SDR/USRP, ✅ TI mmWave Radar (e.g. AWR2243, IWR6843AOP). ☑I'm fluent with various IDEs such as: ✅ ArduinoIDE, ✅PlatformIO/VSCode, ✅STM32CubeIDE, ✅Keil IDE, and programming languages like ✅C/C++, ✅Python, and ✅Matlab. ☑ My main expertise is: ✅ PCB design (high-speed, Flexible, Rigid-Flex, multi-layer) ✅ firmware programming. ☑ I'm also familiar with AWS cloud services: ✅IoT core AWS ✅S3 ✅Lambda ✅MQTT/HTTP API ✅REST API Gateway ☑ Lastly, I have done various AI/machine learning projects where I'm familiar with: ✅Keras ✅TensorFlow ✅PyTorch.

I am a senior PCB & Firmware engineer and computer scientist with over 8 years of experience in the hardware design, embedded systems development and software development for robotics and IoT applications. I have a deep expertise in PCB design, real-time firmware development (bare-metal & FreeRTOS & Zephyr RTOS etc) and Linux based firmware development. I have worked for various robotics projects such as multi-rotor and fixed-wing UAVs and mobile UGVs related to embedded systems development. And also I have rich experience in Internet of Things and worked with various projects such as medical healthcare systems for over 5 years. Furthermore, my expertise includes some software development and DevOps engineering necessary for IoT applications. 🌺 Core Skills & Expertise: 💭 Electronics & PCB Design💭 🍀 Schematics & Multi-layer PCB layout and design for high-speed, mixed-signal, power electronics and RF systems 🍀 EMC/EMI compliant designs for robotics and IoT applications 💭 Embedded Firmware Development 🍀 Bare-metal and RTOS-based firmware for ARM Cortex-M, AVR, STM32, TI, nRF52 & nRF53, Microchip MCUs and FPGAs 🍀 Firmware architecture for sensor fusion, motor control, and communication protocols (I2C, SPI, UART, CAN 2.0/CANOpen, USB, Ethernet, Bluetooth/BLE, WiFi, LoRa, LTE, RFID) 🍀 Real-time embedded C/C++ with low-level driver development and bootloader implementation 🍀 Embedded Linux with Build-Root, Yocto, OpenWRT 💭 IoT software Development & DevOps Engineering 🍀 IoT Dashboard Development using Thingsboard, Node-RED, Tago.io 🍀 IoT Backend Development using Node.js framework 🍀 IoT Architecture Design & AWS & Chirpstack & MQTT/MQTT-SN/HTTP 💭 Robotics & Autonomy 🍀 Autonomous ground/aerial robot system design (ROS/ROS2, PX4, ArduPilot) 🍀 Sensor integration (LIDAR, GPS, magnetometers, cameras) and real-time perception 💭 Tools & Technologies: 🍀 Hardware/PCB: Altium Designer, KiCAD, OrCAD, LTspice, Oscilloscopes, Logic Analyzers 🍀 Firmware/Software: C, C++, Python, Embedded Linux, FreeRTOS, STM32Cube, PlatformIO, Zephy RTOS, ESP-IDF, JavaScript, VHDL/Verilog HDL 🍀 Protocols/Interfaces: I2C, SPI, UART, CAN, RS485, USB, TCP/IP, MODBUS, Bluetooth/BLE, WiFi, LoRa, RFID, MQTT/MQTT-SN I would like to take part in much more interesting projects & jobs, advance me in a higher level and make our life more intelligent and amazing. If you have any creative & exciting & valuable projects, please contact me at any time. I will do my best and we will be in the same page. Regards, Viona

Software development isn't just my profession—it's what I've been building companies around for more than 28 years. I specialize in projects that other developers consider too difficult, too specialized, or too risky. My work spans Windows low-level programming, system internals, AI-powered applications, healthcare software, enterprise platforms, and high-performance C++ systems where architecture, reliability, scalability, and performance are critical. My expertise includes Windows internals, native Win32 development, file systems, security, performance optimization, reverse engineering, system-level debugging, and modern AI technologies including Large Language Models (LLMs), agentic AI, clinical NLP, and Retrieval-Augmented Generation (RAG). Core Expertise: • Windows Low-Level Programming & System Internals • Native Win32 Development • High-Performance C++ Software • AI Systems & LLM Applications • Clinical NLP & Healthcare AI • Enterprise Software Architecture • Performance Optimization • Reverse Engineering • Cybersecurity Professional Credentials • BBB Accredited Business • Microsoft Supplier • Member of HTCIA • Founder & CEO, Secured Globe, Inc. • Inventor with registered patents

Most AI projects don't fail because of bad models. They fail because the infrastructure around the model wasn't built for production. Fragile prototypes, unpredictable latency, cloud bills that explode at scale, no fallback when things break. That's the gap I close. I'm an AI systems engineer with 25 years of building things that have to work — embedded firmware, distributed systems, and now production AI infrastructure on AWS. I recently architected a production AI receptionist for clinics — handling appointment booking in Hindi and English over a messaging channel API, processing voice notes through a custom STT → intent classification → calendar action pipeline on AWS Lambda and DynamoDB, with sub-2s response times and no persistent server. That kind of end-to-end production constraint is what I work in. What I build: - LLM integration for environments with compliance, multilingual, or integration constraints - AWS serverless architecture for AI workloads — Lambda, DynamoDB, API Gateway, SQS - Messaging channel API pipelines for conversational AI on mobile platforms - Voice AI pipelines — custom STT/TTS architecture and platform integrations - IoT + AI systems for edge intelligence and on-device inference Where I add the most value: You have a working prototype and you're not sure it'll survive real traffic, real users, or a compliance review. Or you're hitting a wall with latency issues, language gaps, telephony quirks — and need someone who has been inside those problems. I come in, map what's actually broken, and fix it or rebuild it properly. How to start: Before committing to a full build, most engagements begin with an Architecture Audit. I review your existing system or concept, identify the failure points, and produce a concrete implementation roadmap. It's a low-risk way to find out exactly what you're dealing with before spending on a full build. If your AI system needs to work — not just demo — let's talk.

Greetings! I am Zafar. I’m an Embedded Systems Engineer with over 8 years of experience. I’ve worked on a variety of projects, including industrial products, Android app, and advanced embedded systems. I’ve completed 20 projects and am known for being creative, and skilled in my work. ✨ Why Collaborate with Me? ✨ - Versatile Expert: My skill set spans across PCB design specific to single layer, double layers o multi laye pcb using Eagle, EasyEdA, Altium, or Kicad as well as creating intricate 3D models with SolidWorks, allowing me to seamlessly integrate hardware with design. - Seasoned Programmer: With proficiency in C, Python, C++, I am equipped to handle a broad spectrum of challenges, from low-level firmware development to high-level application programming. - Microcontroller Mastery: I have extensive experience with a wide variety of microcontrollers, including Arduino, Raspberry Pi, ESP32 and STM32, ensuring optimal performance for every embedded system. - Wireless Communication Specialist: I am proficient in WiFi, BLE, WiFi Mesh, and BLE Mesh networks, utilizing modules such as ESP8266, NodeMCU, ESP32 (WiFi, BLE, and mesh capabilities). - Motor & Driver Expertise: I have hands-on experience with servo motors, DC motors, stepper motors, and a range of motor drivers, ensuring precise control in robotics and automation projects. - GSM & Modem Integration: I have integrated GSM modems into numerous IoT and communication projects, providing reliable long-distance connectivity. - Communication Protocols Expertise: I have strong experience in interfacing with different protocols, including UART, SPI, I2C, RS485, Modbus, ensuring seamless communication between devices in embedded systems and third party devices. - Database Integration: I am skilled in using databases like AWS, Firebase, and ThingSpeak for robust data storage, real-time processing, and analytics. 🌟 What You Can Expect 🌟 - Proven Reliability: I have a solid track record of delivering high-quality projects on time, with meticulous attention to detail and problem-solving capabilities. - Clear Communication: You can expect prompt, professional communication in fluent English, ensuring project clarity and smooth progress from start to finish. 🚀 Let’s Collaborate! 🚀 I’m ready to bring my extensive expertise in embedded systems, robotics, and wireless communication to help you turn your innovative ideas into reality. Whether it’s developing sophisticated IoT devices, creating customized Android applications, or designing embedded solutions, I am confident in my ability to exceed your expectations. I look forward to discussing how my background and skills align with your project needs. Let’s connect and make your vision a reality.

Innovative Mechatronics Engineer with a passion for designing cutting-edge hardware solutions. Excels in tackling complex engineering challenges with precision and creativity. I can offer: ⭐Product Development ⭐PCB Design ⭐PCB Manufacturing ⭐Fast Prototyping ⭐Hardware Integration ⭐Hardware Debugging ⭐Firmware Development ⭐Technical Documentation I'm committed to bringing your ideas to life and delivering advanced solutions that push the boundaries of technology. Let's start turning your vision into reality and create groundbreaking innovations together!

From concept, to prototype, to production. I am a generalist Electronics Engineer with a strong background in hardware engineering. I began my career in Aerospace, where I partnered with other engineering disciplines to design and build a nanosatellite for NASA. Currently, I run Dragonfly Engineering, where we offer independent engineering and consulting services. With over a decade of experience in industry, I've worked extensively with product design, schematic capture, PCB layouts, power electronics, and all of the documentation that surrounds this. My expertise spans industries like automotive, aerospace, and space systems. As the founder of Dragonfly Engineering, I offer freelance solutions including PCB design, BOM creation, part selection, LTSpice/SPICE simulation, electrical testing, and rapid prototypes - including 3D-printed enclosures and basic mechatronics/firmware (C/C++/Python). If you're looking for innovative solutions delivered with precision and efficiency, I'm ready for both remote and local quick-turnaround projects. Let's collaborate to bring your ideas to life.