Have an electronics product idea that you want to become reality? I determine manufacturing costs, develop prototypes, and arrange for mass manufacture. Turn key for your idea - start to finish! I've already brought a dozen products from concept to mass manufacture. I take pride in providing high quality work. | Background | Expert robotics engineer with 24+ years experience: mechanical, software, electronics design, design for manufacture, and engineering finance. Mechanical engineering degree from Carnegie Mellon University. 10+ years professional experience as a robotics engineer at the US Naval Research Laboratory in Washington, DC. An additional decade experience as a professional freelance engineer. | Skills | Engineering finance (manufacturing cost estimation), PCB/circuit design, embedded firmware/software, Android/iOS apps for BLE control of microcontrollers, CAD, fuel cell control systems, off-grid solar power systems, and more. I have necessary high-level clearances for defense work. | Technical Writing | Professional robotics scientist in a previous career; 20+ scientific publications (can send link to publications upon request). Clients often hire me to write on complex engineering topics, from tutorials, articles, research into engineering companies, market research, patents, etc. keywords: ESP32, nRF52, ATmega, BLE, bluetooth, WiFi, Arduino, Zigbee, PCB design, Eagle, CAD, Fusion360, Autodesk, Zigbee, IoT, wireless, fingerprint sensor, solar power, MPPT, fuel cell, IoT, product designer, electronics engineer, prototype engineer, DFM, design for manufacturing, Flutter

Need an experienced hardware engineer who can take ownership of your electronics instead of simply completing a PCB layout? I help Startups, Engineering teams, IoT Companies, and Electronics OEM/ODM companies design and manfacture reliable, production-ready Electronics Circuit Board. My core specialization is multilayer PCB design and embedded hardware development, with hands-on experience in Embedded Systems , IoT Devices, Mixed-Signal Electronics, Industrial electronics, low-power systems, and processor/SoC modules and boards. I can work from a -Product Idea that requires end-to-end hardware development , -Complete Schematic that needs PCB layout, -An existing PCB that needs production and performanance redesign, -A System Architecture that needs to be translated into Schematics and then into PCB, What I can take care of: #Hardware Architecture and Circuit Design I can translate product requirements into practical hardware architectures, select components, define power trees, design analog and digital circuits, and develop complete schematics. #PCB Design and Layout I specialize in mixed-signal multilayer PCB layout using Altium Designer and KiCad. My designs consider signal integrity, power integrity, controlled impedance, grounding, return paths, thermal management, EMI/EMC, component placement, and Design for Manufacturing (DFM). My PCB experience includes microcontroller boards, Analog and Digital Interfaces, industrial electronics, IoT devices, USB and Ethernet/POE designs, RF-enabled products, and high-density processor/SoC boards. #Embedded Hardware I have extensive experience designing hardware around STM32, ESP32, and other 32-bit and 8-bit microcontrollers and processors. I work with interfaces and peripherals such as USB, Ethernet, SPI, I2C, UART, CAN, RS485, and wireless connectivity including Wi-Fi, Bluetooth, and LoRa. #Prototype Bring-Up and Testing I support board bring-up, debugging, hardware validation, and troubleshooting using oscilloscopes, logic analyzers, and other laboratory equipment. My understanding of both schematic design and PCB layout allows me to identify problems across the hardware stack rather than treating layout issues in isolation. #Manufacturing and Production I can take the design through fabrication and manufacturing, including BOM optimization, DFM reviews, Gerber/ODB++ generation, assembly documentation, prototype coordination, and production support. Why clients work with me: -You may have a product concept but no internal hardware engineering team. -You may already have a schematic but need an experienced PCB designer who understands the circuit behind it. -Or you may have an existing board that needs to be redesigned, optimized, or prepared for production. In each case, I work as an engineering partner rather than a low-cost PCB routing resource. I take responsibility for the engineering decisions that affect reliability, manufacturability, cost, and product performance. My experience includes 150+ engineering projects, with 50+ custom PCBs reaching production. I have also developed and supplied my own ESP32-based IoT hardware, with more than 300 units delivered to customers and deployed in the field. My strongest tools are Altium Designer and KiCad, with additional experience in EasyEDA, PADS, OrCAD, and Allegro. I typically work on projects where I can contribute meaningful engineering value rather than one-off hobby or firmware-only work. If you need a senior hardware engineer for multilayer PCB design, Embedded hardware development, STM32/ESP32 hardware, IoT electronics, Industrial electronics, or complete hardware product development, send me your schematic, block diagram, existing PCB, or requirements. I can review the starting point and help define the right engineering path.

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.

A self-driven individual with keen interest in electronics. I have 9 years of experience as a professional hardware engineer and over 20 years of experience as a hobby maker. Particularly interested in robotic motion control and integration of electronics and precision mechanics. My expertise can help you with hardware, PCB, and product design for a very competitive price. Please contact me for any additional questions. I can provied free 3D models for any electronics and enclosure integration. Experienced in: Circuit and PCB Design Product design 3D modeling and animation Design for mass production Circuit test and validation Embedded C programing (intermediate level) Electronics and mechanics integration Programs and tools: Altium Designer, Altium Cricuit Studio, Altium Circuit Maker, KiCad, Proteus, DesignSpark PCB, EasyEDA, Autodesk Fusion 360

I am an expert Hardware designer/ Researcher with more then 12 years of experience in the hardware design and research field. I have MS degree in IC design from Sungkyunkwan University South Korea. My experience includes 🖥️ Hardware Design -- Altium based PCB (upto 20 layers) design for Embedded Systems, ADCs, PMU etc -- MCU based O2 sensor board, scale board (Mass production, 500 units/year) -- Hand held Fetal Monitor system, Design to Qualification (Production 10,000 units/year) -- Patient Monitoring System, Design to Qualification (Production 10,000 units/year ) -- 6 & 32 channel EEG signal acquistion board, Concept to Prototyping ( noise less then 3uV p-p noise with electrodes) -- 24/32 bit SD ADC based analog data acquision board -- FPGA + TMS Processor based controller board design -- Simulations for parameters analysis of complex PCBs (CST) 🖥️ Verilog HDL Programming 1️⃣Glue Logic of sensors/ICs and embedded system for Xilinx and Altera FPGAs 2️⃣High speed interfaces including JESD204B, SPI, I2C, UARTs, MIL-STD-1553B etc 3️⃣IDEs including Xilinx ISE, Vivado, Quartus and ModelSim 🖥️ LabVIEW 1️⃣QMH and DQMH Architectures 2️⃣ Real time data acquisition and analysis 3️⃣ GUIs and displays 🖥️ Embedded systems 1️⃣Microchip PIC32, STM32, ESP32, nRF series 2️⃣Atmege series Microcontrollers 3️⃣TI DSPs, Arduino Framework, MPLAB X MHF v3, VS code as editor

Electrical Design | Embedded Systems | IoT | Arduino | Biomedical Devices | Circuit Simulation I'm Safee Ullah, an Electrical and Biomedical Engineer with five years of freelancing experience, currently pursuing a Master's in IT. I specialize in circuit design, embedded systems, IoT development, and biomedical technology integration. With a solid technical foundation and a results-driven approach, I deliver innovative, precise, and reliable engineering solutions tailored to your project goals.

I am an experienced Embedded Engineer with a 5-year track record at leading German companies, including Siemens. Specialized in Yocto and Embedded Linux, IoT development, proficient in device driver integration, Yocto recipe creation, and kernel customization. My expertise extends to IoT development with ESP, STM32, and NRF series, as well as implementing low-level protocols/drivers and application design with FreeRTOS and Zephyr RTOS. Embedded System & IoT Experience: -Expertise in ESP32, STM32, NRF series for embedded systems. -Product definition with C and C++ and application design in FreeRTOS and Zephyr. -Robust application development with debugging skills and Git experience for code management. -Proficient in ESP-IDF, ESP-ADF, ESP-MDF, STMCUBEIDE Frameworks, and Generic CmakeBuild system. -Experience in USB driver, Ethernet, and TCP/IP stack. -Expert in establishing target-dependent low-level protocol interfaces (USART, I2C, SPI, QUADSPI, MODBUS). -Experience in device architecture-dependent RTOS porting to custom frameworks. -Experience in IoT product development with AWS and other custom servers over MQTT and HTTP. Yocto/Embedded Linux Expertise: -Device driver integration in and out of the Yocto tree. -Proficiency in Yocto application recipe creation. -Custom meta-layer and kernel patch management for machine and driver customization through devtool. -Kernel configuration management and expertise in Yocto task creation within recipes. -Experience with U-Boot in Yocto for environment patching and customization, including network and MMC boot. -Integration of SWUpdate for efficient system updates. -Board expertise: Orange Pi Zero and STM32MP series for embedded Linux. Soft Skills: -Highly skilled in C/C++ programming languages. -Proficient in leading cross-functional teams for successful project delivery. -In-depth knowledge of the complete product development lifecycle and software maintenance through Git. Commitment to Innovation: Committed to harnessing technology for innovation and problem-solving. Let's connect and explore how we can collaborate to bring cutting-edge solutions to fruition. Check out my projects in the "Projects" section for insights into my capabilities.

AI Solutions Architect | Edge AI, IoT & Embedded Vision | Full-Stack (Mobile/Web) | 2 Patents | 23+ Years Exp. Bridging the gap between hardware, cloud, and modern AI. With over 23 years of software engineering experience and 5+ years specialized in AI, I don't just write code—I architect complete, end-to-end ecosystems. My background spans from silicon-level embedded programming at industry giants like ZiLOG and Honeywell to building cutting-edge Generative AI and Edge Computing solutions for modern startups. I specialize in "Edge AI"—bringing intelligence out of the cloud and onto devices. Whether you need a RAG system for complex data processing, a computer vision model running on an ESP32/Nvidia Jetson, or a full-stack Flutter application with voice capabilities, I deliver robust, scalable, and patent-worthy solutions. Why work with me? Deep Industry Roots: Experience with major players (Honeywell, Cricut, ZiLOG) and 2 filed patents. Full-Cycle Architect: I handle everything from PCB-level constraints and firmware to Cloud AI APIs and mobile app UIs. Agile & Reliable: Certified Scrum Master with a focus on System Engineering discipline—I deliver on time and budget. Featured Projects & Case Studies 1. Edge AI & Embedded Vision Smart IoT Vision System (ESP32-S3 & OV5640): Engineered a low-power IoT camera solution capable of on-device image capturing and processing. Handled driver integration and memory optimization for the ESP32 architecture. Edge Computing Optimization (Nvidia Jetson): Architected AI solutions utilizing Edge GPUs and NPUs. Focused on migrating heavy cloud workloads to local hardware for reduced latency and offline capability. Consumer Electronics (Honeywell & Cricut): Architected a Next-Gen DAS (DIY Awareness & Security) device integrating Amazon Echo, Z-Wave, Zigbee, and proprietary wireless protocols. Developed embedded firmware for an IoT Thermostat competing directly with Nest. Led development for Universal Remote Controls and IR Blasters. 2. Generative AI (LLMs) & RAG Systems RAG System for Insurance Processing: Designed and built a Retrieval-Augmented Generation (RAG) system to automate insurance claim analysis. The system ingests complex policy documents and provides accurate, context-aware answers to claims adjusters. Voice-First AI Agents: Resort Receptionist Agent: Developed a conversational AI voice agent to handle booking inquiries and guest services autonomously. In-Car Voice Assistant: Architected a voice-command application for automotive use, enabling hands-free booking, shopping, and travel planning while driving. Document Intelligence Engine: Led full-stack development of a tool using ChatGPT APIs to extract structured data from resumes and unstructured legal documents. 3. Full-Stack Web & Mobile Applications HealthTech Mobile Platform ("Qavach" & "E-pad"): Developed comprehensive preventive healthcare solutions for children. Features include appointment booking, prescription digitization via camera (OCR), and secure cloud storage. Built using Flutter for mobile and AWS for the backend. Digital Wellness App ("Disconnect Daily"): Created a gamified mobile application (Flutter) aimed at reducing screen time for children (ages 5-11). Worked closely with medical professionals to implement logic that promotes healthy digital habits. Commercial Security Mobile App: Built a cross-platform Flutter app for managing commercial security systems, featuring real-time alerts and device management. Technical Arsenal 🤖 Artificial Intelligence & Machine Learning Generative AI: LLM Integration (OpenAI/ChatGPT, Gemini, DeepSeek, Llama, Mistral), RAG Pipelines, AI Agents. Computer Vision: OpenCV, Object Detection, Face Recognition, On-device Vision. Edge AI: Nvidia Jetson, NPU optimization, TinyML. Frameworks: TensorFlow, PyTorch, Keras, Scikit-learn, Pandas, NumPy. 📱 Full-Stack & Mobile Mobile: Flutter (Dart), React Native, Kotlin, Swift. Web: Node.js, React.js, Next.js, Python, PHP. Databases: Google Firestore, PostgreSQL, MongoDB, MySQL 🔌 Embedded & IoT Hardware: ESP32, 8/16/32-bit Microcontrollers, Raspberry Pi. Protocols: MQTT, Z-Wave, Zigbee, BLE, Wi-Fi. Languages: C, C++, Embedded C. ☁️ Cloud & DevOps Platforms: AWS, Microsoft Azure, Google Cloud Platform (GCP). Tools: Docker, CI/CD Pipelines, Git. Certifications & Governance Patents: 2 Filed Patents (US 9743252 and US 20190221092). Process: Certified Agile Scrum Master. Governance: Expertise in AI Ethics, bias mitigation, and data privacy/security standards.

With over a decade of experience in the tech industry, both in South Korea and Silicon Valley, I’ve established a reputation for overcoming technical challenges with innovative solutions. My passion for engineering, ignited before high school, drives me to excel in both professional and personal projects. I specialize in hardware and software design, particularly in wearable and portable bio-signal instrumentation, including Brain-Imaging devices utilizing fNIRS, EEG, and Ultrasound for medical and research purposes. What I Can Offer: Project Management & Research: - Expertise in high-level project management and research with a strong foundation in hardware and firmware integration for efficient project execution. - Successfully managed and completed projects for various clients, ensuring timely delivery and high-quality results. Hardware Design: - Proficient in circuit design, component selection, electrical schematics, and PCB layout using Altium Designer. - Deliverables include comprehensive manufacturing files (Gerber files, NC drill, pick and place, assembly diagrams, 3D prints, 3D STEP models, and electrical schematics). - Experienced in analog and digital design, RF, high-speed design, and microcontrollers. - Knowledgeable in various technologies and protocols: SPI, I2C, UART, USB, CAN, RS-485, Ethernet, Bluetooth, WiFi, etc. - Designed hardware for over 20 successful projects, many of which are currently being sold in the market. - Developed wearable and portable bio-signal instrumentation for brain-imaging devices, contributing to advancements in medical and research fields. Prototyping: - Cost-effective prototype manufacturing through established relationships with manufacturers in China, Europe, and the US. - Equipped with extensive tools: multimeters, oscilloscopes, logic analyzers, vector network analyzers, USB protocol analyzers, power supplies, digital electronic loads, and soldering equipment. - Produced high-quality prototypes for clients, leading to successful product launches. Firmware Development: - Over 10 years of coding experience in C/C++ and extensive firmware development. - Proficient in ARM Cortex microcontrollers (STM32, Nordic, Ambiq Apollo), ESP32, Raspberry Pi, Arduino ARM, TI, NXP, Atmel, PIC, FPGA firmware (VHDL, Verilog), and production-quality firmware delivery. - Specialized in ST and Nordic microcontrollers for efficient and quick firmware development. - Developed firmware for a wide range of applications, including medical devices, consumer electronics, and industrial automation. AI/Machine Learning: - Expertise in computer vision and machine learning project architecture/design (Tensorflow, Keras, PyTorch). - Skilled in embedded image processing solutions (Jetson Orin, Raspberry Pi, Intel Movidius, OpenVINO). - Capable of training models for specific purposes, managing dataset collection/preparation, and deploying applications on GCP (Google Cloud Platform) with NVIDIA GPU experience. - Developed and deployed machine learning models for object detection, shape recognition, and action recognition, enhancing product functionality and user experience. Software Development: - Competent in developing software tools for debugging, testing, and manufacturing across Linux/Windows/Mac platforms. - Created user-friendly GUIs and tools to streamline development and testing processes. Wireless Technologies: - Proficient in Bluetooth and BLE-enabled devices, 2.4GHz radio transmitters, and custom analog and digital radio systems. - Developed wireless communication systems for various applications, ensuring reliable and efficient data transmission. Manufacturing Services: - Offering contract manufacturing services to deliver finished products ready for market, ensuring high quality and reliability. - Collaborated with manufacturers to optimize production processes and reduce costs. Professional Integrity: - My rates reflect my extensive experience and knowledge, and I only bill for meaningful project advancement, ensuring transparency and value for my clients. - Committed to delivering high-quality results and providing ongoing support to clients after project completion.

Working in Digital Systems Design for the last 4 years: I've written RTL for server-class RISC-V SoC components, built an Image Signal Processor pipeline that runs on FPGA, and contributed to an actual chip tape-out on SkyWater's 130nm process. I've taken designs through the full life cycle — specification, simulation, FPGA prototyping, fabrication, and silicon bring-up in the lab, where I wrote C and assembly tests to validate real hardware. Alongside design work, I also write technical articles on chip design, RISC-V, and embedded systems — so if you need documentation or engineering content that's accurate and readable, I can help with that too. Feel free to reach out or send an invitation to get started. Keywords RISC-V | Computer Architecture | RTL Design | Verilog | SystemVerilog | Chisel | Bare-Metal Firmware | Embedded C | Assembly Language | FPGA Prototyping | SoC Integration | Silicon Bring-up