Accomplished Electronics Design Engineer with 25+ years of comprehensive experience in electronic system/product development. A full-time freelancer, leveraging deep expertise across PCB design, manufacturing management, and rigorous testing/verification to deliver robust, high-performance, and manufacturable hardware from concept to production. My goal: transform your ideas into reliable, market-ready electronic products. 1 - Core Expertise & Design Services 1.1 - Analog, Digital & Mixed-Signal Design . Amplifier & Comparator Circuits: Op-amp, Differential, Instrumentation Amp, Comparator designs. . Audio & Power Amplifiers: Class A/B/AB/D (audio, power). . Data Conversion: ADC/DAC interfacing. . High-Speed & Signal Integrity: Impedance-controlled layouts for DDR (all generations), Ethernet, USB, high-speed serial. . Processor & MCU Integration: ARM (STM32, ATSAM, IMX6), AVR, PIC, 8051, MSP430, RP2040, RP2340, EZ-USB. . Wireless MCUs: Espressif (ESP32, ESP8266), Nordic (NRF51-54), TI (CC11xx, CC25xx, CC26xx). . High-Performance AI/ML Boards: Design and integration with NVIDIA Jetson Nano for edge AI. . FPGA Hardware Design: Xilinx, Altera/Intel, Actel, Microsemi FPGAs. . Platforms: Arduino, STM32 Nucleo, Raspberry Pi, TI Launchpad, BeagleBone, OrangePi. . SPICE Simulation: Advanced analysis using LTspice, Qspice, KiCad. 1.2 - Power Electronics Design . Comprehensive Power Supplies: LDO, DC/DC, AC/DC, SMPS, Battery Charging, Power Path Management, Power Factor Correction, Input Protection. . Motor Driver Design: Expertise in H-Bridge, Low Side, and High Side driver circuits for various motor control applications. 1.3 - Advanced PCB Layout & Physical Design . Multi-Layer & Space-Constrained PCB Layout: Complex, high-density designs including Rigid/Flex, buried/blind vias, HDI. . Power Delivery Networks (PDN): Robust physical design for stable power distribution. . IPC Standard Compliance: Meticulous IPC-compliant footprint/land pattern design. . EMC/EMI Suppression: Proactive design for electromagnetic compatibility. 2 - Manufacturing Management . End-to-End Manufacturing Liaison: Ensuring first-pass manufacturability. . Component Sourcing & Optimization: Strategic sourcing, equivalent part substitution, BOM management. . DFM-Ready File Generation: Complete manufacturing packages (Gerber RS274X, N.C. Drill, ODB++, 3D PDF, STEP). . Remote Production Management: Issue resolution, effective supplier communication. . 3D Visualization: Board and enclosure visualizations pre-manufacturing. 3 - Testing, Debugging & Verification Services . Comprehensive Hardware Design Verification: Schematic, layout, BOM, DFM, and manufacturing file validation. . Board-Level & Functional Testing: Board bring-up, functional testing, debugging, test reports for FPGA/MCU systems. . Custom Test Code Development: Expertise in C/C++, Python, Assembly, Verilog/HDL, Visual Basic for test automation. . Advanced In-House Electronics Lab: Equipped with lab power supplies, function generators, oscilloscopes, logic analyzers, chip programmers/debuggers, ensuring precise testing. . Specialized Test PCBs: Burn-in Boards, Probe Cards, DUT boards, ATE PCBs. Keywords: Schematic, PCB Layout, Rigid PCB, Battery Operated Electronics, Flex Pcb, Consumer Electronics, Electronic Product Design, Carrier Boards, SOM Boards, Motherboards, Add-on boards, IOT, MQTT, Edge Computing Hardware Solutions, NFC, Bluetooth, BLE, Matter, Zigbee, Thread, LoRa, LoRaWAN, GPS, GNSS, RTK GNSS, WiFi Module, 2G/3G/4G, LTE, Quectel, u-Blox, Qualcom, Home Automation, Embedded Systems, Robotics, Flight controller, Linear and Switch mode Power Supply, AC/DC Converter, Motor Drive, Energy Meter, Power Meter, RF, ESP8266, ESP32, Xilinx FPGA, STM32, CubeMx, ARM, AVR, PIC, 8051, Verilog, C/C++, altium, KiCAD, EasyEDA, Keil uVision, mplab, modelsim, multisim, ltspice, mikroc, proteus, Tasmota, ESPHome, ESPEasy, Home-Assistant, SolarAssistant, Burn-in Boards, Probe Cards, DUT boards, ATE PCBs, Custom PCB, Testing, Board Bringup, Root Cause Analysis, Troubleshooting, BOM Optimization, Supplier Selection Aid, RAKwireless WisBlock, Grove, LIDAR, JLCPCB, PCBWay, Elecrow, eurocircuits, macrofab, oshpark, aisler, fab-9

Senior Software Engineer | AI Integration & LLM Systems | AI Video Pipelines | Full-Stack & Technical Consulting I build things most developers can't — from production AI agents and LLM pipelines to real-time video processing infrastructure, WebRTC systems, and full-stack web applications. With 22+ years of hands-on engineering experience, I operate across the full stack of abstraction: from x86/ARM assembler up to React/Next.js, and everything in between — including the cutting edge of applied AI. Where I add the most value: AI Integration & LLM Systems — My current primary focus, and one of the fastest-growing needs on the market. I design and build practical AI systems that go beyond API wrappers: autonomous code agents, voice recognition pipelines, LLM integrations using LlamaCpp and HuggingFace, Retrieval-Augmented Generation (RAG) architectures, and reinforcement learning feedback loops. If you have an existing product and need AI capabilities embedded into it properly — not bolted on — this is where I thrive. AI-Powered Video Pipelines — A rare combination: deep AI knowledge paired with deep video engineering expertise. I build the infrastructure behind AI video tools — real-time processing, generation pipelines, and streaming architectures using FFmpeg (API and CLI), Media Foundation, and custom SDKs. Whether you're building an AI video editor, a live AI-enhanced stream, or a 250–360° panoramic solution, I can own the full pipeline from capture to output. WebRTC & Real-Time AI — Real-time communication systems enhanced with AI capabilities: live transcription, translation, moderation, and analysis. Proficient in WebRTC end-to-end, with the AI layer built in from the ground up rather than patched in afterward. AI Chatbot & Agent Development — Building production-grade conversational agents and autonomous systems with custom backends, memory, tool use, and real integrations — not no-code wrappers or off-the-shelf demos. Technical Leadership & Team Consulting — Sometimes the most valuable thing a project needs isn't more code — it's the right direction. I help clients assess their engineering teams, audit existing codebases, and evaluate software stacks and architectures before committing to a costly build. Whether you're choosing between competing technology approaches, need an independent expert to validate a technical decision, or require a fractional technical lead — I can step in as a trusted advisor. I also form and coordinate small teams of specialists when a project scope requires it, matching the right engineers to the right problems. Low-Level & Systems Programming — Custom HTTP servers, Nginx modules, WebSocket implementations, eBPF, ICMP and raw IP protocols, OS kernel work, and hardware device drivers. This foundation is what allows me to optimize AI inference performance and video pipelines at a level most engineers simply can't reach. Cross-Platform Native Development — 12 years with OpenGL, plus Metal, Vulkan, and DirectX across macOS, iOS, Windows, and Linux. Experienced with Raspberry Pi and embedded/specialized devices. Web & Full-Stack — 15 years of JavaScript (React, Next.js, TypeScript, Node.js, Three.js, WebGL), 10 years of PHP (Laravel, CakePHP, MySQL), and Python/FastAPI for backend services. Additional languages & tools: C# / MSSQL, Java, Python, Qt/PyQt, Perl — all with 5+ years of production use. I'm equally comfortable building an AI agent from scratch, architecting a real-time video pipeline, advising a CTO on a critical technical decision, or assembling the right team to deliver a complex product. If your project sits at the intersection of AI and real engineering — not just prompting — let's talk.

I’m Hamza Tahir, an Electronics and Embedded Systems Engineer with over 5 years of professional R&D experience, combining deep expertise in FPGA design (Verilog/VHDL), embedded firmware development, and data-driven system optimization. My career has spanned industrial innovation in both Pakistan and South Korea, where I’ve led hardware–software co-design projects that merged FPGA architecture, ARM-based processing, and real-time embedded solutions. Alongside my engineering work, I’m also an IBM-certified Data Science Professional, equipping me to bring analytical precision and data insights into hardware design and system performance evaluation. I specialize in delivering complete hardware–firmware solutions, from digital logic design to system integration and testing, while maintaining a focus on efficiency, scalability, and long-term maintainability. Core Expertise FPGA & HDL Design: Verilog/VHDL, SystemVerilog, RTL architecture, IP core development, AXI interfacing Embedded Firmware: C/C++ programming for STM32, ARM, AVR, and Raspberry Pi System Integration: ZYNQ SoC, Linux on embedded systems, GUI development with QT Creator Hardware Design & Debugging: Altium Designer, OrCAD, Proteus, PCB layout and validation Data Science & Analytics: Python, Pandas, NumPy, Data Visualization, Machine Learning (IBM Certified) Simulation & Verification: ModelSim, Vivado, Quartus, MATLAB Selected Achievements Led RTL and firmware design for IM2 (Merging Unit + IED) used in Korean train substations (ZYNQ-7000 FPGA). Developed Heterogeneous Accelerometer Test Equipment with FPGA SoC integration and real-time GUI. Designed a 5-Channel Data Logger with multi-sensor communication protocols (UART, SPI, I2C, RS422/RS232). Volunteered in the development of an industrial ventilator during COVID-19, winning 6M PKR in industrial funding. Why Work With Me 🧠 Deep Technical Expertise: I combine hands-on FPGA and embedded experience with data-driven insights. ⚙️ Full-Cycle Engineering: From design and simulation to firmware and analytics — I handle end-to-end solutions. 💬 Transparent Collaboration: Clear communication, regular updates, and documentation for every project. 🚀 Innovation-Oriented: Focused on creating efficient, reliable, and production-ready embedded systems. Whether you need a custom FPGA core, a firmware integration solution, or a data-backed system analysis, I bring precision, professionalism, and innovation to every task. Let’s connect and turn your technical vision into a tangible, high-performance reality.

As a passionate multidisciplinary Mechatronics Engineer and Certified Solidworks Professional, I have a deep knowledge in Mechanical Engineering, Electronic Design and Programming which makes me a perfect fit for a wide variety of projects such as those which have a high degree of complexity and demand expertise in non-related fields of engineering and Product Development. I have a 13+ years of professional experience bringing innovative product ideas to life and working on challenging projects in Mechanical Design, Robotics, Machine Design, Product design and development, Prototyping, 3D printing, Electrical & PCB design and Micro-controller programming. I am capable of taking your idea from sketches to an actual working prototype through detailed CAD, and manufacturing drawings making it all ready for production. This is my 13th year on Upwork and thanks to my passion and motivation, I'm always eager not only to providing the best quality services, but also committed to living the dream with you by making your project a real success !

I am an electrical and electronic engineer with a Masters in Digital signal processing at the Imperial College UK. I am currently a Ph.D. student at the City University of London UK. Some of my achievements: 1.- Author of the book "MATLAB aplicado a Telecomunicaciones" 2.- Over 5 years of experience in digital image printing systems and computer vision systems 3.- Over 10 years of experience in electronics, sensors, and data acquisition systems. I conducted the project design of a digital seismograph in 2007 sponsored by CONACYT. In 2022 I conducted a research project in turbine instrumentation with Arduino and I have now published a paper. This year 2023 I am conducting an electronic project on a smart oximeter. 5.- Researcher and Ph.D. student since 2018. Experience in Artificial intelligence systems. Currently high experience in data science and image processing methods for cancer detection and grading. 6.- I have a team of collaborators with different expertise areas: CAD, software programming, data analysis

I am an experienced Electronics Engineer with a wide range of skills specifically tailored to PCB and PCB related designs. My formal education is in Computer Engineering from the University of Illinois at Chicago where I focused my studies on system level programming, microcontroller based designs, and semiconductor physics. The majority of my career has been spent working with start-ups in a number of different industries and filling talent gaps that are beyond that of your typical electronics design engineer, which make me a valuable asset for all your electronics needs. Below are a few of my capabilities, feel free to send me a message asking about any of these skills or if there is something you don't see listed here. Keep in mind, I am new to UpWork and still working on building my profile, but that does not mean I am new to PCB design or electronics development. That is my bread and butter and something I do quite well. I hope you find what you are looking for. Thank you, and I hope to learn more about your project!   Key Points - 8 years of Electronics Engineering experience - Experience designing for commercial, automotive, and industrial sectors. - Wide range of engineering and design related skills related to electronics, electronics product design and electronics manufacturing - PCB design, 3D modeling, embedded programming, electronics manufacturing and assembly, factory automated test fixture design, embedded MCU development fixture design Skills and Capabilities **Custom PCB Design** ----------------------------- o Schematic capture and PCB layout o Embedded microcontroller o Analog circuits o Digital circuits including differential and impedance matching o Power delivery and regulation o Sensor implementation including analog transducers and MEMS o Multilayer including High Density Interconnects (HDI) o EDA usage including Altium, OrCad, and KiCad **Design for Manufacturing (DFM)** ------------------------------------------- o Component count and cost analysis o Form factor manufacturability including PCB shape and component clearance o In contact with distributor representatives for component sourcing **Testing and Troubleshooting** -------------------------------------- o Power consumption profiling o Digital and analog signal interpretation o Prototype reworking **In-House Electronics Manufacturing** ------------------------------------------------ o Framed and frameless stencil paste application for SMD o Fully automatic Pick and Place  Components size down to 0201  Top and bottom vision for 0.1mm placement accuracy  Dual nozzle pick head for component placement up to 750 CPM  Tray, cut tape, and reel compatibility  All tape sizes accepted  Single board or panel array configuration  180mm x 220mm maximum PCB or panel size o Hot air reflow  High temperature lead-free SAC305 capable  180mm x 220mm maximum PCB or panel size  Double sided PCB capable o RoHS compliant **Custom 3D modeling** ------------------------------ o Test fixtures o PCB enclosures o Potting and PCB encapsulation molds o Additions and alterations to existing designs o CAD tools including FreeCAD and Fusion360 **In-House 3D Model Prototyping** ------------------------------------------ o Benchtop CNC mill and router  Machining materials include wood, plastics (acetol, ABS, acrylic, nylon, PTFE), aluminum, copper, steel o FDM printing  Printable materials include PLA, ABS, TPU, PETG  Print volume: 220mm x 220mm x 220mm o gCode interpolation and programming knowledge **Firmware and Embedded Programming** --------------------------------------------------- o Embedded C and python o Timers, interrupts, and DMA driven applications o Digital peripheral drivers including SPI, I2C, UART, PWM, CANBus o Analog peripheral drivers including ADC, DAC, opamp, comparator o Familiar with RTOS scheduling and threaded computing o Code size optimizing and memory usage o JTAG debugging and MCU register interpretation o Text based or IDE based environments

Hello! I’m a seasoned Electrical Engineer with over two decades of hands-on experience in embedded systems, encompassing firmware/software development, electronics design, troubleshooting, and operations management. My career has been dedicated to solving complex technical challenges and driving innovation in commercial and industrial markets. What I Offer: Deep Technical Expertise: Proficient in troubleshooting intricate electronic modules at both system and component levels. Experienced with a broad range of hardware tools, including high-speed oscilloscopes, spectrum analyzers, and signal generators, as well as software tools like Altium Designer and LTspice. Broad Skill Set: Skilled in electronics design, circuit debugging, signal and power integrity analysis, and design verification. Adept in using various programming languages (Pascal, C, Python) and operating systems (DOS, Windows, Linux). Leadership and Collaboration: Proven track record in leading technical teams and collaborating across departments (Mechanical, Software, Manufacturing, Quality) to achieve project goals. Experienced in mentoring and training teams, handling technical interviews, and elevating team expertise. Problem-Solving and Innovation: Adept at addressing signal integrity problems, from low-frequency I2C to high-speed interfaces like PCIe and 10GBase-KR. Known for innovative solutions in power generation and delivery, as well as expertise in EMI and EMC issues. Notable Achievements: Successfully spearheaded the prototype hardware bring-up process at Vadatech Inc., including troubleshooting complex hardware issues and leading the documentation of engineering change orders. Defined system architectures and circuit designs at DICE Electronics LLC, including reverse-engineering IEBus protocols and developing new test equipment for signal analysis. Whether you need help with complex electronics design, troubleshooting intricate hardware issues, or managing a project, I bring a wealth of knowledge and a commitment to delivering high-quality results. Let’s work together to tackle your technical challenges and drive your projects to success! Feel free to reach out to discuss how I can contribute to your next project.

Electronic design services for all industries and products. Develop hardware, embedded firmware and PCB layouts for all types of projects. Provide value added service to companies and individuals looking to develop new products to bring their ideas to reality at a very reasonable cost. Extensive electronic design and manufacturing background to assist getting your project manufactured worldwide. Over 40 years experience in video, automotive, military, medical, aerospace, consumer, laboratory, sporting, gaming, vending, security, agricultural, law enforcement, test equipment products and other industries. Hardware designs include various sensors such as accelerometers, temperature, motion, rotary encoders, magnetic, pressure, flex, proximity, and touch. Controllers for DC motors, servos, linear actuators, and stepper motors. Communication designs and firmware for Bluetooth, USB2.0, USB3.0, LoRa, Wifi, POE, RS232, RS-485, CAN Bus and Zigbee. Design of hardware and firmware utilizing variousf 8, 16 and 32-bit microcontrollers from Microchip, Atmel, STMicroelectronics, ARM, Cypress and many others. Custom add-on boards for Arduino, STM Nucleo, Raspberry Pi and standalone custom boards from various development paltforms available. PCB layouts of all shapes, sizes and complexity. Single layer through 10 layer PCB layouts. SMT components including fine pitch package layouts, BGA, multilayer, blind, buried and micro vias. Experienced with design and layouts for RS232, Wifi, ethernet, Bluetooth, LoRa, RS-485, CAN Bus, USB2.0, and USB 3. Primary PCB software used is Eagle with experience in many others such as Altium, OrCad, PCAD, DipTrace, and KiCad. As a value added service, small volume assembly is available to get the first prototypes assembled for quick evaluation. All engineering work completed in New Jersey.

I am an enthusiastic graduate engineer and PhD Researcher. I write software for embedded systems and write articles. I will deliver the best quality of work.

I am a Software and Embedded Developer that has experience in building both consumer and startup applications. I have been involved in building applications for both consumer and commercial products. As a scientist, I guarantee to deliver only top quality products. The results are solutions that consistently meet my clients needs and exceed their expectations. I am a scientist who is experienced in unmanned air vehicles together with neural networks, machine learning and python. I made lots of projects which are unique. Some of these are; -Writing ground controller systems (GCS) for controlling, tracking and changing the usable modes of unmanned aircraft vehicle. -Aerodynamic Design and Calculations for Fixed Wing Unmanned Aerial Vehicles Which are Used in Remote Sensing Studies. -INVESTIGATION OF THE EFFECTS OF WING DESIGN ON FLIGHT TIME, MANEUVERABILITY AND VELOCITY (VSTALL) IN FIXED WING UAV -Calculated viscosity, reynolds number, thrust, lift and v stall with python for aerodynamic of the Unmanned Aircraft Vehicles. -Implementation of a script that calculates sunrise and sunset measurements for Bakırlıtepe, Saklıkent campus Technologies I work with: Hardwares: Raspberry pi, Arduino, PIC Microcontroller Languages: Python, Java, C, C#, Dart, Flutter Some Subjects Of Research And Project: --Autonomous Vehicles --Satellite Image Processing --Digital Image Processing -- Data Preprocessing --Machine Learning --Neural Networks --Neural Language Processing -- UI design with PYQT5 --Aerodynamic Calculations and Aerodynamic Design For UAV Projects. --Image Processing Tools And Technologies: OpenCV, SPENVIS, SAGA, XFLR5, ArcGIS, FreeCAD, QGis, DS9, ESRI, Linux/Unix,Anaconda, Spyder, Git Atom, Eclipse, Visual Studio,Android Studio, PyCharm