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Senior embedded firmware engineer. 10+ years, 100% Job Success across 25 contracts, specializing in BLE, motor control, and industrial firmware on STM32, Nordic nRF52, ESP32, PIC, and TI MSP430. Clients hire me when the firmware decisions matter — when a wrong choice on BLE connection parameters costs weeks of battery life, when a motor control loop needs to be stable across temperature, or when an OTA update has to work on every device already in the field. Shipped products my firmware runs in: — Range React VRT — commercial shooting-sports trainer on ESP32 (see portfolio): shot detection, servo-positioned laser, BLE streaming to iOS/Android — Production BLE tire-pressure monitor on nRF52832 (nRF5 SDK/SoftDevice) — pressure + IMU over I²C, low-power BLE streaming — Commercial smart lock rebuilt from TI CC2640 onto nRF52 — BLE + NFC, plus a custom OTA/DFU host: when Nordic's DFU controller docs fell short, I reverse-engineered the protocol from live BLE logs and reimplemented it on ESP32 — STM32WB55 dual-BLDC controller — closed-loop PID with encoder feedback, live tuning over Web Bluetooth — 10-zone fire alarm panel on PIC18F/XC8 — the client still returns with new requirements every time he lands a customer — USB HID input device on PIC16F1455 — 3-switch keyboard HID (F13–F15) + rotary encoder volume/mute control for Windows (see portfolio) — Register-level i.MX RT1062 (Teensy): 8 phase-synchronized FlexPWM outputs via XBAR, no vendor SDK Beyond the above: Wi-Fi, RFID/NFC, custom GATT profiles, multi-peripheral BLE architectures, ADC tuning and sensor bring-up, interrupt-driven design, and clean firmware porting between MCU families. Currently also working in nRF Connect SDK / Zephyr. Hardware-level debugging with oscilloscope and logic analyzer — when the datasheet and reality disagree, I find out which one is lying. On one contract, the transmitter didn't actually follow its own protocol spec — the scope proved it, and I adapted the receiver to the real signal instead of the document. Most of my contracts start small and grow — my work history shows client relationships lasting 3–5 years and 200+ hours. I also work daily as an ATC automation engineer under ICAO standards — including network protocol analysis with Wireshark on live operational systems. That background shapes how I write firmware: defensive coding, fault tolerance, watchdog discipline, and the assumption that field conditions will eventually find every weakness in the design. For safety-adjacent, industrial, or always-on products, it matters. Toolchains: Keil uVision5, SEGGER Embedded Studio, STM32CubeIDE, MPLAB X, Code Composer Studio, Arduino IDE, XC8, Proteus. If you have hardware in hand and need firmware that ships correctly the first time, send me the details — happy to discuss scope before you commit. Keywords: nRF52832, nRF52840, SoftDevice, BLE GATT, Secure DFU, OTA firmware update, BLDC, PID, Teensy, i.MX RT1062, FlexPWM, PIC18F, PIC16F1455, USB HID, XC8, STM32WB55, Web Bluetooth, sensor integration, IMU, I2C, low power, logic analyzer, oscilloscope debugging, protocol analysis, Wireshark, wearable firmware, IoT firmware

✅ I’m a Top-Rated Mechatronics Engineer on Upwork with a 100% Job Success Score, over 100 five-star reviews, and a proven track record of delivering high-quality hardware solutions for global clients. I have developed products that are available in the following markets: ✅ USA. ✅ Ecuador. ✅ Lebanon. ✅ United Kingdom. ✅ Egypt. ⭐ Here's what I can bring to your project ⭐ ✅ Design and develop complete robotic systems with embedded control ✅ Create and review custom electronics circuits and PCBs ✅ Develop firmware-compatible hardware that eliminates integration issues ✅ Provide cost-efficient manufacturing strategies ✅ Deliver mechanical CAD models for enclosures and custom parts ✅ Support prototyping, production planning, and system testing ⭐ Why you should choose me over other freelancers ⭐ ✅ 24/7 ultra-reliable communication: you will always be aware of the project status ✅ Top-Rated with consistent 5⭐ feedback ✅ Deep expertise across robotics, electronics, embedded firmware, and mechanics ✅ Clear, responsive, and reliable communication ✅ Focused on quality, cost-effectiveness, and long-term success ✅ Committed to exceeding expectations and building lasting relationships 🏆 Reviews and feedback from high-profile clients 🏆 The client reviews below (also in my work history section) describe the quality of work and value that you can expect from working with me. ⭐⭐⭐⭐⭐ "The work submitted was way above par. Extremely professional and adhered to every single point we agreed upon. Youssef was very keen on communicating throughout the project and after ..." ⭐⭐⭐⭐⭐ "Working with Yousef on our locker control system project was an outstanding experience from start to finish. His dedication to finding the best solutions, rather than the quickest, set him apart. " ⭐⭐⭐⭐⭐ "This freelancer was patient with me. This freelancer made sure I understood everything when I had questions or uncertainties. I learned a lot. "

• 12+ years of experience in computer programming since 2008. • Highly skilled software development professional bringing more than 8 years in software design, development and integration for various targets including C, C++, Java and C#.Net Executes development projects from concept to delivery. • Strong experience in architecting and implementing desktop software in C# for windows operating system. • 5+ years of experience as Software Developer in software design, analysis, development, testing and implementation of web and client-server applications using Microsoft Technologies. • Hands on in application development using with C#, Web Forms in ASP.NET using C# as the codebehind language and ADO.NET and LINQ as the Database data consumer. • Extensive experience in design and development of applications using .NET and Web technologies. • Experience in IIS, XML, JSON, AJAX, CSS, DOM, HTML, HTML5, AJAX, JQuery and JavaScript. • Experience in Web Services , SOAP and ASP.NET Web API • Expertise in AngularJS controllers, directives, components, factory and service resources, routings and events. • Strong experience in XML web services, Windows services and WCF Services development in ASP.NET using C# and AJAX. • Experience using Object Oriented Programming (OOP). • Extensively understanding in creating and managing View Models, Views, and Partial Views using MVC ASP.NET. • Proficient in LINQ for data retrieval, CRUD operations, data filtering & sorting. • Good working experience with ADO.NET objects such as SQL Connection, SQL Command, Dataset, Data Reader and Data Adapter Objects in Web applications and Win form applications. • Implemented data access layer using LINQ to SQL, ADO.NET Entity and Entity Framework (EF) to access the SQL server. • Strong experience in Relational Databases, Proficient in Database programming, designing, modeling and development using MS SQL Server 2005/2008/2010/2012 and MS Access. Knowledge of implementing membership model for authentication and authorization using OAuth2 ASP.NET Identity Framework based on role security, claims-based authentication, Social Login Providers and JSON Web Token (JWT). • 4+ years of experience in development native Android applications in Java using Eclipse and Android studio. • Expertise in working on several Android SDK from API 10 (Gingerbread) till Android API 23 (Marshmallow). • Expertise in integrating WCF REST client, Web API, client, SQLite, JSON, XML, FB, Tweeter in Android applications, and working with images and camera. • Expertise to deal with android GPS, sensor axes, base sensors, and composite sensors. Proficient in interface with external sensors (cameras, temperature, humidity sensors) through Bluetooth and Wi-Fi. • 1 year of experience in iOS and macOS applications development using Swift lanaguage. • I have worked on several programming technologies such as TCP/IP, UDP, Raw Ethernet, PC peripherals (RS232, LPT, and USB), multi-media (Video & sound) in programming level, multithreading, inter-process communication, Sockets, AI, ANN, Fuzzy Logic, Voice Recognition, and FFT. • Very good experience in image processing and computer vision development in MATLAB/Simulink and in C++/C# using 3rd party libs such as OpenCV and EMGU. • 5+ years of experience implementation Matlab scripts, Simulink models and GUI applications based on various toolboxes such as Image processing, Image acquisition, Computer vision and Optimization toolboxes. • Electronics design and embedded systems using MCUs for Microchip PIC series, FPGA for Xilinx. • I use C/C++ and VHDL languages. Also I worked on recent Arduino , Netduino , and PCDuino. • Knowledge with major interface protocols such as SPI, I2C, RS232, and Ethernet 10/100 Mbps. • Experience dealing with BT, GPS, Wi-Fi, and many other modules/devices. • Electric and electronic circuit schematics design and simulation using Proteus Design Suite. • PCB design using Altium Protel DXP and Proteus Design Suite. • Source Control using GIT, GitHub, SourceTree and BitBucket. • Agile knowledge. • Excellent communication skills

As an embedded system engineer and PCB designer, I bring a unique blend of skills and experience to the table, allowing me to seamlessly integrate hardware and software solutions to create innovative embedded systems. With a solid foundation in electrical engineering and computer science, I have a deep understanding of both the hardware and software aspects of embedded systems design. My expertise spans across the entire product development lifecycle, from conceptualization and prototyping to production and testing. In the realm of hardware design, I excel in creating high-performance PCB layouts that are optimized for functionality, reliability, and manufacturability. Leveraging my proficiency in industry-standard design tools and techniques, I ensure that every PCB design meets the highest quality standards and adheres to strict design specifications. On the software side, I specialize in embedded software development, firmware programming, and device driver implementation. Whether it's coding in C/C++ or Python, I have the skills to develop efficient and robust software solutions that seamlessly integrate with the underlying hardware architecture. My track record includes successfully delivering complex embedded systems projects across various industries, including [mention specific industries or applications]. Whether it's designing embedded systems for IoT applications, automotive electronics, consumer electronics, or industrial automation, I thrive on solving challenging problems and delivering innovative solutions that exceed expectations. With a passion for technology and a commitment to excellence, I am dedicated to pushing the boundaries of embedded systems design and making a positive impact in the world through cutting-edge innovation. If you're looking for a versatile and experienced embedded system engineer and PCB designer to bring your ideas to life, I'm here to help Skills: - Embedded systems targeting (AVR, ARM, MSP430, PSoC) Architecture. - Arduino programming. - Electronic and analog circuit design. - PCB routing. - FPGA - Altium Designer, OrCAD, KICAD, DipTrace, PADS, and Eagle - Controlled impedance routing. - RF circuits. - High-speed single routing. - Schematics and footprint library creation. - Mixed single circuits design. - Rigid-flex board design. - Component sourcing. - DFM and DMA experience. - IPC design standards.

more10 years of expertise in embedded systems and IoT. My skills encompass both software and hardware aspects of embedded systems, including: Raspberry Pi, ESP32,Yun, among others. In terms of hardware, - I have knowledge and experience in PCB prototyping and production. This includes designing and manufacturing . - I have a strong understanding of digital transformation and how it applies to various industries. On the software side, - I have proficiency in developing mobile applications for both iOS and Android via React native or thunkable. - I have a diverse range of programming skills, including Node.js, PHP, HTML, CSS, C++, nodejs, Bash. - mange servers and networks, ensuring the smooth operation and connectivity of various systems. I am eager to take on creative challenges that allow me to showcase my expertise while making a meaningful impact.

Hi, I’m a passionate and results-driven Mechatronics Engineer with over 15 years of experience in industrial automation, robotics, mechanical design, and product development. My journey has taken me through diverse industries, where I’ve solved complex engineering problems, optimized production processes, and delivered innovative solutions that drive efficiency and growth. WHAT I OFFER? I specialize in end-to-end engineering solutions, from concept to production. Here’s what I can do for you: 1. INDUSTRIAL AUTOMATION & ROBOTICS 💡 PLC Programming: Expert in Siemens, Allen-Bradley, Mitsubishi (component selection, wiring, HMI design, troubleshooting). 💡 Robotics Design: Custom robotics systems, including Arduino development, sensor integration, and firmware programming. 💡 Process Optimization: Lean Six Sigma, FMEA, and 8D problem-solving to improve OEE, reduce cycle times, and eliminate waste. 2. MECHANICAL DESIGN & CAD 💡 3D Modeling & Drafting: Proficient in SolidWorks, Autodesk Inventor, Fusion 360, AutoCAD, and Siemens NX. 💡 Machine Design: Full automation systems, CNC machine design, and custom mechanical systems. 💡 Prototyping & 3D Printing: From concept to functional prototypes using SLA, FDM, and SLS methods. 💡 Reverse Engineering: Transform physical products into CAD models for improvement or replication. 3. PRODUCT DEVELOPMENT & R&D 💡 Concept to Production: Design, prototyping, testing, and validation of products across industries. 💡 Injection Mold Design: Expertise in designing molds for mass production. 💡 Research & Development: Innovate and improve products through cutting-edge technologies and methodologies. 4. EMBEDDED SYSTEMS & IoT 💡 Microcontroller Programming: Arduino, Raspberry Pi, and custom PCB design. 💡 Sensor Integration: BLE, UWB, and IoT solutions for smart devices and automation. 5. MAINTENANCE & PROCESS IMPROVEMENT 💡 Predictive Maintenance: CMMS systems, failure analysis, and countermeasures. 💡 Factory Layout Design: Lean manufacturing cells, MEP design, and electrical power distribution. 6. TECHNICAL DOCUMENTATION & WRITING 💡 User Manuals & Guides: Clear, concise documentation for assembly, operation, and maintenance. 💡 Technical Reports: Detailed analysis and reports on product performance, testing, and validation. 💡 Research Papers: Academic and technical writing for engineering publications. WHY CHOOSE ME? 🏆 Proven Track Record: Recognized with the Best Practice Award by LG Electronics for process improvement. 🛠 End-to-End Solutions: From napkin sketches to market-ready products, I handle every stage of development. 🔧 Cutting-Edge Tools: Proficient in SolidWorks, Fusion 360, MATLAB, ANSYS, and more. 🤝 Collaborative Leadership: I thrive in team environments, inspiring innovation and excellence. TECHNICAL SKILLS -> CAD/CAM: SolidWorks, Autodesk Inventor, Fusion 360, AutoCAD, Siemens NX. -> Programming: Python, C/C++, MATLAB, Arduino, PLC Ladder Logic. -> Simulation & Analysis: ANSYS, CFD, FEA, and thermal analysis. -> Manufacturing: CNC programming, injection molding, sheet metal design, and weldments. -> IoT & Embedded Systems: BLE, UWB, custom PCB design, and firmware development. LET’S COLLABORATE! Whether you need a custom automation system, a product prototype, or process optimization, I’m here to help. Let’s turn your ideas into reality and create solutions that exceed expectations. Feel free to reach out, I’d love to discuss how I can contribute to your success!