With over 15 years of experience in design, innovation, and numerical modelling and a PhD in mechanical engineering, I specialize in moving early concepts to market-ready products. On Upwork alone, I’ve earned over $100,000 delivering high-impact solutions to global clients. My work spans CAD, CFD, FEA, ray-tracing and thermal modelling, using fully licensed software tools such as ANSYS, SolidWorks, and Zemax, and integrating software development for custom, data-driven engineering solutions. My experience includes leading roles as a Lead Mechanical Engineer and Design & Simulation Manager, where I have guided cross-functional teams and overseen complex projects from start to finish. I support clients across industries, startups to established companies, by providing precise, high-quality designs and simulations that address the technical demands of modern engineering. Some highlights of my career include: • Patents: Inventor of three patents in advanced engineering applications, focused on practical, innovative solutions. • Publications: Author of 18 technical papers in industry-leading journals, contributing to advancements in engineering methodology. Why Choose Me? • Comprehensive Expertise: From structural, fluid, thermal and optical modelling to tailored software solutions, I manage all facets of product development for optimal performance and reliability. • Licensed Software: I work exclusively with licensed, industry-standard tools, delivering results that are both reliable and scalable. • Client Focused: Known for efficiency, collaborative communication, and technical rigor, I hold a 5-star rating across all projects, recognized by my Top Rated Plus status on Upwork. Throughout my career, I’ve delivered design and simulation solutions that have helped clients launch successful products, managed diverse teams in complex development projects, and earned recognition as a Top Rated Plus freelancer, placing me in the top 3% of talent on Upwork. To explore how I can support your project goals, click “invite to job” at the top of the page and send a brief message. I look forward to collaborating with you.

✅ Responds within 10 to 15 minutes ✅ Among the Top 3% of Upwork Freelancers with consistent 5-star ratings ✅ 30+ production systems shipped using ESP32, STM32, nRF52, Yocto, Zephyr RTOS, Linux Kernel, including ISO 26262 safety-critical projects 8+ years building production-grade C/C++ firmware for several Embedded Systems, IoT devices, and industrial systems. from first prototype through certification and manufacturing. ── WHO I WORK WITH ── Whether you're a startup bringing a hardware product to market, an OEM needing automotive-grade embedded software, or an IoT company scaling a connected device. I deliver clean, testable firmware that passes certification and works in the field. ── WHAT I DELIVER ── ✅ Rapid prototyping: from concept to working proof-of-concept in weeks, not months ✅ Production firmware for automotive systems: AUTOSAR (Classic & Adaptive), CAN/J1939, LIN, ISO 26262 functional safety ✅ IoT device firmware: ESP32, BLE, WiFi, MQTT, OTA updates, sensor integration, low-power design ✅ HMI/display development: Qt/QML touchscreen interfaces on embedded Linux platforms ✅ RTOS-based systems: Zephyr, FreeRTOS, bare-metal, real-time performance on ARM Cortex-M and embedded Linux ✅ Documentation & standards: SRS, SAD, ICD, MISRA-C, traceability for safety-critical projects ── CORE TECHNICAL STACK ── Languages: C, Embedded C, C++17, Python MCU/Platforms: ESP32, STM32, ARM Cortex-M, Raspberry Pi, Infineon AURIX, Nordic nRF RTOS & OS: Zephyr, FreeRTOS, Embedded Linux, QNX Protocols: CAN, J1939, LIN, UART, SPI, I2C, BLE, WiFi, MQTT Standards: AUTOSAR Classic & Adaptive, ISO 26262, MISRA-C Tools: Git, CMake, STM32CubeIDE, ESP-IDF, PlatformIO, MATLAB/Simulink, Qt/QML ── HOW I WORK ── You'll get regular progress updates, clear documentation, and no surprises. I scope honestly, flag risks early, and deliver tested, production-ready code. I'm available for overlap with US, EU, and MENA teams. ── LET'S TALK ── Send me a message with your project brief and timeline. I'll respond within a few hours with an honest assessment of whether I'm the right fit and if I'm not, I'll tell you that too.

Experienced Integrated Circuit Design, specializing as an IC Designer. With experience in 6 IC tape-outs and multiple designs utilizing technologies such as 28nm, 45nm, 65 nm, 110 nm, and 180 nm, my expertise lies in designing and simulating Analog ICs (Schematic to GDSII), Digital ICs (RTL to GDSII), and Mixed-signal integrated circuits (SoC). Proficient in tools like Cadence Virtuoso, Mentor Graphics Calibre, Cadence Genus, Encounter/Innovus, DC compiler, VCS, Xilinx, Vivado, Modelsim, Matlab, and OpenSource ASIC design tools like "Openlane." Eagerly awaiting your response. Thank you.

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!

I am a PhD Researcher and Electrical Engineer specializing in Solar PV system design, PVSyst reports, AutoCAD Electrical drawings, and technical research writing, with 12+ years of professional experience. I have successfully completed 200+ projects in solar PV design, electrical systems, and engineering research for local and international clients. 🔹 Solar PV Design Services - Solar PV system design (Residential, Commercial & Utility-scale) - PVSyst reports and Helioscope Report - SketchUp Design - PV layout design & string sizing - Single Line Diagrams (SLD) - Shading analysis & energy yield estimation - Performance Ratio (PR) analysis - Solar feasibility studies 🔹 Electrical Drawings (AutoCAD) - AutoCAD Electrical drawings - Multi-storey building electrical design - Lighting, power, load calculations & earthing - Low-voltage systems (CCTV, fire alarm, lighting) 🔹 Research & Technical Writing - PhD-level research support - Technical reports & feasibility studies - Research Articles - Journal and Conference articles - Electrical & renewable energy research articles - Data analysis and result interpretation 🔹 Certifications - Solar Energy Systems Design – University at Buffalo (SUNY), USA - Electrical & Solar Systems Design – University at Buffalo - Energy Audit – Schneider Electric University - Professional Electrical Engineer – PEC 🔹 Software Expertise AutoCAD Electrical | PVSyst | Helioscope | DIALux | HOMER Pro | HOMER Grid | PVGIS | OpenSolar | SAM | ETAP | DIgSILENT PowerFactory | MATLAB | Python 🔹 Why Choose Me? ✔ PhD-level technical accuracy ✔ Utility-approved & bankable PVSyst reports ✔ Permit-ready AutoCAD Electrical drawings ✔ Clear communication & fast delivery If you are looking for a PhD Researcher, Solar PV Designer, or AutoCAD Electrical Expert, feel free to contact me. I am ready to support your project from concept to completion. Regards, Engr. Mohsin Atta PhD Researcher | Solar PV Designer | Electrical Drawings (AutoCAD)

I am a Mechatronics Engineer with 3 years of experience in web and mobile application development and DevOps. Mechatronics/Robotics: Robot mechanical design, FK/RK, Arduino, ESP32, RaspberyPi, OrangePi, PCB and circuit design, Proteus, Circuit Maker, 3D Modelling and Simulation, IoT, Image processing, SolidWorks, Fusion, Matlab, Control Systems, Sensors, PLC, HMI, SCADA, and much more. Web & Mobile Technologies: Expo/React Native, React, Typescript, Node.js, Python, Electron, NextJS, Docker, Docker Compose, Nginx, Caddy, Amazon Web Services (EC2, Lambda, S3 Bucket, etc.), Encryption & Security, Remotion, Framer Motion, SQL/Postgresql, Automation, and AI powered features.

Schedule a Free 30-Minute Consultation I'm a Top Rated Plus Embedded Systems Engineer with 17+ years of experience developing firmware, IoT solutions, and production-ready hardware. I help startups and companies transform ideas into working products—from concept and prototyping to manufacturing. Embedded Firmware Development ► ESP32 (WiFi, BLE, ESP32-CAM) ► STM32, Arduino, Raspberry Pi ► C/C++, Python, MicroPython ► OTA/FOTA Updates & Bootloaders ► MQTT, HTTP/HTTPS, TCP/IP ► LoRa (SX12xx), GSM (SIM800, M95, BG95) Communication Protocols ► UART, SPI, I2C ► CAN, LIN, RS485 ► 1-Wire and custom protocols Hardware & PCB Design ► EasyEDA, Eagle, Proteus ► Single, Double, and Multi-layer PCB Design ► RF, WiFi, GSM, LTE Modules ► PCB Antenna Design ► Manufacturing & Component Sourcing Support What You Can Expect ✔ Clean, maintainable code ✔ Production-ready designs ✔ Strong communication ✔ Reliable project delivery ✔ Long-term support Whether you need a prototype, firmware development, PCB design, troubleshooting, or a complete IoT product, I'd be happy to help. Send me a message and let's discuss your project.

Highly skilled and experienced English-Arabic translator with over three years of experience in translating various contents including literary, research, technical, scientific, financial, educational, and commercial materials. Fluent in English and native Arabic speaker. Able to transfer style, tone and cultural elements accurately from source to target language.

I am a Ph.D. Electrical Engineer specialized in Electromagnetic Design, Electric Machines, and Advanced FEA Simulation using ANSYS Maxwell. I have more than 10 years of experience in designing, analyzing, and optimizing electric motors, generators, actuators, magnetic gearboxes, and electromagnetic systems for industrial and research applications. I worked with international clients across the US and Europe on high-level R&D projects involving PMSMs, BLDC motors, induction machines, magnetic devices, and fault-tolerant machine design. My expertise includes electromagnetic analysis, torque optimization, cogging torque reduction, thermal-aware design, parameter extraction, and performance evaluation. I am highly experienced in: • ANSYS Maxwell (2D & 3D) • Electric Motor Design (PMSM, BLDC, IPMSM, Induction Motors) • Magnetic Gearbox & Actuator Design • MATLAB/Simulink Modeling • FEA Validation & Optimization • Winding Design & Inductance Calculation • Torque Ripple Mitigation • Advanced Control Strategies (MTPA, Fault-Tolerant Control)

I'm a full time optical design consultant with more than 14 years of experience. Most of my past and current projects are utilizing lasers, but imaging optics, spectroscopy and illumination design are often a topic too. Examples of laser projects: laser cutting, 3D printing metal and resin, laser illumination, micromachining, LIDAR, laser welding, laser scanning, laser beam shaping, laser cleaning, Bessel beams, OCT, nonlinear microscopy, fiber DPSS and gas lasers .. and a lot more. In addition to lasers I worked on a wide range of projects including design of Imaging Optics (eyepieces, f-theta objectives, camera lenses with up to 7 lens elements, image relay systems, SWIR objectives) and Spectroscopy (high resolution or compact spectrometers from UV to NIR, hyperspectral and multispectral imaging). Illumination Design is often a topic too. I designed optics for automotive interior and exterior lighting, medical and dental headlights, UV disinfection devices, long range spotlights, projectors. I have a little laboratory where I can also build physical prototypes after the virtual prototyping (optical simulation) is done. The lab features a laminar flow cabinet, spectrometer, general purpose optomechanics, power supplies, laser and LED sources, 3D printer, UV cure and bonding supplies, laser cutter/engraver, oscilloscope, multimeter, soldering station, cameras and lenses, light microscope, SWIR camera.. and more. Regarding the optical design and simulation tools I use FRED (Photon Engineering), Quadoa and Zemax (only if absolutely necessary). Both of the first too are capable of importing and exporting Zemax OpticStudio, Code V, OSLO and CAD compatible formats. FRED is an excellent tool to model non-sequential (non-imaging) systems and coherent laser beams. For modeling stray light analysis and scattering this is the best tool on the market. Quadoa is used for imaging optical design, relatively new but exceptionally innovative optical design software. I have a range of software tools which I'm skilled at and can come handy during the project. Couple of examples: CAD modeling (Shapr3D), data analysis and manipulation (Matlab, WolframAlpha), design guidelines and calculators (MS Excel with VBA). A typical project takes 20-100 hours of work. General consultations will take less and larger projects including prototype builds will take more. I run the DIY-Optics website and have a company in Switzerland which can support your project in many ways: optical an mechanical engineering, prototype builds and tests. If your project deals with light, I'm sure I can help you finding a solution.