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Professional Embedded System Engineer with 11 years of experience on hardware and embedded software development. PCB Tools : - Altium - KiCAD - Eagle - EasyEDA Microcontroller : - AVR - STM32 - ESP8266 / ESP32 - NXP - Texas Instrument - Arduino - Raspberry / Banana / Orange Pi SBC Wireless Communication - NFC (MF classic, desfire, ultralight, NTAG424, NTAG213, NTAG21x, ICODE) implemented on payment, membership, access control with various NFC reader on desktop such as ACR122U, ACR120U, castle tech QP8000 to android custom reader - RFID short / long range - WiFi, Bluetooth, LoRa Wired Communication - UART, SPI, I2C, CAN, LIN, RS232, RS485 Protocol Data - MODBUS RTU / ASCII, CANOpen - HTTP, MQTT, TCP, UDP

1. RWR Private Ltd. Sep 2022 - Present 2. Global Engineering Services Aug 2008 - June 2020 Working as a PCB Design Engineer: Job description includes: Responsibilities include completing the designing of PCB projects from scratch to final Gerber data output taking into account the state of the art designing tools for rigid, flex boards by using such advanced CAD tools as Cadence OrCAD & Allegro, Altium Designer, KiCad, Eagle, easyEDA. 1. Experience with Rigid, Flex, and Rigid-Flex boards design. 2. Hand on high speed multi-layer PCB layout Design. 3. Convert paper design to neat CAD based schematics. 4. Surface mount, BGA and through hole designs with blind/buried and via-in- pad technology. Layouting Micro level chip like 0.5mm. 5. Impedance Controlled layout. 6. Provide High Speed design consultancy for placement using early analysis and design optimization at system level. 7. Split ground planes and power planes for mixed analog and digital designs. 8. Challenges involve highly complex electrical, mechanical constraint driven designs (requiring 100% manual routing, impedance controlled stackups, upto 10Gbs interfaces). 9. High density interconnects (>32 layers, Blind/Buried/Micro Vias and PTH via in-pad technology), Packaging (200+ pins/sq inch, PTH, SMT, Mixed), meeting client's SI, EMC, DFM, DFA, DFT and Time to Market requirements just like pressure cooker situations. 10. Experience in PCB layout design constraints for mixed/RF signal, high speed signal impedance control, memory interfaces, power distribution, heat dissipation, and optimization for EMI performance. 11. Prepared fabrication and assembly notes. 12. Generated the Gerber package for fabricator. 13. Have work on projects whose have round about 50,000 connection and more than 10,000 components. 14. Understand datasheets and schematics, generating netlists and constraints, and using schematic for layout and routing reference. 15. Worked on signal constraints like physical, spacing and electrical. 16. Worked on a variety of projects like Communication, IT & computing, Analog, RF, high speed multi layer digital designs & Medical projects, etc.

⭐️⭐️⭐️⭐️⭐️ Embedded Systems Engineer with over 4 years of industry experience delivering complete, production-ready solutions in hardware design, firmware development, and product integration. As a freelance engineer, I’ve collaborated with startups and established companies to bring over 20 products to market across the consumer, industrial, and medical sectors. I work across the full product lifecycle — from early specification and prototyping to manufacturing support and field testing. My expertise spans custom PCB design, RTOS-based and bare-metal firmware, and embedded Linux systems, using technologies like Altium, STM32, nRF52, ESP32, FreeRTOS, Zephyr, and more. I also support clients with architecture decisions, hardware/firmware co-design, and design optimization for cost, manufacturability, and reliability. Relevant Skills: ●​ Hardware design and PCB development (Expert) -​ Custom PCB design: Rigid, Flex and Rigid-flex technologies. -​ EDA tools: Altium Designer, OrCAD and KiCAD. -​ System-level design and project planning. -​ Schematic capture and library management. -​ Multilayer layout design following IPC and industry best practices. -​ High-speed digital, mixed-signal, RF/wireless, and power electronics design. -​ Interfaces: DDR, LVDS, HDMI, SATA, USB, Ethernet. -​ Circuitry: DC-DC converters, MCU/MPU/SoCs, ADCs/DACs, sensors, etc. -​ Familiar with PCBA manufacturing/assembly requirements and DFM/DFT rules. ●​ MCU Firmware programming (Advanced) -​ Languages: C, C++, Rust, ARM Assembly. -​ IDEs and tooling: Eclipse-based, VSCode, bare-metal toolchains, Make/CMake. -​ Firmware architectures: Bare-metal, RTOS, HAL/LL APIs. -​ RTOS: FreeRTOS, Zephyr (hands-on experience). -​ Ecosystems: STM32 (HAL/LL), Espressif (ESP-IDF), Nordic (nRF SDKs). -​ Version control: Git and SVN. -​ Familiarity with MISRA C/C++ standards -​ Architectures: ARM Cortex-M/R, Xtensa (ESP32). -​ Driver development: I2C, SPI, UART, ADC, PWM, external ASICs. -​ Protocols & stacks: BLE, LoRaWAN, HTTPS, MQTT. ●​ Embedded Linux development (Intermediate) -​ Linux for custom hardware platforms (MPUs). -​ Yocto Project: Linux distribution configuration and build. -​ Device tree and kernel driver development (sensors, ASICs, etc.).-​ Application development in C, C++, Python, Rust. -​ ARM Cortex-A architecture familiarity. ●​ FPGA & HDL Development (Intermediate) -​ FPGA/SoC development using Verilog, SystemVerilog, and VHDL. -​ Platforms: Xilinx Spartan-7, Zynq-7000; Intel (Altera) Cyclone, MAX series. -​ Custom IP design and hardware/software integration. -​ Familiarity with AXI/AMBA bus architectures. If you’re interested in working with me, I’m available via Freelancer and will always answer your questions or requests promptly. Thank you for your time and have a great day.

Capable of developing Electrical and Automation projects from concept to production. - Programmable Logic Controller (PLC) system design, analysis, troubleshooting - Siemens Tia portal - SIMATIC Step7 - SIMATIC WinCC - GX Works - Any PLC compatible with LD - Ladder diagram; FBD - Function block diagram; ST - Structured text; IL - Instruction List; STL, AWL - Statement List; SCL - Structured Control Language) such as S7-200 S7-300, S7-1200, S7-1500 etc - HMI / SCADA system design, Analysi., -Troubleshooting -Circuit Designing - MATLAB/Simulink

Live Experts LLC is a multidisciplinary technology company specializing in Engineering, AI/ML, Embedded Systems, IoT, and Automation Solutions for startups, businesses, and enterprises worldwide. With over a decade of technical delivery experience and hundreds of successfully completed projects, we help clients transform complex ideas into scalable, production-ready solutions that solve real business and operational problems. Our strength comes from combining software, AI, automation, electronics, and engineering expertise under one team. This allows us to handle both digital systems and real-world hardware projects with practical implementation experience. Our expertise includes: • Artificial Intelligence (AI) & Machine Learning (ML) • Generative AI & Conversational AI • AI Chatbots & AI Agents • Computer Vision & OCR Systems • Predictive Analytics & Data Intelligence • Workflow Automation & AI Integration • Embedded Systems & IoT Solutions • Arduino, ESP32 & Raspberry Pi Development • PLC, SCADA & Industrial Automation • Electrical & Mechanical Engineering Support • Sensor Integration & Smart Monitoring Systems • AI-Powered Dashboards & Business Platforms • Cloud APIs & System Integrations • Automation & Control Systems We work with modern technologies including: Python, OpenAI, ChatGPT, TensorFlow, OpenCV, Node.js, React, FastAPI, PostgreSQL, AWS, Docker, MATLAB, Arduino, ESP32, Raspberry Pi, PLC systems, and industrial automation platforms. What makes us different is our ability to bridge the gap between: AI + Automation + Embedded Systems + Engineering Many companies can build software. Others can build electronics. Very few can combine AI, automation, hardware, and engineering into complete intelligent systems that work in real business environments. We have experience working across: • Industrial Automation • Healthcare • Logistics & Fleet Systems • Manufacturing • Finance & Trading Systems • Smart Monitoring Systems • Operational Dashboards • IoT & Connected Devices • AI Business Solutions • Intelligent Automation Platforms Our development approach focuses on: • practical implementation • scalable architecture • clean UI/UX • reliable integrations • business-focused solutions • long-term maintainability • clear communication • premium execution quality Whether you need: • an AI-powered platform • an embedded IoT device • industrial automation • computer vision systems • AI automation workflows • predictive analytics dashboards • AI chatbots • sensor-based monitoring systems • electrical/mechanical engineering support • or a complete intelligent system Live Experts can help design, develop, and deploy reliable solutions tailored to your business goals. We believe in building long-term partnerships and delivering systems that create measurable operational and business value.

✋ Hi, I’m Mairaj Ali, a verified Electrical/Electronics Engineer and Professional PCB Designer with over 8 years of experience in designing high-quality circuit boards using Eagle, Altium, KiCAD, and EasyEDA. Also I am a professional Certified EasyEDA designer (Certificate is attached in portfolio section). My expertise lies in the following areas: ✅ PCB Design & Prototyping using Eagle, Altium, KiCAD, EasyEDA ✅ CAD/Housing Design for PCBs in Fusion360 ✅ MATLAB/SIMULINK & Python programming ✅ Embedded Systems design (Arduino, AutoCAD, Multisim, Proteus, LTspice, PSpice, C/C++) ✅ VHDL/Verilog HDL, Xilinx, and FPGA development ✅ Research & Technical Writing (Plagiarism Removal, Academic Writing, and Thesis Writing) ✅ Advanced Engineering Mathematics (Calculus, Differential Equations, Numerical Methods, Linear Algebra) ✅ Expertise in LaTeX for high-quality document formatting I am a Preferred Freelancer, ranking among the top 1% of skilled professionals. My passion for PCB design and embedded systems drives me to deliver the best solutions on time and within budget. Whether you're looking for custom PCBs, embedded solutions, or writing services, I can help you achieve your goals. Let’s turn your ideas into reality. Feel free to check my portfolio and message me to discuss your project anytime – I’m available 24/7. #PCB #PCB_designing #Electrical #Electronics #ElectricalEngineering #MATLAB #SignalProcessing #Mathematics #Latex #AutoCAD

DearSir, My background is related with: -Digital Motor Control -Analog Design -Electronic Design -PowerElectronics -Renewable energy -PCB design -Embedded system -Matlab -Simulation of hardware For each concept descriptions are as follows: Digital Motor Control: -3-phase induction motor vector control drive -Flux estimation algoritm generation -DSP(TMS320) implementation on motor drive -Low speed application -Torque and speed loop generation -Control algoritms -BLDC motor -Step motor -DC motor Analog design -Low power distribution -Noissless special opamp based analog circuits -Analog filters -Orcad simulation of several circuits Electronic Design -RF transmitter and receiver -Bluetooh reade rand transmitter -Magneticreader PowerElectronics -Implementation motor drive -AC/DC converter -DC-DC converter -Battery charger -Solar inverter -Renewable Energy -Uninterruptle power supplies PCB design -Schematic design by Altium -PCB design by Altium -Power board design -SMPS board design -Easyeda -CAD files of manufacturers Embedded system -ESP32,ESP8266,modules -Bluetooth and Wifi -PIC18,PIC24,PIC30 and dsPIC applications -Ardino -MSP430 -Atmel -DSP(Texas Instruments) -Renesas -STM32 -C2000 Matlab -Power Electronics simulation -Motor drive -WindEnergy -Solar Energy -Control applications Simulation of Hardware -Orcad Simulation (TI,National, LinearTech, Maximlibraries) -LTI -National -Matlab -Easyeda

Modular Solutions delivers advanced Engineering, AI/ML, Embedded Systems, and IoT solutions for startups, enterprises, researchers, and industrial clients worldwide. We transform complex ideas into production-ready systems — from AI platforms and automation tools to embedded hardware, enterprise software, industrial controls, simulations, and engineering designs. Our expertise combines Artificial Intelligence, Machine Learning, Computer Vision, Deep Learning, Data Science, Analytics, and Automation with strong software engineering capabilities in Python, C/C++, Java, C#, .NET, PHP, JavaScript, SQL, MATLAB, Simulink, and Linux-based systems. On the hardware side, we specialize in Embedded Systems, IoT Devices, FPGA/Verilog/VHDL, PCB Design, Raspberry Pi, Arduino, ARM development, RF systems, electronics, firmware, industrial automation, sensor integration, DSP, and hardware/software interfacing. We also provide Mechanical, Electrical, Civil, and Structural Engineering services including AutoCAD, Civil 3D, SolidWorks, CAD/CAM, Product Design, 3D Modelling, Simulation, Renewable Energy systems, and technical feasibility analysis. Our experience includes: • AI-powered analytics and automation platforms • Facial Recognition and OpenCV systems • Enterprise SaaS and backend platforms • Industrial automation and control systems • FPGA and embedded hardware development • MATLAB/Simulink modeling and simulation • IoT evaluation and sensor systems • CAD drafting and engineering design • Unity 3D and simulation applications • Data analytics and statistical analysis • Research, technical writing, and documentation We also support clients with Project Management, Business Analysis, Finance, Accounting, Bookkeeping, QuickBooks reconciliation, Reporting, Scientific Research, Research Writing, Technical Writing, and enterprise consulting. Our technical stack and domains include: AI & Machine Learning | Deep Learning | Neural Networks | Computer Vision | OpenCV | Data Science | Big Data | Statistical Analysis | SPSS | R Programming | Python | MATLAB | Simulink | Algorithm Development | Data Mining | Text Mining | C Programming | C++ | Java | C# | PHP | JavaScript | SQL | .NET | Software Architecture | Linux | Web Development | Electronics | Electrical Engineering | FPGA | Verilog/VHDL | Embedded Systems | IoT | Arduino | Raspberry Pi | ARM | PCB Design | RF Communications | DSP | CAD/CAM | AutoCAD | SolidWorks | Mechanical Engineering | Civil Engineering | Structural Engineering | Product Design | 3D Modelling | Unity 3D | Technical Writing | Research Writing | Project Management | Finance | QuickBooks | Business Analysis Clients choose Modular Solutions for strong communication, fast execution, technical depth, and the ability to solve complex engineering and software challenges under tight deadlines. We focus on delivering reliable, scalable, and production-ready solutions tailored to each client’s goals.