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# Hardware & Software Engineer | Embedded Systems & PCB Design I design custom PCBs and develop embedded software for production-ready hardware solutions. Core Competencies - Embedded Systems Development - PCB Design and Hardware Integration - Linux Kernel and Device Driver Development - Mobile and Web Application Development - Industrial IoT and Automation Systems Technical Skills Languages: C/C++, Python Frameworks: STM32 HAL, ESP-IDF, Qt, TouchGFX, LVGL Hardware Design: Altium Designer, KiCad, Fusion 360, Orcad Microcontrollers: STM32, ESP32, RP2040, nRF52, NXP i.MX RT series Microprocessors: NXP i.MX8-9, Rockchip (RV1126, RK3588), Allwinner T/A Series Communication: RS485, RS422, CAN/CAN FD, SPI, I2C, Modbus, Ethernet, WiFi, Bluetooth Embedded Linux: Buildroot, Yocto, device drivers, kernel customization OS: FreeRTOS, Zephyr High-Speed Design: SGMII, RGMII, LVDS, PCIe, LPDDR4/DDR4, LPDDR3/DDR3 routing Mobile/Web: Android, iOS app development, web dashboards for hardware control Specialized Knowledge - Multi-layer PCB design (1-18 layers) with signal integrity analysis - Embedded Linux root file systems and video streaming - Industrial automation and IoT gateway development - OTA updates and remote device management - Cross-platform application development for embedded devices -Mass production, DFM optimization 3+ years experience delivering complete hardware-software solutions from concept to production.

Welcome! I’m Naim, an embedded software engineer who loves giving “silent” circuits a real voice. From first sketch to production run, I provide consulting and development services for every stage of embedded software. Who am I? • Electronics engineer with experience in various fields including avionics, tracking systems, and IoT. • Comfortable on STM32, TI, ESP32, Raspberry Pi Pico, Arduino, and most ARM/RISC MCUs • Hands-on experience turning concepts into working prototypes and production-ready systems. • Familiar with safety-critical software development and relevant coding standards. How do I work? 1. Project Requirements Analysis We talk through objectives, constraints, and “must-have” features. 2. Plan the project I break the work into clear steps, determine the right tools and techniques, and set a clear timeline to ensure the project is delivered on time, 3. Build it right I design first, code last. My goal is to deliver clean, efficient and maintainable software that stays aligned with the requirements. 4. Testing and Verification Unit tests, on-target debugging, and regular check-ins. I always ask myself two questions: Am I building the right thing? and Am I building it right? 5. Delivery and Follow-up After project completion, I provide the necessary docs, technical reports and build instructions to ensure ease of understanding and use, while also providing technical support and follow-up after delivery. I’m ready to take on short-term projects as well as long-term R&D engagements. Whether you’re launching something new, refining an existing code, or tracking down issues, I’m here to help.

About Me: I am a passionate and experienced embedded software engineer with 8+ years of expertise in developing firmware and embedded systems. My proficiency lies in designing, implementing, and debugging software for embedded applications with a focus on IoT and real-time systems. With a keen eye for details and a commitment to delivering high-quality solutions, I enjoy tackling complex challenges in resource-constrained environments. Let's Get Started: If you're looking for a reliable and skilled embedded software engineer to bring your project to life, feel free to reach out. I am eager to discuss your requirements and how I can help you achieve your goals with efficient, secure, and well-documented embedded solutions. Services Offered: Embedded systems programming (C/C++) RTOS-based firmware development (FreeRTOS, Zephyr) Custom bootloader development with OTA capabilities Secure IoT device development (MQTTS, HTTPS) Wireless connectivity implementation (GSM, WiFi, BLE, GPS) Signal processing and sensor integration Power optimization for battery-operated devices PCB design coordination and hardware debugging Why Choose Me: Expertise: With extensive experience in embedded systems development, I bring a comprehensive understanding of hardware-software interactions and industry best practices across multiple platforms (STM32, ESP32, nRF52). Quality Assurance: I implement rigorous testing procedures to ensure the reliability, stability, and security of the firmware I develop, even in demanding environments. Custom Solutions: I tailor my services to meet the specific needs and requirements of each project, offering flexible and scalable solutions optimized for performance and power efficiency. Communication: I believe in clear and transparent communication throughout the project lifecycle, ensuring that clients are informed and involved every step of the way. Timely Delivery: I am committed to delivering projects on time, without compromising on quality or functionality, with thorough documentation for future maintenance. Fields of interest: Real-time embedded systems IoT and connected devices Signal processing Bioinstrumentation (EKG, health monitoring) Beehive monitoring and agricultural technology Smart home and automation systems

If your embedded project is stuck, behind schedule, or needs firmware that survives the real world (not just a demo bench) this is the profile you've been looking for. I'm a firmware engineer with 9+ years in automotive-grade embedded systems (NXP S32K, Infineon AURIX TC3xx), worked for premium customers (DAF Trucks NV, Audi, JaguarLandRover, JohnDeere, Mercedes-Benz), after a recent lay-off, now specializing in ESP32, IoT and connected device firmware. I bring zero-defect discipline from safety-critical automotive development into the IoT space; ISO 26262 and MISRA C principles, rigorous power management, and the kind of reliability that doesn't break in production. WHAT I SPECIALIZE IN * RTOS & Low-Level Firmware Production-grade experience with Zephyr and FreeRTOS: task scheduling, IPC, DMA, interrupt latency, and power domains. On STM32, ESP32, and nRF52/91 series. I write firmware that is clean, documented, and maintainable by your next engineer - not just by me. * Automotive Protocols & Industrial Comms CAN-FD, FlexRay, UDS diagnostics, Ethernet from the automotive world. SPI, I2C, UART, RS-485, Modbus, MQTT/TLS for industrial and IoT. I speak both languages. * Cellular IoT & GNSS (nRF9151 / nRF9161) Specialist in the nRF Connect SDK and Zephyr RTOS. I design modem state machines for LTE-M/NB-IoT, implement eDRX/PSM for multi-year battery life, and integrate GNSS positioning with the power awareness that cellular+GPS requires. I know where the power budget bleeds before you even ask. I measure the power consumption with Nordic PPK-II. * Next-Gen Multiprotocol SoC (nRF54L15) Hands-on with Nordic's latest ARM Cortex-M33 platform. Bluetooth 5.4 / 6.0, Matter, Thread, and Zigbee on a single chip. If you're building a product on the nRF54L15 and need someone who actually knows the SDK rather than learning on your project's clock, I'm one of a small number of engineers on the platform with real experience on this silicon. * HMI & Embedded Graphics (LVGL) Smooth, responsive touchscreen interfaces on resource-constrained hardware. ESP32, STM32, custom display drivers. If you need a polished UI on a microcontroller, I've built it. WHAT I DO DIFFERENT THAN OTHERS I run a purpose-built embedded development environment that lets me move fast without cutting corners. Typical projects that take two weeks elsewhere, I deliver in four to five days - with test results, documentation, and code that passes review. My automotive background means I default to the habits that matter: Defensive coding, explicit error handling, register-level debugging before assuming the hardware is wrong, and honest estimates I actually hit. I do work hourly as well as by fixed-price milestones, daily updates on active projects, and I stay available through delivery. You won't be chasing me for status. CURRENTLY AVAILABLE FOR ✔ Cellular IoT / Asset Tracker firmware (nRF91 series) ✔ nRF54L15 firmware, Bluetooth 6.0, Matter, Thread, Zigbee ✔ Zephyr RTOS bring-up and driver development ✔ FreeRTOS firmware on STM32 / ESP32 ✔ LVGL HMI development ✔ Fast prototyping on Arduino/ESP32 ✔ Sensor integration ✔ Firmware debugging & rescue (stuck projects welcome) ✔ Long-term retainer / ongoing embedded support ✔ Open for contract to hire opportunities Send me your brief. I'll tell you honestly within a few hours whether I'm the right fit - and if I am, we'll move fast. Regards, Ibrahim

Hello! As an expert of 9+ years in embedded software and hardware development, I offer software and hardware solutions in line with customer requirements. ● Experience about STM32, nRF52, PIC, AVR, Arduino, TI CC26XX, TI TM4C123, MSP430, ARM Cortex ● Low level/baremetal programming and driver development experience ● Experience about C, C++ and C# programming languages ● Real time operating systems (RTOS) experience ● Knowledge and experience about CAN, UART, SPI, I2C and USB communication protocols ● Experience about BLDC motor controllers, PID controller design and applying to microcontrollers ● Driver, library and application development for analog or communication based sensors ● Experience about WIFI, Bluetooth, RF and GSM modules ● Time-critical and safety-critical embedded software development ● Experience about QT based desktop application and user interface development ● Experince about software development life cycle and documentation Development Platforms and Programs: ● Keil uVision ● STM32CubeIDE ● Segger Embedded Studio ● Code Composer Studio ● MPLAB ● Altium Designer ● CCS C ● QT Creator ● TouchGFX ● Arduino IDE ● MatLab ● Visual Studio ● Nextion ● Proteus ● LTspice ● Fritzing ● STM Studio

Hi, I’m Bahtiyar. I'm an Electronics Engineer with over 8 years of experience designing and building strong, efficient, and secure embedded systems, taking ideas from start to finish. If you need reliable firmware that runs well, carefully designed hardware ready for making, or a complete system put together, I have the skills and experience to do great work for your project. What I Can Do For You: 🔹Embedded Firmware: I write solid C/C++ code for microcontrollers (STM32, PIC series, ESP32/8266, RP2040, Atmel) to make sure your systems run smoothly and reliably. This includes setting up communication (UART, I2C, SPI, CAN, RS485) and making different parts talk to each other. 🔹Hardware & PCB Design: I design quality circuit boards using tools like KiCAD, Altium Designer, Eagle, Proteus, and EasyEDA. I focus on making sure they work well, are easy to manufacture, and fit your budget. 🔹System Testing: I use tools like LTspice, Logisim Evolution, and Proteus to thoroughly test designs before you spend money on production. This helps catch problems early and speeds things up. 🔹Putting It All Together (Integration & Prototyping): I have experience connecting various parts – sensors (MPU6050, BNO055, HX711+), motors (BLDC, Stepper), wireless tech (WiFi, Bluetooth, NRF24L01), displays (LCD, Nextion, Nokia 5110, 7-Segment), and core functions (DMA, ADC/DAC, PWM, EEPROM). I can also quickly build prototypes to test out your ideas. 🔹User Interfaces: I can create easy-to-use interfaces with Nextion displays and .NET Framework so people can interact with your device simply. Why Work With Me? 🔹Careful Work: I pay close attention to detail in both software and hardware to make sure things are high-quality and work correctly. 🔹On Time: I have a strong record of finishing projects by their deadlines. You can rely on me to keep your project moving forward. 🔹Good Communication: I like to work closely with my clients. I'll keep you updated and make sure we're always on the same page, matching your vision. 🔹Problem Solver: I enjoy figuring out technical challenges and finding practical solutions that work best for what you need. Ready to talk about your embedded systems project? Send me a message here on Upwork. I’d like to hear about your ideas and see how I can help your project succeed. Let's build something great!