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If you're building a robotics system, an autonomous vehicle simulation, or an embedded Linux product, I've been working on automotive embedded hardware and autonomous vehicle simulations for over 4 years. Skills: C/C++ · ROS · SLAM · CARLA Simulation · Yocto · Embedded Linux · Qt/QML · MIPI CSI-2 Linux · QNX · RTOS AUTOSAR Classic/Adaptive · CAN · SOME/IP · Ethernet · STM32 · PIC · I2C · SPI Docker · Git Key areas of expertise include: • Robotics, SLAM & Simulation: Developed, tuned, and evaluated SLAM and perception pipelines (ORB-SLAM, ROS/ROS2, OpenCV - using Python) for autonomous vehicles in simulated (CARLA) and research environments, achieving robust multi-weather localization. Published author in top-tier engineering conferences and journals (DOI:10.1088/1742-6596/2811/1/012029). • Embedded Linux - Raspberry Pi car dashboard with live camera stream: Built a car dashboard on a custom Yocto Linux image (Scarthgap 5.0 LTS), cross-compiling a Qt 6.8/QML frontend and ROS 2 Humble backend via the Yocto SDK, running on a Raspberry Pi 4. MIPI CSI-2 camera bring-up (Sony IMX219) over on the custom image using libcamera, wrote a C++ capture program that JPEG-compresses each frame and publishes it over ROS 2, and integrated the live stream into the dashboard. Cross-compiled for the Pi via the Yocto SDK. Self-directed engineering project; full source and engineering notes on GitHub. • Automotive Embedded Software Engineering: Developed and debugged production-grade AUTOSAR software in huge projects, covering BSW, RTE, and service/communication layers. Integrated and optimized automotive communication stacks (CAN, Ethernet, SOME/IP), improving system stability and reliability. How I can help: Whether you need end-to-end solutions for automotive and robotics systems, robust embedded firmware or advanced perception pipelines, I’m ready to deliver results that meet your standards for safety, reliability, and innovation. Let’s discuss how I can bring your next project to life.

My name is George. I am a Prepress specialist and a professional in all print design work. Check examples of my finished work on behance.net/georgeisaac4 Services Offered: TYPSETTING & FORMAT LAYOUTS PREPRESS SERVICES / GRAPHIC PRINT DESIGN: I possess the expertise to meticulously design and prepare a wide range of print materials, encompassing books, magazines, brochures, flyers, packing labels, business cards, presents, and boxes, for professional printing. The designs will be meticulously crafted to align precisely with your specific requirements, ensuring optimal print quality. Key services include: ● Error bleed and crop mark correction ● Color correction (CMYK, Spot Pantone, or additional colors) ● Overprint correction ● Trap setting between colors, overlaps, or masking ● Preparation of die-cut, SpotUV, HotStamp, Foil, and banderole files ● Typesetting work APPROVE PRINT BOOK & E-BOOK FILES FOR ONLINE PUBLISHING : I can format your files to ensure their approval on various online publishing platforms, including: ● Amazon Kindle Direct Publishing (KDP) and Kindle ● Ingramspark ● Createspace. ● Lulu. ● DriveThruRPG. ● BabyBook. I will provide your files in fixed layout formats such as (.PDF, .EPUB, .MOBI, .KPF, etc.). FILES EDITING AND FIXING: ● InDesign ● Photoshop ● illustrator ● Acrobat Pro Furthermore, I possess expertise in a diverse range of graphic design software. PHOTO EDITING SERVICES ● Clipping Path ● Portrait Retouching ● Product Retouching ● High-End Photo Retouching ● Old Photo Restoration ● Photo manipulation With over 20 years of experience, I have honed my skills in these areas, particularly through my tenure at Printing & Advertising Agencies. Looking forward to working with you!

🚀 Production-ready mobile & web applications built with speed, quality, and long-term scalability in mind. ⚡ I combine modern AI-assisted development with production experience to deliver polished applications faster—without sacrificing code quality or maintainability. 📱 Specialized in React Native, Expo, React, Next.js, and TypeScript for iOS, Android, and modern web applications. I've built and shipped production software across industries including AI, FinTech, Healthcare, Retail, Hospitality, Education, and SaaS, working on products ranging from MVPs to large-scale customer-facing applications. What I can help you build ✅ React Native & Expo Apps (iOS & Android) ✅ React & Next.js Applications ✅ MVP Development ✅ AI-Powered Applications ✅ Beautiful, Responsive UI ✅ REST & GraphQL API Integration ✅ Authentication & Firebase ✅ Stripe & Plaid Integrations ✅ Push Notifications & In-App Purchases ✅ Maps, BLE, NFC & QR Features ✅ Admin Dashboards & Internal Tools How I work ✔ Clean, scalable architecture ✔ Reusable component systems ✔ Performance-focused development ✔ Pixel-perfect implementation ✔ Clear communication ✔ Fast iteration and delivery ✔ Long-term maintainable code Technologies React • React Native • Expo • Next.js • TypeScript • Firebase • Redux Toolkit • Zustand • TanStack Query • NativeWind • Tailwind CSS • REST APIs • GraphQL • Fabric.js If you're looking for someone who can take ownership, communicate clearly, and ship polished mobile or web products efficiently, I'd be happy to discuss your project. Let's build something great.

Your prototype works on the bench. The first time a real customer plugs it in, it falls over — Wi-Fi setup fails, the firmware locks up after a week, the battery dies in three days instead of three months. That's the gap I close. I'm an embedded systems and IoT engineer. I take connected devices from "it works for me" to "it ships to customers and survives in the field." Most of my work falls into three areas: Embedded firmware on ESP32, STM32, nRF52, RP2040, AVR, and Raspberry Pi. C/C++ and Python. FreeRTOS and bare-metal. Low-power design when battery life matters — pushing sleep currents into single-digit µA, debugging the wake-up paths, tracking down the rogue peripheral that's keeping your device awake. Connectivity across BLE, Wi-Fi, MQTT, LoRa, LTE-M, NB-IoT, CAN, RS-485. Consumer IoT and headless devices. Captive-portal Wi-Fi onboarding so a non-technical customer can set up the device from their phone. Systemd watchdog services that recover from network drops automatically. OTA update infrastructure for fleet deployment. SD card write minimization on Linux-based devices, because the field failure mode no one warns you about is filesystem corruption six months in. PCB design when the project needs it. 2 to 8 layer boards in KiCad and Eagle, IPC-2221/7351 compliant. DFM and DFT review baked in from the schematic stage. Signal integrity, RF layout, and the kind of board-level decisions that affect yield, cost, and certification much more than firmware ever will. A few things worth knowing about how I work: I'm honest about scope. If your project doesn't need a custom PCB, cloud infrastructure, or edge ML, I'll tell you. I'd rather build the right thing for your actual budget than oversell. I think about the device's whole life, not just the demo. SD card longevity, Wi-Fi recovery, what happens when your customer's router changes, what happens when the firmware bug shows up in month six. The failure modes that matter are rarely the ones that show up on day one. I document for the human who comes after me. The setup guides and handoff docs I write are aimed at a non-technical reader — your future self, your in-house team, or whoever takes ownership when the contract closes. If you're building a connected device and the path from working prototype to shipping product isn't obvious yet, send me a message with what you're working on. I'll tell you honestly whether I can help.

Most embedded projects stall at the same points: firmware that works on a breadboard but breaks on the real board, PCB layouts that pass DRC but fail signal integrity, or a design that can't be handed off to a manufacturer without a full redesign. I close those gaps. I design multi-layer PCBs in KiCad with production constraints built in from the start. Layer stackup, impedance control, DFM rules for JLCPCB/PCBWay, and a BOM sourced from LCSC before layout even begins. On the firmware side, I write C/C++ for ESP32, STM32, and RP2350 targets using FreeRTOS, with drivers built over SPI, I2C, UART, and CAN. I've shipped USB HID firmware running at 1000 Hz, closed-loop PID motor control, MPPT solar charge logic, and MQTT-based IoT integration. When hardware and firmware have to work together under tight constraints power budget, real-time deadlines, physical form factor, that's where I do my best work. Contributed a linker script fix to the official STM32CubeF4 HAL repository (merged PR #201).

✅ 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.