As a seasoned freelance programmer with a strong foundation in security and Unix systems, I bring a wealth of expertise to the realm of software development. With a passion for tackling complex challenges, I specialize in full-stack development, reverse engineering, and imparting knowledge through tutoring. Technical Proficiency: - Programming Languages: Proficient in a diverse range of languages including Python, Java, Ruby, Perl, C, JavaScript, and more! - Security Expertise: Extensive experience in identifying and mitigating security vulnerabilities. Adept at conducting penetration testing, threat modeling, and implementing robust security measures. - Unix Mastery: In-depth understanding of Unix-based systems, with a focus on Linux. Capable of optimizing system performance and ensuring the security and stability of Unix environments. Full Stack Development: - Frontend: Skilled in crafting responsive and user-friendly interfaces using HTML, CSS, and JavaScript frameworks such as React and Angular. Backend: Experienced in developing scalable server-side applications with proficiency in Node.js, Django, and Flask. Database Management: Proficient in designing and implementing databases using MySQL, PostgreSQL, and MongoDB. Reverse Engineering: - Binary Analysis: Expertise in reverse engineering and analyzing binaries to uncover vulnerabilities and enhance software security. Tutoring and Mentorship: - Educational Background: Possessing a comprehensive understanding of programming fundamentals, security concepts, and Unix systems, I am adept at conveying complex ideas in an accessible manner. - Mentorship: Committed to fostering the growth of aspiring developers through personalized guidance, code reviews, and hands-on mentorship. Additional Skills: - DevOps: Proficient in implementing CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes) for streamlined development and deployment processes. - Networking: Knowledgeable in networking protocols, firewall configurations, and VPN setups to ensure robust and secure communication. - Cloud technologies: AWS, GCP, and Azure. Professional Approach: - Problem Solver: Known for my analytical mindset and creative problem-solving skills, I thrive in dynamic environments and excel at finding innovative solutions to intricate challenges. - Collaborative Team Player: Effective in cross-functional collaborations, I communicate technical concepts to both technical and non-technical stakeholders, fostering a cohesive and productive working atmosphere. With a commitment to continuous learning and a track record of delivering high-quality solutions, I am well-equipped to contribute to projects requiring a versatile and experienced freelance programmer with a focus on security and Unix environments.

I've developed and deployed 20+ production embedded & IoT products across healthcare, agriculture, wearables, security, automotive, and industrial devices. I design connected products end-to-end including firmware, multi-layer PCB, enclosure, and IoT dashboards, from concept to MVP to mass production. As a Senior Embedded Systems Engineer with a background in Electrical Engineering, I help startups, entrepreneurs, and engineering teams design, develop, and launch connected products and stay accountable for the result from the first schematic to the production line. 𝐖𝐇𝐀𝐓 𝐈 𝐎𝐅𝐅𝐄𝐑: ➛ Firmware Development: Secure, optimized C/C++ firmware for various Microcontrollers and SBCs. ➛ Hardware Development & Integration: Multi-layer PCB designs in Altium/KiCad with driver integration. ➛ Enclosure Design: 3D-printable prototypes through production-ready CAD. ➛ IoT Web & Mobile Dashboards + Cloud Integration: Web dashboards and mobile apps integrated with BLE/Wi-Fi/LoRa IoT devices. 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐒 𝐈'𝐕𝐄 𝐒𝐇𝐈𝐏𝐏𝐄𝐃 • Frostmed: Vaccine Transport Cooler (ESP32) - safe transit with live temperature visibility. Mass production. • SmartBolt: Smart Door Lock (nRF52840) - NFC tap-to-unlock, BLE app control, months on one battery. • Palm: Smart Thermal Waste Bin (ESP32) - Firmware, PCB, App & cloud fleet management. • NAPL: Groundwater Oil Filtration System (ESP32) - extracts oil from contaminated sites, solar-powered, unattended. • LoRaWAN Smart Call Device: emergency call button that works where cellular and Wi-Fi don't. 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄: • MCUs & SBCs: ESP32, STM32, nRF51/52/53/91, PIC, Raspberry Pi, Jetson Nano, Linux-based edge devices • Real-Time Operating Systems: FreeRTOS, Zephyr for deterministic, multi-threaded applications • ARM Processors & SoCs: Cortex-M & Cortex-A - bare-metal & RTOS firmware, Linux kernel porting, board support and driver development • Programming Languages: C, Embedded C, C++, MicroPython, Python, TinyML, Shell scripting, TCL • PCB Design: Altium Designer, KiCad, EasyEDA - schematic capture, multi-layer layout, high-speed design, 3D modeling, and prototyping • Networking & Communication Protocols: UART, SPI, I2C, CAN, Modbus, RS-485, BLE, MQTT, LoRaWAN, LoRa, HTTP/HTTPS, TCP/IP, WebSockets for sensor networks and cloud/device communication • Driver Development: Custom low-level drivers for GPIO, ADC, DAC, PWM, Timers, RTC, AC metering ICs, Watchdog, DMA, and memory-mapped IO • Sensor Integration: Environmental (BME280, SHT31), IMU/Motion (MPU6050, BMA400, ADXL345), Biosignals (ECG/bioimpedance, heart rate), Power Monitoring (INA219, ACS712), GPS/GNSS (u-blox), Time-of-Flight, Hall Effect • Cellular & GNSS Modules: SIM7600X (4G LTE), SIM800/900 series, Quectel, u-blox - AT command stacks, GNSS parsing, SMS/Call/HTTP, and fallback logic • Display & HMI: TFT (ILI9341, ST7789), OLED (SSD1306), E-Ink, Addressable LEDs (WS2812B, SK6812 RGBW) - LVGL, Qt, SquareLine Studio • IoT Web Dashboard & Mobile App Development: Flutter-based and custom web/mobile dashboards for remote monitoring and data sharing across devices • IoT Platforms & Cloud Services: AWS IoT Core, Azure IoT Hub, ThingsBoard, Blynk, EMQX, Mosquitto • Embedded Toolchains & IDEs: PlatformIO, ESP-IDF, STM32CubeIDE, nRF Connect SDK, VS Code - version control with Git & GitHub • Security & Updates: TLS/SSL, AES-encrypted OTA with rollback, secure bootloaders, CRC integrity 𝐔𝐒𝐄 𝐂𝐀𝐒𝐄𝐒 𝐈 𝐒𝐏𝐄𝐂𝐈𝐀𝐋𝐈𝐙𝐄 𝐈𝐍: 🔹 Medical & Consumer Devices: wearables, health monitors, smart appliances 🔹 Industrial Automation: sensor/actuator control, live system monitoring 🔹 Smart Agriculture: environmental sensing, LoRa field networks 🔹 Automotive & Energy: CAN systems, GPS tracking, smart metering, BMS 🔹 IoT Connectivity: secure cloud gateways, OTA update pipelines 🔹 Prototyping: POC development, research kits, lab platforms 𝐖𝐇𝐘 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄? ➛ Proven production experience - shipped products, not just prototypes. ➛ Milestone-driven development with clear planning and documentation. ➛ You own everything: schematics, firmware repo, Gerbers, STEP files. ➛ Straight answers - I flag requirements that will bite you at certification or manufacturing before you pay for them. ➛ Available post-launch for scaling, upgrades, and long-term support. Send me your product idea, spec, or half-finished prototype, and I'll reply with a concrete assessment of what it takes to ship it.

Greetings! I'm leading to BS in Computer Engineering, having 2 years of experience in Tutoring, development of different softwares. I can help you with following technologies. ✅ C / C++ (OOP, DSA, Communication Protocol UDP/TCP, Audio, OS etc.) ✅ Python (Pandas, Web Scraping, Automation – Selenium, PyTest, Requests etc.) ✅ Java / Kotlin (Android Studio, Audio Applications, Calling Applications etc.) ✅ Scripting (Linux --.sh & Windows -- .bat Scripting etc.) ✅ SQL / MySQL (Procedures, Functions & Data Analysis etc.) Tutoring Expertise: Languages You can Learn: (Basics to Advance with Notes & Examples Solving) ✅ C / C++ ✅ Python ✅ Java / Kotlin ✅ Scripting ✅ SQL / MySQL Courses You can Learn: ✔ CFP (Computing Fundamentals and Programming) ✔ OOP (Object Oriented Programming) ✔ DSA (Data Structures and Analysis) ✔ OS (Operating Systems) ✔ MI (Micro-Controllers & Interfacing) ✔ ES (Embedded Systems) ✔ DSD (Digital System Design) Developemnt Expertise: As a developer I can help you or create ✔ Android Applications with Audio Specification ✔ Simple GUI Based Games Using C++/Python ✔ Automation of Browsers (Edge or Chrome) ✔ Data Analysis Application using Python, SQL etc. ✔ App Scripts for Emails Marketing (Automation of Emails etc.), and Much More ... If you need any kind of help in any kind of technical stuff do contact me, we will have short discussion if you agree we can also have face time / meeting and we can discuss that. I aim to provide the best experience of learning and development and I'll try my best to build your idea into real. Regards, Book a Discussion Slot for Your Projects/Concerns below. Akif Ejaz,

Building AI-powered and SaaS applications that are faster to ship, cheaper to run, and built to scale. I'm a full-stack developer with 14+ years of experience and 21,000+ hours on Upwork. I specialize in two things: AI product development (LLM-powered apps, RAG pipelines, AI agents, GPT/OpenAI integrations) and SaaS application architecture using .NET, React/Angular, and cloud infrastructure. What sets my work apart is AI-assisted development — I leverage Cursor, Claude, and modern dev tooling to ship production-quality code significantly faster without sacrificing architecture or reliability. What I build: • AI agents, chatbots & RAG systems (LangChain, OpenAI, Claude, Vector DBs) • SaaS platforms & enterprise-grade applications • API-first & microservices architecture • Full-stack development (React, Angular, Next.js, .NET Core) • Legacy modernization (.NET Framework → .NET Core / cloud) I hold IBM certifications in RAG and Agentic AI (2026) and have delivered solutions across fintech, healthcare, real estate, and e-learning — always aligned to business outcomes. If you're building an AI product or modernizing a platform, let's talk. — Kunal

𝐌𝐨𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐛𝐮𝐢𝐥𝐝 𝐟𝐫𝐨𝐦 𝐬𝐜𝐫𝐚𝐭𝐜𝐡. 𝐈 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐥𝐚𝐮𝐧𝐜𝐡 𝐟𝐚𝐬𝐭𝐞𝐫 𝐚𝐧𝐝 𝐬𝐦𝐚𝐫𝐭𝐞𝐫. I specialize in building ready-to-deploy platforms like Healthcare systems, booking apps, SaaS products, and custom business solutions - saving you time, cost, and months of development. 𝐈 𝐚𝐦 𝐚 𝐒𝐞𝐧𝐢𝐨𝐫 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐚𝐧𝐝 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐭 𝐰𝐢𝐭𝐡 𝟏𝟐+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐢𝐧𝐠 𝐬𝐞𝐜𝐮𝐫𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬, 𝐒𝐌𝐄𝐬, 𝐚𝐧𝐝 𝐅𝐨𝐫𝐭𝐮𝐧𝐞 𝟓𝟎𝟎 𝐜𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐬. 👨‍💻 I specialize in building scalable, secure, and cloud-based backend platforms using C# ASP.NET Core, .NET 6/7/8, Web API, Microsoft Azure, AWS and the Microsoft .NET ecosystem, working across the full SDLC from system analysis and architecture to development, deployment, and long-term support. Main Focus: ✔ C#, .NET Framework, ASP.NET, ASP.NET MVC, ASP.NET Core ✔ WPF & Windows-based application development ✔ Blazor (Server & WebAssembly), Web API, REST & SOAP ✔ Entity Framework / EF Core, Dapper, LINQ, ADO.NET ✔ Angular (AngularJS-Angular 15), ReactJS, Next.js, JavaScript, jQuery ✔ SQL Server, MySQL ✔ CMS & E-Commerce: Umbraco, NopCommerce, Sitecore ✔ Cloud & DevOps: Azure, Docker, Kubernetes, CI/CD, DevOps ✔ Web & UI Technologies: Web Services, SOAP, XML, XSL, HTML, CSS, AJAX, DOM ✔ Best Practices & Methodologies: SOLID, DRY, Design Patterns, Agile/Scrum ✔ UI/UX & Design Tools: Figma, Illustrator, Dreamweaver, Photoshop ✔AI Integration: Automation, chatbots, LLM & NLP-based intelligent application features (OpenAI, Azure AI). 𝐁𝐞𝐲𝐨𝐧𝐝 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞 𝐎𝐩𝐞𝐧𝐀𝐈 / 𝐂𝐡𝐚𝐭𝐆𝐏𝐓 𝐀𝐏𝐈𝐬 𝐭𝐨 𝐛𝐮𝐢𝐥𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬, 𝐚𝐧𝐝 𝐢𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐟𝐞𝐚𝐭𝐮𝐫𝐞𝐬 𝐢𝐧𝐭𝐨 𝐦𝐨𝐝𝐞𝐫𝐧 𝐬𝐲𝐬𝐭𝐞𝐦𝐬. 𝐖𝐡𝐚𝐭 𝐬𝐞𝐭𝐬 𝐦𝐞 𝐚𝐩𝐚𝐫𝐭: ✔ Enterprise-grade backend architecture ✔ Scalable cloud solutions (Azure & AWS) ✔ Secure API development & system integration ✔ Clean, maintainable, production-ready code ✔ Strong communication & structured delivery I don’t just develop APIs - I architect scalable platforms that drive real business growth. Let’s connect to discuss your requirements and design a robust backend solution tailored to your needs.

I am a highly skilled Android Mobile, Android TV and AOSP expert with a strong background in leading teams, managing projects, and delivering high-performance Android solutions. With 12+ years of experience, I specialize in: ✅ Android App & System Development – Building and optimizing apps for mobile devices, Android TV and embedded Android solutions. ✅ AOSP Development – Customizing and optimizing Android source code, modifying system components, and integrating new features into Android frameworks. ✅ Team Leadership & Management – Leading Android teams, setting goals, managing sprints, and ensuring timely project delivery. ✅ Android System Customization – Modifying system UI, freeform windows, boot processes, and security mechanisms. ✅ Platform Development (AmLogic, Rockchip, Qualcomm, etc.) – Working on embedded Android platforms, STBs, and custom ROMs. ✅ CI/CD & Automation – Setting up build pipelines, automated testing, and release workflows for smooth deployments. 💡 Why Work With Me? 🔹 Proven track record of leading teams and delivering high-quality Android projects. 🔹 Strong problem-solving skills in debugging, performance optimization, and low-level Android development. 🔹 Experience in managing cross-functional teams, collaborating with designers, and aligning development with business goals. 🔹 Passionate about innovation, efficiency, and creating scalable Android solutions. 📩 Let’s build the future of Android together! Contact me to discuss your project.

I specialize in workflow automation and pipeline development primarily for computer graphics, video, and image processing - drawing on years of experience as a technical director at an animation studio. I'm always happy to discuss your task or project and explore solutions together. / __what_i_deliver__ - Automation of production processes, especially where the use of computer graphics is required - Tool & plugin development for 3D applications, building USD-based pipelines - Render farm setup, cloud rendering infrastructure and cost optimization - Synthetic 3d data generation, parametric modeling, Gaussian splatting - Image/video processing: custom ComfyUI workflows, gen ai image/video pipelines, ai motion capture - SaaS Full-stack dev, DevOps/FinOps, serverless GPU deployment - Blockchain apps, smart contracts dev - Reverse engineering, binary analysis, decompilation - R&D, mathematical tasks, algorithm implementation - Embedded/microcontroller programming: ESP32, STM32H7, Raspberry Pi and more / __tech_stack__ - Python, С/C++, TypeScript, Dart, GLSL - Backend: FastAPI, Node.js/Express, NestJS, MongoDB, PostgreSQL, Redis - Frontend: Qt (PySide), Svelte, React, Next.js, Flutter, Three.js, WebGL - ML/Generative: ComfyUI, PyTorch - Computer vision: OpenCV, MediaPipe, SAM, Yolo, ResNet - AI agents: LangGraph, Google ADK, Anthropic API - web3: Solidity, Hardhat, Foundry, OpenZeppelin, Dynamic.xyz, Alchemy, IPFS - Infra cloud: AWS , GCP, Hetzner, Railway, Vercel - Infra GPU cloud: Modal, Runpod, vast.ai, Koyeb - Infra Devops: IaC, Docker, K8s, Terraform, MinIO, NAS, S3 - RE: Frida, Ghidra, IL2CPP / __dcc_&_pipeline_tools__ - Blender (bpy, GeoNodes), Autodesk Maya (mel/python/OpenMaya), SideFX Houdini (hython, hscript, HDK), 3ds Max (maxscript), Unreal Engine, Foundry Nuke (incl. BlinkScript), Katana, DaVinci Resolve (incl. DCTL creation and Lua scripting), NVidia Omniverse kit, NVidia Lyra and more - Character creation automation: MetaHuman, DAZ Genesis, Faceform Wrap - Render engines: Pixar RenderMan, Maxon Redshift, Karma, Arnold, Cycles - Rendering pipeline: AWS Deadline Cloud, Pixar Tractor, Fox renderfarm - Adobe CEP and UXP extensions, ExtendScript and C++ plugins for After Effects, Premiere Pro, Photoshop, Illustrator - Project management: ShotGrid (now Autodesk Flow), FTrack, Perforce - Opensource industry: ASWF projects (ACES, OpenColorIO, OpenImageIO, OpenEXR, OSL, rez etc), OpenGL, WebGL, OpenCL, Vulkan, FFmpeg, OpenUSD ... and more. But if you've read this far, and your task is non-standard or lies at the intersection of different, not necessarily technical, fields, then I really love tackling unusual problems when it difficult to find a specialist. Write to me, I'll be glad if I can be of help.

As a Full Stack Developer, I specialize in building scalable, high-performance applications that transform complex requirements into reliable, production-ready solutions. My focus is on delivering end-to-end systems that enhance user experience, improve efficiency, and support long-term business growth. I work across web, mobile and desktop application development, including e-commerce platforms, enterprise systems, and custom software solutions. I handle both frontend and backend architecture, ensuring clean system design, strong performance, and seamless integrations. My core expertise includes C++, Python, Java, and JavaScript, along with modern frameworks such as React, Node.js, Spring Boot, and ASP.NET. I design and build robust APIs, manage relational and NoSQL databases (SQL, MongoDB), and deploy scalable systems on local Hardware or using cloud platforms like AWS and Azure. I also specialize in AI integration, including LLM-based applications, Retrieval-Augmented Generation (RAG) systems, and intelligent automation solutions that enhance product capabilities and user interaction. I enjoy solving complex technical challenges—whether it’s optimizing system performance, building AI-powered features, or designing scalable architectures. My goal is always to deliver clean, efficient, and maintainable solutions that create real impact.

A versatile Embedded Systems & IoT Expert I bring a unique blend of expertise in Embedded systems, PCB High Speed designs and IoT app development. - Embedded Systems Expert (C/C++) - STM32, Arduino, ESP32 boards and Raspberry PIs - PCB Mixed Signal and High Speed Design - FPGAs, Verilog/VHDL - Assembly Language (x86, MIPS, Arm/Thumb) - ROS Robotics, Drones, IMUs applications - Native and Cross platform BLE/IoT Mobile App development With hands-on experience in creating advanced projects like drones, robotic arms, IMU gloves and developing path planning and navigation systems utilizing depth cameras for autonomous robots, I excel at integrating cutting-edge technology to solve complex problems. My skills extend to app development for Android, iOS, and web platforms, IoT apps and Sensor Integration ensuring comprehensive solutions for diverse needs. Let's collaborate to transform your ideas into a Reality!

🥇 Technical Lead at ServReality — Ranked Top 10 in AR/VR globally by Clutch! 🚀 With 15+ years in iOS, Android, and gaming, I bring full-cycle mobile and game development experience as a 💎 Mobile Solution Architect. 🎮 Senior Unity & Unreal AR/VR Developer with 12 years in immersive game creation — this isn’t just work, it’s passion. 🎯 I specialize in crafting AR/VR-powered games and mobile apps using Unity, Unreal, and Lumberyard to build immersive, interactive experiences. Here’s what I bring to the table: ✅ Mobile App Dev: iOS (Objective-C, Swift, Xcode), Android (Java, Gradle, Android Studio) ✅ AR: ARKit, ARCore, Vuforia, Wikitude, HoloLens, Meta 2, AR.js, Moverio ✅ VR: SteamVR, Oculus, Cardboard, Windows MR, Optitrack, Dexmo ✅ Game Engines: Unity3D, Unreal Engine, Lumberyard ✅ Art: Modeling, Texturing, Visualization ✅ Core Features: Group chat, voice/video calls, file sharing, real-time messaging, backend implementation ✅ AI & ML integration ✅ UI/UX design & testing for cross-platform apps In AR/VR, I work with tools like ARKit, ARCore, SteamVR, Oculus, and HoloLens to deliver engaging environments with features like gesture control, spatial mapping, haptics, and real-time rendering. My goal is to combine technical depth with creative precision — transforming visions into standout digital experiences. #AR #VR #MR #XR #GameDevelopment #MobileDevelopment #MobileApps #iOS #Android #Unity #Unreal #Lumberyard #ARKit #ARCore #Vuforia #Wikitude #HoloLens #Meta2 #Moverio #ARJS #SteamVR #Oculus #Cardboard #WindowsMixedReality #Optitrack #Dexmo #3DModeling #GameArt #Texturing #Visualization #RealtimeMessaging #VoiceChat #VideoCalling #FileSharing #AI #ArtificialIntelligence #MachineLearning #UIUX #BackendDev #GestureRecognition #SpatialComputing #CrossPlatform #MultiplayerVR #RoomScaleVR #ARGames #VRGames #InteractiveGameplay #ImmersiveExperiences #RealTimeRendering #GamePhysics #HapticFeedback #3DUX #VRUI #ARUI #VirtualStorytelling #AugmentedReality #VirtualReality #HeadMountedDisplays #SpatialMapping ⚡️ Updated portfolio on June 24, 2026