🎯 With 8+ years of experience in developing IoT and embedded systems using ESP32, ESP8266, Raspberry Pi (2/3/4/5/Pico/Pico W), Arduino, STM32, etc. | HTTP, MQTT, CoAP | AWS IoT Core, Thingsboard, Node-Red, Home Assistant, Tasmota, Blynk, etc., along with custom dashboard integration with firmware. Python, uPython, C/C++, & javascript, I help clients build smart, connected, and scalable solutions. Project and Product development tailored to their real-world needs. 🚀 Bringing Smart Ideas to Life – Reliable, Scalable, and Cost-Effective IoT Solutions Are you seeking a skilled engineer to bring your IoT idea to life as a functional, connected product? I’m a results-driven IoT & Embedded Systems Engineer with a strong foundation in microcontroller & micro-processor programming, Bearmetal driver development, sensor integration, wireless communication, and cloud connectivity. I specialize in building high-performance IoT systems with smooth communication protocols and long-term reliability. ✅ What I Can Do For You: 🔌 Custom IoT/ Firmware development using Arduino, ESP32, Raspberry Pi, and STM32 🛠️ Custom Product Development: I have the whole solution from scratch to product deployment. 📡 Wireless protocols: MQTT, HTTP/HTTPS, WebSocket, BLE, Esp-Now, LoRa, Zigbee, etc. ⚙️ Device protocols: UART, SPI, I2C, I2S, Modbus, CANbus, Baremetal driver development, etc. 🌐 Dashboard Integration: ThingsBoard, Blynk, Firebase, Node-RED, Home Assistant, Tasmota, ESP Rainmaker, etc. 🔧 Embedded Sensor/Actuator interfacing for automation & control 🔁 OTA firmware updates, watchdog timers, and power-saving modes 🧰 Troubleshooting, optimization, and clean modular/OOP-based C/C++, Python firmware. 🛠️ Tools, Technologies & Expertise 📟 Microcontrollers & Boards ESP32, ESP8266 (NodeMCU, WROOM, WROVER) Arduino (Nano, Uno, Mega, Pro Mini, MKR1000) Raspberry Pi (2, 3, 4, 5, Pico, Pico W, Compute Modules) STM32 (Bluepill, STM32F103, STM32CubeMX/HAL) BeagleBone Black, Orange Pi, Banana Pi ATmega328P, ATTiny85, NRF52, RP2040, CH32V, PIC 💻 Programming Languages C, C++, Embedded C (bare-metal, HAL/LL) MicroPython, Python (asyncio, machine) JavaScript (Node.js for IoT, WebSocket) Shell scripting (Bash) for Linux automation JSON, YAML, INI (config formats for IoT) 📡 Communication Protocols # MQTT (public & secured brokers) # HTTP, HTTPS, WebSocket, CoAP # ESP-NOW, BLE, LoRa (RA-02, RYLR), Zigbee (CC2530, ZBBridge) # GSM/GPRS, SIM800L, NB-IoT (BG95, SIM7020), Wi-Fi # RS-232, RS-485, CANbus, Modbus RTU/TCP 🔌 Device/Peripheral Protocols # UART, SPI, I2C, I2S, OneWire, PWM, ADC, DAC # SD Card (FATFS), EEPROM/Flash handling # GPIO interrupt handling, timer/counter config # Bare-metal driver development and peripheral abstraction 🧰 Development Tools & IDEs # Arduino IDE, PlatformIO, STM32CubeIDE, ESP-IDF, VS Code, Thonny, Geany, etc. # Linux (Ubuntu/Raspberry Pi OS/Debian) CLI Tools # Git, GitHub/GitLab, Version Control for Embedded # Serial Monitors (PuTTY, TeraTerm, minicom), Logic Analyzers (Sigrok) ☁️ Cloud Platforms & Integrations # AWS IoT Core (MQTT, Shadow, Rules Engine) # ThingsBoard (CE/PE), Blynk (legacy and new), Firebase Realtime/Firestore # Node-RED (on-prem or cloud), Home Assistant (ESPHome, MQTT) # Tasmota customization (Rules, MQTT, Templates) # ESP RainMaker, Google Firebase, Azure IoT Hub 📊 Dashboards & Custom UIs # Web dashboards with HTML/CSS/JS # REST API consumption and creation. # Local dashboards using Node-RED, Grafana, InfluxDB, etc. 🔐 Security & Optimization #TLS/SSL for MQTT & HTTP # Data encryption (AES, base64, JWTs) # Memory and power optimization for low-power devices (deep sleep, watchdogs) # Fail-safe firmware design with bootloader, rollback 📦 Product Development & Hardware Integration # PCB interfacing and prototyping (breadboard to custom PCB) # Sensor calibration (temperature, humidity, motion, distance, gas, etc.) # Relay, triac, motor, servo, LED matrix, and display (OLED, LCD I2C, TFT) # Custom device firmware from scratch to OTA-ready product 🌟 Why Choose Me: 🧠 Expertise You Can Trust – Solid engineering principles and deep technical know-how 📈 Results-Driven Development – Focused on delivering working, scalable solutions ⏱️ Timely Delivery – Respect for your deadlines and project milestones 📣 Clear & Professional Communication – Regular updates, detailed reports, and zero guesswork 🔁 Post-Delivery Support – Guidance, maintenance, and iteration support available 💯 Client Satisfaction is My Top Priority 💼 Availability: 📅 Available for full-time, part-time, and long-term projects 🌍 Comfortable with clients worldwide and flexible with time zones 🤝 Long-term support, NDA-friendly, and confidential work welcomed 🚀 Let’s build something smart together – Message me today! SHAMIM HASAN Embedded Software Engineer

Senior Full-Stack Engineer with 10+ years building mobile, web, AI, desktop, and IoT applications. I help startups and enterprises ship MVPs and scale apps 2x faster, with expertise in performance, reliability, automation, and cross-platform delivery. Core Expertise • Mobile & Desktop: Android, iOS, React Native, Kotlin, Swift, Tizen, WebOS, C++, C#, Delphi • Web & Backend: Node.js, .NET, TypeScript, JavaScript, Python, Java, Go • AI & Data: LLMs (RAG pipelines, Ollama, OpenAI, Anthropic APIs), LangChain, Hugging Face, TensorFlow, PyTorch, spaCy, Scikit-learn • Automation & Orchestration: n8n, Zapier, Make (Integromat), Airflow, Monday, CI/CD pipelines • Media Processing: OpenCV, FFmpeg, real-time video/audio streaming • IoT & Devices: Bluetooth, NFC, Alexa integration, Thermal Imaging • Cloud & Enterprise: AWS, Azure, Google Cloud, Firebase, MS Graph, REST, WebSockets, SSO (SAML, Keycloak) • DevOps: Git, Docker, Jenkins, Fastlane, Visual Studio, Xcode Specialized Solutions • Real-time video/audio solutions (FFmpeg, OpenCV, WebRTC) • AI-powered apps with LangChain, Hugging Face, n8n automations, and RAG pipelines Workflow automation with n8n, Zapier, Make, Airflow • IoT device integration (Bluetooth, NFC, Alexa) • Secure enterprise integrations (MS Teams, SSO, Keycloak) • Scalable backends & APIs (Node.js, .NET, Firebase, GraphQL)

Most MVPs built on low-code/no-code look good in a demo — but collapse when real users or investors show up. That’s where I come in. I’m Hussain, a Top-Rated Plus freelancer & agency founder with 8+ years of experience turning fragile prototypes into production-ready SaaS platforms, AI agents, mobile apps, and cloud-native systems you can scale, monetize, and raise capital on. Not just code — but solutions that work in production. 🛠 What I Build ✅ AI SaaS Development – MVPs to investor-grade systems with real DBs, APIs & infra ✅ Agentic AI & Automations – RAG pipelines, n8n workflows, custom LLM integrations ✅ Mobile Apps – React Native, Flutter, MAUI with Supabase/AWS-backed production APIs ✅ SaaS Foundations – auth, payments (Stripe), subscriptions, secure cloud deployment ✅ API Integrations – REST, GraphQL, OpenAI, Google, LinkedIn, Zoom, Stripe & more ✅ Database Design & Optimization – PostgreSQL (pgvector, PostGIS), MongoDB, MySQL ✅ Cloud & Server Architecture – AWS, Supabase, Azure, GCP, Dockerized deployments ⭐ Why Clients Choose Me 🔹 Deep technical expertise across SaaS, AI automation, and scalable cloud systems 🔹 Startup-friendly: I know what VCs and investors look for in a product demo 🔹 Clear communication: no jargon, just transparent progress & measurable results 🔹 Proven impact: helped startups secure funding, scale to 100K+ users, and hit $1M ARR 📈 Case Study A seed-stage SaaS startup built a no-code MVP that collapsed under 50 concurrent users. I redesigned the architecture with Next.js + Supabase + RAG AI Agents, optimized DB queries, and added monitoring & caching. Result? 30× scale capacity, investor readiness, and a successful funding round. 💬 Client Testimonials ⭐⭐⭐⭐⭐ “Hussain was knowledgeable and proficient across technologies. Great communication and exact execution.” ⭐⭐⭐⭐⭐ “A highly skilled developer. Delivers before schedule with reliable estimates. We’ll be working with Hussain on more AI SaaS projects.” 👥 Who I Work With 🔹 Startups turning MVPs into real, scalable products 🔹 SaaS companies building AI-driven features & automation 🔹 Agencies needing a fractional CTO / technical partner to extend their team 🤝 Let’s Build Together Need a production-ready SaaS, AI Agent, Automation, or Mobile App — fast? Click Invite to Job / Hire Now and let’s architect your future-proof system. 🔑 Keywords: AI SaaS, Agentic AI, RAG pipelines, mobile app development, Supabase, Next.js, React Native, workflow automation, API integrations, scalable backend, SaaS engineer, cloud deployment, database optimization

I'm a developer with over 15 years development experience in many fields, including computer vision and deep learning solution, full-stack development, Python data process, web service application, LLM application and so on. With rich software architect experience, I could also help you on software architecture, building tech stack at project start phase. With rich software solution experience, I could analyze requirement document and provide necessary project plan, feature design and so on. • skill set include: Python, C/C++/C#, java script, vue.js, PHP, java, web service • experienced in computer vision, deep learning training & deployment solution • experienced in building big data solution in cloud computing environment • experienced in building LLM related project, like ChatGPT integration, finetune and API development • good at software performance optimization

Core Strengths: Multi-platform full-stack development (C++, JavaScript, Swift, Kotlin, Solidity) 3D/2D rendering engine architecture (OpenGL, Vulkan, Metal) 0-to-1 product innovation with multiple patents Proven expertise in building and leading teams at top-tier companies (Huawei, Didi, Baidu, Tencent) Performance optimization and scalability Technical Skills Programming Languages: C++, JavaScript/Typescript, Swift, Kotlin, Solidity, Python  Frontend: Vue.js, React, WebGL, HTML5/CSS3, MySQL  Mobile: iOS (Metal), Android, HarmonyOS (ArkTS)  Graphics: OpenGL, Vulkan, Metal, Shades Programming, 3D Engine Architecture, AR/VR  AI/ML: TensorFlow, PyTorch, XGBoost, On-Device Inference Optimization, Agent, RAG  Blockchain: Solidity Smart Contracts, DApp Development, Cross-Chain Technology, PoS/PoW 

Senior Full Stack .NET Developer with 𝟖+ 𝐲𝐞𝐚𝐫𝐬 of experience delivering scalable, secure, and high-performance enterprise applications, 𝐄𝐑𝐏 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐚𝐧𝐝 𝐜𝐥𝐨𝐮𝐝-𝐛𝐚𝐬𝐞𝐝 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 for global clients. I specialise in 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞, 𝐂#, 𝐕𝐁.𝐍𝐄𝐓, .𝐍𝐄𝐓 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤, 𝐚𝐧𝐝 .𝐍𝐄𝐓 𝟔/𝟕/𝟖/9, building end-to-end solutions across 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, 𝐝𝐞𝐬𝐤𝐭𝐨𝐩 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐀𝐏𝐈𝐬, 𝐚𝐧𝐝 𝐜𝐥𝐨𝐮𝐝-𝐧𝐚𝐭𝐢𝐯𝐞 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞𝐬. I combine strong backend engineering with modern frontend development using 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 𝐚𝐧𝐝 𝐀𝐧𝐠𝐮𝐥𝐚𝐫𝐉𝐒 to deliver responsive, user-friendly, and business-driven applications. I have worked across multiple enterprise domains, including 𝐅𝐢𝐧𝐚𝐧𝐜𝐞, 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞, 𝐈𝐧𝐬𝐮𝐫𝐚𝐧𝐜𝐞, 𝐌𝐚𝐧𝐮𝐟𝐚𝐜𝐭𝐮𝐫𝐢𝐧𝐠, 𝐑𝐞𝐭𝐚𝐢𝐥, 𝐋𝐨𝐠𝐢𝐬𝐭𝐢𝐜𝐬, 𝐚𝐧𝐝 𝐓𝐞𝐥𝐞𝐜𝐨𝐦, building systems that handle complex business workflows, large datasets, and mission-critical operations. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈 𝐇𝐚𝐯𝐞 𝐁𝐮𝐢𝐥𝐭: ⦁ Enterprise ERP systems (HR, Payroll, Inventory, Finance modules) ⦁ SaaS-based multi-tenant web applications ⦁ Banking & Finance management systems ⦁ Healthcare management systems (patient, appointment, billing modules) ⦁ CRM and customer management platforms ⦁ Manufacturing & supply chain tracking systems ⦁ Real-time dashboards and reporting systems ⦁ Legacy monolithic application modernization to microservices ⦁ Windows desktop applications for enterprise operations (WPF, WinForms) ⦁ RESTful APIs and microservices-based backend systems 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ⦁ ASP.NET Core, ASP.NET MVC, Web API, .NET Framework ⦁ C#, VB.NET, LINQ, Entity Framework Core ⦁ React.js, AngularJS, JavaScript, TypeScript ⦁ Windows Desktop Apps (WPF, WinForms) ⦁ Microservices Architecture, REST APIs, SOAP Services ⦁ SQL Server, Oracle Database Integration ⦁ Azure App Services, Azure Functions, Azure DevOps ⦁ AWS Deployment & Cloud Infrastructure ⦁ Identity & Security (JWT, OAuth, Role-based access control) ⦁ CI/CD pipelines, Git, Agile development 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: ⦁ Microsoft Azure (App Services, Functions, API Management, Service Bus) ⦁ AWS (EC2, S3, deployment & hosting solutions) ⦁ CI/CD automation using Azure DevOps & GitHub Actions ⦁ Performance tuning, monitoring, and scalability optimization 𝐒𝐭𝐫𝐞𝐧𝐠𝐭𝐡𝐬: ⦁ Strong expertise in enterprise-grade system architecture ⦁ Experience in large-scale ERP & SaaS product development ⦁ Skilled in modernizing legacy systems into cloud-native solutions ⦁ Strong problem-solving and system design capabilities ⦁ Ability to work independently or in agile team environments I focus on building scalable, maintainable, and business-driven software solutions that align with client goals and long-term growth. Clients value my ability to combine deep technical expertise with practical business understanding. 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐡𝐨𝐰 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐛𝐮𝐢𝐥𝐝 𝐨𝐫 𝐬𝐜𝐚𝐥𝐞 𝐲𝐨𝐮𝐫 𝐬𝐲𝐬𝐭𝐞𝐦 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭𝐥𝐲.

Most hardware projects don't fail because of bad ideas. They fail in the messy space between "working prototype" and "shipping product." That's where I've spent the last 14 years — across 350+ projects and 50+ products now in mass production. Hundred clients have come back for a second project. Here's what's behind that number. I take products from napkin sketch to factory floor — designing the PCBs, writing the firmware, and optimizing the BOMs. That DFM work alone typically saves clients 20–30% on production costs. One client shipped at 12mA after coming to me with a prototype drawing 800mA in sleep mode. That's the difference between a redesign and a launch. The firmware I write runs 24/7 in industrial environments where a crash at 2 AM means someone's driving to a job site. I build for reliability first: FreeRTOS or bare-metal on STM32, ESP32, nRF52/53, RP2040, PIC, and Atmel. Connectivity — MQTT, BLE, Wi-Fi, LoRa, or cellular — gets chosen for the use case, not the trend. On the hardware side: multi-layer PCBs, proper signal integrity, IPC-compliant layouts (2221, 7351) in Altium and KiCad, built for manufacturability from day one. When the project calls for it, I wire the full IoT stack — AWS IoT Core, edge AI/ML inference, secure OTA, and fleet health monitoring. Top-Rated Plus. 100% Job Success Score. If you need an engineer who thinks in yield rates, field reliability, and unit economics — hit "Message" or "Invite to Job." Let's get your product out the door.

Hello! I’m Asher, a Senior Full-Stack Engineer with 8+ years of experience delivering scalable, high-performance web applications across finance, logistics, healthcare, and SaaS. I specialize in building enterprise-grade solutions, migrating legacy systems, and providing long-term application support. 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼 𝗕𝗲𝘀𝘁 Full-Stack Web Development: ASP .NET Core, Blazor, MVC, Angular, React, Razor Pages Backend & API Engineering: RESTful APIs, SignalR, Clean Architecture, Microservices Database Optimization: SQL Server, Entity Framework Core, Query & Stored Procedure Optimization Legacy System Migration: Modernizing Web Forms and older .NET apps to ASP .NET Core with modern frontends DevOps & Deployment: Azure, AWS, IIS, Docker, CI/CD Pipelines 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? Proven Expertise: Delivered 20+ .NET projects with measurable results Scalable Solutions: Applications designed to grow with your business Client-Centric Approach: Clear communication, timely delivery, dedicated support Future-Proof Development: Clean, maintainable, and well-documented code Continuous Learning: Staying ahead with the latest technologies Ideal Clients & Projects Teams seeking a full-stack lead bridging C# and modern JS frameworks Companies with existing .NET apps needing frontend refresh or full-stack migration Projects requiring long-term maintenance and ownership Clients seeking predictable, high-quality delivery over low-cost short-term work 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: .NET Developer Upwork .NET Development Upwork ASP.NET Developer Upwork ASP.NET Core Developer Upwork C# Developer Upwork .NET Web Development Upwork .NET Application Development Upwork .NET Software Developer Upwork .NET API Development Upwork .NET Backend Developer Upwork .NET Full Stack Developer Upwork ASP.NET MVC Developer Upwork .NET Core Developer Upwork .NET Microservices Developer .NET REST API Developer .NET Web API Development .NET Enterprise Application Development .NET Database Development .NET SQL Server Developer .NET Azure Developer .NET Cloud Application Development .NET Integration Developer .NET Performance Optimization .NET Maintenance and Support .NET Migration & Upgrade Services 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Full-Stack .NET Developer, Backend .NET Developer, ASP .NET Core, C#, ASP .NET MVC, Web API, RESTful APIs, Microservices, Clean Architecture, SignalR, Blazor Server, Blazor WebAssembly, Razor Pages, Angular, React, Responsive Web Design, HTML5, CSS3, JavaScript, Bootstrap, SQL Server, Amazon SP-API, SOAP API, Query Optimization, Stored Procedures, Database Optimization, Entity Framework Core, Database Migration, Legacy System Migration, Web Forms Migration, Performance Optimization, Azure, Azure DevOps, AWS, CI/CD Pipelines, Docker, IIS, Agile Development 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 Part-time or full-time contracts Reliable US/EU timezone overlap 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗘𝘅𝘁𝗿𝗮𝗼𝗿𝗱𝗶𝗻𝗮𝗿𝘆! Send me your project details, and I’ll reply in less than 1 hour with a clear plan and honest recommendations. Ready to accelerate your roadmap? 𝐂𝐥𝐢𝐜𝐤 “𝐈𝐧𝐯𝐢𝐭𝐞” or message me with a quick brief, and I’ll outline a solution within 24 h.

I'm a Full Stack Developer and .NET Developer with 10+ years building web applications that businesses actually run on. I take an idea and ship it — front end, back end, database, deployment — and I've done it for products still serving customers a decade later. ✦ WHAT I DO BEST My core stack is .NET and C#. As a .NET Developer I build secure, scalable back ends with .NET Core and ASP.NET Core, expose them as clean ASP.NET Web APIs (REST), and back them with Entity Framework and SQL Server, PostgreSQL. As a Full Stack Developer I pair those APIs with responsive front ends in Angular, React, or Blazor, then deploy and scale on Azure with Azure DevOps, Docker, and CI/CD. When a product needs AI, I wire proven models — often through a thin Python layer — into the application without breaking what already works. And when a templated WordPress or Shopify build has hit its ceiling, teams bring me in to rebuild it as a custom .NET web application that can actually grow. ✦ PROOF OF WORK Longevity is the point. I once took a rough idea from an automotive client and built it into an e-commerce platform that has served customers for nearly 15 years and still runs today. As the lead .NET Developer on Launch Control, a real-estate SaaS, I refactored the core and made the system 50x faster. I also built SiftScore, an AI-powered talent-acquisition platform that uses the OpenAI API to source and score large datasets. Across fintech, real-estate, and healthcare I've owned the full lifecycle as a Full Stack Developer: requirements, architecture, build, go-live. 🚀 SaaS MVP (From Idea → Production) When a client starts from a rough idea, I take it the full way: requirements, architecture, prototyping, build, and go-live on Azure. As a Full Stack Developer I've shipped .NET SaaS MVPs for fintech, real-estate, and conveyancing platforms — clean, maintainable code with the scalability and monitoring to grow once real customers arrive. ✦ AI Integration for Existing Products I add AI features when a product actually needs them. The fastest, most cost-efficient path is usually integrating a proven model — OpenAI, Claude, or Gemini, often through a thin Python layer — rather than training your own. I add chatbots, automation, and smart search to existing web apps. Most AI features fail not because of the model but because the surrounding .NET architecture wasn't built to support it — and that's where a senior Full Stack Developer earns their keep. ⚙️ Modernizing Existing .NET Systems - without the rewrite If you have a .NET or C# application that needs work, I optimize performance, refactor legacy code, upgrade aging ASP.NET back ends, and migrate data access to Entity Framework Core — refactored against SOLID principles, without freezing feature work. Stuck on an old ASP.NET WebForms app? You don't have to gamble on a big-bang rewrite. As a .NET Developer I migrated a WebForms spare-parts store — 20M+ products across 100+ suppliers — to ASP.NET MVC by running both side by side in one solution, so the business kept selling while the modernization happened underneath it. The same incremental approach moves teams off PHP, Laravel, or legacy WordPress builds and onto a maintainable .NET stack: ship value continuously, retire old code gradually, never go dark. ✦ Legacy .NET project modernization Old code isn't the enemy — downtime is. As a .NET Developer, I modernize legacy ASP.NET and ASP.NET MVC systems by introducing a clean API layer, migrating data access to Entity Framework Core, and refactoring against SOLID principles, all without freezing feature work. As a Full Stack Developer, I migrate the application page by page behind a feature flag, so new and old run together in production and you can switch any screen over — or roll it back instantly — without disrupting users. Whether it's an ASP.NET MVC application that has grown brittle or a WebForms system that needs a path forward, I find the route that lowers risk: incremental, tested, and reversible at every step. ✦ ENTERPRISE-GRADE .NET ARCHITECTURE My work as a Full Stack Developer goes deeper than features. On a large enterprise fintech platform built on microservices, as a Full Stack Developer I designed how the team builds — onboarding developers, setting architectural standards, and structuring a clean, maintainable .NET codebase that scales. As a .NET Developer with a decade across .NET Framework, .NET Core, ASP.NET, and ASP.NET MVC, plus an M.Sc. in Applied Mathematics behind the design decisions, means I build systems meant to last years, not quarters. I focus on web rather than native mobile apps in Flutter or React Native; on the .NET side I also ship cross-platform with .NET MAUI. I'm a web developer — my C# and .NET expertise powers web applications. ✦ HOW WE'LL WORK If you need a Full Stack Developer or .NET Developer who can take something from rough idea to production — and keep it running for years — let's talk about the fastest path to shipping it.

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.