With 8+ years of extensive experience in software development, I specialize in building high performance, scalable, and user centric WEB and DESKTOP APPLICATIONS using modern technologies. My core expertise lies in Microsoft based development (.NET, C#, ASP.NET Core/MVC, Blazor), combined with modern frontend frameworks like React, Angular, and mapping/GIS tools including ArcGIS. I also have strong proficiency in working with a variety of databases, including SQL Server, PostgreSQL, Supabase, MySQL, and MongoDB; ensuring robust data modeling, performance tuning, and secure data handling across applications. Whether you need an enterprise-grade backend, interactive frontend interfaces, geospatial data integration, or a reliable full-stack partner, I bring the right blend of technical skill, professionalism, and client focused service. - Why Clients Hire Me: A. Proven Track Record – Top Rated, $100K+ earnings, and 90%+ long-term client retention. B. Strict Deadline Adherence – I consistently deliver on time, without compromising quality. C. Scalable, Clean Code – Maintainable, modular codebase following best practices. D. Exceptional Communication – Transparent, responsive, and proactive collaboration. - Technical Expertise: a. Backend: C#, ASP.NET Core/MVC, Web API, Node.js, Express.js, Blazor, OWIN, IIS b. Frontend: React, Angular, Razor, Next.js, Vue.js, Typescript, Bootstrap, Tailwind CSS, Kendo UI, jQuery c. GIS/Mapping: ArcGIS JavaScript API, ArcGIS REST services integration d. Databases: SQL Server, PostgreSQL, MySQL, Supabase, MongoDB e. Cloud/DevOps: Azure DevOps, AWS (S3, EC2, Lambda), GitHub Actions, Docker f. APIs & Integrations: REST, GraphQL, SOAP/WSDL, SSO/Auth systems Primary Skills (Core Stack): - Full Stack Developer - .NET Developer - ASP.NET Core Developer - C# Backend Developer - React.js Developer - Angular Developer - Blazor Developer - MAUI App Developer - .NET MAUI Developer - Web API Developer - Entity Framework Core - Razor Pages - SignalR Developer Frontend Technologies: - JavaScript Developer - TypeScript Developer - HTML5 / CSS3 / SCSS - Responsive Web Design - Tailwind CSS - Bootstrap - React Hooks - Angular Material - RxJS - Material UI (MUI) Backend / Server-Side - ASP.NET Core Web API - RESTful API Development - Microservices Architecture - Clean Architecture - Dependency Injection - Middleware in .NET - LINQ / EF Core - SQL Server / PostgreSQL / MySQL - IdentityServer / JWT Authentication Version Control & Tools: - Git / GitHub / GitLab / Bitbucket - Azure DevOps Pipelines - Jira / Trello / ClickUp - Visual Studio 2022 - Postman / Swagger - Figma to React/Angular Testing & Quality: - Unit Testing in .NET (xUnit, MSTest) - Jest for React - Cypress / Selenium - Playwright - Code Review & Refactoring Cloud & DevOps: - Azure Developer - AWS Developer - Azure App Services - Azure Functions - AWS Lambda - CI/CD (GitHub Actions, Azure DevOps) - Docker - Kubernetes - Cloudflare I work with different technologies and like complex and long-term projects, my experience allows me to solve complex problems related to the design of the project during the negotiation phase. I prefer long-term cooperation with the client and therefore try to provide maximum comfort and quality.

I’m a senior .NET engineer with 10+ years of experience building scalable backend systems and modern web applications using ASP.NET Core and React. I design clean architectures, implement REST APIs, and build production-ready SaaS platforms. I also integrate AI capabilities, including OpenAI-based agents, RAG pipelines, and intelligent automation features into real-world products. On most projects, I take full ownership of backend development - from system design to production-ready delivery. In most projects, I am responsible for: • Design scalable backend architecture • Build secure ASP.NET Core Web APIs • Implement business logic and domain-driven structures • Integrate AI capabilities (OpenAI API, RAG, vector search, AI agents) • Optimize SQL Server performance • Structure systems using Clean Architecture and SOLID principles • Modernize and refactor legacy .NET applications 🔹 What You Get Working With Me • Clear technical planning before development begins • Clean, maintainable C# code • Scalable REST APIs designed for growth • Well-structured backend architecture • Reliable AI integration when needed • Transparent communication and predictable delivery I build backend systems that remain stable, extensible, and ready for future evolution - including AI-powered features. 🔹 Core Expertise Backend & Architecture: • C# • .NET Core / .NET 6 / .NET 7 / .NET 8 • ASP.NET Core, ASP.NET Boilerplate, ASP.NET Zero, ABP IO • REST API / Web API development • Entity Framework Core • SQL Server • Microservices architecture • Clean Architecture (SOLID, DDD) • Performance optimization • Legacy system modernization AI & Intelligent Systems: • OpenAI API & AI agents • RAG pipelines & vector databases • Semantic Kernel & tool orchestration • Embedding AI features into production SaaS platforms Frontend (When Required): • React • Angular • Blazor • JavaScript / TypeScript (My primary strength is backend and system architecture.) Additional Experience: • SaaS platform development • Third-party API integrations (Stripe, Google, Amazon, etc.) • Data modeling and database optimization • Unit testing (NUnit, xUnit) • Refactoring and architecture improvements 🔹 Best Fit Projects • Building scalable backend systems from scratch • Developing ASP.NET Core Web APIs • AI integration into existing products • SaaS platform architecture • Migrating legacy applications to .NET Core • Long-term product development partnerships If you're building a serious product and need a Senior .NET developer who can design robust backend architecture and integrate modern AI capabilities - I’d be glad to help.

Want to actually make money from your game and turn your idea into something that brings real value, not just another app that gets ignored? That’s exactly what this is about! Games built here consistently reach 100K+ to 500K+ downloads and generate real revenue for clients, because the focus is not just on development, but on gameplay, retention, and monetization from day one. Most games technically “work” but fail at gameplay, player experience, and long-term engagement. The focus here is simple, not just mobile game development or video game development, but building a game that people enjoy playing and keep coming back to. Everything starts with how the game feels. Before scaling, the core gameplay is shaped - how players interact with the game - how levels are structured - how progression works - and why someone would continue playing after the first session Once that is clear, the game is built in Unity with a strong balance between game design and game development, making sure mechanics, UI/UX, animation, and overall flow work together as one system. From there, the focus shifts to what actually drives growth - performance across Android and iOS devices - smooth gameplay and responsiveness - and systems like rewards, leaderboards, and monetization that support long-term engagement This naturally includes working with Unity, C#, mobile game systems, gameplay mechanics, 2D and 3D environments, animation, UI/UX, and optimization, but always with the goal of building a complete product, not just features. Because in the end - a successful game is not just about launching it’s about - players staying - coming back - and spending time (and money) inside the game If you want to build a game that actually performs - message me, and let’s turn your idea into a real money making machine!

$1M+ earned on Upwork, placing me among a very small percentage of freelancers on the platform. 👋 Hello! Ready to collaborate with a proven iOS developer? Let’s talk. Send me a message and let’s bring your app to life.📨 Are you looking for a Senior iOS Developer who delivers high-performance, scalable, and user-focused native iOS applications? As a seasoned iOS developer, I specialize in transforming product ideas into robust mobile solutions using Swift and Objective-C - leveraging the full native iOS stack to deliver seamless user experiences. As a dedicated iOS developer with 15+ years of experience, I’ve completed 700+ iOS projects and logged thousands of hours purely in native app development. My apps have achieved a 70% reduction in crash rates, 50% boost in performance, and up to 60% higher user retention. I handle the full iOS development lifecycle-from ideation and architecture to App Store release and ongoing optimization-with proven results. 🏆 Why partner with me as your iOS developer? ✔️ Deep iOS ecosystem knowledge: Swift, Objective-C, UIKit, SwiftUI, Combine ✔️ Reliable delivery: Completed complex iOS projects for startups, enterprises, and niche industries ✔️ Full-cycle mobile iOS development: From UI/UX implementation to backend integrations and business logic ✔️ Performance-oriented: iOS performance tuning, memory optimization, and profiling for apps that run 35% faster and use 45% less memory ✔️ Modern development workflow: CI/CD pipelines (Fastlane, GitHub Actions), CocoaPods/SPM, architectural best practices (MVVM, VIPER) ✔️ Feature integration expertise: Leveraging Apple SDKs and third-party iOS libraries to accelerate delivery and improve stability 🚀 My core iOS developer services: 📌 Native iOS app development 🔹 Custom iOS development using Swift, Objective-C, and Objective-C++ 🔹 Expertise in key iOS frameworks: UIKit, SwiftUI, Core Data, Combine, MapKit, Core Location, AVFoundation 🔹 Responsive UI design for all iOS devices (iPhone, iPad) 🔹 Alignment with Apple’s Human Interface Guidelines (HIG) 🔹 Helped clients increase App Store ratings by over 1.5 stars through UX-focused iOS updates 📌 Advanced native iOS features 🔹 ARKit and SceneKit for augmented reality 🔹 Core ML and Vision for intelligent iOS features 🔹 BLE, HealthKit, PassKit, Core Motion for device integration 🔹 Real-time communication: Twilio, Sendbird, APNS 🔹 Metal and Core Graphics for high-performance iOS graphics 🔹 GameKit, SpriteKit, ReplayKit for gaming-related iOS apps 📌 Data management and iOS backend integration 🔹 Core Data, Realm, SQLite, CloudKit, Firebase Firestore for persistent iOS storage 🔹 Native networking: URLSession, Alamofire 🔹 REST, GraphQL, and AWS integrations 🔹 Offline support and sync strategies - optimized for poor connectivity environments 📌 Cross-platform awareness 🔹 Flutter and Dart experience for clients needing broader support (iOS-first focus) 📌 Testing, optimization, and iOS deployment 🔹 XCTest, Instruments, UI testing, network debugging 🔹 Automated deployments using Fastlane, Xcode Cloud 🔹 Efficient iOS project structuring using Tuist and modularized architecture 🔹 TestFlight and App Store release management handled end-to-end 📌 Third-party SDKs and analytics in iOS apps 🔹 Firebase, Flurry, Google Analytics integration 🔹 Ad SDKs (AdMob, Google Ads, MKStoreKit) for monetization 🔹 Social integrations and custom SDK usage to enhance your iOS app’s feature set 🔹 Increased monetization efficiency up to 80% with smart ad integration and IAP workflows 💡 My focus as an iOS developer 🔹 Building clean, scalable, and future-proof iOS architectures 🔹 Optimizing rendering and interaction performance for real-world use 🔹 Minimizing crash rates and post-launch bug reports 🔹 Implementing pixel-perfect UIs from Figma, Sketch, or Adobe XD 🔹 Writing testable, maintainable iOS code that reduces technical debt 🌟 Industries I’ve delivered iOS apps for 🔹 Social networking 🔹 Mobile banking and fintech 🔹 Health and fitness (Health Kit) 🔹 Retail and e-commerce 🔹 GPS and navigation (Map Kit, Core Location) 🔹 Smart devices and IoT 🔹 Entertainment platforms 🔹 iOS gaming (SpriteKit, Unity, GameKit) 🚀 Let’s build your iOS app right - from the first line of code to the final push to App Store.

Create leverage. That is what I do. I build high-performance, secure, reliable software that helps founders and businesses launch and scale with confidence. Since 2010, I have helped founders and established companies turn ambitious ideas, messy workflows, and broken systems into serious software products. Obsession with quality, complete transparency, and no hand-holding - that is how I turn software from a development expense into a business asset. I am an excellent fit if: - You are a founder with a product idea and need more than “someone to code it.” I can help you refine the concept, define the right MVP, validate technical assumptions, choose the right architecture, build the first production-ready version, and support you after launch as the product grows. - You are an established business looking to build a new platform, automate operations, replace spreadsheets, improve workflows, modernize legacy software, scale an existing product, or rescue a bad build. I am especially valuable when the project is too important to gamble on cheap execution, unclear ownership, fragile architecture, or developers who only wait for task lists. I have spent 15+ years building software where failure is expensive, across product types, workflows, and industries including SaaS platforms, AI/RAG systems, internal tools, dashboards, CRM/ERP/POS systems, logistics platforms, marketplaces, real estate software, e-commerce, FinTech, EdTech, HealthTech, data analytics, travel, hospitality, and regulated sports betting The value of that experience is not just knowing different industries. It is knowing the patterns behind them: workflows, permissions, payments, reporting, integrations, data integrity, performance, edge cases, and the business logic that quietly decides whether a product becomes scalable or painful. I personally lead architecture, planning, communication, and delivery. When a project needs more capacity, I bring in my senior team to provide high-level technical ownership and reliable execution. Whether you are a non-technical founder, an operations-heavy business, or a technical team that needs senior delivery support, I will communicate at the right level: clear when needed, technical when useful, and always focused on decisions that move the project forward. I am based in Turkey and regularly work with US, UK, Canadian, European, and Australian clients. I work EST hours with reasonable PST overlap, so communication across time zones is smooth. Don’t settle for mediocre. In a world of ruthless competition, make me your unfair advantage. Send me a message today, and I will map our next steps.

Expert Desktope Developer (Delphi, Pascal, C, C++, Assembler) I'm looking for conscientious and helpful people, with which the work becomes a pleasure.

With over a decade of experience, I have built complete connected hardware products - from PCB design and firmware to mobile apps and cloud infrastructure. Most teams build the software. We build the entire product. My name is Alex Polchert, co-founder at Imajine. Our team delivers end-to-end IoT and hardware development, from the first circuit board prototype all the way through to the cloud platform and mobile app that connects to it. Our work is used by millions of users across the U.S. 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 & 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 End-to-end hardware prototype development: CAD design, PCB manufacturing, component sourcing and testing, 3D-printed enclosures Firmware development for ESP32, Arduino, ESP8266 and custom microcontrollers Sensor sourcing, evaluation and integration: audio, PPG, ECG, motion, temperature, gas, and more Embedded audio and signal processing for real-time detection and alerts BOM creation, component sourcing and manufacturing coordination OTA firmware updates and device provisioning Bluetooth Low Energy and WiFi connectivity and commissioning Technologies: ESP32, Arduino, ESP8266, C/C++, MQTT, BLE, AWS IoT Core, GCP IoT 𝗜𝗼𝗧 𝗖𝗹𝗼𝘂𝗱 & 𝗠𝗼𝗯𝗶𝗹𝗲 IoT cloud infrastructure setup: device provisioning, MQTT protocol, real-time data processing, OTA updates Mobile app development integrated with hardware libraries for Bluetooth and WiFi connection Web-based dashboards for real-time data display, alerts, device management and analytics Multi-role platforms connecting device installers, business admins and end users Custom AI/ML algorithms for device data interpretation and predictive alerts Technologies: AWS IoT Core, GCP, Node.js, Nest.js, Next.js, React.js, React Native, MongoDB, MySQL, Firebase, Twilio 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗠𝗲𝗱𝗶𝗰𝗮𝗹 𝗜𝗼𝗧 Medical wearable device development: sensor integration, firmware, prototype to production Remote patient monitoring systems with real-time hospital web dashboards Telehealth and telemedicine platform development: video appointments, e-prescriptions, lab results HIPAA-compliant cloud infrastructure and data management Electronic Health Record and EMR system development Healthcare IoT: wearable devices, cloud infrastructure, mobile apps and clinical dashboards Technologies: HIPAA, FHIR, AWS Cognito, Vonage, Cronofy, Node.js, React.js, React Native, MySQL, MongoDB 𝗔𝗜/𝗠𝗟 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ChatGPT, OpenAI, and LLM-based web and mobile applications AI-based CRMs and sales automation Custom niche generative AI algorithms and integrations Computer vision, signal processing and real-time detection algorithms Data science and custom algorithm development Technologies: PyTorch, Python, Scikit-learn, Hugging Face, AWS SageMaker, BigML 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Custom marketplace development with Stripe Connect: KYC, payouts, business commission logic, identity verification Custom CRM development: analytics, KPI dashboards, PDF generation, email and SMS integrations Real estate platforms, social networks, fintech apps and SaaS products Multi-vendor and multi-role platforms serving millions of users Technologies: Stripe Connect, React.js, Next.js, Node.js, Nest.js, Vue.js, MongoDB, MySQL, DynamoDB, AWS, GCP, Firebase Whether you are building a hardware product from scratch, adding a connected app to an existing device, or scaling a software platform - our initial consultation is always free and no strings attached. Are you available for a quick chat to discuss your project?

I’m Muhammad Haseeb, Full Stack .NET Architect with 10+ years building scalable multi-tenant SaaS platforms and RAG AI chatbots using ASP.NET Core, React, Node.js, and LangChain. 🚀 SaaS MVP to Production: Multi-tenant apps, Stripe subscription systems, 10K+ user scale (ASP.NET Core, Next.js, PostgreSQL). 🤖 AI Solutions: Custom RAG chatbots (OpenAI, Azure OpenAI), AI workflow automation for business data. 💻 Tech Stack: ASP.NET Core, C#, React, Angular, TypeScript, FastAPI, Docker. Clients choose me for production-ready code, fast delivery, and real SaaS scaling experience. Let's build your AI-powered SaaS—message me!

If your .NET project is stalled or your cloud bill keeps climbing, you're in the right place. I'm a full-stack developer with 12+ years of experience building SaaS platforms, fintech systems, and enterprise applications using .NET, Angular, React, Azure, and modern cloud technologies. $90K+ earned on Upwork, 100% Job Success, Top Rated Plus. I've migrated legacy .NET systems to modern architectures and cut infrastructure costs by up to 30% along the way. What I build: - ASP.NET Core web apps and REST APIs - Angular, React.js, TypeScript, Next.js - Blazor and Angular frontends - AI features built into .NET apps using Azure OpenAI and Copilot - SaaS platforms and enterprise dashboards - Legacy modernization from .NET Framework to .NET Core - DevOps pipelines on GitHub Actions, Azure DevOps, Docker I use AI-assisted workflows (Claude Code, Cursor, agentic tooling) to debug faster and ship sooner, without cutting corners on code quality. I work across fintech, SaaS, e-commerce, logistics, and healthcare. Send me your requirements and I'll suggest the cleanest technical approach.

🎮Need polished 3D animation or a Unity game that doesn’t feel like it was assembled during a coffee emergency? I help turn game ideas, scripts, storyboards, references, products, and half-built Unity projects into polished 3D animations, playable game experiences, cinematic visuals, and game-ready assets. My strongest areas are 3D Animation and Unity Game Development, backed by many 5-star Upwork reviews. I also work with Unreal Engine for cinematic scenes, real-time environments, and visual production, with 5-star client feedback as well. What I can help with: 🎥 3D Animation Product animations, game trailers, cinematic videos, character animation, explainer videos, technical visuals, and promotional content. 🎮Unity Game Development Unity 3D games, gameplay prototypes, game mechanics, mobile/PC builds, UI setup, level design, bug fixing, optimization, and interactive experiences. 🧱 Game-Ready Assets Characters, props, environments, textures, PBR materials, optimized models, UVs, retopology, and Unity/Unreal-ready assets. 🧩Unreal Engine Support Real-time scenes, cinematic environments, lighting, materials, Blueprints, walkthroughs, and visual production. 🎬Cinematics & Visual Production Game trailers, product videos, camera animation, lighting, rendering, scene composition, editing, and final video output. 𝐓𝐨𝐨𝐥𝐬 𝐈 𝐮𝐬𝐞: 𝐔𝐧𝐢𝐭𝐲, 𝐔𝐧𝐫𝐞𝐚𝐥 𝐄𝐧𝐠𝐢𝐧𝐞, 𝐁𝐥𝐞𝐧𝐝𝐞𝐫, 𝐌𝐚𝐲𝐚, 𝟑𝐝𝐬 𝐌𝐚𝐱, 𝐙𝐁𝐫𝐮𝐬𝐡, 𝐒𝐮𝐛𝐬𝐭𝐚𝐧𝐜𝐞 𝐏𝐚𝐢𝐧𝐭𝐞𝐫, 𝐀𝐟𝐭𝐞𝐫 𝐄𝐟𝐟𝐞𝐜𝐭𝐬, 𝐏𝐫𝐞𝐦𝐢𝐞𝐫𝐞 𝐏𝐫𝐨, 𝐏𝐡𝐨𝐭𝐨𝐬𝐡𝐨𝐩, 𝐕-𝐑𝐚𝐲, 𝐂𝐨𝐫𝐨𝐧𝐚, 𝐚𝐧𝐝 𝐓𝐰𝐢𝐧𝐦𝐨𝐭𝐢𝐨𝐧. I am not here to just “make a model,” “animate something,” or deliver a file that only looks good from one camera angle. I help shape the final experience so it looks clean, feels polished, performs well, and is actually usable for your game, trailer, product launch, campaign, pitch, or interactive project. Have a rough idea, half-built Unity project, or 3D animation concept that needs direction? Send me an invite with the details. I’ll review it and help you figure out the most practical next step.