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.

◼ 𝐀𝐈-𝐝𝐫𝐢𝐯𝐞𝐧 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐎𝐩𝐞𝐧𝐀𝐈 & 𝐂𝐥𝐚𝐮𝐝𝐞 𝐀𝐏𝐈 | 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐚𝐩𝐩𝐬 & 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 | 𝐯𝐢𝐛𝐞 𝐜𝐨𝐝𝐢𝐧𝐠 ◼ 10+ years of experience in Unity, AR & VR development ◼ $100K+ Total Earnings Hello! I’m Serhii, an AR/VR Developer and Unity 3D Engineer specializing in immersive, interactive experiences for games, training, simulations, and enterprise applications. I work with Unity 3D, Virtual Reality (VR), Augmented Reality (AR), and XR technologies to transform ideas into engaging, high-performance digital products. I focus on building stable, scalable, and optimized AR/VR solutions that work seamlessly across modern devices — from Oculus Quest and HoloLens to Apple Vision Pro and mobile platforms. Why Work With Me as a Unity / AR / VR Developer 🔹 Innovation Through Practical Development I don’t experiment for the sake of novelty — I build production-ready AR/VR applications, immersive simulations, and Unity-based games that deliver real value and strong user engagement. 🔹 Unity 3D Expertise Unity is my core platform. I use Unity 3D to create optimized VR games, AR applications, simulations, and interactive visualizations, focusing on performance, stability, and smooth user experience. 🔹 Cross-Platform AR/VR Solutions I develop cross-platform AR/VR applications for: Oculus Quest / Quest 2 / Quest Pro HTC Vive, Valve Index Microsoft HoloLens Mobile AR (ARKit, ARCore) Apple Vision Pro WebXR and desktop environments 🔹 Collaborative & Transparent Process I work closely with clients, product owners, and teams to ensure the final solution aligns with business goals, technical constraints, and user expectations — whether it’s a VR training system, AR marketing app, or Unity game. 🛠️ Core Expertise Unity 3D Development Virtual Reality (VR) Development Augmented Reality (AR) Development XR / Mixed Reality Applications Game Design & Game Development Interactive 3D Simulations Real-time Visualization AR/VR Performance Optimization UI/UX for Immersive Applications Apple Vision Pro Development 🏆 Real Project Experience I’ve worked on a wide range of Unity AR/VR projects, from immersive VR games to enterprise-grade training simulations. One of our solutions is used by KPMG (Top-10 global consulting firm) for large-scale VR training sessions involving multiple teams and 100+ trainees, demonstrating reliability, scalability, and real-world impact. 🌐 Let’s Build Together If you’re looking for an experienced AR/VR Developer, Unity 3D Developer, or Game Developer who understands both technology and business goals — I’m ready to help. Let’s turn your idea into a high-quality AR/VR experience built with Unity and modern XR technologies. Keywords: AR VR Developer, Unity 3D, Unity Developer, Virtual Reality, Augmented Reality, XR, Mixed Reality, Game Developer, VR Application, AR Application, Oculus Quest, ARKit, ARCore, Vuforia, AR Foundation, Simulation, Training, Visualization, Multiplayer, Unity Analytics, Photon Networking, SteamVR, Firebase, Apple Vision Pro, WebXR

I am TOP LEVEL Mobile app, game, web app, website & artificial intelligence (AI) developer who helped many clients and employers to solve their technology-related problems & boost their business by providing innovative solutions that enabled them to take their business to the next level. Technologies I use: ✅ iOS: Swift/Objective C ✅ Android: Java/Kotlin ✅ AI, ML, LLM, Chatgpt API, Claude, Python, C++ ✅ Cursor, Lovable ✅ Unity3d , Unreal Engine UE4,UE5 ✅ React Native, Flutter, Xamarin & Hybrid: HTML5, CSS3, JavaScript ✅ PHP, Python, WordPress, .Net, React, NodeJS, MySQL ✅ React (Next.js), D3.js ,Chart.js ✅FastAPI ✅SQLite/PostgreSQL, Redis ✅AI/ML Tools: OCR, Machine Learning ✅ Design: Photoshop/illustrator/Figma/Sketch ✅ Cloud services: Firebase, AWS, Docker ✅ Cross-platform: Flutter (Dart) ✅ Design: Photoshop/illustrator/Figma/Sketch ✅ Cloud services: Firebase, AWS ✅ Persisting Data: Realm Database, Cloud Firestore, SQLite ✅ IDE: Android Studio, Xcode ✅ Control Versions: GitHub, Bitbucket ✅ Architecture: MVVM, MVP, clean code ✅ Professional software engineering tools and methodologies ✅ Equipped to work with IoT dev kits, prototypes, serial console interfaces etc. ✅ Parse SDK. ✅ Node.js What you can expect: - Client's satisfaction is on the top of my priority; - Excellent products and support; - Quality of work is very high; Top Business Category / Verticals that i have worked for: - Chat apps (XMPP, Firebase) - Fitness/workout apps - AI chat app, Chatgpt, Chatgpt API - AI photo & video generation tools - Taxi/GPS - Mobile and desktop games - AI mobile apps & Web apps - eCommerce Apps - Streaming( audio & video) - Photo/Video Editing apps - Mobile & Desktop Websites - Enterprise Mobility Solutions - Food ordering apps - Web Service Development using PHP/MySQL, JSON, XML , RSS. - iAd, Revmob, Chartboost - Github, SVN and JIRA. - Google Map Service, Apple Map - QR code, Bar code - Cloud based mobile applications - Social networking with GPS, Maps, Chat, Event, Comment, Media Sharing

💯 100% Job Success | 💲 $80K+ Earned | 70+ Projects Completed ✅ 10+ Years of Embedded Systems Experience ✅ Top Rated Freelancer on Upwork ✅ 100% Job Success Score ✅ $80K+ Earned | 2,600+ Hours Worked ✅ End-to-End Product Development Support ✅ Hardware + Firmware + IoT + Software Team Support I help startups, founders, and businesses design and develop reliable, cost-effective, and production-ready embedded products. My core expertise is in embedded hardware design, PCB design, and firmware development. Since 2013, I have worked on a wide range of products in industrial automation, IoT, wireless systems, energy products, smart devices, and consumer electronics. While hardware is my primary specialization, I also provide embedded software, mobile app, web dashboard, and backend development support through my team of engineers. This allows clients to work with one reliable partner for complete end-to-end product development. ✅ Why Clients Work With Me 10+ years of experience in embedded product development Strong expertise in hardware + firmware co-development Hands-on experience with production-ready PCB design Support from prototype stage to final product Clear communication and practical engineering approach Long-term project support and reliable execution ✅ Core Services Embedded hardware design Schematic design PCB design and layout Firmware development in C Board bring-up and debugging Wireless and IoT product development Prototype to production support Mobile and web applications for connected products ✅ Hardware & PCB Design Expertise 2-layer, 4-layer, and 6-layer PCB design Compact, low-cost, and manufacturable board design Analog and high-speed PCB design Hardware debugging and optimization Product redesign and cost optimization ✅ Embedded Systems & Firmware Expertise Worked with 8-bit, 16-bit, and 32-bit microcontrollers from: Texas Instruments Microchip / Atmel STMicroelectronics NXP Espressif Nordic Semiconductor Strong hands-on experience with: UART I2C SPI ADC / DAC RTC Timers MMC and related interfaces ✅ Wireless Technologies Bluetooth Low Energy (4.0 / 4.2 / 5) Wi-Fi Zigbee MiWi GSM (2G / 3G / 4G) GPS Sub-GHz RF ✅ End-to-End IoT Development Along with hardware and firmware, I also support complete IoT ecosystem development through my team, including: Android and iOS mobile apps Web dashboards Backend / server development Cloud-connected IoT systems ✅ Industries & Solutions I have worked on products related to: Industrial automation IoT and connected devices Smart agriculture Energy and power systems EV charging solutions Fuel / gas dispensing systems Consumer electronics Wireless embedded products Whether you need PCB design, embedded hardware, firmware development, wireless integration, or a complete IoT solution, I can help turn your idea into a reliable working product.

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.

If you're looking to: • Build AI-powered applications using LLMs (GPT / OpenAI) • Develop AI chatbots, assistants, or agentic systems • Create scalable full-stack SaaS platforms (.NET, Node, Python) • Integrate APIs, CRMs, and business systems • Implement RAG pipelines, Voice AI, or automation systems => I can help you turn it into a production-ready, scalable solution. I build AI-powered systems and full-stack applications using LLMs, OpenAI (GPT), Python, and .NET, combined with robust API integrations. My focus is not just features, I design and develop complete AI systems that connect data, automate workflows, and scale with your product or business. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵: • AI chatbots & GPT-powered assistants (OpenAI, LLMs) • RAG systems (document processing, semantic search, knowledge AI) • Agentic AI systems & multi-step workflows • Voice AI & calling systems (Twilio, Vapi) • Full-stack AI SaaS applications (.NET, Node.js, Python) • API integrations across CRMs, SaaS platforms, and databases • Automation systems and backend workflows • Machine learning / NLP-based data processing 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸: • Core: Python, C#, .NET, Node.js, JavaScript • AI: OpenAI (GPT), LLMs, LangChain, embeddings, NLP • AI Development: Claude Code, GitHub Copilot, Codex, Cursor, Windsurf, Manus, Antigravity • Backend: .NET APIs, REST APIs, microservices, webhooks • Full-stack: .NET (Blazor / ASP.NET), Node.js, frontend frameworks • Data: SQL / NoSQL databases, vector databases (RAG systems) • Automation & Integrations: APIs, Zapier, Make, n8n • CRM / Systems: HubSpot, Salesforce, Airtable • Voice AI: Twilio, Vapi (AI voice agents & calling systems) • Tracking & Marketing: ClickFlare, webhook tracking • Payments: Stripe • Cloud & Deployment: scalable backend systems 𝗪𝗵𝗮𝘁 𝗽𝗿𝗼𝗯𝗹𝗲𝗺𝘀 𝗜'𝘃𝗲 𝘀𝗼𝗹𝘃𝗲𝗱: • AI Lead Generation & Outreach System Built an end-to-end AI pipeline for lead sourcing, enrichment, and automated outreach - replacing manual prospecting and saving hours of repetitive work. • AI Customer Support System (GPT + RAG) Developed a chatbot integrated with internal knowledge base using embeddings and semantic search - enabling fast, accurate responses and reducing support workload. • Full-Stack AI SaaS Platform (.NET + APIs + LLMs) Designed and built a scalable AI application with backend APIs, LLM integration, and user workflows - turning a concept into a production-ready system. • RAG-Based Document Intelligence System Implemented document ingestion, embeddings, and retrieval pipeline for semantic search and Q&A across large datasets. • Voice AI & Calling Automation (Twilio / Vapi) Built AI voice agents to handle calls, responses, and workflow execution - automating communication processes. • Business Systems Integration (APIs + CRM + Payments) Integrated Stripe, CRM platforms, and backend systems to automate workflows, sync data, and eliminate manual operations. Share your current workflow or idea - I’ll quickly break it down and suggest the best way to build or automate it using AI.

𝐁𝐨𝐨𝐬𝐭 𝐘𝐨𝐮𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐰𝐢𝐭𝐡 𝐄𝐱𝐩𝐞𝐫𝐭 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 I’m 𝐏𝐫𝐢𝐲𝐚𝐧𝐤𝐚 𝐁𝐡𝐚𝐯𝐬𝐚𝐫, a dedicated and versatile Full-Stack Developer with extensive experience in both front-end and back-end development. With a passion for writing clean, efficient code and solving complex problems, I specialize in building robust, scalable applications using the latest technologies. Over the years, I have successfully delivered projects across diverse sectors including healthcare, education, e-commerce, and real estate, tailoring solutions that meet specific business needs and drive growth. My technical expertise spans a wide range of programming languages and frameworks, enabling me to handle 𝐟𝐮𝐥𝐥 𝐥𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭—𝐟𝐫𝐨𝐦 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 𝐝𝐞𝐬𝐢𝐠𝐧 𝐚𝐧𝐝 𝐩𝐫𝐨𝐭𝐨𝐭𝐲𝐩𝐢𝐧𝐠 𝐭𝐨 𝐝𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐦𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞. 𝐌𝐘 𝐂𝐎𝐑𝐄 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐒𝐊𝐈𝐋𝐋𝐒 𝐈𝐍𝐂𝐋𝐔𝐃𝐄: ➤ 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: ASP.NET, MVC, .NET Core, C#, Web API, Node.js ➤ 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: React.js, Angular (all versions), AngularJS, HTML5, CSS3, JavaScript, jQuery, Bootstrap, Sass ➤ 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, Firebase, MongoDB, Cassandra, NoSQL, Azure SQL ➤ 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: AWS Cloud Architecture, Serverless, Docker, Webpack ➤ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗠𝗲𝘁𝗵𝗼𝗱𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Agile and Waterfall I bring strong expertise in integrating cloud solutions and DevOps best practices, ensuring smooth deployment pipelines and scalable infrastructure. Whether working on greenfield projects or enhancing legacy systems, I prioritize maintainability, security, and performance. 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? ➤ I combine deep technical skills with a user-focused approach to build engaging and intuitive applications. ➤ I communicate clearly and work collaboratively to ensure project milestones are met on time and within budget. ➤ I stay up-to-date with emerging technologies to provide modern, future-proof solutions that add real business value. I’m excited about the possibility of partnering with you to turn your 𝗶𝗱𝗲𝗮𝘀 𝗶𝗻𝘁𝗼 𝗿𝗲𝗮𝗹𝗶𝘁𝘆. Whether you need a powerful web app, a mobile solution, or cloud-based architecture, I’m ready to deliver. 𝗟𝗲𝘁'𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁 𝗮𝗻𝗱 𝗱𝗶𝘀𝗰𝘂𝘀𝘀!

I’m S M Nazmul Hasan, CEO of Kolpolok Limited, trusted by cybersecurity companies, SaaS providers, and VPN startups in 65+ countries. Over the past decade, I’ve delivered VPN solutions that power millions of daily connections. I build scalable, reliable VPN platforms that drive real business growth. 💡𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝗜 𝗗𝗲𝗹𝗶𝘃𝗲𝗿 𝗳𝗼𝗿 𝗬𝗼𝘂 ➡️ End-to-End VPN App Development: ✔ Multi-platform VPN apps for iOS, Android, Windows, macOS, Fire TV, and browsers ✔ Fully white label vpn solutions with 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝘀𝗼𝘂𝗿𝗰𝗲-𝗰𝗼𝗱𝗲 𝗼𝘄𝗻𝗲𝗿𝘀𝗵𝗶𝗽 ✔ Seamless in-app purchases, user authentication, and multi-language support ✔ Intuitive UI/UX design focused on conversion and retention ➡️ White-Label VPN SDK Integration: ✔ WL VPN SDK integration with scalable custom backend solutions ✔ Integration with PureVPN White Label SDK and other leading providers ✔ Ready-to-launch SDKs customized to your brand and user requirements ✔ Full technical support for integration, testing, and deployment ➡️ Multi-Protocol Backend Infrastructure: ✔ Support for OpenVPN, WireGuard, IKEv2, Shadowsocks, VMess, VLESS, IPsec, OpenConnect, Singbox compatible infrastructure ✔ Scalable VPN admin panel dashboards with user management, and analytics. ✔ Real-world traffic optimization, load balancing, and redundancy configurations ✔ Compliance-ready architecture aligned with GDPR, SOC2, and ISO standards 💡𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 I don’t just build apps, I build VPN ecosystems tailored to your business model. ✔ Total Code Ownership – You own the complete source code from day one ✔ Business-First UX – Apps designed for real users, not just developer functionality ✔ Security & Compliance – ISO-certified workflows, and robust encryption standards ✔ Scalable Architecture – Built to grow with your user base, handling thousands of concurrent connections ✔ Rule-Based Routing & Split Tunneling – Optimized configurations for China and restricted regions ✔ Complete Documentation – Clean code documentation ✔ Manual Training & Technical Support – Hands-on guidance for your internal team ✔ Fast Delivery – Fast responses, and transparent progress updates ✔ 𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 𝗨𝗽𝘄𝗼𝗿𝗸 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝗼𝗿 ✔ 𝟭𝟬𝟬%+ 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗥𝗮𝘁𝗶𝗻𝗴 ✔ 𝟵𝟬% 𝗔𝗯𝗼𝘃𝗲 𝗥𝗲-𝗵𝗶𝗿𝗲 𝗥𝗮𝘁𝗲 📝𝗣𝗿𝗼𝘃𝗲𝗻 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱 Delivered 150+ projects in 65+ countries across 5 continents ✔ Developed VPN apps with millions of downloads and 4.9+ star average ratings across Google Play, App Store, and Trustpilot ✔ Supported long-term client growth with performance-focused infrastructure enhancements 👤𝗪𝗵𝗼 𝗜 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 & 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 ✔ Startups, SaaS, and tech firms launching their first VPN product to enter this booming market ✔ Entrepreneurs and VPN resellers seeking high-performance white-label apps with fast deployment ✔ Agencies and consultancies adding VPN to their service portfolio for recurring revenue streams 💡𝗥𝗲𝗰𝗲𝗻𝘁 𝗙𝗼𝗰𝘂𝘀 𝗔𝗿𝗲𝗮𝘀 ✔ Open Connect, WireGuard, OpenVPN, Sing Box optimization for faster connections and lower battery usage ✔ Advanced obfuscation techniques to bypass censorship firewalls ✔ Payment gateway integrations for subscription-based VPN monetization ✔ VPN reseller admin panels with automated user and license management ✔ Multi-protocol hybrid backend design for global coverage and redundancy 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗬𝗼𝘂𝗿 𝗩𝗣𝗡 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 You’re not just hiring a VPN developer. You’re partnering with an expert who understands the technical, business, and security dimensions of building VPN products that scale. If you’re ready to deploy a secure, scalable, and revenue-generating VPN solution under your brand, send me a message. I’ll respond within 24 hours with a tailored roadmap to bring your VPN vision to life. 𝑰𝒏 𝒂𝒅𝒅𝒊𝒕𝒊𝒐𝒏 𝒕𝒐 𝒇𝒖𝒍𝒍-𝒔𝒕𝒂𝒄𝒌 𝑽𝑷𝑵 𝒔𝒐𝒍𝒖𝒕𝒊𝒐𝒏𝒔, 𝑰 𝒉𝒆𝒍𝒑 𝒇𝒐𝒖𝒏𝒅𝒆𝒓𝒔 𝒂𝒏𝒅 𝒑𝒓𝒐𝒅𝒖𝒄𝒕 𝒕𝒆𝒂𝒎𝒔 𝒃𝒓𝒊𝒏𝒈 𝒆𝒂𝒓𝒍𝒚-𝒔𝒕𝒂𝒈𝒆 𝒊𝒅𝒆𝒂𝒔 𝒕𝒐 𝒍𝒊𝒇𝒆 𝒘𝒊𝒕𝒉 𝒊𝒏𝒕𝒖𝒊𝒕𝒊𝒗𝒆 𝒅𝒆𝒔𝒊𝒈𝒏 𝒂𝒏𝒅 𝒍𝒆𝒂𝒏 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝒔𝒕𝒓𝒂𝒕𝒆𝒈𝒊𝒆𝒔. ✔ MVP Development for Fast Launch Agile MVP's tailored to validate your core concept, reduce time-to-market, and attract user traction—without unnecessary features or costs. ✔ UI/UX Design that Converts Crafting modern, user-focused interfaces for mobile and web apps—built to engage, retain, and grow your audience from day one. ✔ Fleet & VTS Tracking – Real-time GPS tracking and fleet optimization systems ✔ IoT Solutions – Smart, connected platforms with real-time automation ✔ AI Integration – Predictive, data-driven features to power growth Whether you're testing a new product or refining an existing one, I ensure your app is not just functional—but user-loved and market-ready. Let’s connect to launch your brand and lead the market today!

I help startups and enterprises build high-impact mobile and web applications that scale and deliver measurable results. Hi, I’m Bhautik Gadhiya, a Mobile App & Full-Stack Developer with over 10 years of experience, $50K+ earned, 28 successful projects, and 4,100+ billed hours on Upwork. I help startups, enterprises, and visionary founders build scalable mobile apps, powerful web platforms, and seamless digital products that drive growth and deliver lasting business value. With a proven track record of 92% Job Success and long-term client relationships, I combine technical excellence, business-focused thinking, and product-first execution to deliver software that doesn’t just work, it wins. 💼 Why Clients Work With Me Proven Expertise: 10+ years building high-performance apps and web solutions for global clients. Mobile + Web Mastery: Deep specialization across iOS (Swift/SwiftUI), Android, Flutter, React Native, and MERN/MEAN stacks. Reliable Partner: 4,000+ hours and 28 projects delivered with measurable business impact. Scalable Solutions: From MVPs to enterprise platforms, I design with future growth in mind. Clear Communication: Clients value my collaborative, transparent approach to project success. 🔑 Core Expertise 📱 Mobile App Development Native iOS: Swift, SwiftUI, Objective-C Native Android: Kotlin, Java Cross-Platform: Flutter, React Native 💻 Full-Stack Web Development Frontend: React.js, Angular, TypeScript Backend: Node.js, Express, PHP, ASP.NET Databases: MongoDB, MySQL, PostgreSQL, MSSQL MERN & MEAN Stack Solutions 🎨 UI/UX & Product Development Human-centered design, wireframing, prototyping Seamless user experiences aligned with product goals ☁️ Cloud & Deployment AWS, Google Cloud, Azure CI/CD, Docker, Kubernetes, scalable infrastructure 🧠 My Approach Business-Aligned Development: Every feature and architecture decision supports your goals, growth, and ROI. Clean & Scalable Code: Writing maintainable, testable, and future-proof solutions. Long-Term Focus: Building not just apps, but lasting partnerships with clients. 📌 Highlights of My Work Built and scaled mobile-first platforms for startups entering competitive markets. Delivered enterprise-grade web solutions integrating complex workflows and databases. Supported long-term clients with end-to-end development, from concept to App Store/Play Store deployment. 📩 Let’s Connect If you’re looking for a reliable, senior developer who combines deep technical expertise with business sense, let’s connect. I’ll help you bring your idea to life, scale your existing product, or optimize your current systems for long-term success. 👉 Invite me to discuss your project today, let’s build something that lasts.

Greetings.... I would like to introduce myself as development freak who always love to work with Microsoft based technologies and its associated frameworks i am always in love to the code and development . My Area of expertise includes: *Frontend:* AngularJS, Vue JS, WordPress, ReactJS/Redux, Bootstrap, JavaScript, TypeScript, jQuery, Ajax, HTML5, Material UI, TailwaindCSS. *Backend:* NodeJS, ExpressJS, PHP, Laravel, CakePHP, Yii, Codeigniter, WordPress, WHMCS, Python, Ninja trading, Django, Flask, RESTful API, GraphQL *Mobile App:* React-Native, Xamarin, Ionic, Flutter, Apache iOS & Android. *Database:* MongoDB, PostgreSQL, MongoDB, MySQL. *Designing:* UI/UX, Photoshop, Adobe XD, Adobe Illustrator, Corel Draw. *Python |AI |Machine Learning | Trading Nopcommerce/Asp.net/MVC/Winform/WPF/Entity Freamework/Angular js/Umbraco DDEX/Dapper/Spotify Umbraco Xamarin React Nopcommerce Python, Django, AI, Machine Learning HTML5/CSS3/BOOTSTRAP3 C#, Azure, AWS JavaScript/Node js Mysql/MongoDB/SQLite WordPress, PHP, Javascript, Jquery Python (web-scrapping, Ai, Agentic AI) Server setup Penetration Testing (VAPT) Mobile App development (Xamarin/ React Native/ Native script/ Flutter/ Kotlin ) No project is too small or too large for us. If you value high-quality work, then you would love to work with us. Thanks Jitender D.