✅ ​🇹​​🇴​​🇵​ 3️⃣% of performers on Upwork 🥇 ✅ 𝟏𝟎𝟎% 𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 ✅ $20️⃣0️⃣​k + Earning ✅ Worked 7000+ plus hours ✅150+ Success Projects ✅Full Stack Developer having 10+ years of experience in .net and angular. I am a seasoned senior .NET/C#/Angular developer with extensive experience in building both desktop and web applications. With over 10 years in the industry, I have a deep understanding of the .NET framework and a strong command of C# programming. My expertise involves the entire software development lifecycle, from architecture, and design to implementation and maintenance. 👉𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀👨‍💻 ✅ ASP.NET MVC ✅ ASP.NET Core ✅ Web API (REST, SOAP, JSON, XML) ✅ Azure Functions ✅ Microservices Architecture ✅ Microsoft Azure Cloud Services ✅ LINQ ✅ Entity framework ✅ OOP ✅ Three Layer Architecture ✅ Repository Design Pattern 👉Azure Expertise👨‍💻 ✅ Azure Data Factory – Pipelines, Dataflows, Linked Services, Parameterization, Triggers ✅ Azure Virtual Machines – Windows/Linux setup, configuration, and scaling ✅ Azure App Services – Hosting web apps, APIs, deployment slots, autoscaling ✅ Azure Blob Storage & Data Lake – Secure file storage, lifecycle policies, structured/unstructured data ✅ Azure SQL & Databases – SQL Server, PostgreSQL, Cosmos DB, managed backups, geo-replication ✅ Azure Networking – VNets, Subnets, NSGs, VPN Gateway, Bastion, Private Endpoints ✅ Custom Domain Setup & SSL Certificate Installation ✅ Azure RBAC – Role-Based Access Control and Identity Management ✅ Azure Active Directory – Authentication, app registration, conditional access ✅ Azure Key Vault – Secrets, certificates, and key management ✅ Azure DevOps & GitHub Actions – CI/CD pipelines, release management ✅ Infrastructure as Code – ARM Templates, Bicep, Terraform ✅ Azure Monitor – Alerts, Log Analytics, Application Insights ✅ Azure Functions & Logic Apps – Serverless automation and workflows ✅ Azure Front Door & Traffic Manager – Global load balancing and routing ✅ Azure Policy & Governance – Cost control, compliance, tagging strategies 👉 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀👨‍💻 ✅ AngularJS, JavaScript, JQuery, Ajax ✅ HTML5, CSS3, Bootstrap5 ✅ Blazor, Razor in frontend ✅ KendoUI 👉 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲👨‍💻 ✅ MSSQL Server, Azure SQL ✅ SQL queries, Stored procedures ✅ SQL Functions Best regards, Amit

🅷🅴🆈 👋 Hi! I’m a veteran full stack developer, mobile app developer, and team lead leading a senior long-term team capable of taking products from idea → launch → scale → maintenance. I’ve been in professional software development for 25+ years and mobile app development for 17+ years, delivering scalable iOS Development, Android App Development, Flutter, React Native, and backend-driven platforms across startups, SaaS products, enterprises, and high-growth mobile ecosystems. Clients usually come to us when they need more than just coding - they need a technical partner who understands architecture, business logic, scalability, monetization, and long-term product growth. As a mobile application developer, ios developer, android developer, flutter developer, and full stack developer, I specialize in building high-performance native and cross-platform mobile apps used by millions of users worldwide. I work with native iOS development using Swift, SwiftUI, UIKit, and Objective-C, native Android development with Kotlin and Java, as well as Flutter, React Native, and hybrid app development for scalable cross-platform delivery. Over the years, I’ve helped build 700+ apps across fintech, healthcare, social networking, education, entertainment, e-commerce, IoT, and enterprise SaaS. My experience covers the full mobile app development lifecycle - system architecture, UI/UX implementation, backend development, API Integration, DevOps, deployment, scaling, optimization, and long-term product evolution. 🏆 Why Clients Choose Me ✔️ 25+ years as a full stack developer and software architect
 ✔️ 17+ years in mobile app development
 ✔️ 700+ mobile apps delivered across iOS, Android, Flutter & React Native
 ✔️ Expertise in native app development, hybrid app development, and scalable backend systems
 ✔️ Reduced crash rates by up to 70% and improved app performance by 50% on production apps
 ✔️ Built mobile platforms used by 5M+ users worldwide
 ✔️ Strong experience with Mobile App Improvement, Mobile App Bug Fix, and modernization projects
 ✔️ Long-term experience with startups, SaaS companies, enterprises, and Fortune 500 clients
 ✔️ Full-cycle delivery: architecture → development → deployment → scaling → support 📱 Native iOS & Android Development • Native iOS Development with Swift, SwiftUI, UIKit, Combine, Objective-C • Native Android App Development with Kotlin, Java, Jetpack Compose • Smartphone app optimization for performance, UX, and scalability • Clean Architecture, MVVM, VIPER, modular app structures • Device integrations: BLE, GPS, biometrics, camera, sensors, HealthKit, Google Fit • App Store & Google Play deployment pipelines • Multi-language apps with localization and accessibility support • Advanced performance optimization and memory management 🔁 Cross-Platform & Hybrid App Development • Flutter developer expertise for scalable cross-platform products • React Native development with custom native module integrations • Kotlin Multiplatform Mobile (KMM/KMP) • Shared business logic across iOS and Android • Adaptive UI systems and responsive mobile layouts • Cross-platform architectures reducing development time by 40–60% 🔧 Backend, API Integration & Infrastructure • REST API and GraphQL API Integration • Firebase, Node.js, PHP, and scalable backend services • Authentication systems, caching, offline sync, token management • SQLite, Room, Realm, Core Data • Push notifications: FCM, APNS, OneSignal • Real-time chat, geolocation systems, dashboards, and live data platforms • Backend-connected mobile ecosystems with scalable cloud infrastructure ⚙️ DevOps, CI/CD & Delivery • Fastlane, GitHub Actions, Bitrise, Firebase App Distribution • Automated testing and deployment pipelines • Beta testing, crash analytics, staged rollouts • CI/CD optimization for faster and safer release cycles • AWS and scalable cloud deployment workflows 📊 Analytics & Monetization • Firebase Analytics, Mixpanel, Amplitude, Google Analytics • In-app purchases, subscriptions, AdMob, Facebook Ads • Retention optimization and funnel analytics • Data-driven product iteration and growth optimization 🔌 Advanced SDK & Hardware Integrations • AVFoundation, CameraX, Core Bluetooth, Core Motion • Stripe, Twilio, Agora, Sendbird, Mapbox, OpenCV • IoT dashboards, BLE integrations, voice/video systems • Camera-heavy and sensor-based mobile applications 🌍 Industries Served • Fintech & Banking • Healthcare & Fitness • E-commerce & Retail • Smart Home & IoT • Education & E-learning • Social Networking • Travel & Hospitality • Entertainment & Media • SaaS & Enterprise Platforms ✅ Let’s Build a Mobile Product That Scales!

Senior Full-Stack .NET Web Developer with 8+ years of experience in C#, ASP.NET Core, .NET 6/8, MVC, Blazor, React, Angular, SQL Server, and Azure. I build enterprise web applications, SaaS platforms, REST APIs, and microservices with 68+ projects delivered on Upwork and consistent 5-star client feedback. CORE EXPERTISE: ✅ Backend Development — C#, ASP.NET Core, .NET 6/8, MVC, Blazor, REST APIs, Microservices architecture ✅ Frontend Development — React, Angular, JavaScript, HTML5, CSS3, Bootstrap (responsive, modern UI) ✅ Database & Data Access — SQL Server, Entity Framework Core, Dapper (query optimization, performance tuning) ✅ Cloud & DevOps — Microsoft Azure, AWS (deployment, hosting, CI/CD, legacy .NET modernization) ✅ AI Integration — OpenAI API, Copilot Studio, Agentic AI (chatbots, automation, AI-powered features inside .NET web applications) ✅ Team Leadership & Client Communication — I lead a development team, so I scale from quick fixes to full product builds, with clear updates at every milestone WHY CLIENTS HIRE ME: Clients endorse me most often as "Committed to Quality" (27x), "Collaborative" (18x), and a "Clear Communicator" (15x). I deliver clean architecture, honest timelines, and software that's maintainable long after launch. Message me with a short description of your project I'll reply within minutes with an honest assessment of scope, timeline, and approach.

19+ Years of Professional Experience in the Software Industry as a Technology Consultant/Senior Software Architect/Senior Software Developer in the Area of System Analysis, Design & Development using industry Best Practices and Patterns. I have successfully delivered numerous projects, continuously driving innovation and excellence. 🎯 Expertise in Domains: Logistics, Banking, E-Commerce, Healthcare, Railway, etc. 👉 Experience & Skills: ✅ Mobile App Development (Native/Hybrid): I bring extensive experience in developing mobile solutions using cutting-edge technologies such as Next.js, React, Angular, Node.js, ASP.NET Core, C#, Flutter, IONIC, Swift, XCode, and Clean Architecture, ensuring seamless and efficient app development. ✅ App Development & Deployment: Specialized in building applications from scratch and deploying them on IIS and Azure platforms. Expertise includes working with Microsoft Azure services like App Services, Web Jobs, Azure Functions, and Azure Storage (Blob & File Share). ✅ API Integrations: Proficient in integrating a wide array of APIs from leading service providers, such as FedEx, UPS, DHL, EasyPost, Amazon, AXIS, USPS, Pitney Bowes, QuickBooks, and DocuSign, to enhance functionality and streamline business operations. ✅ Payment Gateway Integrations: Strong expertise in integrating secure payment gateways such as xCharge, PieConnect, Authorize.Net, and ACH, ensuring smooth and secure transaction processing. ✅ Front-End Development: Solid knowledge of front-end technologies including Flutter, Angular, IONIC, jQuery, HTML5, Bootstrap, and TypeScript, enabling me to build dynamic, responsive, and user-friendly interfaces that seamlessly integrate with backend functionality. ✅ DevOps & Version Control: Skilled in version control systems such as GIT, SVN, and TFS to manage code repositories and facilitate team collaboration. Well-versed in DevOps practices for Continuous Integration/Continuous Delivery (CI/CD), automating deployment pipelines for smooth, efficient releases. ✅ Reporting Tools: Extensive experience working with SQL Server Reporting Services (SSRS), Crystal Reports, Telerik Reports, DevExpress/DevExtreme, and Telerik Kendo, delivering tailored reporting solutions that meet client requirements. ✅ ETL Processes & SSIS: Expertise in developing complex SSIS packages for efficient ETL (Extract, Transform, Load) processes, ensuring seamless data integration and transformation across systems. ✅ Mobile App Development (Hybrid & Native): Skilled in building both hybrid and native mobile applications for iOS & Android using Flutter, Angular, and IONIC, delivering seamless user experiences across all devices. ✅ Database Optimization & Performance Tuning: Adept at optimizing large databases with millions of records, resolving performance issues, and delivering actionable solutions that improve system operations and efficiency. 👉 Technical Proficiencies: 🚀 Languages & Frameworks: Next.js, React, Angular, Node.js, C#, .NET Core, Blazor, ASP.NET, MVC, Web API development (RESTful & SOAP). 🚀 Front-End Technologies: Flutter, Angular, IONIC, jQuery, HTML5, Bootstrap, TypeScript for building responsive, scalable, & dynamic web/mobile applications. 🚀 Version Control & DevOps: GIT, SVN, TFS, with a strong focus on CI/CD practices for continuous integration and deployment. 🚀 Databases & Reporting: SQL Server, Entity Framework, LINQ, Telerik Reports, SSRS, Crystal Reports. 🚀 Testing & Debugging: Experience in unit testing and proficient with tools like Postman and Fiddler for testing and debugging APIs. ↪️ Why should I be the best --✅ 100% client satisfaction. --✅ 24/7 Availability --✅ Strong technical skills and business solutions provider. --✅ Top-notch communication and responsiveness. You will always feel in control of the project. --✅ Well-defined processes to keep you updated on each phase of development. --✅ Attitude with No excuses, just get it done. Happy to Help You!

I'm a passionate full-stack developer having 10+ years of experience with PHP, Laravel, JavaScript, jQuery, .NET, C#, Dot Net Core, Python, Django, Angular, Blazor, React, HTML | CSS Ajax Bootstrap XML. Also have worked with CMSs including WordPress, Shopify, OpenCart, and Prestashop, etc. Focus on: 🌐 Web Apps - PWAs - SaaS. 🧑‍💻Automation and Custom Software of any kind. 🖥 Websites of any type, eCommerce & Landing Pages – WordPress, Shopify, Wix, Squarespace, Webflow. 🔥 UX/UI Wireframes, Interactive Prototypes, User Experience Mapping and User Interface Design. 🌟 TECHNOLOGY STACKS 🌟 🔹Open-Source Technologies: Python, ASP.NET, C#, Blazor, MEAN / MERN, WPF/WCF 🔹Frameworks: Entity, MVC, Laravel, CodeIgniter, Django Framework, Flask, ExpressJS. 🔹 Backend: ASP.Net, JavaScript, Python, Node Js, PHP, C#, .NET Core 🔹 Python Libraries: TensorFlow, Pandas, Numpy, SciPy, Scikit-Learn 🔹 Frontend: Bootstrap, AngularJS, ReactJS, Vue.JS, JavaScript / Jquery HTML / HTML5, 🔹 Database: MySQL, MongoDB, MariaDB, PostgreSQL, Microsoft SQL, Neo4J 🔹 CMS & eCommerce: WordPress, Shopify, WebFlow, Wix 🔹UI/UX Technologies: AdobeXD, Figma, Moqups, Adobe Photoshop, Adobe Illustrator, Adobe InDesign 🔸 Social Integration - Facebook, Twitter, Youtube, Instagram, Snapchat, Tinder 🔸 Chat - XMPP, Socket, Firebase, GetStream, Twilio 🔸 Version Control Tools - Github, Bitbucket, Gitlab 🔸 Map, Apple Map kit, Geolocation, GPS, Location Tracking 🔸 Audio / Video Live Streaming 🔸 Payment Gateway: Paypal, Braintree, Stripe, Credit Card, etc. 🔸 Advertisement, Push Notifications, GCM, Google Analytics 🌟 INDUSTRY EXPERIENCE 🌟 Agriculture, Retail, E-Commerce - B2B & B2C, Banking Finance and Insurance, Medical and Healthcare, Automotive, E-learning and Educational, Dating, Recruitment & Jobs, NGO and Government, Media and Entertainment, Logistics and Transportation, Travel and Hospitality, Gaming & Sports, Real Estate, Social Networking & Manufacturing. 💬 𝗙𝗥𝗘𝗘 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡: My consultation is 𝗳𝗿𝗲𝗲. Let's schedule an introductory call and discover the possibilities of working together. And even if we don't work together, you will get some tips/ideas that can be helpful to your project. Just click on the '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' button and experience yourself.

Having 12 years’ experience in Asterisk/OpenSips/Kamailio based application development. With over 6 plus years’ experience in WebRTC development along with 4 years’ experience in Windows development. Below are highlights of the projects and applications worked on: 1. Worked on all the Asterisk configuration changes, which even includes PJSIP. 2. Asterisk Event module (Which handles the request from NodeJS server and handles the events like play greeting, play MOH, Take input field, record greeting, making call, etc. it covers all the features and functionalities of asterisk) 3. Projects which deal with SIP WebRTC Client both Audio & Video. 4. JSON VOIP Client (Audio & Video). This was developed to overcome the loading of heavy SIP stack in browser or mobile. as a result we develop a simple JSON framework to make calls, with a server in the middle that converts to SIP and pushes calls to the asterisk server. 5. Applications for Video conferencing on WebRTC, which supports Peer to Peer in browsers, Android & iOS systems. 6. Applications for Video on WebRTC with SFU (Janus GateWay) in browser, Android & iOS systems. 7. Windows and Mac-based Video Conference applications. In short, we developed an application that is similar to Zoom Meetings. 8. Technologies used for applications like OpenSips/Kamailio only for Proxy, Registrar, and Load Balancing. 9. Worked on C# wpf WebRTC video conferencing service. 10. Worked on C# wpf PJSIP softphone application along with 11. Worked on electron.js with PJSIP softphone application. 12. Microsoft Teams SBC (Call To Teams) 13. SIP to Whatsapp gateway with freeswitch and lineageos on ubuntu with multiple Virtual machines

Recent work: - AI Automation - Document Review Product - My existing ComfyUI DiT video generation workflow (LTX-Video 2.3 I2V), which runs on H200. Optimized a native Blackwell (B200, sm_100) implementation of SageAttention specifically mirroring the SageAttention2++ architecture targetting CUDA 12.8+ - Product price analytics using data from Terapack, Pricecharting etc using NLP - Combined SAHI (Slicing Aided Hyper Inference) technique with Yolov5 to detect moving objects - A non-CNN-based motion vector estimator for image deblurring due to motion blur - Deep Learning based Document image processing solution - High Accuracy Face Tracking and face blurring solution Total Experience: +27 years Core Skills: - C/C++ - C# (Unity) - TensorFlow - Python - Flutter & Dart - NodeJS, Flask, Django - MongoDB - Git

✅ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 ✅𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 12+ years of professional experience Specialties: Project Management with Scrum & Extreme Programming Computer Systems Design and Architecture Programming: - .NET & .NET Core, C#, Blazor, ASP.NET MVC, ASP.NET, WebAPIs, Minimal APIs, WinForms, ADO.NET, LINQ, WCF, SOAP, etc - JavaScript (AngularJS, jQuery, KnockoutJS, ReactJs) and TypeScript, NodeJS, Ajax, HTML, CSS, JSON, DOM, XML, etc - SQL (MySQL, MS SQL) / NoSQL (MongoDB, ...), BI, Multithreading etc Next is the list of what exactly you get when you hire me: - Honest, long-term partner & friend, not just a coder (if you need just a coder for few days I am not the right choice). I will supply many ideas and suggestions you never get from the regular programmer, guaranteed! - Best Architecture & Design of your application - I will make code changes & commits from the first day you hire me. We may use Extreme Programming/Scrum, unless you prefer something else - We may carefully update your live server(s) with the latest code (Deploy) or setup new if you don't have servers yet (and yes, we will also setup continues integration & deployment). I have experience with hardware & OS software, Azure & AWS Clouds, DevOps and more! (You will see how it is possible to save $$$ every month on that, guaranteed!) - We will use best tools available to get your tasks done, your software will ship and your customers happy! * Visual Studio 2022 (or 2107 or 2015 or even 2013? maybe even VS Code) or WebStorm or IDEA? NP * Want to make Enterprise web app? Sure we can use Telerik (Kendo) / DevExpress or any other web controls. * Have already spaghetti code in ASP.NET 1.1 or 2.0? Well, we can use it for old things (upgrading very quickly to latest) and use ASP.NET MVC / ASP.NET Core for new things... * We most probably will use Github or Bitbucket as places where your code live in peace (or we can just install own Git / SVN repo on your server if you crazy about security and access), JIRA/Asana for your tasks & bugs tracking. * Need crazy attractive front-end? Sure, we will use AngularJs / React / or even Knockout. Want design for free, which still looks cool? Well, sure we will use Twitter Bootstrap (or Foundation), templates & starter kits! * Want to scale your app to the sky and make sure your clients are happy and all of them to get the best performance with minimum latency? Well, AWS, Docker, why not? I can use .Net SDK for AWS. We can use all that and much more! Please, when you hire me, we can talk every day. I Love to talk with my clients, partners & friends, not just code and hack!

My name is Fabio Silva, I am married and I work with programming for about 27 years. I love creating new interesting programs! * My strong points: - I am an expert in C# and .Net, but I can adapt myself very easily and quickly to any different language and technology. I have strong experience in migrating older systems, databases, and legacy languages to modern alternatives. - I am experienced in Code Reviews, especially for C# and Javascript. - I have great experience in finding and troubleshooting hard bugs, even with limited data and information, and even with hard access environments. - Due to my experience, I usually provide a great range of creative solutions and alternatives to the most diverse problems. * My current specialization: - My focus is C# and .Net Core, in any area where it can be leveraged. - On the web, I work on Asp.Net Core using Microservices, Razor Pages, MVC, and WebApi, and some quick tasks with Blazor. In the front end, I work with Plain Javascript and React, KnockoutJS, with some experience in Angular. - On the desktop, I'm good at creating Console, Windows Forms, WPF, and Avalonia apps. - I work mostly with Microsoft SQL Server, PostgreSQL, and SQLite databases. - I work with Git daily as shared source control, with experiences in GitHub and BitBucket. - Finally, I can do cross-platform development (Linux/Windows/macOS). And in any case, I can deploy to docker containers. * Other talents: - Languages like Basic, Clipper, Visual Basic (and VB.Net), Borland Delphi - Databases like MySql, Interbase/Firebird - Other like PowerShell Scripts, Selenium WebDriver

Result driven Full Stack Developer with 5+ years of experience in designing, developing, and maintaining scalable web applications and AI-powered solutions. Proficient in modern front-end and back-end technologies, with a strong focus on performance, security, and user experience. Adept at working in fast-paced, Agile environments and collaborating with cross-functional teams to deliver high-quality solutions. AI/LLM & Automation: - Intelligent apps powered by GPT-4, Claude, Gemini, and open-source LLMs (LLaMA, Mistral) - RAG architectures with vector search (Pinecone, ChromaDB, Weaviate) - AI agents and multi-agent workflows using LangChain, CrewAI, AutoGen - Business process automation with n8n, Make, Zapier — connecting APIs, databases, and AI models - Prompt engineering, function calling, and structured outputs for production LLM apps - AI-powered development with Cursor, GitHub Copilot, Claude Code Frontend Development: - Expertise in React.js, Next.js, Vue.js, Angular for dynamic and interactive UI development - Strong foundation in HTML, CSS, TailwindCSS, Bootstrap for responsive and accessible design - Experience with state management (Redux, Context API, Zustand, MobX) and component-based architecture - Proficiency in TypeScript for scalable and maintainable frontend development - Hands-on experience with Storybook.js for UI component development and testing Backend Development: - Proficient in C++, C#, ASP.NET MVC, ASP.NET Core, Node.js, Express.js, PHP (Laravel), Python (Django, Flask), Ruby on Rails for building robust server-side applications - Skilled in database management with MongoDB, PostgreSQL, MySQL, Firebase - Experience developing and integrating RESTful APIs and GraphQL for seamless communication between services - Strong understanding of authentication & security best practices (JWT, OAuth, role-based access control) - Knowledge of microservices architecture and serverless functions (AWS Lambda, Firebase Functions) Blockchain Development: - Smart contract design and implementation (Solidity, Rust) - Experience with Ethereum (EVM), Solana, and Binance Smart Chain - Proficient in token standards (ERC-20, ERC-721, ERC-1155, SPL Tokens) - dApp development using Web3.js, Ethers.js, and Anchor framework - NFT minting, staking, and marketplace development - Token presale and ICO/IDO platforms DevOps & Workflow Optimization: - Version control and collaboration using Git, GitHub, GitLab, Bitbucket - Experience with CI/CD pipelines, Docker, Kubernetes, and cloud deployment (AWS, GCP, Vercel, Netlify) - Infrastructure as Code (IaC) experience with Terraform and AWS CloudFormation - Experience in log management & monitoring (Grafana, Prometheus, New Relic)