Senior .NET Developer with 10+ years of experience building secure, scalable, and high-performance enterprise applications, SaaS platforms, backend APIs, and cloud-based systems using C#, .NET Core, ASP.NET Core, Azure, SQL Server, React, Angular, and modern software architecture patterns. I help startups, SaaS companies, and enterprises build new applications, modernize legacy .NET systems, develop robust APIs, create full-stack applications, and deploy scalable solutions on Microsoft Azure. My experience covers the complete application lifecycle — from architecture and database design to backend development, frontend development, cloud deployment, API integrations, security, CI/CD, and performance optimization. What I Can Help You Build ✔ Full-Stack .NET Applications — End-to-end applications using C#, ASP.NET Core, .NET 8, Web API, React, Angular, JavaScript, TypeScript, and Blazor. ✔ SaaS & Multi-Tenant Applications — Secure multi-tenant platforms with tenant management, role-based access, dashboards, workflows, subscriptions, and scalable application architecture. ✔ ASP.NET Core & Web APIs — RESTful APIs, ASP.NET Core Web API, backend services, third-party API integrations, authentication, authorization, and enterprise integrations. ✔ Legacy .NET Modernization — Modernizing legacy .NET Framework applications and migrating older architectures toward modern ASP.NET Core and .NET applications. ✔ Azure Cloud Applications — Azure App Services, Azure Functions, Azure DevOps, cloud-native application deployment, Docker, Kubernetes, and CI/CD pipelines. ✔ Modern Frontend Development — React, Angular, TypeScript, JavaScript, and Blazor-based interfaces integrated with secure .NET backends. ✔ Enterprise Architecture — Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, microservices, event-driven systems, and maintainable application architecture. ✔ Database & Performance Engineering — SQL Server, PostgreSQL, MySQL, MongoDB, Entity Framework Core, LINQ, Dapper, database design, optimization, and high-performance queries. ✔ Authentication & Security — JWT, OAuth2, Azure AD, role-based access control, secure API authentication. 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐒𝐭𝐚𝐜𝐤 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: C#, .NET Core, .NET 6/7/8, ASP.NET Core, ASP.NET Core Web API, REST APIs, GraphQL, Entity Framework Core, LINQ, Dapper, SignalR 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React, Angular, JavaScript, TypeScript, Blazor, Razor Pages 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: Microsoft Azure, Azure App Services, Azure Functions, Azure DevOps, Docker, Kubernetes, CI/CD 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: SQL Server, Azure SQL, PostgreSQL, MySQL, MongoDB 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞: Clean Architecture, Domain-Driven Design, CQRS, SOLID, Microservices, Event-Driven Architecture, N-Layered Architecture 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: I follow a security-first development approach, building applications with security, privacy, and compliance requirements considered from architecture through deployment. -HIPAA & Healthcare Security -GDPR & Data Privacy -SOC 2 Security Principles -OWASP Top 10 Protection -RBAC & Least Privilege -OAuth, JWT, SSO & MFA -API Security & Secure API Design -Multi-Tenant & Data Isolation -Encryption at Rest & in Transit -Audit Logging & Security Monitoring -Secrets Management -Secure SDLC & Vulnerability Prevention 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Cursor, Claude, AI-assisted development, debugging, code optimization, and development automation 𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: Property Management SaaS Platform Built a multi-tenant SaaS platform with tenant management, role-based dashboards, reporting, business workflows, and secure access using .NET Core, React, Angular, Azure, and SQL Server. Employee PDP Management System Developed planning modules, approval workflows, reporting functionality, authentication, authorization, and secure access management for an enterprise workforce management platform. School Management Platform Developed a complete .NET Core application with authentication, teacher and student portals, scheduling, administration dashboards, and business workflows using Clean Architecture and MySQL. Enterprise Internal Systems Integrated enterprise applications with Azure AD, SharePoint, HR platforms, insurance systems, and multiple third-party APIs while maintaining secure authentication and reliable data exchange. API & Payment Integrations Implemented integrations with Stripe, PayPal, CRMs, and enterprise APIs with secure authentication, API communication, error handling, and business workflow integration. I don't just focus on writing code. I first understand the business requirements, existing architecture, technical constraints, and scalability needs so the solution is designed correctly from the beginning. If you're looking for a Senior .NET Developer to build, modernize, scale, or maintain a SaaS, enterprise, or cloud-based application, send me your requirements.

I have been working as an Full-stuck (Front-end, Back-end) Developer since October 2020 (6+). I have been dealing with the some big projects. 1. PaymantTraker - application of payment getting (experience 3 month) (Angular 9, RxJs) 2. AIR(smartstream) - big fintex application.(experience more 4 years) (Angular 10 - 19, RxJs, NGRX, WebSocket, ngChart, Lyxon, Ag-Grid) 3. LMS - education platform (project from scratch) (Angular 15, RxJs, NgPrime) 4. Inventory - equipment storage platform as a fullstack developer (Angular 15, NodeJS16, postgress, Jest) 5. TRKR - tracker corporation of America(Angular 15, NestJs, postgress, Ag-Grid) 6. Astroideal - redisign project(Angular 16, NodeJs MySql, Puppitier) My responsibilities involve: * creating new applications with angular, * fixing bags, * refactoring code, * updating dependencies. In the projects I apply the following dependencies: Angular, React, NodeJs, NestJS, Postgress, SQL Typescript, NgRX, RXJS, Lyxon, NG Chart, AG-Grid and other. My level of English has been estimated as B2.

𝗜 𝗮𝗺 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟭𝟮+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗰𝗼𝘂𝗽𝗹𝗲𝗱 𝘄𝗶𝘁𝗵 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 in Python 3, FastAPI, Django/ Django REST Framework, Flask, JavaScript, NodeJS, ExpressJS, PHP/ Laravel, RESTful API, JWT(JSON Web Token), JSON, XML, Elasticsearch, Apollo/ GraphQL, AWS EC2, S3, ELB, REDIS, Amplify, Serverless Lambdas, Terraform, API Gateway, Azure, Google Cloud Platform, MySQL, Postgres, MongoDB, Supabase, Docker, Docker Swarm, Kubernetes k8, Microservices architecture, Linux, etc. My expertise extends to HTML5, CSS3, jQuery, Vue.js, React.js, Next.js, Nuxt.js, Angular(up to version 19), Bootstrap 4/5, TailwindCSS, Material UI, SCSS, SASS, etc. And, I have solid experience with DevOps, including CI/ CD, Git, etc. I'm proficient in Git for version control and utilizing Docker containers for seamless deployment. 𝗔𝗜 𝗧𝗼𝗼𝗹𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: 𝗖𝘂𝗿𝘀𝗼𝗿 𝗔𝗜 | 𝗥𝗲𝗽𝗹𝗶𝘁 | 𝗟𝗼𝘃𝗮𝗯𝗹𝗲 | 𝗚𝗼𝗛𝗶𝗴𝗵𝗟𝗲𝘃𝗲𝗹 | 𝗔𝗶𝗿𝘁𝗮𝗯𝗹𝗲 | 𝗕𝗮𝘀𝗲 𝟰𝟰 | 𝗢𝗽𝗲𝗻𝗔𝗜 | 𝗛𝘂𝗴𝗴𝗶𝗻𝗴 𝗙𝗮𝗰𝗲 | 𝗖𝗹𝗮𝘂𝗱𝗲 | 𝗖𝗼-𝗣𝗶𝗹𝗼𝘁 | 𝗠𝘆 𝘃𝗮𝗹𝘂𝗲-𝗮𝗱𝗱𝗲𝗱 𝘀𝗸𝗶𝗹𝗹𝘀: ✅Ability to collaborate effectively with a team of developers, QA's, etc. ✅Excellent problem-solving and analytical skills. ✅Strong work ethic and attention to detail. ✅Ability to learn quickly and adapt to new technologies. ✅Regular meetings on project status/ updates. ✅Scrum, Kanban, Agile, Jira, Jenkins, Experience. ✅Degree in the Computer Science field. I have used Git for version control for efficient collaboration, code versioning, branching, and merging. I also used platforms like GitHub, GitLab, and Bitbucket to provide additional collaboration features. I am fluent in English and possess excellent written and verbal communication skills. PS- As a full-stack Web & Mobile developer, I believe in complete transparency. My pricing is clear and upfront, no hidden fees, no surprise costs. I stand by my work with a portfolio of verified client reviews on Upwork that reflect consistent, honest delivery. When you're choosing a developer, trust and clarity should come standard, and that's exactly what I offer. Let's connect.

**TOP RATED PLUS | $300K+ Earned | 13,000+ Hours on Upwork** I help SaaS companies and enterprise teams build, modernize, and maintain .NET applications using ASP.NET Core, React, Angular, SQL Server, Azure, and AWS. I’m a Senior Full-Stack .NET Developer with 9+ years of experience working on SaaS platforms, enterprise web apps, healthcare systems, ERP tools, internal portals, APIs, and cloud-based products. Clients usually hire me when they need someone who can take over an existing product, understand the codebase quickly, fix issues, improve performance, build new features, and keep the system stable. I can help with: • ASP.NET Core, ASP.NET MVC, .NET Framework, and C# • React, Angular, JavaScript, and TypeScript • REST APIs, webhooks, and third-party integrations • SQL Server database design, queries, and optimization • Azure, AWS, cloud deployment, and CI/CD pipelines • Microservices and backend architecture • Legacy .NET modernization and codebase takeover • Bug fixing, refactoring, and performance improvement • Healthcare, ERP, SaaS, internal business tools, and workflow systems • Practical AI/API integrations for product features or internal operations **Core technologies:** .NET, ASP.NET Core, Web API, C#, React, Angular, TypeScript, SQL Server, MongoDB, MySQL, Azure, AWS, GCP, REST APIs, Microservices, Azure DevOps, CI/CD. **Key achievements:** • Delivered 20+ enterprise web applications using ASP.NET Core, React, and Angular • Optimized .NET APIs and SQL Server queries, reducing response times by up to 60% • Built backend systems handling 1M+ monthly API requests • Designed cloud-based architectures on Azure and AWS supporting 10K+ active users • Completed 13,000+ hours on Upwork across long-term enterprise contracts My focus is simple: clean code, stable systems, clear communication, and software that keeps working after launch. If you need a senior developer to build, fix, improve, modernize, or take over a .NET, React, or Angular application, I can help.

Full-stack/Backend-heavy engineer. I build and stabilize NestJS/Node APIs, rescue legacy PHP (Yii2/Symfony) codebases, and turn fragile or AI-generated prototypes into reliable production systems - focusing on performance, reliability, and clean delivery with CI/CD + Docker. Angular development for large apps (performance, components, state) I can help you with: • NestJS/Node backend & APIs - auth, integrations, queues, PostgreSQL, performance tuning • Legacy PHP rescue (Yii2/Symfony/Laravel) - bugfixes, new features, maintenance, refactoring, performance/security improvements (migration to TypeScript only if it makes sense) • CI/CD + Docker - GitHub Actions/Bitbucket pipelines, reliable deployments, AWS/GCP (build/release automation, reproducible environments) • Angular or React and Nextjs for large apps - performance, components, state management, integration with APIs • REST API, PostgreSQL, SQL optimization • Audit and refactor code produced by AI tools • Prototype to production hardening (AI-assisted code included) How I work: audit, plan, and regular updates. Core expertise: • Backend: NestJS, Node.js, TypeScript • APIs & Data: REST API, PostgreSQL, SQL optimization • Delivery: DevOps, Docker, CI/CD (GitHub Actions, Bitbucket Pipelines) • Cloud: AWS (EC2, S3), GCP (Cloud Run, Cloud Build) • Legacy: PHP (Yii2, Symfony) • Messaging: RabbitMQ, Kafka • Frontend: Angular, React, NextJs

❤️CLIENT-oriented React Developer available for LONG-TERM projects | 🔥 116 jobs on Upwork and 0 negative feedback | 💸 Remote full stack developer with full integration in your team that makes a profit | 🚫 No small fixes ❗️ No small fixed price work | To hear me and more about my soft skills, take a look at my video introduction and the video testimonials from my previous clients (attached to the portfolio) ABOUT ME I have more than 8 years of experience building high‑traffic react nextjs applications. I help teams turn complex ideas into profitable React Node.web and React Narive mobile apps, shipping MVPs up to 3x faster using AI. With excellent communication skills and a flexible working attitude, I have successfully collaborated with clients from 23 countries, consistently implementing a “can-do” approach MY KEY ACHIEVEMENTS ✔ As a React Frontend Developer I developed a React SaaS product that simplified construction estimations, reaching 98% accuracy and reducing project estimation timelines from weeks to minutes. ✔ As a Senior React Developer I led Frontend React Nextjs Project of a global $100M+ enterprise, leveraging React Nextjs frontend Typescript , and Redux ✔ As a Frontend React Developer I worked together with Python Developer to build a high-performance marketplace, handling 500K+ monthly users. I also ensured seamless API integrations, real-time updates, and secure transactions ✔ As a React Developer I worked on Frontend react nextjs of the real-time analytics dashboard also using Redux and D3.js, allowing businesses to track KPIs in real-time and increase operational efficiency by 35% ✔ While working as a React native app developer , I also created a React Native mobile app for real-time event invitations, handling 100K+ active users with 99.8% uptime ✔ Working in the HealthTech industry as a Senior Frontend React Developer JS , I delivered a HIPAA-compliant patient portal on React that cut virtual-visit check-in times from 25 minutes to 8 minutes, serving 40 K weekly sessions ✔ As a React Nextjs Frontend Developer I created a booking system for a company in the hospitality industry, integrating Stripe, Twilio SMS, and calendar syncing, resulting in 95% fewer missed appointments ✔ While working on a LogisticsTech SaaS , I contributed to a Frontend React Development of live shipment tracking system using WebSockets (it works across 4 continents) ✔ In the EdTech sector as a React Nextjs Frontend Developer I developed an interactive React-based learning platform with gamified features, increasing course completion rates by 38% and supporting over 200K concurrent learners ✔ As a Full Stack Developer React Node for a Travel platform, I implemented a dynamic search and booking flow that decreased booking abandonment by 42% and processed $15M+ in monthly reservations ✔ In the Real Estate sector, I developed an interactive 3D model viewer in React, allowing users to explore spaces and products in real time, increasing engagement and conversion rates by 40% ✔ As a Frontend React Developer for a PropTech startup project, I built a property management dashboard that automated 85% of tenant requests, cutting operational costs by $500K annually ✔ In a Media & Entertainment project I worked as Full Stack Developer AI and built and deployed a real-time recommendation engine using deep learning, personalizing video content for 250K+ daily users ✔ For a RetailTech platform, as a full stack developer react node , I developed a customer rewards portal that drove a 60% increase in repeat purchases ✔ Working in InsurTech, python full stack developer and I engineered a policy comparison tool with real-time data feeds, reducing policy selection time from 40 minutes to under 5 minutes for 100K+ users monthly ✔ In the AgriTech industry I worked as Full Stack Developer react node and created a react nextjs frontend dashboard for IoT sensor data, enabling farmers to optimize irrigation schedules and reduce water consumption by 25% across more than 1,500 farms As a Senior React Developer firebase , I not only have extensive experience with various JavaScript frameworks ( I have over 8 years of experience in frontend react development and back-end development, and 5 years in mobile app development ) but also hold Bachelor's degree in Engineering Software. I have built and optimized scalable, high-performance web apps using React.js and have developed React Native mobile applications with lightning-fast performance Need to launch fast? As a Full Stack Developer AI , I can take your MVP from zero to live in 4 weeks, leveraging AI to streamline workflows, cut engineering overhead by 30%, and accelerate your path to seed funding as I have already done it before With me, your next release ships on schedule, scales to hundreds of thousands of users, and lets you focus on growth Let's begin the collaboration with TOP RATED PLUS Full stack Developer React by clicking "Invite" or "Hire" on the top right ↗️ 07.04.26

I'm a skilled developer with 10+ years of experience in the software industry, especially within Microsoft, cloud & mobile app solutions. Tell me your needs and I will do my best to help you. Having previously worked with large enterprises as well as many smaller start-ups, I have a broad range of experience and knowledge of the full software delivery lifecycle. Why should you hire me: ✅ I work fast and achieve your goals on time ✅ My total programming experience is 10+ years ✅ 200+ successful projects delivered ✅ Solid logic reasoning and problem-solving skills ✅ Responsiveness and high-quality delivery ✅ Best software development practices using ✅ Highly skilled Full Stack Developer and Mobile Developer team for enterprise solutions I am not interested in "one-hour" or "one-day" jobs. I establish long-lasting relationships with my clients. I always consider a commitment to the result as the first priority. Since 2015, I've been working as CEO at Lvivity - a boutique dev shop that I founded. My team will deliver you the best service, communication, and also reliable, and scalable code that will fulfill your business needs. Here is a list of technologies I have experience with: 🔸 Programming - .NET C# Architect, PM, BA, CEO @ Lvivity.com 🔸 Databases - MSSQL, MySQL, MongoDB, Oracle, Flat files (CSV, XML) 🔸 Source Control - TFS, GIT, SVN 🔸 API's - Google, eBay, Facebook, LinkedIn, Twitter, Amazon 🔸 And much more: ASP.NET MVC / Core2 / WPF / Xamarin / SWIFT, React.Native, Flutter, Azure, AWS So, I guarantee my enthusiasm for work and fulfilling my project with inexpressible efforts.

🚀 Senior .NET Developer | Blazor | Angular | SaaS | APIs | 7,500+ Upwork Hours I help businesses build, improve, and maintain production web applications using .NET, ASP.NET Core, C#, Angular, Blazor, SQL Server, and cloud platforms. With 8+ years of professional experience, 7,500+ Upwork hours, and a 100% Job Success Score, I work comfortably with both new development and existing applications that need a developer who can understand the codebase quickly and start contributing without a long learning curve. My focus is simple: understand the requirement, solve the right problem, and deliver clean, maintainable code that works reliably in production. 💡 WHAT I CAN HELP WITH ✔ .NET / ASP.NET Core Development ✔ C# Application Development ✔ Angular & Blazor Development ✔ Full-Stack Web Applications ✔ RESTful APIs & Web API Development ✔ SaaS & Multi-Tenant Applications ✔ Enterprise Applications & Admin Dashboards ✔ Third-Party API Integrations ✔ Payment & Authentication Integrations ✔ Legacy .NET Modernization ✔ Performance Optimization & Troubleshooting ✔ Azure & AWS Cloud Development ✔ Application Maintenance & Long-Term Support ✔ AI / LLM Integration 🛠️ TECHNICAL EXPERTISE Backend: .NET, ASP.NET Core, C#, Web API, Entity Framework, LINQ Frontend: Angular, Blazor, React, TypeScript, JavaScript, HTML, CSS, SCSS Database: SQL Server, PostgreSQL, SQLite Cloud & DevOps: Azure, AWS, Azure DevOps, CI/CD, IIS, Linux, Git AI & Automation: OpenAI APIs, Claude / Anthropic APIs, RAG, AI Integration, AI Agents, n8n 🔧 HOW I WORK I'm comfortable working independently or as part of an existing engineering team. I can take ownership of a feature from requirements through development, testing, deployment, and production support, while also working within an established architecture and development workflow. Clients I've worked with consistently value my ability to understand requirements quickly, communicate clearly, solve technical problems efficiently, and deliver work reliably. I'm also comfortable working on long-term products where the goal isn't just to complete individual tasks, but to continuously improve the application while keeping the codebase stable and maintainable. If you need a senior .NET developer for SaaS development, Angular/Blazor, API development, application modernization, troubleshooting, or ongoing product development, feel free to send me the details. Thank you, Ankit C.

Microsoft Certified Professional having 10 years of proven hands on experience in full stack developmnet. ✅ Attention to smallest of details ✅ Problem solving attitude ✅ Good design patterns and best practices follower ✅ Excellent communication skills ✅ Reliable and quick turnaround time 📌 SKILLS ✔ ASP.NET Core, ASP.NET MVC, ASP.NET Web Forms, Web API, Blazor ✔ C#, VB.NET ✔ React.js, Node.js, Next.js, Redux, Angular, JavaScript, TypeScript, jQuery, Vue.js, ExtJS, Knockout.js ✔ AI/ML, Prompt Engineering (OpenAI - ChatGPT, Bard, GPT4), LLMs, STT/TTS, NLP, Computer Vision, Langchain ✔ Python (Django, Flask, DRF, FastAPI), PyTorch, TensorFlow, OpenCV, Keras, RAG ✔ Entity Framework, EF Core, Dapper, LINQ ✔ NopCommerce, Umbraco ✔ MS Dynamics CRM, Salesforce ✔ MS SQL Server, MySQL, MongoDB, Azure CosmosDB, SSIS, SSRS, SSAS ✔ Azure, Azure DevOps, CI/CD, AWS, Elastic Search ✔ HTML, CSS, Bootstrap, Responsive Web Design ✔ Automation test cases using Selenium, Cypress, Cucumber and Playwright ✔ Xamarin, Apache Cordova (Phonegap), Ionic, React Native mobile application ✔ Telerik Kendo, DevExpress/ DevExtreme, jQuery Datatable ✔ Third party API integrations like Google API, Social Media API, DocuSign, Payment Gateway ✔ Phone Call and SMS API, Twilio, SendGrid ✔ Git, BitBucket, JIRA, TFS, SVN, VSS I also have good experience working with mobile application development for iOS and Android. I am well aware of end-to-end process starting from development of mobile application to submission of final application to App Store/ Play Store. My core competency lies in complete end-to-end development and maintenance of small and large scale software development projects. I have good experience working with enterprise level n-tier, multi-tenant applications. I believe in long term business relationship that built on the basis of quality services. Thank you for taking the time to review my profile.

⭐️ Top Rated Plus - Top 1% of talent on Upwork 🕒 5,000+ hours on Upwork ✅ 8+ years of experience ✅ 50+ projects delivered ✅ Excelling in delivering Fortune 100-scale projects 8+ years of experience as a software engineer, and have worked at both small startups and large organizations. While I'm a proficient full-stack developer, my expertise is in building scalable Applications in (.NET Core, CQRS, Azure, API Services, ASP.NET MVC C#, MS SQL Server, VB.NET, EFCore, MongoDb, JIRA, Git, RabbitMQ, QuickBooks Integration, Micro Services, BitBucket, Unit Testing and DevOps). One recent project involved migrating a large legacy ASP MVC app to ASP.NET Core SaaS app. Responsible for implementing: - ASP.NET Core app with Core Identity for authentication and authorization - I also implemented JWT Token based claims and authentication. - REST API for WordPress clients - EF Core code first with SQL server - Background service for implementing long running tasks from API requests - SignalR for notifying clients of the status of the long running tasks - Stripe integration for one off card charging, and monthly subscriptions Another large project for a financial services firm involves: - working with a UI designer to redesign the UI (Bootstrap, jQuery, CSS, JS) - next phase to redesign back end with new REST API for a new Angular client Professionally, I have B.S (Software Engineering)