Passionate full stack developer with more than 17 years of experience in designing, developing, and supporting software projects. I love to take up challenges and convert them into opportunities and achievements for our clients.   I have great experience in building small and big distributed high load applications. I can create high-quality and stable applications using new technologies. Technical skills: • C#, ASP.NET, VB.NET, MVC 5, .NET Core 2/3/5,Blazor • Entity Framework 4.6+, NHibernate, ADO.NET, Linq to Sql,Dapper • MS SQL Server 2005 - 2017, Oracle, Mongo, Cosmos db, MSSQL Compact • VisualStudio 2017-19• WCF, NServiceBus • Telerik, Devexpress, Kendo UI • Visual Studio 2019, ASP.NET Core 3.1 • JavaScript, jQuery, KnockoutJS • Angular JS, React JS • HTML5, XML, XSL, Bootstrap   • Agile, Scrum, TDD Database: -SQL Server,MySQL,Oracle,MongoDB - Designing database - Indexing Strategies and optimization - Table partitioning - SQL Server Integration Services (SSIS) - SQL Server Analysis Services (SSAS) - SQL Server Reporting Services (SSRS) - MySql- MS Access • Issue management tools: Team Foundation Server, Atlassian-JIRA, and ConnectWise • Excellent code reviews and code Debugging skills. • Windows applications in C# • Send automated mass emails using SendGrid and Onesignal with asp.net core on demand and run as batch Source Control: * Git * Team Foundation Server (TFS) * SVN * Bitbucket

I help companies stabilize, modernize, and extend production .NET applications. I am a senior .NET and C# developer with 13 plus years of experience working on existing enterprise codebases in C#, ASP.NET Core, ASP.NET Web API, SQL Server, Azure, Angular, and React. Most of my work is not greenfield. It is the hard part. Legacy .NET Framework apps, slow APIs, fragile integrations, performance bottlenecks, data issues, and new features that need to ship without breaking what already works. I am comfortable with long running projects, messy code, and complex business logic. If you need someone who can step into an existing system and make safe, useful changes, that is the work I do best. What I can help with ASP.NET Core, C#, and .NET backend development REST API development, third party integrations, authentication, and background jobs Legacy modernization from .NET Framework, ASP.NET MVC, and Web API to modern .NET SQL Server schema design, stored procedures, query tuning, and data fixes Azure deployments, Azure DevOps, CI CD, and production support Angular or React front ends integrated with .NET APIs Bug fixing, refactoring, performance tuning, and scaling existing systems When AI is actually useful, I also build AI workflow automation and RAG systems inside existing .NET applications. That includes OpenAI API integrations, document extraction, internal knowledge search, summarization, approval workflows, logging, fallbacks, and human in the loop review. Top Rated on Upwork with 100 percent Job Success, 100K plus earned, and 7900 plus hours worked.

🏆 Accelerated 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | 100% 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 Rate | 𝐑𝐢𝐬𝐤 𝐅𝐫𝐞𝐞 𝐓𝐫𝐢𝐚𝐥 I help SaaS companies and enterprise teams build scalable, cloud-native applications using C#, .NET Core 8, ABP.io, ASP.NET Zero, and Azure. If you need a reliable architect-level developer who builds clean, high-performance systems or can rescue/upgrade an aging application, you’re in the right place. For over 10 years, I’ve delivered enterprise-grade platforms, multi-tenant SaaS products, mission-critical APIs, and comprehensive front-end ecosystems (Angular, React, Vue). I also specialize in modernizing legacy systems, including Classic ASP, .NET Framework, outdated monoliths, and poorly structured applications, into modern, modular, or microservice-ready .NET Core architectures using ABP.io and ASP.NET Zero. 𝑾𝒉𝒂𝒕 𝑰 𝑫𝒆𝒍𝒊𝒗𝒆𝒓: • SaaS platforms & enterprise back-ends (.NET Core 6/7/8, ABP.io, ASP.NET Zero) • Legacy modernization (Classic ASP → .NET Core, WebForms → Angular/React) • Cloud-ready deployments using Azure (App Services, Functions, SQL, DevOps CI/CD) • High-performance APIs & microservices • Front-end applications (Angular, React, Vue, Blazor) • Clean architecture, SOLID, secure authentication/authorization 𝑾𝒉𝒚 𝑪𝒍𝒊𝒆𝒏𝒕𝒔 𝑯𝒊𝒓𝒆 𝑴𝒆: • 22,000+ Upwork hours & 100% Job Success Rate • Clear communication, structured updates, and fast delivery • Deep expertise in complex enterprise workflows and large-scale systems • Clean, maintainable code that scales—no shortcuts, no fragile quick fixes If you’d like a dependable developer who can architect, build, or modernize your Dot NET/C# platform, let’s connect. Send me a message, and I’ll be happy to review your requirements. I even offer a risk-free initial consultation. 𝑻𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝑬𝒙𝒑𝒐𝒔𝒖𝒓𝒆: Top Skills (Primary): • .NET Core 8 • C# developer • ABP.io developer • ASP.NET Zero expert • SaaS platform development • Enterprise application development • Legacy modernization Classic ASP → .NET Core • Azure App Services • Azure Functions • Microservices architecture • Clean Architecture .NET • Angular developer (.NET backend) Secondary Skills (Use sparingly): • React developer • Vue.js developer • Blazor • Docker / Kubernetes • CI/CD Azure DevOps • SQL Server / PostgreSQL / MongoDB • REST APIs / GraphQL APIs • Multitenant SaaS • ABP commercial framework • ASP.NET Boilerplate

I am a .NET developer with extensive experience, including building diverse applications. While skilled as a full-stack developer, I focus on backend development and now specialize in working with .NET Core 3.0, particularly within Umbraco CMS. My skills are: ========== ✅.NET Framework and .NET Core ✅.MVC and MVC Core ✅ WPF and Winforms ✅Identity Server 4 ✅Blazor ✅ Umbraco CMS. ✅Strong knowledge of MS SQL-Server ✅Entity Framework ✅Telerik and Kendo UI My specialization revolves around crafting impeccable solutions using a diverse tech stack. Proficient in C#, ASP.NET MVC, ASP.NET Core MVC, ASP.NET Core, Angular, and React, I leverage these technologies to architect robust and scalable software systems. Microsoft .NET Development Skills: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ As a Full stack ASP.NET developer, I have decent expertise on Microsoft .NET development technologies: I have worked with the following technologies: ✅ .NET Development Data Providers: OLE DB, Oracle, ODBC, CData, Sybase, MySQL, Synergex, Firebird, Npgsql, ADO.NET, SQL Server Compact, dotConnect, SQL Server. ✅ ASP.NET Development CMS: Umbraco, Sitecore, Orchard, DNN, DotNetNuke, mojoPortal, Sitefinity, Kentico ✅ MySQL, SQL Server, Azure SQL, MongoDB, PostgreSQL ✅ Server Technologies: Linux, Ubuntu, RedHat, FreeBSD, Suse, AWS, Rackspace cloud, linode, heroku and Google App Engine ✅ .NET Development WEB SERVICES: OData, SOAP, JSON, REST, ASP.NET Web Services, WCF Data Services, WCF Services ✅ Cloud Computing Platforms: Amazon Web Services, Microsoft Azure ✅ ASP.NET Web Development Frontend Stack: ✅ Code Versioning Tools: Microsoft TFS, GIT, SVN, and Mercurial .NET Development Services Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✅ Custom ASP.NET Development ✅ .NET Software Development ✅ Web Apps Development ✅ Desktop Application Development ✅ ASP.NET Website Development ✅ Database Application Development ✅ ASP.NET Application Development with MVC ✅ 3rd Party API Integration with ASP.NET & Customization ✅ Secure WCF, RESTful, REST, Web APIs Development ✅ Real-time ASP.NET Application Development with SignalR ✅ Microservices Development with ASP.NET Core ✅.NET Application Migration with Legacy Systems ✅ Microsoft Azure Development Services ✅ .NET CMS Solutions ✅ ASP.NET Maintenance & support ✅ Electronic Medical Record System - EMR/EHR ✅ HRM/HRIS, Payroll & Employee Management ✅ Supply Chain (SCM) & Inventory Management ✅ Online Ordering ✅ Hotel & Restaurant ✅ Point of Sale – PoS

I am a full-stack web developer with 18+ years of software development experience. My focus technologies are ASP.Net (MVC, Web API, Razor Pages, Web forms) C#, VB.Net JavaScript, jQuery, HTML, CSS, Bootstrap CSS, Tailwind CSS, Material UI ReactJS, Signalr, Net MAUI, ML.Net Blazor Server Entity Framework and SQL Server. I have extensive experience of developing web applications for many industry verticals. I am a full stack developer capable of developing Web applications and Mobile applications (using React Native and .Net Maui). During my professional career I have been responsible for development software from scratch, upgrading legacy applications to latest tech stack, maintaining and enhancing existing applications developed by other developers. I provide simple and manageable solution for a complex business problem. I communicate regularly regarding the project progress and I focus on understanding the requirements clearly to avoid any confusion while developing features. Please do check my upwork on work history and portfolio as well.

Senior .net developer 10+ years of experience As the CEO of Bits Orchestra and an experienced asp.net core developer, I lead a top-tier software agency specializing in building cutting-edge web application & mobile application. With over 10 years in the industry, I bring a deep understanding of both technology and business. As a C# .NET Developer and Software Engineer - Angular & C#, I deliver high-quality, scalable solutions. My five-year tenure as a global software development consultant for Shaw Industries Group Inc. in Massachusetts sharpened my communication skills and technical expertise, ensuring seamless project delivery and client satisfaction. 🌟 Our Expertise We offer a comprehensive range of services to help your business succeed: ✔️Custom Software Development From full stack developer to specialized .NET solution, I create scalable and robust software tailored to your needs | ASP.NET development ✔️Kentico Xperience As an expert Kentico Developer, I deliver seamless CMS solutions for optimal content management and enhanced user experiences. ✔️UI/UX Design I design intuitive, user-friendly interfaces to boost customer engagement and satisfaction, ensuring your app or website stands out. ✔️QA, Testing, and Maintenance We provide thorough QA, rigorous testing, and ongoing maintenance to ensure your software is reliable and high-performing. ⚙️ Technologies We Use We work with the latest and most powerful technologies to deliver top-notch solutions: Front-End Software Development We create intuitive and efficient interfaces for web and mobile applications, ensuring high performance and user interaction. We use modern technologies to develop scalable and fast solutions that meet business requirements: React | React .NET | React Native | React TypeScript | Angular | Vue.js | .NET VueJS | Next.js Back-End Development | Senior Backend .NET Developer We develop reliable and scalable server-side solutions that ensure stable application performance and efficient data processing Microsoft .NET | .NET Core | ASP .NET | NodeJS | Nest JS | .NET API | .NET Backend Developer | .NET Core Angular | .NET Webform | .NET Developer | C# .NET Developer | C# | Java Developer | .NET Fullstack | .NET Full Stack Developer | .NET Development | .NET React | ASP.NET Core Developer | ASP.NET Developer | ASP .NET Developer | ASP NET Cloud Platforms | Microsoft Azure services We use leading cloud platforms to ensure scalability, reliability, and security of your applications. With solutions like Azure, AWS, and Firebase, we provide efficient infrastructure, process automation, and flexibility in deploying cloud-based solutions. Azure | AWS | Jenkins | Firebase | Azure Functions | Azure Serverless Mobile App Development We specialize in developing cross-platform mobile applications that deliver seamless user experiences on both iOS and Android. Using technologies like Flutter and React Native, we create efficient, high-performance mobile apps tailored to meet your business needs. Flutter | Flutter Developer | Mobile App Development | iOS Developer | React Native 🔧 Additional Skills and Expertise Full-Stack Developer C# .NET Developer Java Developer .NET Fullstack Developer Power Apps Developer ASP.NET Core Developer Senior .NET Developer Web Developer Kentico Developer .NET Development .NET Webform React Native Mobile App Development Travis .NET VueJS Product Manager Front End Developer Integration Consultant Syncfusion Full Stack Node.js React Typescript Java Developer Backend Developer Power Apps Developer Github CI/CD ⚡ What Sets Us Apart At Bits Orchestra, we ensure that each project is done right from the start with requirements analysis and post-project support. We aim to build long-term relationships with our clients, ensuring their projects evolve as their business grows. 💬 Get in Touch I’m always happy to help! If you’re looking for a free consultation or need assistance with your next software project, don’t hesitate to contact me. Let’s innovate together and drive your business forward!

I'm a professional Full-Stack Developer with extensive experience building high-quality applications across web, mobile, desktop, CRM, ERP, and various custom business solutions. I’m quick at understanding ideas and turning them into clean, scalable, and production-ready applications. ☑️ 8+ Years of Professional Experience ☑️ Top Rated Plus Freelancer on Upwork ☑️ 100% Job Success Rate ☑️ Proven Track Record Across 50+ Projects 🛠️ Technical Expertise ☑️Full-Stack Development Frontend: React.js, Vue.js, Next.js, JavaScript, HTML/CSS Backend: Node.js, Express.js, ASP.NET WebForms, ASP.NET MVC, ASP.NET Core, C# Databases: MS SQL, MySQL, PostgreSQL, Supabase, ADO.NET, Dapper ORM, Entity Framework APIs: REST APIs, Web API, Custom API Integrations Version Control: Git, GitHub ☑️Mobile App Development Android & iOS (Cross-Platform) Expo, React Native, Ionic (if applicable) API-driven mobile applications with cloud integration ☑️Cloud & DevOps Microsoft Azure, AWS, Google Cloud App Deployment, CI/CD Pipelines, Server Management Automation & Browser Extensions Selenium (Web/Data Scraping & Automation) Chrome & Firefox Extensions (Messaging, Scraping, Custom Workflows) ☑️Payment & Third-Party Integrations Stripe, PayPal, Razorpay, HubSpot, and other API integrations 🌐 Specializations ☑️ Full-Stack Application Development (Web + Mobile) ☑️ CRM, ERP & Custom Business Solutions ☑️ Google BigQuery & Google Sheet Automation ☑️ Payment Gateway Integrations ☑️ High-performance APIs & Cloud Deployments 💡 Why Work With Me? I convert ideas into fully functional, well-architected applications. Strong focus on clean code, scalability, and performance. Excellent communication & on-time delivery. 100% client satisfaction is always my priority. Whether you need to build an application from scratch, add new features, fix issues, or maintain an existing system, I can help. I look forward to building a long-term partnership 🤝 – Mayur Fefar

⭐ Top Rated Plus | $400K+ Earned | 23,000+ Hours | 100% Job Success I help businesses modernize and scale .NET applications — turning slow, hard-to-maintain legacy systems into fast, secure, scalable platforms, without a risky full rewrite. From ASP.NET Web Forms migrations to enterprise systems running 300GB+ databases, I specialize in the complex, business-critical work most developers avoid. Increasingly, clients bring me in for a second reason: they want AI capabilities — document intelligence, smart search, workflow automation — and their legacy system can't support them. I fix the foundation and build the AI on top. Over 14 years, I've delivered 89+ projects on Upwork with consistent 5-star results, including a 1,300+ hour engagement with a single client who kept coming back. What I bring to your project: 🔹 Legacy .NET Modernization — Migrating ASP.NET Web Forms & .NET Framework apps to ASP.NET Core / .NET 8, incrementally and without breaking what already works 🔹 SQL Server Performance Specialist — Complex queries, stored procedures, query optimization, and scaling databases to 300GB+ 🔹 AI Integration on Legacy Systems — Production OpenAI/LLM features: document intelligence, RAG search over your business data, OCR pipelines. Built on a modernized foundation, not bolted onto a fragile one 🔹 Full-Stack .NET Depth — ASP.NET (Web Forms, MVC, Core), C#, Web API/REST, Entity Framework, LINQ 🔹 Modern Front-End — React, Angular, Vue.js, Blazor, TypeScript, Tailwind, Bootstrap 🔹 Cloud & DevOps — Azure (primary), plus AWS & GCP experience, Azure DevOps, CI/CD pipelines, Git 🔹 Integrations — Payment systems (Stripe subscription billing for a healthcare platform), third-party APIs, MongoDB, CosmosDB Why clients rehire me: ✅ Clear, proactive communication (0–4 hour response time) ✅ Reliable availability in US time zones — I regularly work Eastern and Pacific hours ✅ Clean, maintainable, well-tested code ✅ Enterprise-standard code reviews, team leadership, and developer mentoring ✅ Solving hard problems — not just "making it work" Not sure where to start? I offer a fixed-fee, two-week Legacy Health Audit: your slowest queries analyzed, a risk map of your codebase, a phased modernization roadmap, and an AI-readiness assessment — so you know exactly what's wrong and what it will cost to fix, before you commit to anything. Whether you need a legacy system modernized, a SQL Server database that's buckling under load, AI features your current stack can't deliver, or a senior engineer to unblock your team — let's talk. Describe your application and I'll tell you specifically how I'd approach it. I'll respond within 4 hours.

I help businesses build scalable, secure and high-performance .NET applications using ASP.NET Core, MVC, Web API and Azure. With 17+ years of experience in software development, I specialize in designing and delivering enterprise-grade web and backend solutions using Microsoft technologies. I’ve worked across multiple .NET frameworks, helping clients build new platforms, modernize legacy systems and integrate complex APIs with confidence. 🔹 Core Backend Expertise ASP.NET Core / ASP.NET MVC / .NET Core ASP.NET Web API & RESTful Services C#, .NET Framework, Microservices Architecture SQL Server, MySQL, Database Design & Optimization Azure Cloud, Deployment & Application Hosting 🔹 Frontend & Full-Stack Capabilities React.js, Next.js, jQuery ASP.NET Ajax Cross-platform mobile apps using FlutterFlow Node.js & Supabase for modern backend services 🔹 What I Help Clients With Building new web applications from scratch Modernizing legacy ASP.NET applications Developing secure REST APIs & integrations Improving performance and database efficiency Long-term maintenance & scalable architecture I focus on clean architecture, maintainable code and clear communication, so projects stay predictable and easy to scale. If you’re looking for a reliable senior .NET developer who can take ownership and deliver quality results, let’s connect.

I am a Senior .NET Developer and Acumatica Developer with 7+ years of experience. As a .NET Developer, I work with C#, ASP.NET Core, ASP.NET MVC. As an Acumatica Developer, I specialize in Acumatica customization and development. I work with both new and existing .NET applications and Acumatica systems. My work includes new development, existing application changes, bug fixing, API integrations, legacy application modernization, and Acumatica customization. .NET Developer | .NET Development Services: • C#, .NET, .NET Core, and .NET Framework • ASP.NET Core and ASP.NET MVC • ASP.NET Web API and REST API development • ASP.NET Web Forms • SQL Server and stored procedures • Entity Framework and Entity Framework Core • LINQ and ADO.NET • Third-party API integrations • Blazor and Razor Pages • Microsoft Azure and Azure DevOps • New feature development • .NET bug fixing and troubleshooting • Existing .NET application maintenance • Performance improvements • Legacy .NET application support • .NET application modernization and migration I have strong experience working with existing .NET applications and legacy .NET systems. A large part of my work involves understanding established codebases, troubleshooting problems, making changes safely, and extending applications without disrupting existing functionality. I have worked extensively with ASP.NET Web Forms, ASP.NET MVC, and older .NET Framework applications, as well as ASP.NET Core and modern .NET versions. This experience allows me to maintain older applications and modernize them when an upgrade or migration is required. Acumatica Developer | Acumatica Development Services: • Acumatica customization and development • Custom Acumatica screens • DAC and DAC Extensions • Graph Extensions • Custom actions and business logic • Acumatica REST API development and integrations • Third-party API integrations with Acumatica • Acumatica Generic Inquiries (GI) • Acumatica reports and dashboards • Acumatica workflows and automation • Sales Order customization • Service Order customization • Appointment and Invoice customization • Acumatica Field Service customization • Manufacturing and Distribution customization • Custom tables and data providers • Acumatica bug fixing and troubleshooting • Existing Acumatica customization changes I have strong experience working with existing Acumatica customizations and new Acumatica development requirements. I can understand existing customization code, troubleshoot issues, modify functionality, customize screens and reports, add business logic, and develop integrations with external applications and APIs. When standard Acumatica functionality does not meet a business requirement, I can develop the required customization while working with the existing Acumatica setup and business process. Experience: I have 7+ years of professional development experience as a .NET Developer and Acumatica Developer and have been working with freelance clients since 2019. I have completed 55+ jobs on Upwork, earned $30K+ on Upwork, maintained a 100% Job Success Score, and consistently received 5-star client feedback. I have also completed 200+ additional projects across other freelance platforms. Core .NET Technologies: ASP.NET Classic, ASP.NET Web Forms, ASP.NET MVC, ASP.NET Core, ASP.NET Core MVC, .NET Framework, .NET Core, .NET 6, .NET 8, .NET 10, C#, SQL Server, Entity Framework, Entity Framework Core, LINQ, ADO.NET, Razor Pages, Blazor, Angular, React, REST API, ASP.NET Web API, HTML, CSS, JavaScript, Bootstrap, Microsoft Azure, Git, and Azure DevOps,Acumatica. If you are looking for a Senior .NET Developer or Acumatica Developer, send me your requirements. I can help with .NET development, C#, ASP.NET Core, ASP.NET MVC, REST API development, legacy .NET modernization, Acumatica development, Acumatica customization, and Acumatica integrations. I will review your requirements, ask the right questions, and provide a clear and realistic time estimate before starting.