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Shivkumar J.

Shivkumar J.

FullStack ASP NET Core, C# | Angular React Vue.js | WebAPI | MSSQL

Tired of explaining your product to developers who only think in tickets and tasks❓ I work like a long-term tech partner, not a short-term freelancer. 🎯 Top Rated | 100% JSS | Senior Full-Stack .NET Engineer (7+ years) Enterprise web applications, legacy migrations, and long-term support using ASP.NET Core, C#, Blazor, MVC, Web API, Angular, React, and Vue.js. Hello, I am Shivkumar, a Senior Full-Stack Engineer with 6+ years of experience building and maintaining enterprise-grade applications across finance, logistics, healthcare, and SaaS. 💡 Technical Stack: ✅ Backend: ASNET Core, C#, RESTful APIs, SignalR, Clean Architecture, Microservices ✅ Frontend: ASPNET MVC, Razor Pages, Blazor, Angular, VueJs, CSS3, Bootstrap, JavaScript ✅ Database: SQL Server, Entity Framework Core ✅ Tools: Git, Docker, xUnit, Moq ✅ Deployment: Azure, AWS, IIS, CI/CD Pipelines ✅ Legacy migrations (Web Forms / older NET → modern NET/Blazor/Full Stack) 💡 Why Choose Me? ⚡Proven Expertise: Delivered 5+ NET projects with measurable results. ⚡Scalable Solutions: Build applications that grow with your business. ⚡Client-Centric Approach: Clear communication, timely delivery, and dedicated support. ⚡Future-Proof Development: Write clean, maintainable, and well-documented code. ⚡Continuous Learning: Always updating my skills to stay ahead in the ever-evolving tech landscape. 💡𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼 𝗕𝗲𝘀𝘁 (𝗔𝗻𝗱 𝗘𝗻𝗷𝗼𝘆 𝗦𝗼𝗹𝘃𝗶𝗻𝗴): 📌 Full-Stack Development → Build and maintain responsive applications using ASPNET Core with Blazor, Angular, and React. 📌 Legacy Migration → Seamlessly migrate Web Forms/MVC to modern .NET + React/Angular/Blazor giving your users a 2026 experience. 📌 Performance Engineering → Fix outdated frontend bottlenecks and optimize SQL queries for high data loads. 📌 API Development → I build RESTful APIs that are actually 𝐑𝐞𝐬𝐭𝐟𝐮𝐥 ~ secure, documented, and easy for your mobile or web teams to use. 💡𝗪𝗵𝗼 𝗜’𝗺 𝗮 𝗚𝗼𝗼𝗱 𝗙𝗶𝘁 𝗙𝗼𝗿 🎯 Teams needing a true Full-Stack lead who can jump between C# and modern JavaScript/TypeScript frameworks. 🎯 Companies with existing NET applications that require a frontend refresh (Angular/React) or a full stack migration. 🎯 Projects requiring long-term enhancements and a sense of ownership from the developer. 🎯 Clients seeking reliable, predictable delivery over cheap, short-term labor. 💡𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 🟢 Available for part-time or full-time contracts 🟢 Reliable 𝗨𝗦/𝗘𝗨 timezone overlap 💡 Let’s Work Together! 📌Whether you need a custom web application, a scalable backend, or a dynamic frontend, I’m here to bring your vision to life. Let’s discuss your project and create something extraordinary! Message me your project details, I’ll 𝐫𝐞𝐩𝐥𝐲 𝐢𝐧 <𝟏 𝐡𝐨𝐮𝐫 with a clear plan and honest recommendations Thanks!! 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Full-Stack NET Developer, Backend NET Developer, ASPNET Core, C#, ASPNET MVC, Web API, RESTful APIs, Microservices, Clean Architecture, SignalR, Blazor Server, Blazor WebAssembly, Razor Pages, Angular, React, Responsive Web Design, HTML5, CSS3, JavaScript, Bootstrap, SQL Server, Query Optimization, Stored Procedures, Database Optimization, Entity Framework Core, Database Migration, Legacy System Migration, Web Forms Migration, Performance Optimization, Azure, Azure DevOps, AWS, CI/CD Pipelines, Docker, IIS, Agile Development, ADONET, AJAX

🇮🇳Varanasi, India$20/hr100% JSS5.00 (9)Since Jul 2018

Earnings and projects

MRR
$68

Last 6 months ÷ 6

World#144,334 / 412k
🇮🇳Country#15,140 / 45.9k
Revenue, last 30 days
$0

Last 6 months: $406

Total earnings
$23k

Billed in all: $24k

World#131,334 / 412k
🇮🇳Country#18,010 / 45.9k
Per project
$1.4k

$406 in the last 6 months

World#99,110 / 412k
🇮🇳Country#12,301 / 45.9k
Projects, last 6 months
1
0% fixed100% hourly
World#128,096 / 412k
🇮🇳Country#14,379 / 45.9k
Projects in all
16

Across 19 contracts

42% fixed58% hourly
World#155,089 / 412k
🇮🇳Country#21,636 / 45.9k

Earnings, last 30 days

$24kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$23,750$24,000$24,250$24,500Oct 9Oct 24Nov 8

Skill rankings: Top 22% in ASP.NET MVC

Ranked by MRR among everyone on Upwork with the skill.

  1. #223Blazor656 freelancers · 🇮🇳 #89Top 34%
  2. #348ASP.NET Web API1,447 freelancers · 🇮🇳 #126Top 24%
  3. #581ASP.NET MVC2,619 freelancers · 🇮🇳 #252Top 22%
  4. #602ASP.NET Core2,272 freelancers · 🇮🇳 #212Top 26%
  5. #679ASP.NET2,819 freelancers · 🇮🇳 #253Top 24%
  6. #751.NET Framework2,944 freelancers · 🇮🇳 #207Top 26%
  7. #755Microsoft SQL Server2,759 freelancers · 🇮🇳 #194Top 27%
  8. #1,578Bootstrap6,899 freelancers · 🇮🇳 #449Top 23%