Rajkumar K Vinayam  ·  Senior .NET Full Stack Developer  ·  5+ yrs

Mid-Level
Chennai5+ years experienceremote
Available within 48 hrs

About Rajkumar

Rajkumar K Vinayam is a seasoned .NET Developer with over 5 years of experience in developing and implementing web applications. He possesses strong expertise in C#, ASP.NET Core, and MS SQL Server, contributing to projects in Healthcare and Real Estate. His commitment to quality and efficiency is evident in his ability to deliver projects on time while integrating modern frameworks and technologies.

Core expertise

C#
language
10/10
MS SQL Server
database
10/10
.NET
backend
9/10
Angular
frontend
8/10
JavaScript
language
8/10

Additional skills(16)

C#ASP.NET CoreMS SQL ServerAngularJavaScriptASP.NET MVC.Net CoreOracleSignalRQuickBooks API

Why hire Rajkumar?

Production deploy authorityMentored 5+ juniors

Expert in C# and .NET technologies with a proven ability to deliver projects.

Strong problem-solving skills applied to various web applications.

Experience in integrating third-party services like AWS-RDS and QuickBooks API.

Actively shares best practices with team members to enhance quality and efficiency.

Successfully migrated critical data using SSIS for a government website management project.

Contributed to over 5 years of web application development and implementation.

Successfully designed and integrated APIs for Healthcare and Real Estate platforms using DotNet 7/6 and Angular 16.

Implemented real-time communication features (e.g., SignalR chat) for enhanced user interaction.

Project highlights(8)

Healthcare Patient Management – Software Engineer

Overview: Developed a web application for healthcare to help maintain patient information and history. Responsibilities: Designed the database using SQL Server to store patient details and history. Integrated APIs using DotNet 7 and Angular 16 for frontend and backend communication.

C#ASP.NET CoreMS SQL ServerAngularSignalR

Key outcomes:

  • Enabled secure maintenance of patient information with HIPAA compliance.

  • Facilitated real-time communication between healthcare professionals.

Company Rating Application – Software Engineer

Overview: Developed an application to track and evaluate company ratings for investor insights. Responsibilities: Designed the SQL Server database to store company information and complex financial formulas. Integrated APIs using DotNet 6 for data operations and calculations.

C#ASP.NET CoreMS SQL ServerJavaScript

Key outcomes:

  • Provided valuable insights for investors by tracking and evaluating company ratings.

  • Facilitated comprehensive data analysis through two distinct modules.

Real Estate Property Exchange – Software Engineer

Overview: Developed a Real Estate platform with admin, customer, and employer modules. Responsibilities: Designed and developed database and API components using C#, ASP.NET Core API, and MS SQL Server.

C#ASP.NET CoreMS SQL ServerAngularQuickBooks API

Key outcomes:

  • Enabled seamless property exchange between buyers and sellers with dedicated user modules.

Card Printing – Software Engineer

Card Printing — paid Windows app for visiting cards + invitations + IDs with PayPal payment integration. C# + Windows Application + MS SQL Server + PayPal.

C#Windows ApplicationMS SQL ServerPayPal Integration

Key outcomes:

  • Enabled users to create custom card templates for various purposes.

  • Facilitated secure payment processing through PayPal integration.

HR Management Process – Software Engineer

HR Management Process — HR tool for employee attendance + performance + interview + payroll + policies. C# + ASP.NET MVC + MS SQL Server + JavaScript.

C#ASP.NET MVCMS SQL ServerJavaScript

Key outcomes:

  • Streamlined HR operations by centralizing employee management tasks.

  • Improved efficiency in payroll processing and policy maintenance.

5+ years of industry experience

FinTech1 project
  • •Card Printing— Software EngineerC# · Windows Application · MS SQL Server · PayPal Integration
HR Tech2 projects
  • •HR Management Process— Software EngineerC# · ASP.NET MVC · MS SQL Server · JavaScript
  • •PMS Tool— Software EngineerC# · ASP.NET Core API · MS SQL Server · JavaScript
HealthTech1 project
  • •Healthcare Patient Management— Software EngineerC# · ASP.NET Core · MS SQL Server · Angular +1
InsuranceReported in resume

Ready to work with Rajkumar?

Onboard within 48 hours. No long hiring cycles, no recruiter middleman.

At a Glance

LocationChennai
Experience5+ years
Work moderemote
Direct hirePossible
Start within48 hours
From$1,725/ month

Single contract. Billed in USD.

Typically responds within 4 business hours.

5-day replacement guarantee
48-hour onboarding, single invoice
Direct chat — no recruiter middleman

Top Skills

C#
10/10
MS SQL Server
10/10
.NET
9/10
Angular
8/10
JavaScript
8/10
Seniority signals
Owns production deploysGreenfield architectSystem ownerCode reviewerMentor / leads juniors
VerifiedVetted by Witarist
Technical skills assessed & verified
Background & identity checked
English communication verified
Ready to onboard in 48 hours

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Rajkumar K Vinayam

.NET Developer