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

Mid-Level
5+ years experienceremote
Available within 48 hrs

About Rajkumar

Rajkumar K Vinayam is a . NET Developer with 5+ years of experience in full-stack development, specializing in C#, ASP.

Has shipped
NET Core

5+ years of commercial experience in

FinTechHR TechHealthTechInsurance

Skills(17)

C#.NETMS SQL ServerAngularJavaScriptASP.NET CoreSignalRQuickBooks APIWindows ApplicationPayPal IntegrationASP.NET MVCASP.NET Core API.Net CoreSSISOracleLINQADO.NET

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.

Industry experience

FinTech

1 project
  • •Card Printing— Software EngineerC# · Windows Application · MS SQL Server · PayPal Integration

HR Tech

2 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

HealthTech

1 project
  • •Healthcare Patient Management— Software EngineerC# · ASP.NET Core · MS SQL Server · Angular +1

Insurance

Reported in resume

Ready to work with Rajkumar?

Schedule an interview and onboard within 48 hours. No long hiring cycles.

At a Glance

Experience5+ years
Work moderemote
Starting from₹1.4 L/mo
Direct hirePossible
Start within48 hours
From₹1.4 L/ month

Single contract. No agency markup confusion.

Typically responds within 4 business hours.

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