I will upgrade legacy dot net applications with secure API and cloud integration

R
rajatkhanna807
R
rajatkhanna807
Business Box

Level 1

5.0
5.0
upgrade legacy dot net applications with secure API and cloud integration
upgrade legacy dot net applications with secure API and cloud integration
Full Screen
upgrade legacy dot net applications with secure API and cloud integrationupgrade legacy dot net applications with secure API and cloud integration
Vetted by Fiverr Pro

Business Box was selected by the Fiverr Pro team for their expertise.

About this gig

Using an outdated .NET application? I can help you upgrade and modernise your ASP.NET or .NET Framework application into a secure, scalable, and cloud-ready solution.


With 10+ years of experience in C#, ASP.NET Core, SQL Server, and Azure, I specialise in:


# Upgrading legacy .NET applications to .NET Core / .NET 8

# Secure REST API & third-party API integration

# Azure cloud integration and deployment

# SQL Server optimisation and performance tuning

# Bug fixing, refactoring, and application stabilisation

# Authentication with JWT & OAuth2


I deliver clean, secure, and scalable solutions with reliable communication and long-term support.


Please contact me before placing the order to discuss your requirements.

  • Programming language

    • C#

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Design
    • Databases

  • Frontend framework

    • Angular
    • Bootstrap
    • jQuery

  • Backend framework

    • Other

  • AI & low/no code builders

    • Firebase Studio
    • Replit

Get to know Business Box

Business Box

WE BUILD SOFTWARE THAT GROWS YOUR BUSINESS

5.0(6)

Level 1

Business Box is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.

Vetted for

  • Website Development

  • FromIndia
  • Member sinceMay 2019
  • Avg. response time1 hour
  • Last delivery1 day

  • Languages

    English, Hindi, French
I am a professional ASP.NET Core full-stack developer with 10+ years of experience building secure, scalable, and high-performance web applications. I develop custom ASP.NET Core/MVC solutions, admin dashboards, REST APIs, and business portals using clean, production-ready code. From bug fixes and feature development to cloud deployment on Azure or AWS, I deliver reliable results with clear communication. Let’s build a powerful, future-ready .NET web solution. 🚀

My Portfolio

Reviews

2 reviews for this Gig
5.0

(2)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • C

    castool

    CA

    Canada

    5

    great work!!

    $600-$800

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • P

    paramjitsaimbhi

    CA

    Canada

    5

    great work!

    $400-$600

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
Reviews

2 reviews for this Gig
5.0

(2)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • C

    castool

    CA

    Canada

    5

    great work!!

    $600-$800

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • P

    paramjitsaimbhi

    CA

    Canada

    5

    great work!

    $400-$600

    Price

    1 day

    Duration

    Helpful?
    Yes
    No

Related tags