I will fix bugs and modernize your legacy react typescript or net application

S
sagardeep0019
S
sagardeep0019
Sagardeep
fix bugs and modernize your legacy react typescript or net application
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fix bugs and modernize your legacy react typescript or net application

About this gig

I'm a senior software developer with 8+ years of experience maintaining and modernizing production applications, most recently at Dayforce, an enterprise SaaS company.


I can help you with:

  • Investigating and fixing bugs in React, TypeScript, or .NET/C# applications
  • - Debugging tricky issues in unfamiliar or undocumented codebases
  • - Upgrading outdated dependencies and frameworks
  • - Refactoring legacy code into cleaner, maintainable patterns
  • - Improving performance and fixing memory or state management issues
  • - Adding tests around fragile areas of your code before making changes

My core stack is React, TypeScript, C#/.NET Core, Node.js/NestJS, SQL Server, PostgreSQL, and AWS. I'm comfortable jumping into someone else's code and working carefully to avoid breaking existing functionality.


Please share the repository, error details, and a description of the bug or legacy issue before ordering so I can scope the work accurately.

  • Programming language

    • TypeScript

  • Expertise

    • Debugging
    • Performance
    • Source control
    • Testing procedures

  • Frontend framework

    • Next.js
    • React.js

  • Backend framework

    • Express.js
    • NestJS

Get to know Sagardeep

Sagardeep

Senior FullStack Developer

  • FromCanada
  • Member sinceAug 2019
  • Avg. response time1 hour

  • Languages

    English, Punjabi, Hindi
Senior full-stack developer with 8+ years building and maintaining production applications with React, TypeScript, C#/.NET Core, SQL Server, and PostgreSQL. Most recently at Dayforce, delivering features on a high-traffic enterprise SaaS platform. I specialize in full-stack web apps, REST/GraphQL APIs, database design and optimization, and stepping into existing codebases to fix bugs and modernize legacy systems. Experienced with AWS, Azure DevOps, Redis, and Docker in production. Comfortable picking up new stacks quickly and communicating clearly with clients throughout a project.

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