Web Application Development by Kellyn LiWeb Application Development by Kellyn Li
Web Application DevelopmentKellyn Li
Cover image for Web Application Development
Need a web application, a new product feature, or an MVP you can actually use?
I build and improve modern web applications, from focused features and internal tools to scoped MVPs.
With 5+ years of professional full-stack development experience, I can work across both frontend and backend — including React, TypeScript, .NET/C#, Node.js, REST APIs, SQL/NoSQL databases, and third-party integrations.
Depending on your project, I can help with:
Building new web application features
Developing a scoped MVP from an existing idea or specification
Extending or improving an existing application
Frontend and backend development
API and third-party service integrations
Database-backed functionality
Refactoring related to the feature being delivered
Testing and production-ready delivery I’m particularly comfortable with projects where the requirements are not perfectly defined yet. I can help clarify the technical approach and turn the idea into a practical implementation rather than simply coding against a ticket.
Best fit: SaaS products, internal tools, business applications, and other modern web applications.
Fixed-price projects available after scoping
Contact for pricing
Tags
C#
.NET
Node.js
React
TypeScript
Vue.js
Fullstack Engineer
Software Engineer
Web Developer
Service provided by
Kellyn Li Zoetermeer, Netherlands
Web Application DevelopmentKellyn Li
Contact for pricing
Tags
C#
.NET
Node.js
React
TypeScript
Vue.js
Fullstack Engineer
Software Engineer
Web Developer
Cover image for Web Application Development
Need a web application, a new product feature, or an MVP you can actually use?
I build and improve modern web applications, from focused features and internal tools to scoped MVPs.
With 5+ years of professional full-stack development experience, I can work across both frontend and backend — including React, TypeScript, .NET/C#, Node.js, REST APIs, SQL/NoSQL databases, and third-party integrations.
Depending on your project, I can help with:
Building new web application features
Developing a scoped MVP from an existing idea or specification
Extending or improving an existing application
Frontend and backend development
API and third-party service integrations
Database-backed functionality
Refactoring related to the feature being delivered
Testing and production-ready delivery I’m particularly comfortable with projects where the requirements are not perfectly defined yet. I can help clarify the technical approach and turn the idea into a practical implementation rather than simply coding against a ticket.
Best fit: SaaS products, internal tools, business applications, and other modern web applications.
Fixed-price projects available after scoping
Contact for pricing