You will get professional frontend bug fixes for React, Next.js, Vue, and TypeScript
Project details
Are you experiencing frontend bugs, JavaScript errors, broken layouts, API integration issues, or performance problems?
I will investigate and fix issues in React, Next.js, Vue.js, JavaScript, and TypeScript applications. With over 10 years of frontend development experience, I have worked on enterprise SaaS platforms, mobile web applications, admin dashboards, error monitoring, and performance optimization.
My service can help with:
• React, Next.js, and Vue.js bugs
• JavaScript and TypeScript errors
• API integration and data display issues
• Responsive layout and browser compatibility problems
• Forms, state management, and user interaction bugs
• Sentry errors and frontend performance issues
• Vite, build, and deployment-related frontend problems
My process includes reproducing the issue, identifying the root cause, implementing a clean fix, testing related functionality, and explaining the changes.
Please message me before ordering so I can review the issue, confirm the scope, and recommend the appropriate package. New feature development, complete redesigns, and backend changes are quoted separately.
I will investigate and fix issues in React, Next.js, Vue.js, JavaScript, and TypeScript applications. With over 10 years of frontend development experience, I have worked on enterprise SaaS platforms, mobile web applications, admin dashboards, error monitoring, and performance optimization.
My service can help with:
• React, Next.js, and Vue.js bugs
• JavaScript and TypeScript errors
• API integration and data display issues
• Responsive layout and browser compatibility problems
• Forms, state management, and user interaction bugs
• Sentry errors and frontend performance issues
• Vite, build, and deployment-related frontend problems
My process includes reproducing the issue, identifying the root cause, implementing a clean fix, testing related functionality, and explaining the changes.
Please message me before ordering so I can review the issue, confirm the scope, and recommend the appropriate package. New feature development, complete redesigns, and backend changes are quoted separately.
Programming Languages
HTML & CSS, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$50
|
Standard
$120
|
Advanced
$250
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 2 |
Bug Investigation | - | - | - |
Fix Documentation | - | - | - |
Detailed Code Comments | - | - | - |
Optional add-ons
You can add these on the next page.
Bug Investigation
(+ 1 Day)
+$3
Fix Documentation
+$1
Detailed Code Comments
+$1Frequently asked questions
About Menghuan
Senior React & Next.js Developer | TypeScript, Node.js, SaaS,Nest.js
Shanghai, China - 8:23 pm local time
I’m a senior JavaScript/TypeScript developer with 10+ years of frontend experience and hands-on full-stack development experience.
I can help you with:
• React, Next.js, Vue.js and TypeScript development
• Responsive web pages and admin dashboards
• REST API integration and backend development with Node.js/NestJS
• Bug fixing, performance optimization and code refactoring
• Authentication, forms, permissions and data management
• Vercel and Docker deployment
• Long-term SaaS product maintenance
I have led a 10-person development team and worked on enterprise SaaS products, including a multilingual system for an international energy client. I’m comfortable communicating in English and collaborating remotely across time zones.
You can expect clear communication, realistic estimates, clean code and regular progress updates.
Send me your requirements or current issue, and I’ll help you identify the next step.
Steps for completing your project
After purchasing the project, send requirements so Menghuan can start the project.
Delivery time starts when Menghuan receives requirements from you.
Menghuan works on your project following the steps below.
Revisions may occur after the delivery date.
Review and Reproduce the Issue
I will review the provided information, run the project, and reproduce the issue in the relevant environment.
Investigate the Root Cause
I will inspect the affected components, application state, API requests, console errors, and related code to identify the root cause.