I will fix bugs optimize and upgrade vue react spring boot apps

Q
qihaipeppa
Q
qihaipeppa
Hai Q
fix bugs optimize and upgrade vue react spring boot apps
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fix bugs optimize and upgrade vue react spring boot apps
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fix bugs optimize and upgrade vue react spring boot appsfix bugs optimize and upgrade vue react spring boot appsfix bugs optimize and upgrade vue react spring boot apps

About this gig

Struggling with annoying bugs, slow performance, or outdated code in your web application? I am here to help!


I am a Senior Full-Stack Engineer & Tech Lead with 18+ years of enterprise software delivery experience, holding a PMP certification. I specialize in troubleshooting, refactoring, and optimizing modern web applications.


️ What I Can Do For You:

Bug Fixing: Resolve frontend (Vue 2/3, React, Angular) & backend (Spring Boot, PHP, Python) errors.

Performance Optimization: Optimize page load speed, bundle size, database queries, and rendering.

Framework Migration: Upgrade Vue 2 to Vue 3, Element UI to Element Plus, or modernize legacy codebases.

API & Logic Fixes: Debug RESTful APIs, JWT/RBAC auth, state management, and CORS issues.

Code Review: Refactor code for better maintainability, readability, and clean architecture.


Tech Toolkit:

Vue 2/3, React, Angular, TypeScript, Spring Boot, PHP, Python, MySQL, Element UI/Plus, Ant Design.


Why Choose Me?

18+ Years Experience as a Tech Lead

Clean, Well-Documented Code

Fast Diagnosis & Clear Communication


Please message me before placing an order so we can discuss your issue in detail!

  • Programming language

    • PHP

  • Expertise

    • Debugging
    • Design
    • Databases
    • Source control
    • Testing procedures

  • Frontend framework

    • Angular
    • Bootstrap
    • jQuery
    • Semantic-UI
    • Vue.js

  • Backend framework

    • CakePHP
    • Django
    • FastAPI
    • Laravel
    • Yii

  • AI & low/no code builders

    • Bubble

Get to know Hai Q

Hai Q

Senior FullStack Developer Technical Lead

  • FromChina
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    English, Chinese
I am a senior full-stack developer and technical lead with 18 years of experience in software delivery. I specialize in building reliable web, API, and micro-frontend solutions using Vue, React, and Spring Boot. I take ownership of the entire lifecycle from architecture to deployment, ensuring high-quality results for complex enterprise projects.

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