I will fix bugs in your react, next js or node js application

H
helbertqueiroz
H
helbertqueiroz
Helbert Q.

About this gig

Is your React, Next.js or Node.js app broken and you need it fixed fast?


I am a Senior Full-Stack Engineer with 12+ years of experience. I have

built and maintained large-scale SaaS platforms in production I know

exactly where bugs hide and how to fix them without breaking anything else.


WHAT I CAN FIX:


- Broken UI components and layout issues

- API errors, failed requests and CORS problems

- Authentication and session bugs

- Database query errors and performance issues

- Build failures and deployment errors

- TypeScript and runtime errors

- State management issues (Redux, Zustand, Context)


HOW IT WORKS:


1. You share your code or repository access

2. I investigate the root cause

3. I deliver the fix with a clear explanation

4. You get working code no guessing, no back and forth


WHAT YOU GET:


- Bug fixed and tested

- Written explanation of what caused the issue

- Recommendations to prevent it from happening again


I treat every project with the same ownership I apply to my own products.


Message me before ordering if you are unsure which package fits your needs.

Get to know Helbert Q.

Helbert Q.

Senior Full Stack Dev

  • FromBrazil
  • Member sinceOct 2018
  • Avg. response time16 hours
  • Languages

    English, Portuguese, Spanish
Senior Full-Stack Engineer with 12+ years building SaaS platforms, CRMs, and mobile apps for fintech and edtech companies. I specialize in Node.js, NestJS, React, React Native, PostgreSQL, and AWS. I have led projects from architecture to production — including real-time systems, API integrations, and cross-platform mobile apps. I deliver clean, well-structured code on time. Whether you need a bug fixed, an API built, or a full product shipped, I treat every project with the same ownership and attention to detail. Let us build something great together.

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