I will fix react nextjs nodejs and API bugs fast

P
paulopierrondi
P
paulopierrondi
Paulo P.
fix react nextjs nodejs and API bugs fast
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fix react nextjs nodejs and API bugs fast

About this gig

Is a reproducible bug blocking your React, Next.js, Node.js or API workflow? I will diagnose and fix a bounded issue in your existing codebase, verify the result, and leave a clear handoff.


What you get:

- Focused diagnosis of the reported issue

- Code changes limited to the agreed scope

- Validation steps or test evidence

- A short summary of root cause, fix and remaining risk

- Revisions within the original package scope


Good fit: UI or rendering errors, broken form flows, API failures, authentication or integration defects, data-mapping bugs, build/runtime errors and small regressions.


Before ordering, send the affected code, expected versus actual behavior, error logs, reproduction steps, stack/version and access constraints. Never send passwords in chat. Use Fiverr's order requirements for essential access.


Not included: new product development, redesign, large refactors, production deployment, paid third-party services or issues that cannot be reproduced. If the problem is larger than the selected package, I will explain the required scope change before proceeding.

  • Programming language

    • JavaScript

  • Expertise

    • Debugging
    • Performance
    • Databases
    • Testing procedures

  • Frontend framework

    • Next.js
    • React.js

  • Backend framework

    • Express.js
    • Node.js

Get to know Paulo P.

Paulo P.

Full Stack Developer APIs AI Automation

  • FromBrazil
  • Member sinceOct 2021
  • Avg. response time1 hour

  • Languages

    Portuguese, English
I build and fix focused web products, APIs and automations that are easy to test and operate. My work spans React, Next.js, Node.js, TypeScript, Python, REST/GraphQL integrations and AI-assisted workflows. I help with reproducible bugs, API failures, contained SaaS features, CRM automation and handoff-ready fixes. I bring 15+ years across enterprise platforms, cloud architecture and regulated operations. My work includes AgenticosCore, CantuStudio and FaithSchool. Every delivery starts with clear scope and acceptance criteria, includes validation evidence, and ends with a concise handoff.

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