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I will debug and fix react node js and legacy javascript bugs
Khiem N.
About this gig
Is your existing web app broken? I debug and fix React, Node.js/Express, and legacy JavaScript (vanilla JS, jQuery, AJAX) without unnecessary rewrites.
I'm a Senior Full-Stack Engineer and Tech Lead with 11 years across multiple stacks and domains, including nearly 10 years working on drawing applications for the oil and gas industry.
I can resolve React rendering, state, form and UI bugs; Node.js API, async and authentication errors; broken AJAX calls; frontend/backend integration; and scoped CSS or browser issues.
Every package includes an agreed code fix, focused verification, updated files or a Git commit/PR, and short handover notes. I reproduce the issue, find the root cause, apply a targeted patch, and re-test the affected behavior. A package is not diagnosis alone.
Please send the error, reproduction steps, expected results and tech stack before ordering. Complex or non-reproducible issues may need a custom quote. New features, full rewrites, major upgrades and production deployment are outside the listed packages.
Get to know Khiem N.
Khiem N.
Senior Full Stack Engineer and Tech Lead
- FromVietnam
- Member sinceMay 2021
Languages
English
I'm a Senior Full-Stack Engineer and Tech Lead with 11 years of hands-on software development across multiple stacks and business domains. My deepest experience is nearly 10 years building and maintaining drawing applications for the oil and gas industry. I work across React, JavaScript/TypeScript, Node.js, Go, .NET, APIs, databases, and AI applications. I investigate complex defects, deliver focused fixes, and lead technical decisions with reliability and maintainability in mind.
FAQ
Does Basic include code changes?
Yes. Basic includes one agreed, reproducible bug fix, focused verification, and a short handover.
What counts as one bug?
One distinct defect with reproducible steps and agreed expected behavior. Unrelated defects or features require separate scope.
Can you fix React and Node.js issues together?
Yes, within the agreed Standard or Premium scope, or through a custom quote.
What if the issue cannot be reproduced or is larger than expected?
I will report the blocker and agree on a revised scope through Fiverr before doing extra work.
Is deployment included?
No. Deployment needs a separately agreed extra or custom order with appropriate access and rollback scope.
