You will get Fix a critical bug in your React, React Native or Node.js app
Project details
You'll get a real fix for a real bug — not a band-aid. I'm a full-stack engineer with 10+ years across React, React Native, and Node.js, currently building production software at Fox Corporation. When something's crashing, broken, or behaving wrong, I find the actual root cause, fix it cleanly, and confirm it works in your environment. I've spent years diagnosing tricky issues inside existing codebases under deadline — locating the real problem fast and shipping code I'd be comfortable maintaining myself. You'll get the fix, a short explanation of what was wrong, and confidence it won't resurface. Clear communication throughout, no scope creep, and a clean handoff.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
PSD to HTML, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$600
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 1 | 1 | 1 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$20Frequently asked questions
17 reviews
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NR
Natasha R.
Aug 18, 2024
Expert Mobile App Developer
BJ
Bogdan J.
Jan 10, 2024
Urgent ReactNative Mobile App Project
BS
Bradley S.
Oct 27, 2023
Rebuild Talkative Timer app
Luis was very professional, worked fast to meet a deadline and was very easy to work with.
DH
Dmytro H.
Sep 11, 2023
Senior Android Engineer with Native Experience
CM
Carla M.
Aug 30, 2023
Front End Designer with Ionic Experience Needed to make Small Change in IOS/Android App
Luis successfully completed my project to fix a bug in my iOS and Android apps. He was quickly able to locate the troublesome Ionic code, make updates, and relaunch both apps in the app stores. He is a terrific communicator (in English). I plan to use him again for app updates and would highly recommend his work.
About Luis
Senior Full-Stack Engineer / React / Node / TypeScript Web & Mobile
Florianopolis, Brazil - 6:54 pm local time
Over 19 projects and 440+ hours on Upwork I've shipped React/React Native apps, refactored messy iOS/Android codebases, killed production bugs under deadline, and rebuilt apps from the ground up. Clients describe me as fast, professional, and easy to work with — and several have come back for repeat work.
What I can help you with:
• Full-stack web apps — React, Next.js, Vue, Node.js, TypeScript
• Mobile — React Native, native iOS/Android, Ionic
• Backend & APIs — Node, PHP/Laravel, REST integrations
• Rescuing or refactoring an existing codebase that's gone off the rails
• Modern, performance-minded builds — including Web3 / on-chain integrations
How I work: clear scope up front, regular updates so you're never wondering where things stand, and code I'd be comfortable maintaining myself. I'd rather tell you the hard truth about a timeline than over-promise and miss it.
Steps for completing your project
After purchasing the project, send requirements so Luis can start the project.
Delivery time starts when Luis receives requirements from you.
Luis works on your project following the steps below.
Revisions may occur after the delivery date.
1
Review your bug report, reproduce the issue, and confirm the root cause.
2
Implement a clean fix and test it against your environment.