You will get bugs fixed on your Next.js or React website
Project details
Something broken on your Next.js or React site? I find root causes, not band-aids. I reproduce the bug, fix it, explain what caused it in plain language and check for related problems nearby, so the same issue does not come back next month.
I build and operate production Next.js applications daily (trycapi.com, aplika.app.br), which means hydration errors, broken API routes, build failures, CSS chaos, slow pages and dependency conflicts are familiar territory.
How it works: you describe the problem and share access to the code. I reproduce it, fix it in a clean commit you can review, and send a short report of the cause and the fix. Larger tiers include a proactive hunt for related bugs and a performance pass (Core Web Vitals).
What you always get: clean reviewable commits, no mystery changes, a clear explanation of what was wrong, and fast turnaround. Not sure which tier fits your problem? Send me a message with a quick description and I will point you to the right one.
I build and operate production Next.js applications daily (trycapi.com, aplika.app.br), which means hydration errors, broken API routes, build failures, CSS chaos, slow pages and dependency conflicts are familiar territory.
How it works: you describe the problem and share access to the code. I reproduce it, fix it in a clean commit you can review, and send a short report of the cause and the fix. Larger tiers include a proactive hunt for related bugs and a performance pass (Core Web Vitals).
What you always get: clean reviewable commits, no mystery changes, a clear explanation of what was wrong, and fast turnaround. Not sure which tier fits your problem? Send me a message with a quick description and I will point you to the right one.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$300
|
Advanced
$600
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 3 | 6 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$75 - $300
Additional Revision
+$40
Fix Documentation
+$40
Detailed Code Comments
(+ 1 Day)
+$30Frequently asked questions
9 reviews
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AM
Alex M.
Apr 28, 2025
Find a way to make a maze with art
AB
Alexey B.
Jul 9, 2024
Mobile app testing users needed (iPhone only)
great job
NC
Nana C.
Dec 25, 2023
Complete and record the tasks of the application on geo Brazil
Quickly done work according to the task description! The freelancer did everything according to the instructions and was a good conversation partner on the task.
NH
Navya H.
Dec 18, 2023
3 Portuguese Speakers (Born in Brazil) for 2.5H Recording
Excellent freelancer. His quality of work, cooperation and communication was great.
I highly recommend him!
I highly recommend him!
RS
Ronit S.
Dec 15, 2023
Review GMB posting services
About Gilberto
FullStack Developer and Automation Specialist for Web AI and Ecommerce
Sao Paulo, Brazil - 11:22 am local time
Fun fact about me: I'm also a second-year medical student. That mix is my edge. I understand complex domains fast, I'm disciplined under pressure, and I build for real users, not for demos. It's how I ended up shipping a medical handoff app that real doctors use in a hospital.
Other live products I've shipped: an AI study platform with real-time transcription, a desktop productivity app for Mac and Windows, and an automation tool for Mercado Livre sellers that fills vehicle compatibility and fixes listings in bulk.
What I can do for you:
. Web apps and landing pages with Next.js, Supabase and Vercel, live in days
. E-commerce and Mercado Livre automation: bulk listings, compatibility, data cleanup
. Python scripts to automate repetitive tasks, data extraction and scraping
. AI integrations: chatbots, transcription, document processing
. WhatsApp automation and custom CRMs
I'm fluent in English and Portuguese. I work fast, communicate clearly and deliver working software, not just promises. Tell me your problem and I'll tell you exactly how I would solve it.
Steps for completing your project
After purchasing the project, send requirements so Gilberto can start the project.
Delivery time starts when Gilberto receives requirements from you.
Gilberto works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce
I set up the project and reproduce the bug, so we fix the real problem, not a symptom.
Root cause & Fix
I trace the root cause and fix it in a clean, reviewable commit.