You will get your Next.js, React, or full-stack app bug fixed fast and verified
Project details
Your app is throwing errors, a feature broke after a deploy, or a developer left you with something that won't run. I get it working, fast.
I'm a senior full-stack engineer who rescues Next.js, React, TypeScript, Node.js, and Python/FastAPI apps. I don't guess: I reproduce the bug locally, find the real root cause, patch it, and verify the fix end to end before you pay for it, then tell you plainly what caused it and how to avoid it next time.
Pick the tier that matches your situation: a single defined bug, a stubborn issue or a handful of small ones, or a full rescue of a broken or inherited app that needs to ship again. I run my own production apps on this exact stack, so I can own the whole thing, front end, back end, and the deploy, not just one layer.
Message me your repo or a screenshot of the error before you order and I'll confirm I can fix it. No guesswork, no surprises.
I'm a senior full-stack engineer who rescues Next.js, React, TypeScript, Node.js, and Python/FastAPI apps. I don't guess: I reproduce the bug locally, find the real root cause, patch it, and verify the fix end to end before you pay for it, then tell you plainly what caused it and how to avoid it next time.
Pick the tier that matches your situation: a single defined bug, a stubborn issue or a handful of small ones, or a full rescue of a broken or inherited app that needs to ship again. I run my own production apps on this exact stack, so I can own the whole thing, front end, back end, and the deploy, not just one layer.
Message me your repo or a screenshot of the error before you order and I'll confirm I can fix it. No guesswork, no surprises.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$500
|
Advanced
$900
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Frequently asked questions
About John
Senior Full-Stack, AI Engineer: Next.js / FastAPI / iOS
Honolulu, United States - 2:39 pm local time
I've shipped 15+ production web and mobile apps end to end — from the database to the deploy — including published iOS apps and SEO platforms serving tens of thousands of pages. I run my own infrastructure (Docker, CI/CD, PostgreSQL), so I diagnose across the whole stack instead of only the piece I'm handed.
What I do best:
Rescue and takeover: inherit a messy or abandoned codebase, stabilize it, ship the next thing
Full-stack build: Next.js, React, TypeScript, FastAPI/Python, Node.js, PostgreSQL, Supabase
AI integration: LLM-powered features, AI agents, and chatbots wired into real products
Payments and automation: Stripe, webhooks, and workflow automation with n8n
iOS: native Swift apps through App Store release
How I work: I move fast, explain things in plain language, and verify what I ship instead of hoping it runs. I've built and run my own products, so I think like an owner — I care whether the thing actually solves your problem, not just whether the ticket closes. Based in Hawaii, I overlap US working hours (especially the West Coast) and keep async projects moving around the clock.
If something's on fire or stuck, send me the details and I'll tell you honestly how I'd approach it and how long it'll take.
Steps for completing your project
After purchasing the project, send requirements so John can start the project.
Delivery time starts when John receives requirements from you.
John works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce & root-cause
I reproduce the bug locally and confirm the true root cause before changing anything.
Fix & verify
I implement the fix and test it end to end so the issue is actually gone, not just hidden.