You will get Next.js bug fix & audit | React errors | TypeScript
Project details
Is your Next.js or React app blocked by a build error, TypeScript issue, broken UI, hydration warning, failed form, or deployment problem?
I focus on practical fixes: reproduce the issue, find the root cause, make the code change, and leave clear notes so you know what changed.
📦 Packages
Starter ($49) - one clear bug/blocker fixed in 1 day (build, TS, runtime, or UI). 1 revision.
Standard ($99) - quick app review + fix the main launch blocker (build, key page, API/form, deploy). 2 days, 2 revisions.
Advanced ($149) - diagnostic pass + several related fixes in one Next/React codebase, with deploy/build help. 3 days, 2 revisions.
What sets this apart: this is not a vague “web development” package. It is for debugging React/Next.js problems with a small, clear scope and code handoff.
âś… Next.js / React / TypeScript focused
âś… Source code changes included in every tier
âś… Responsive/UI fixes when part of the bug
âś… Short root-cause notes + what changed
âś… GitHub/Vercel handoff or notes for your team
đź“‹ Before order: share what is broken, expected behavior, screenshots/logs, repo or demo link. Rough notes are fine.
đź“‹ Build starts when repo/access and reproduction steps are clear.
I focus on practical fixes: reproduce the issue, find the root cause, make the code change, and leave clear notes so you know what changed.
📦 Packages
Starter ($49) - one clear bug/blocker fixed in 1 day (build, TS, runtime, or UI). 1 revision.
Standard ($99) - quick app review + fix the main launch blocker (build, key page, API/form, deploy). 2 days, 2 revisions.
Advanced ($149) - diagnostic pass + several related fixes in one Next/React codebase, with deploy/build help. 3 days, 2 revisions.
What sets this apart: this is not a vague “web development” package. It is for debugging React/Next.js problems with a small, clear scope and code handoff.
âś… Next.js / React / TypeScript focused
âś… Source code changes included in every tier
âś… Responsive/UI fixes when part of the bug
âś… Short root-cause notes + what changed
âś… GitHub/Vercel handoff or notes for your team
đź“‹ Before order: share what is broken, expected behavior, screenshots/logs, repo or demo link. Rough notes are fine.
đź“‹ Build starts when repo/access and reproduction steps are clear.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$49
|
Standard
$99
|
Advanced
$149
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 1 | 1 | 1 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$29Frequently asked questions
4 reviews
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JS
Jai S.
Feb 28, 2023
Figma to HTML using Bootstrap rows, columns & grids
Sergey did what we asked & did his best do re-create our design. He communicates well & is knowledgeable in Flask & Bootstrap!
JZ
John Z.
Feb 4, 2023
WP Image issue
Great work, solved our problem effortlessly. Recommended!
OK
Oksana K.
Nov 3, 2022
Design & develop a Landing page
Great job!
ho
helmut o.
Aug 13, 2022
4 Page Responsive Website Required
Very competent and diligent professional. Sergey went out of his way to understand our requirements and over delivered on expectations. Look forward to working with him again!
About Sergey
Full-Stack Web Developer | Business Websites & Web Applications
Almaty, Kazakhstan - 2:11 am local time
Work I take on:
- Full-stack: Next.js / React + Node.js APIs, auth, payments, integrations
- CMS work when that's what the project needs: WordPress, Squarespace, sometimes Webflow or Tilda
- I can build from your Figma file, or from a brief if that's all you have
- Updates and forms on a site that's already live
When we're done, your team should be able to change copy and pages without me. Written scope, preview links, milestones. Updates in Upwork messages. I check the site on a phone and that the form actually sends before I call it done.
Live sites are on my profile. I use React, Next.js, TypeScript, Node.js, PostgreSQL, Vercel - or I stay on the CMS you already have.
Steps for completing your project
After purchasing the project, send requirements so Sergey can start the project.
Delivery time starts when Sergey receives requirements from you.
Sergey works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff & access
Confirm tier ($49 / $99 / $149), repo/demo access, steps to reproduce, expected behavior, exact error/logs, and deploy target if relevant.
Reproduce the issue
Run the app/build locally or review the failing page/deploy so the bug is confirmed before changing code.