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I will fix your react or next js bug in 24 hours
Schmiemandev
Level 2
5.0
5.0
Gig Summary
About this gig
Need a React, Next.js, or Full-Stack bug fixed within 24 hours?
I specialize in diagnosing and fixing issues across modern React and Next.js applications, whether it's a front-end rendering glitch or a broken backend integration.
Types of Issues I Fix:
- Frontend & UI: State/prop bugs, hydration mismatches, responsive layout glitches (Tailwind, CSS), and console warnings.
- Backend & APIs: Next.js API route errors, Server Actions, database queries (Supabase, Firebase), and auth failures.
- Integrations: Stripe payment webhook issues, checkout flow bugs, and third-party API breakages.
- Builds & Setup: Environment variables, TypeScript errors, and Webpack/Vite build failures.
- Anything else: Send me a message and I will most likely be able to fix it too!
What You Get:
- Root-cause analysis and a clean, fully tested patch
- Git commit / pull request or a ZIP file with clear commit messages
- Inline code comments and summary documentation (Standard & Premium)
- Smoke testing for related flows (Premium)
100% refund if the issue cannot be reproduced.
Send me a quick message with your repo link or a description of the bug to get started!
Get to know Schmiemandev
Schmiemandev
Full Stack Web and Mobile Developer, Nextjs React and Flutter
Level 2
- FromNetherlands
- Member sinceJun 2023
- Avg. response time1 hour
- Last delivery3 months
Languages
English, Dutch, German, Spanish
Hi, I'm Sjoerd!
I am a Full-Stack Web and Mobile Developer specializing in high-performance applications using Next.js, React, and Flutter.
Whether you need a custom web app, a cross-platform mobile app, or rapid bug fixes, I deliver clean code and smooth user experiences.
Core Services:
Web Dev: Modern Next.js & React sites
Mobile Dev: iOS & Android apps via Flutter
Bug Fixes: 24h React/Next.js fixes & optimization
Let's turn your vision into a production-ready product. Send me a message to get started!
My Portfolio
FAQ
What counts as a "small" vs "medium" bug in pricing?
If you have questions about the size of a bug, send a message to me! A small bug is like missing imports, CSS tweaks, or a small function not behaving properly. A medium bug is for example, a state issue or a failing build script. Anything larger? Please send me a message.
What information do you need from me?
A link to your repo (GitHub/GitLab) or a ZIP file, plus clear steps to reproduce the problem. Screenshots or Logs often make me work faster.
When will you reply to my message?
I’m based in Central Europe and answer new inquiries within 1 hour during my work window (09:00-20:00 CET). Outside those hours, I still reply within 8 hours, so you’re never waiting long.
Can you add a small feature while you’re in the code?
Yes! order the Tiny Feature extra (+€5) for tasks like adding a new prop, favicon, meta tag or GA4 ID.
Which stacks do you cover?
React 18, Next JS 13+/App Router, JavaScript, TypeScript, Tailwind CSS, Bootstrap, Node/Express APIs. If your stack is different, please send me a message to see if its possible for me to work with yours!
What if the bug can’t be reproduced?
You get a full refund and a short report outlining what I tried, so you’re time is not wasted.
Are you OK with NDAs?
Absolutely. Send yours or ask for my standard NDA. Either way, if needed, your code stays private.
Reviews
11 reviews for this Gig
| (11) | ||
| (0) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S 
smitske
Netherlands
Great communication and delivers high-quality workmanship.
$800-$1,000
Price
5 weeks
Duration
Helpful?K khaled_elsadek
United Arab Emirates
Exceptional work, thank you !
$400-$600
Price
1 day
Duration
Helpful?K khaled_elsadek
United Arab Emirates
Excellent work
$50-$100
Price
6 days
Duration
Helpful?M 
michaelwalke518
Japan
After speaking to several different developers, we were lucky enough to find Sjoerd. He was incredibly responsive and did a brilliant job of understanding our needs. He recognised certain set up issues that were causing us problems and solved them quickly and effectively. His clear communication and...
$100-$200
Price
4 days
Duration
Helpful?I 
imhameed
Saudi Arabia
Fixed my issue fast
Up to $50
Price
1 day
Duration
Helpful?
Reviews
11 reviews for this Gig
| (11) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S smitske
Netherlands
Great communication and delivers high-quality workmanship.
$800-$1,000
Price
5 weeks
Duration
Helpful?K khaled_elsadek
United Arab Emirates
Exceptional work, thank you !
$400-$600
Price
1 day
Duration
Helpful?K khaled_elsadek
United Arab Emirates
Excellent work
$50-$100
Price
6 days
Duration
Helpful?M michaelwalke518
Japan
After speaking to several different developers, we were lucky enough to find Sjoerd. He was incredibly responsive and did a brilliant job of understanding our needs. He recognised certain set up issues that were causing us problems and solved them quickly and effectively. His clear communication and...
$100-$200
Price
4 days
Duration
Helpful?I imhameed
Saudi Arabia
Fixed my issue fast
Up to $50
Price
1 day
Duration
Helpful?
