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English
$
USD
I will fix bugs and optimize performance in your nextjs or react app
Opeyemi O
4.8
4.8
About this gig
Is your NextJS or ReactJS app throwing errors, loading slowly, or crashing in production? I will find the root cause and fix it fast.
I am a full-stack TypeScript developer with proven results fixing and optimizing NextJS and ReactJS applications. I do not guess. I diagnose systematically and deliver clean, tested code with a full explanation of what was wrong and what was fixed.
WHAT I FIX:
- NextJS build errors, hydration issues, routing bugs
- ReactJS state bugs, hook errors, component crashes
- TypeScript errors and type mismatch issues
- Slow API responses and performance bottlenecks
- Express or Node.js backend integration problems
- Auth issues with Clerk, NextAuth, Supabase, Firebase
WHAT YOU GET:
- Root cause analysis (not just a patch)
- Fixed and fully tested code
- Clean source code with comments
- Written explanation of the bug and the fix
- Fast response and clear communication throughout
I have 4.8 stars from real clients including US and South Africa-based startups. Message me before ordering if your bug is complex and I will tell you honestly if I can solve it.
Get to know Opeyemi O
Opeyemi O
Fullstack Software Developer
- FromNigeria
- Member sinceSep 2024
- Avg. response time1 hour
- Last delivery9 months
Languages
English, Spanish
I am a full-stack TypeScript developer with a 4.8-star rating and proven results for clients in the US, Morocco, South Africa, and India. I build and fix web applications that work in production, not just locally. My core stack is NodeJS, NestJS, ExpressJS, NextJS, ReactJS, and TypeScript. I have built SaaS apps, REST APIs, mobile backends, and fixed critical bugs for startups and indie founders. I respond fast, communicate clearly, and never ghost mid-project. Message me and I will tell you exactly how I can help.
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Other Software Development Services I Offer
FAQ
What do I need to provide before you start?
Share your GitHub repo or a zip file, describe the bug in detail, and include any error messages or screenshots. The more context you give, the faster I can fix it.
Can you work with third-party APIs or custom integrations?
Yes. I can debug issues with REST APIs, GraphQL, Stripe, Firebase, Supabase, and other third-party integrations within your NextJS or ReactJS app.
What if my bug is not fixed after delivery?
I offer revisions on every package. If the bug persists after my fix, message me and I will investigate further until the issue is resolved.
What kind of bugs can you fix?
I can handle a wide range of issues, from small bugs like API errors or broken routes to more complex problems in your Django or Flask applications.
Do you offer support after the project is completed?
Yes! I offer post-project support to ensure everything is running smoothly and provide guidance as needed.
What if my issue is complex?
No worries! Message me with details, and I’ll evaluate it for free before you place an order.
Do you offer deployment assistance?
Yes! I can deploy your app on AWS, Heroku, DigitalOcean, or any cloud service.
Reviews
5 reviews for this Gig
| (4) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W wadierachad
Morocco
Excellent work! He quickly identified and fixed the issues in my Next.js/React app, improved responsiveness across devices, and boosted overall performance. Very knowledgeable, professional, and easy to communicate with. I’m very happy with the results and will definitely work with him again. Highly recommended!
Up to $50
Price
1 day
Duration
Helpful?M micheals_yen
United States
Opeyemi did great job. He's Reactjs/Typescript PRO, solved my project issues in a couple hrs. High Recommended!
Up to $50
Price
1 day
Duration
Helpful?K kananel0
Repeat Client
South Africa
Highly recommend 🐬🔌
Up to $50
Price
3 days
Duration
Helpful?N namandokania
Repeat Client
India
Liked the service
Up to $50
Price
2 days
Duration
Helpful?K kananel0
Repeat Client
South Africa
Highly recommend
Up to $50
Price
2 days
Duration
Helpful?
Reviews
5 reviews for this Gig
| (4) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W wadierachad
Morocco
Excellent work! He quickly identified and fixed the issues in my Next.js/React app, improved responsiveness across devices, and boosted overall performance. Very knowledgeable, professional, and easy to communicate with. I’m very happy with the results and will definitely work with him again. Highly recommended!
Up to $50
Price
1 day
Duration
Helpful?M micheals_yen
United States
Opeyemi did great job. He's Reactjs/Typescript PRO, solved my project issues in a couple hrs. High Recommended!
Up to $50
Price
1 day
Duration
Helpful?K kananel0
Repeat Client
South Africa
Highly recommend 🐬🔌
Up to $50
Price
3 days
Duration
Helpful?N namandokania
Repeat Client
India
Liked the service
Up to $50
Price
2 days
Duration
Helpful?K kananel0
Repeat Client
South Africa
Highly recommend
Up to $50
Price
2 days
Duration
Helpful?
