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Fiverr Pro
English
$
USD
I will fix next js bugs, node js errors, and vercel deployment issues
Nazarii
Level 2
5.0
5.0
What people loved about this freelancer
bidrops
United Kingdom
Great work on Phase 1. He completed a detailed backend/security audit and verified the key production fixes properly. Communication was clear throughout, he...
tanzer81
Germany
I am very satisfied working with Nazarii. As always, he delivered the tasks quickly, professionally, and with great attention to detail. What I appreciate most...
karesablagrove
United States
This is the fastest I have had an issue resolved via a freelance engagement. Communication throughout the process was excellent!
About this gig
Broken UI, API error, failed build, or Vercel issue in your Next.js app?
I debug real problems in Next.js, React, Node.js, Tailwind CSS, and Vercel apps. I focus on finding the root cause, fixing the issue cleanly, and explaining what was wrong in plain language so you are not left with another mystery error.
What I can help with:
- UI, CSS, and responsive issues
- React state and component logic bugs
- API and backend errors
- forms, routing, and App Router issues
- hydration and rendering problems
- database-related bugs
- Vercel build, deploy, and production errors
This gig is best for one clear issue per order. Basic is for a small UI or styling fix. Standard is for one logic, form, API, or routing issue. Premium is for deeper debugging such as hydration, backend, database, or production deployment problems.
Please message me before ordering with the error, expected result, steps to reproduce it, and any screenshots or logs. Source code access through GitHub, GitLab, or a full ZIP archive is required before I start.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Nazarii
Nazarii
Next js Developer, Bug Fixes, Deployment, SaaS
Level 2
- FromUkraine
- Member sinceJan 2025
- Avg. response time1 hour
- Last delivery1 day
Languages
Ukrainian, Russian, Polish, English
Hi, I’m Nazarii, a Full Stack Developer from Ukraine focused on fixing, deploying, and extending Next js apps.
I help founders and small teams with Next.js bugs, Vercel or Render deployment issues, Node.js errors, API integrations, Stripe billing, Supabase, OpenAI features, dashboards, and lean SaaS MVPs.
If you have an existing app, repo, or product idea, I can help debug the issue, connect the missing piece, or get the app live with clean code and clear communication.
My Portfolio
Other Website Maintenance Services I Offer
FAQ
What do you need to start fixing the bug?
I need access to your source code, a clear description of the error, and steps to reproduce it. Screenshots or a short video are very helpful.
Can you start without repo access?
No. I need source code access through GitHub/GitLab or a full ZIP archive before I can begin debugging.
What counts as one bug?
One bug usually means one clear issue in a single flow, page, or deployment problem. If the fix touches multiple separate issues, I will review the scope before starting.
Can you fix bugs directly on a live website?
Yes, but it is safer to work on a local copy or staging environment first. Once tested, I will help you deploy the fix to the live site.
Does this include deployment problems?
Yes. Vercel build errors, failed deployments, missing environment variables, and production-only issues can be part of this gig when they are tied to one clear problem.
Do you work with databases and APIs?
Yes. I can debug backend logic, API routes, and database-related bugs when they are part of the reported issue.
Can you fix multiple bugs in one order?
Yes, but message me first. If the issues are separate, I will recommend a custom offer or a larger package so the scope is clear.
Do I get support after delivery?
Yes. I include a short post-delivery support window for the issue I fixed.
Reviews
9 reviews for this Gig
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| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B bidrops
Repeat Client
United Kingdom
Great work on Phase 1. He completed a detailed backend/security audit and verified the key production fixes properly. Communication was clear throughout, he explained the results well, and the final report was professional and easy to understand. The backend, database rules, access controls, and core...
$200-$400
Price
2 days
Duration
Helpful?T 
tanzer81
Repeat Client
Germany
I am very satisfied working with Nazarii. As always, he delivered the tasks quickly, professionally, and with great attention to detail. What I appreciate most is that he really understands the system and thinks about stability, architecture, and long-term quality instead of just rushing through tasks....
$50-$100
Price
8 days
Duration
Helpful?K karesablagrove
United States
This is the fastest I have had an issue resolved via a freelance engagement. Communication throughout the process was excellent!
Up to $50
Price
1 day
Duration
Helpful?L lccaton11
United States
Great work! Very fast delivery and every works perfectly.
$50-$100
Price
1 day
Duration
Helpful?L levyvdheuvel
Netherlands
Good and fast service
Up to $50
Price
1 day
Duration
Helpful?
Reviews
9 reviews for this Gig
| (9) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B bidrops
Repeat Client
United Kingdom
Great work on Phase 1. He completed a detailed backend/security audit and verified the key production fixes properly. Communication was clear throughout, he explained the results well, and the final report was professional and easy to understand. The backend, database rules, access controls, and core...
$200-$400
Price
2 days
Duration
Helpful?T tanzer81
Repeat Client
Germany
I am very satisfied working with Nazarii. As always, he delivered the tasks quickly, professionally, and with great attention to detail. What I appreciate most is that he really understands the system and thinks about stability, architecture, and long-term quality instead of just rushing through tasks....
$50-$100
Price
8 days
Duration
Helpful?K karesablagrove
United States
This is the fastest I have had an issue resolved via a freelance engagement. Communication throughout the process was excellent!
Up to $50
Price
1 day
Duration
Helpful?L lccaton11
United States
Great work! Very fast delivery and every works perfectly.
$50-$100
Price
1 day
Duration
Helpful?L levyvdheuvel
Netherlands
Good and fast service
Up to $50
Price
1 day
Duration
Helpful?
