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English
$
USD
I will fix next js bugs node js errors and vercel deployment issues
Nazarii
Level 2
2 orders in queue
5.0
5.0
Gig Summary
What people loved about this freelancer
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...
colsusername
New Zealand
I knew nothing of what we were doing, so Nazarii has made it easy so far so most appreciated. thanks. highly recommended
lumine2026
United States
Fixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
karesablagrove
United States
This is the fastest I have had an issue resolved via a freelance engagement. Communication throughout the process was excellent!
stanprzyuski
United States
As always, great communication, knowledge, and expertise from Nazarii. Couldn’t ask for anything more when it comes to help with a projects
About this gig
Broken UI, API error, failed build, hydration issue, or Vercel production problem?
I fix real issues in Next.js, React, Node.js, Tailwind CSS, and Vercel apps. I focus on the root cause, a clean fix, testing the affected flow, and a short handoff note.
What I can help with:
- UI, CSS, Tailwind, and responsive bugs
- React state and component logic issues
- forms, routing, and App Router bugs
- API routes and backend errors
- hydration and rendering problems
- database-related errors tied to the reported issue
- Vercel build, deploy, and production failures
Common fixes include Next.js build errors, runtime errors, broken components, form bugs, API route failures, missing env variables, deployment crashes, and SSR/client rendering problems.
Basic is for one small UI/component fix. Standard is for one logic, form, API, routing, or App Router bug. Premium is for deeper debugging like hydration, backend, database-related, build, or deployment issues.
Not included: rebuilding large app parts, redesigning pages, adding new features, or multiple unrelated bugs in one order.
Please message me with the error, expected result, steps to reproduce, screenshots, and logs.
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
- FromPoland
- Member sinceJan 2025
- Avg. response time1 hour
- Last delivery2 weeks
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 errors when they are directly tied to 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.
Does this include new feature development?
No. This gig is for fixing an existing issue. If you want a new API integration, Stripe flow, SaaS module, or AI feature, that should be scoped separately.
Do I get support after delivery?
Yes. I include a short post-delivery support window for the issue I fixed.
Reviews
13 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
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?C colsusername
Repeat Client
New Zealand
I knew nothing of what we were doing, so Nazarii has made it easy so far so most appreciated. thanks. highly recommended
$50-$100
Price
13 days
Duration
Helpful?L lumine2026
Repeat Client
United States
Fixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
$50-$100
Price
1 day
Duration
N 
Seller's Response
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?S stanprzyuski
Repeat Client
United States
As always, great communication, knowledge, and expertise from Nazarii. Couldn’t ask for anything more when it comes to help with a projects
$50-$100
Price
2 days
Duration
Helpful?
Reviews
13 reviews for this Gig
| (13) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
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?C colsusername
Repeat Client
New Zealand
I knew nothing of what we were doing, so Nazarii has made it easy so far so most appreciated. thanks. highly recommended
$50-$100
Price
13 days
Duration
Helpful?L lumine2026
Repeat Client
United States
Fixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
$50-$100
Price
1 day
Duration
N Seller's Response
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?S stanprzyuski
Repeat Client
United States
As always, great communication, knowledge, and expertise from Nazarii. Couldn’t ask for anything more when it comes to help with a projects
$50-$100
Price
2 days
Duration
Helpful?
