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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...
tanzer81
Germany
I am very satisfied with Nazarii’s work. He is reliable, professional, and understands the system extremely well. Tasks are implemented carefully, with great...
tanzer81
Germany
Excellent experience working with Nazarii. He is highly professional, reliable, and technically very strong. Throughout the entire project, he was always solution-oriented,...
tanzer81
Germany
I am very happy with my continued collaboration with Nazarii. Once again, he completed all tasks quickly, professionally, and with great attention to detail. Thank you!
lumine2026
United States
Fixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
About this gig
Broken Next.js page, API error, failed build, or Vercel issue? I fix focused problems in existing Next.js, React, and Node.js apps. You receive the code changes, testing of the affected flow, and a short explanation of the fix. Basic: one small UI, CSS, Tailwind, or component issue. Standard: one scoped logic, form, API, routing, or simple deployment configuration issue. Premium: one scoped issue requiring deeper build, hydration, backend, database, or Vercel investigation. Packages depend on the work required, not just the error name. A simple environment-variable fix does not automatically require Premium. New features, redesigns, major rewrites, and unrelated bugs are separate work. Send the error, expected result, and steps to reproduce it before ordering. I will confirm the scope and price. A paid diagnostic review is available when investigation is needed before I can quote a fix; it is not required for every order.
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Get to know Nazarii
Nazarii
Next js Developer, Bug Fixes, APIs and SaaS
Level 2
- FromPoland
- Member sinceJan 2025
- Avg. response time1 hour
- Last delivery1 week
Languages
Ukrainian, Russian, Polish, English
I'm Nazarii, a full-stack developer working with Next.js, React, Node.js, and TypeScript. I fix bugs, deploy apps, and add APIs, Stripe payments, Supabase, and focused AI features. I also build clearly scoped SaaS MVPs. My portfolio includes event-platform development, e-commerce, and AI-powered tools. I agree on the scope before starting and provide tested changes, source code, and handoff notes. Send the issue or feature you need, and I'll confirm the next steps.
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.
What do revisions and post-delivery support cover?
Revisions cover adjustments within the agreed scope. I include 7 days of support after delivery for reproducible defects caused by my changes. New features, unrelated bugs, and changes to the agreed requirements are quoted separately.
Reviews
17 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
Germany
Ongoing collaborationI 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....
$100-$200
Price
12 days
Duration
N 
Seller's Response
Helpful?T tanzer81
Germany
Ongoing collaborationI am very satisfied with Nazarii’s work. He is reliable, professional, and understands the system extremely well. Tasks are implemented carefully, with great attention to stability and long-term quality. Communication is always clear, fast, and efficient. Great cooperation as always. Thank you!
$200-$400
Price
5 days
Duration
Helpful?T tanzer81
Germany
Ongoing collaborationExcellent experience working with Nazarii. He is highly professional, reliable, and technically very strong. Throughout the entire project, he was always solution-oriented, communicated clearly, and took responsibility even when unexpected technical challenges came up. Thank you!
$400-$600
Price
7 weeks
Duration
Helpful?T tanzer81
Germany
Ongoing collaborationI am very happy with my continued collaboration with Nazarii. Once again, he completed all tasks quickly, professionally, and with great attention to detail. Thank you!
$200-$400
Price
4 days
Duration
Helpful?L lumine2026
United States
Ongoing collaborationFixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
$100-$200
Price
1 day
Duration
N Seller's Response
Helpful?
Reviews
17 reviews for this Gig
| (17) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T tanzer81
Germany
Ongoing collaborationI 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....
$100-$200
Price
12 days
Duration
N Seller's Response
Helpful?T tanzer81
Germany
Ongoing collaborationI am very satisfied with Nazarii’s work. He is reliable, professional, and understands the system extremely well. Tasks are implemented carefully, with great attention to stability and long-term quality. Communication is always clear, fast, and efficient. Great cooperation as always. Thank you!
$200-$400
Price
5 days
Duration
Helpful?T tanzer81
Germany
Ongoing collaborationExcellent experience working with Nazarii. He is highly professional, reliable, and technically very strong. Throughout the entire project, he was always solution-oriented, communicated clearly, and took responsibility even when unexpected technical challenges came up. Thank you!
$400-$600
Price
7 weeks
Duration
Helpful?T tanzer81
Germany
Ongoing collaborationI am very happy with my continued collaboration with Nazarii. Once again, he completed all tasks quickly, professionally, and with great attention to detail. Thank you!
$200-$400
Price
4 days
Duration
Helpful?L lumine2026
United States
Ongoing collaborationFixed my forms and Vercel deployment successfully. Very responsive. I highly recommend and look forward to working with him again.
$100-$200
Price
1 day
Duration
N Seller's Response
Helpful?
