You will get Fix your Replit, Lovable, Bolt, or v0 vibe coded app bugs fast
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Project details
You built something on Replit, Lovable, Bolt, Base44, Manus AI, Claude Code, Cursor, v0, or any other vibe coding tool — and now it’s not working. Emails aren’t sending. Auth is stuck in a loop. Payments are failing. Deployment keeps breaking. The API won’t connect.
I specialize in reading AI-generated code, quickly identifying what’s actually broken, insecure, or blocking production — and fixing it properly without rebuilding everything from scratch.
What I fix:
• Authentication issues (Supabase, Firebase, BetterAuth)
• Email delivery problems (Resend, SendGrid, SMTP setups)
• Payment issues (Stripe, PayPal, Paddle, webhooks, subscriptions)
• Deployment failures (Vercel, Netlify, AWS)
• CORS errors and API connectivity issues
• Database issues (PostgreSQL, Supabase, Firebase, MongoDB)
• Row Level Security (RLS) policies and permission bugs
• Security audits (exposed keys, insecure APIs, auth flaws, misconfigurations)
• Broken APIs and backend connectivity
• General Next.js & React bugs in production apps
I work directly in your existing codebase, fix the root cause, improve the structure, and make it production-ready.
I specialize in reading AI-generated code, quickly identifying what’s actually broken, insecure, or blocking production — and fixing it properly without rebuilding everything from scratch.
What I fix:
• Authentication issues (Supabase, Firebase, BetterAuth)
• Email delivery problems (Resend, SendGrid, SMTP setups)
• Payment issues (Stripe, PayPal, Paddle, webhooks, subscriptions)
• Deployment failures (Vercel, Netlify, AWS)
• CORS errors and API connectivity issues
• Database issues (PostgreSQL, Supabase, Firebase, MongoDB)
• Row Level Security (RLS) policies and permission bugs
• Security audits (exposed keys, insecure APIs, auth flaws, misconfigurations)
• Broken APIs and backend connectivity
• General Next.js & React bugs in production apps
I work directly in your existing codebase, fix the root cause, improve the structure, and make it production-ready.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Localization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$150
|
Advanced
$350
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$30 - $100
Additional Revision
+$15
Fix Documentation
(+ 1 Day)
+$20
Detailed Code Comments
(+ 1 Day)
+$25Frequently asked questions
4 reviews
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MM
Mantas M.
May 29, 2026
Cloudflare Workers expert needed LLM visibility setup for B2B site
Hired Biplob to build a Cloudflare Worker that serves clean Markdown versions of our Webflow pages for AI search visibility (ChatGPT, Claude, Perplexity citations). He delivered well beyond scope at a very fair price.
What made him stand out:
— Before I even hired him, he had already deployed a working prototype on my actual site content. No other applicant did this. It removed the main risk of the engagement.
— Technically sharp. He correctly identified that the naive HTML→Markdown approach would hit Cloudflare Workers' CPU limits, and architected around it using HTMLRewriter streaming + a lightweight conversion pass. He explained the trade-offs clearly to a non-technical client.
— The final deliverable went past the brief: hand-tuned stripping for Webflow-specific quirks (button hover duplicates, slider image dedup, responsive variants), locale-aware routing across five language versions, robust 404 handling, a documented purge mechanism, proper test coverage, and clear inline documentation. Code was clean, modular, and well-commented.
— Communication was excellent throughout. Responsive (usually within hours), raised design decisions proactively (framework choice, route conventions, edge cases), and asked the right clarifying questions before building. Made the engagement easy to manage from my side.
— Honest about scope and time. Took ownership of the parts that needed coordination on my side (DNS) without scope creep.
Would hire again without hesitation, and have him in mind for future Cloudflare/edge/AI-visibility work. Recommended.
What made him stand out:
— Before I even hired him, he had already deployed a working prototype on my actual site content. No other applicant did this. It removed the main risk of the engagement.
— Technically sharp. He correctly identified that the naive HTML→Markdown approach would hit Cloudflare Workers' CPU limits, and architected around it using HTMLRewriter streaming + a lightweight conversion pass. He explained the trade-offs clearly to a non-technical client.
— The final deliverable went past the brief: hand-tuned stripping for Webflow-specific quirks (button hover duplicates, slider image dedup, responsive variants), locale-aware routing across five language versions, robust 404 handling, a documented purge mechanism, proper test coverage, and clear inline documentation. Code was clean, modular, and well-commented.
— Communication was excellent throughout. Responsive (usually within hours), raised design decisions proactively (framework choice, route conventions, edge cases), and asked the right clarifying questions before building. Made the engagement easy to manage from my side.
— Honest about scope and time. Took ownership of the parts that needed coordination on my side (DNS) without scope creep.
Would hire again without hesitation, and have him in mind for future Cloudflare/edge/AI-visibility work. Recommended.
SF
Simon F.
Apr 11, 2026
Deploy & Polish a Static Portfolio Site (HTML/CSS/JS)
Biplob was responsive throughout the project and committed to finding solutions when challenges came up. He took initiative from the start — building a working demo before even being hired — and communicated clearly at every stage. Would recommend for front-end development work.
SA
Shariq A.
Sep 2, 2023
Need to develop a Single page web app and API for handwritten digit recognition
Nibir is one of the best developers that I've worked with.
Don't judge him based on his communication skill, he is a lot better and knows how to get things done, writes clean code and also provides recommendations.
Don't judge him based on his communication skill, he is a lot better and knows how to get things done, writes clean code and also provides recommendations.
RZ
Rania Z.
May 5, 2023
Developer needed to fix links previews for a buddyboss site for external/ internal content sharing.
About Biplob
Next.js, React | Vibe Coder | Replit, Lovable | AI App Fixed & Shipped
100%
Job Success
Bogra, Bangladesh - 8:55 am local time
That's the moment most founders feel stuck between two bad options: start over, or hire someone who doesn't understand what the AI built.
I'm the third option. I read AI-generated code, I understand what it was trying to do, and I fix it — fast and properly.
This is what I do:
— Email & verification issues: signup codes not arriving, SMTP broken, Resend or SendGrid misconfigured — I've fixed all of these.
— Broken auth: Supabase Auth, Firebase Auth, BetterAuth, email/password flows, OAuth, Row-Level Security — set up correctly the first time.
— Vibe-coded app rescue: audit the codebase, find what's insecure or broken, refactor for production.
— Full-stack SaaS and MVPs: Next.js, React, Supabase, Firebase — built from scratch with auth, payments, and deployment ready on day one.
— AI integrations: OpenAI, Claude, Google Gemini, Groq, Mistral, xAI Grok, DeepSeek — via REST API or Vercel AI SDK.
— Payments: Stripe, Polar, PayPal, Paddle, Creem — subscriptions, one-time payments, webhooks.
— Deployment: Vercel, Netlify, AWS, GitHub Pages — domain, SSL, CI/CD, mobile-checked.
— Static sites and landing pages: Astro, HTML/CSS/JS — deployed and connected to your domain in hours.
Tech I use every day:
Vibe tools: Replit, Lovable, Bolt, Base44, Manus AI, Claude Code, Cursor, v0
Frontend: Next.js, React, Astro, Tailwind CSS, Shadcn UI
Backend: Hono.js, Node.js, Express, FastAPI
Databases: Supabase, Firebase, PostgreSQL, MongoDB, PrismaORM, Drizzle
AI: OpenAI, Anthropic, Google Gemini, Groq, Mistral, xAI, DeepSeek, Vercel AI SDK
Email: Resend, SendGrid, Nodemailer
Payments: Stripe, Polar, PayPal, Paddle, Creem
Auth: Supabase Auth, Firebase Auth, BetterAuth
Languages: TypeScript, JavaScript, Python
Deploy: Vercel, Netlify, AWS, GitHub
Tell me what's broken or what you're building. I'll tell you exactly how to move forward.
Steps for completing your project
After purchasing the project, send requirements so Biplob can start the project.
Delivery time starts when Biplob receives requirements from you.
Biplob works on your project following the steps below.
Revisions may occur after the delivery date.
Review & audit the codebase
I read through your AI-generated code to understand the full structure, identify the root cause of the bug, and map out what needs to change.
Share my diagnosis with you
Before touching anything, I tell you exactly what I found and how I plan to fix it — no surprises, no scope creep.