You will get From Vibe Code to Production-Ready App
Top Rated
Project details
You had a great idea, built it fast with AI tools, and now the code is a mess. It works sometimes, breaks randomly, and you know it's not ready for real users. Every day you delay shipping is a day your competitors aren't.
That's where I come in.
I take AI-generated and vibe-coded projects and turn them into clean, secure, production-ready applications. No judgment on how it was built, just a relentless focus on making it work properly.
✦ WHAT I FIX
→ Broken logic, runtime errors, and unstable builds
→ Messy code structure and poor component architecture
→ Security vulnerabilities and performance bottlenecks
→ Deployment blockers and anything stopping you from scaling
✦ PLATFORMS I CLEAN UP
→ Claude Code
→ Cursor
→ Lovable
→ AntiGravity
→ Bolt.new
→ Replit
→ Windsurf, and more
✦ TECH STACK I WORK WITH
→ React, Next.js, TypeScript, Tailwind
→ Supabase, Firebase, PostgreSQL
→ Vercel, Railway, and similar deployment platforms
✦ WHO THIS IS FOR
→ Founders who built an MVP and need it production-ready
→ Developers who want a second pair of expert eyes
→ Anyone who wants to ship confidently to real users
You built the vision. Let me make sure the code lives up to it.
That's where I come in.
I take AI-generated and vibe-coded projects and turn them into clean, secure, production-ready applications. No judgment on how it was built, just a relentless focus on making it work properly.
✦ WHAT I FIX
→ Broken logic, runtime errors, and unstable builds
→ Messy code structure and poor component architecture
→ Security vulnerabilities and performance bottlenecks
→ Deployment blockers and anything stopping you from scaling
✦ PLATFORMS I CLEAN UP
→ Claude Code
→ Cursor
→ Lovable
→ AntiGravity
→ Bolt.new
→ Replit
→ Windsurf, and more
✦ TECH STACK I WORK WITH
→ React, Next.js, TypeScript, Tailwind
→ Supabase, Firebase, PostgreSQL
→ Vercel, Railway, and similar deployment platforms
✦ WHO THIS IS FOR
→ Founders who built an MVP and need it production-ready
→ Developers who want a second pair of expert eyes
→ Anyone who wants to ship confidently to real users
You built the vision. Let me make sure the code lives up to it.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$850
|
Standard
$1,650
|
Advanced
$2,850
|
|---|---|---|---|
| Delivery Time | 10 days | 16 days | 22 days |
Number of Revisions | 2 | 4 | 6 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Frequently asked questions
139 reviews
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SL
Sam L.
Jun 17, 2026
Agentic AI Integration In Guidlo
This is my second time working with Saimul, and once again, he has done an excellent job. As always, he is fast, efficient, and very responsive. Communication was smooth throughout the project, and he delivered everything as expected. I highly recommend working with him and look forward to collaborating again in the future.
GW
Georgina W.
May 19, 2026
Diversity Network Maintenance
Thanks Saimul, great assistance in helping to maintain this site.
BS
Brian S.
May 13, 2026
Extension of Recriuitment Tool
Saimul is great. This is the second time I’ve worked with him, and I’ve truly enjoyed the experience.
Every developer on Upwork promises they can do the job, but very few actually deliver. You can really tell how good a developer is during the bug-testing phase, when things aren’t working as expected. A great developer like Saimul listens carefully, makes thoughtful suggestions, and fixes issues with quality in mind.
Every developer on Upwork promises they can do the job, but very few actually deliver. You can really tell how good a developer is during the bug-testing phase, when things aren’t working as expected. A great developer like Saimul listens carefully, makes thoughtful suggestions, and fixes issues with quality in mind.
AH
Alex H.
Apr 10, 2026
CC Booking Update & Maintenance
Saimul did an outstanding job upgrading our booking system. He delivered on time, executed everything with precision, and went above and beyond to ensure the system worked seamlessly. His professionalism and technical skill made the entire process smooth. I highly recommend him to anyone looking for a dependable and talented developer.
EK
Edward K.
Mar 11, 2026
Build a Simple Habit Tracker Web App – Lightweight Timer with Ad Integration
Sam was great to work with, very patient and accommodative. The work was clean and prompt. I'll be returning to Sam in the future for any website improvement and maintenance.
About Saimul
Full Stack Developer | AI-Powered SaaS, MVPs & Custom Websites
100%
Job Success
Chattogram, Bangladesh - 8:52 am local time
And honestly? Skill-wise, not much. Every Top Rated Plus developer on this platform is in the top 3% of Upwork. We've all shipped production-grade products, debugged at 2am, and argued about the right way to structure a database schema. That's just the baseline.
Where I'm different is how I show up.
I don't take a brief and disappear into a code editor. I ask questions. I challenge assumptions. I push back when something doesn't make business sense, and I'll tell you when a simpler solution beats the one you came in with. I've built and run my own SaaS products, and I come from a business background, so I see every project through two lenses at once: what you're building technically, and whether it's actually going to work as a business.
Most developers will build exactly what you ask for. I'll build what you actually need.
That means you get a co-builder, not a contractor, someone who's genuinely invested in the outcome, brings a bit of humor to the process, and won't let you spend six figures heading in the wrong direction.
If that's the kind of working relationship you've been looking for, keep reading.
My core stack: React / Next.js, Node.js, TypeScript, Supabase / PostgreSQL, MySql MongoDB, Mongoose, Prisma, Rest API, GraphQL
AI Integrations: OpenAI, Claude, Open Router, Grok, Gemini, Perplexity, Eleven Labs, Vapi, and AI Agents
Automation: n8n, make, and zapier.
🌟 Here's what founders I've built for are actually saying:
● "Since the new platform launch, our online sales have skyrocketed by 300%!"
● "Customer sign-ups and engagement magnified after the rebuild!"
● "Seamless app and e-commerce integration, our revenue grew by over $2M!"
● "Our redesigned product won the Web Excellence Award for best UI/UX!"
10+ years of full-stack development. $10M+ in client revenue powered by platforms I've shipped: SaaS products, web apps, e-commerce engines, real estate portals, and AI-powered platforms across B2B and B2C.
***
⚡ We're probably a great fit if you're thinking:
● "I have a huge market opportunity and need the best engineer to capture it"
● "My product vision has grown, but the codebase hasn't caught up"
● "I know the business side, I need a technical co-builder I can actually trust"
● "I'm not a developer and can't afford to waste months on the wrong hire"
● "My last dev burned me badly, I won't let that happen again"
● "I need a scalable, production-grade platform built to grow with me"
***
What you get when we work together:
★ Full ownership: Architecture, Frontend, Backend, APIs, Deployment, and Product Strategy, handled
★ A production-ready platform your users love and your investors respect
★ Technical debt and architectural mistakes caught before they become expensive
★ A turnkey, scalable codebase built to survive your next funding round
★ Clear communication, on-budget delivery, and no surprises mid-project
★ Core architecture you can reuse across future product lines, cutting long-term dev costs significantly
***
What my clients say:
✅ "Saimul does incredible work! Super passionate, consistently went above and beyond every single time."
✅ "Communication was always smooth, very proactive and easy to reach throughout the entire project."
✅ "Highly solution-oriented with deep skills across his field, a genuine problem solver."
✅ "Great listener who translates complex requirements into a product that actually works."
✅ "Excellent work, sharp attention to detail, and always willing to go the extra mile for the team."
***
I specialize in serious product builds, SaaS MVPs, B2B platforms, AI integrations, e-commerce systems, and complex full-stack applications. No template flips. No shortcuts.
I've shipped 150+ websites and web apps across a decade of development. As an engineer and technical architect, I have a 360° view of the full build lifecycle, from discovery and wireframing through production deployment and post-launch optimization.
My capacity is limited. I carry 80% repeat clients and 40% referrals, and I only take on projects I'm certain I can execute at the highest level.
What I look for in a new client:
● A clear product vision with room to collaborate
● Values clean architecture and long-term thinking over shortcuts
● Focused on real user outcomes, not just shipping pixels
● Knows the scale they're building toward
Not the right fit if:
✗ You need a $300 template site, that's not what I build
✗ You want to micromanage architecture decisions and sprint cycles
✗ Honest communication and mutual respect aren't priorities
***
Sound like a fit?
📋 Review my portfolio and live project examples on this profile
💬 Hit "Invite" or "Message" and send me a short note about your project, I respond within hours.
Steps for completing your project
After purchasing the project, send requirements so Saimul can start the project.
Delivery time starts when Saimul receives requirements from you.
Saimul works on your project following the steps below.
Revisions may occur after the delivery date.
Code Review & Audit
I analyze your entire codebase, identify bugs, security issues, and structural problems from AI-generated code.
Fix, Refactor & Optimize
I clean up the code, fix all identified issues, improve performance, and ensure the app is stable and scalable.