I will build your ai saas or full stack ai web app with premium nextjs UI
Level 2
Gig Summary
About this gig
AI web apps that work like a real product and look like an Awwwards site.
I build full stack AI web applications in React, Next.js and TypeScript, with a polished, animated UI your users notice.
What I build:
- AI SaaS MVPs: auth, dashboard, Stripe billing
- AI chatbots and assistants inside your app (OpenAI, Claude, Gemini)
- Document Q&A / RAG apps with Supabase + pgvector
- AI tools: generators, summarizers, simple agents
- Finish and harden vibe coded apps from Lovable, Bolt, v0 or Cursor
Why clients trust me:
- 5+ years of front-end work, 70+ live production sites
- Figma to production, pixel-precise, with premium GSAP motion
- Streaming AI responses, loading states and error handling done right
- Secure: API keys server-side, rate limits, row-level security
- Fast, responsive, Lighthouse-checked, clean typed code you own
How I work: I use AI tools to speed up scaffolding and testing, then review every line myself, so you get a working, documented app sooner.
Message me with your idea before ordering and I'll reply with a scope, stack and timeline.
Get to know Hasan
Expert web developer specializing in animation Firebase Vuejs
Level 2
- FromBangladesh
- Member sinceApr 2022
- Avg. response time1 hour
- Last delivery2 months
Languages
English, Bengali
My Portfolio
FAQ
Who pays for the AI API usage?
You do, through your own OpenAI, Anthropic or Google API key, so you control the costs. I set up usage limits and give you a monthly cost estimate before we build.
Which AI model should I use?
It depends on your task, budget and speed needs. I usually recommend OpenAI, Claude or Gemini, and I build the app so you can switch models later without a rewrite.
Do I own the code?
Yes. You get the full source code in your own GitHub repo, with setup docs and environment variable instructions.
Can you work on my existing app or a Lovable, Bolt or v0 project?
Yes. I review it first, then fix bugs, improve the UI and mobile layout, move API keys server-side and deploy it properly.
What tech stack do you use?
React, Next.js and TypeScript on the front end, Next.js API routes or Node on the back end, Supabase or Postgres with pgvector for data and RAG, Stripe for payments and Vercel for hosting.
Is my data secure?
API keys stay server-side, the database uses row-level security, and data is only sent to an AI provider where your app needs it. I'm happy to sign an NDA.
Can you design the UI, or do I need Figma files?
Both work. I can build pixel-perfect from your Figma file, or design a clean, premium UI for you with smooth GSAP motion.
Are AI web apps a new service for you?
AI apps are my newest service, built on 5+ years of front-end work and 70+ live production sites. The AI integration is the easy part; a fast, polished, stable product is what I have always delivered.
What happens after delivery?
Every package includes fixes for bugs in what I delivered. Premium includes 30 days of support, and monthly maintenance is available through a custom offer.
How do we get started?
Message me with your idea, any reference apps and your deadline. I'll reply with a scope, recommended stack, package and timeline before you order.
24 reviews for this Gig
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| (1) | ||
| (1) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
I idaheidensleben

Denmark
It’s been a pleasure working with Hasan. He demonstrates a strong understanding of the task, and his delivery consistently meets our expectations and the original brief. Communication has been clear and effortless throughout the process.
$400-$600
Price
2 weeks
Duration
M Seller's Response
Helpful?S 
sociolus

Greece
Ongoing collaborationvery pleased with great results
$50-$100
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationgreat work as always
$100-$200
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationGreat work
$100-$200
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationgreat work, highly recommended
$200-$400
Price
4 days
Duration
Helpful?
24 reviews for this Gig
| (22) | ||
| (1) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
I idaheidensleben

Denmark
It’s been a pleasure working with Hasan. He demonstrates a strong understanding of the task, and his delivery consistently meets our expectations and the original brief. Communication has been clear and effortless throughout the process.
$400-$600
Price
2 weeks
Duration
M Seller's Response
Helpful?S 
sociolus

Greece
Ongoing collaborationvery pleased with great results
$50-$100
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationgreat work as always
$100-$200
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationGreat work
$100-$200
Price
1 day
Duration
Helpful?S 
sociolus

Greece
Ongoing collaborationgreat work, highly recommended
$200-$400
Price
4 days
Duration
Helpful?

