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I will build ai powered saas app with react nodejs and gpt API
Stevan Leonardy
About this gig
Are you building a SaaS product and need a developer who can ship it fast with AI baked in?
I specialize in full-stack SaaS apps that combine React frontends, Node.js APIs, and real AI features (ChatGPT, Claude, or your own model) into one production-ready product.
What you get:
React or Next.js frontend (clean, responsive, fast)
Node.js/Express or NestJS backend with RESTful API
PostgreSQL or MongoDB database with Prisma ORM
OpenAI / Claude API integration (chat, generation, embeddings)
Authentication (JWT, OAuth, or magic links)
Deployment on Vercel, Railway, or AWS
Full source code + documentation
I don't use templates. Every project is built from scratch for your exact use case.
Message me before ordering to discuss your idea I reply within 2 hours.
Get to know Stevan Leonardy
Stevan Leonardy
Fullstack Developer N' Translator
- FromIndonesia
- Member sinceApr 2017
- Avg. response time1 hour
- Last delivery5 years
Languages
English, Indonesian, Chinese
With a Bachelor's degree in Information Technology from Universitas Mikroskil and a strong foundation in software architecture, I specialize in creating impactful, user-driven technologies. In my recent role as a Senior Software Engineer and Data Engineer at Y Ventures Group, I contributed to the development of cutting-edge solutions leveraging Docker, Kubernetes, and Amazon Web Services (AWS). My work consistently emphasizes building scalable, efficient systems that align with strategic goals, while fostering collaboration to drive exceptional project outcomes.
My Portfolio
FAQ
Q1: I have an idea but no technical spec — can you still help?
Yes. Just tell me what you want the app to do. I'll ask the right questions, map the scope, and give you a clear plan before anything starts. No tech knowledge needed.
Q2: Will I own the code after delivery?
100% yes. You get full source code via GitHub or zip. No licensing, no lock-in, no reuse. Everything is yours the moment payment is released.
Q3: What if the result isn't what I expected?
We agree on scope in writing before I start. Revisions are included in every package. If something doesn't match what was agreed, I fix it — no extra charge.
Q4: Will the AI features be expensive to run?
You use your own API key, paid directly to OpenAI or Anthropic. Most early apps cost under $20/month. I'll also show you how to set spending limits so costs stay controlled.
Q5: How do I know you won't disappear mid-project?
I work in milestones with check-ins at each stage so you see real progress. My response time is under 2 hours. Check my reviews — communication is always mentioned first.
