I will develop custom full stack web and mobile app in nextjs flutter


About this gig
Are you looking for a production-grade Web Application, Mobile App, or AI-powered SaaS platform? I develop scalable, secure, and modern full-stack applications tailored to your business needs.
With 6+ years of software engineering experience (B.Sc. Software Engineering) and 24+ delivered production projects, I build robust systems from UI design to cloud deployment.
My Core Tech Stack:
Frontend: Next.js 15, React 19, TypeScript, Tailwind CSS
Mobile: Flutter & Dart (Cross-Platform iOS & Android)
Backend: Node.js, Express, Python (FastAPI / Django), REST & GraphQL
Database & Cloud: PostgreSQL, MongoDB, Supabase, Firebase, AWS, Vercel
Integrations: Stripe, PayPal, OpenAI ChatGPT, Gemini AI, Webhooks
What You Will Receive:
Pixel-perfect, ultra-responsive modern UI/UX
Clean, modular, and maintainable codebase
Secure authentication and database architecture
Full source code with detailed documentation and deployment support
Please message me before placing an order so we can discuss your project requirements and architecture!
Get to know Janitha Dilshan
Senior Full Stack, Flutter and Ai SaaS Software Engineer
- FromSri Lanka
- Member sinceNov 2020
- Avg. response time2 hours
- Last delivery2 years
Languages
English
My Portfolio
Other Software Development Services I Offer
FAQ
What tech stack do you recommend for my project?
For web applications and SaaS, Next.js 15 with React and TypeScript is the gold standard. For cross-platform mobile apps (iOS & Android), Flutter is ideal for high performance and unified code.
Will I own 100% of the source code?
Yes, absolutely. You receive complete ownership of all source code, assets, and database architecture upon delivery.
Do you provide assistance with server deployment and domain setup?
Yes! I can deploy your web app to Vercel, AWS, or VPS, and configure custom domains, SSL certificates, and database connections.
Can you build an AI-powered SaaS application?
Yes, I specialize in integrating OpenAI, Google Gemini, and custom LLM workflows into full-stack web and mobile apps.
Do you offer post-launch support and maintenance?
Yes, I provide dedicated support after delivery to ensure your application runs smoothly in production.

