Available for Freelance Projects
I'm Ajay, a Full-Stack Developer specializing in scalable web applications, backend engineering, API integrations, and AI-powered solutions. I help businesses transform ideas into functional digital products.
Ajay Kumar Battu · Hyderabad, India
Real products that are live today.
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AI-powered quiz app
A mobile quiz app where students and professionals practice with swipeable True/False questions. Quiz content is generated with the OpenAI API.
Interactive SQL practice, part of DBA Genesis
Learners practice SQL right in the browser. It is part of the DBA Genesis website, which I work on regularly at my company, launching updates like the Database Playground.
Pharma company website
The company website for Foy Biomed, a pharma company. Deployed and live, and part of my current work at the company.
Responsive front ends, plus the backend APIs and databases behind them.
Cross-platform mobile apps, with AI features where they genuinely help.
Taking products from code to real users: deployed web apps and apps on the App Store.
I'm a Software Engineer in Hyderabad who started in web development through a six-month internship and has been building practical products ever since. I work across the stack: React front ends, Node.js back ends, and the databases behind them.
My day-to-day includes building web applications, integrating third-party APIs, writing backend functionality, and adding AI-powered features with the OpenAI API. I use AI-assisted tools like Cursor to move faster, and I still review and test what ships.
I enjoy solving technical problems and turning rough ideas into products people can use. When we work together you get clear communication, honest estimates, and working software.
What I can build or fix for you.
A fast, professional website that explains what you do and brings in enquiries.
Focused pages that look right on every screen and are built to convert visitors.
End-to-end apps with a React front end, a solid API and a database.
Clean, documented REST APIs with authentication and sensible structure.
Schemas and queries in MySQL, PostgreSQL, MongoDB or Supabase that fit your data.
Add OpenAI-powered features like generation, summaries or chat to your existing product.
New products where AI is a core feature, designed around real use cases.
Cross-platform mobile apps with React Native and Expo.
Connect payments, data providers and other services reliably.
Fixes, updates and small improvements so your site keeps working.
Tell me what you want to build. Reach out on any of these.