Full Stack Developer

About Vertex Infinity

Vertex Infinity is a growing tech startup that builds web and mobile applications for clients ranging from startups to large enterprises. We work with AI and large language models to build scalable products from scratch. We’re a small, close-knit team where everyone learns fast, takes ownership and grows with the company.

About the Role We’re looking for a skilled Full Stack Developer to build and maintain complete web applications, from user interface to server and database. You’ll work closely with our designers and founders on real client projects, including AI-powered products.

What You’ll Do

• Develop full-stack web applications using React.js / Next.js and Node.js Build and maintain REST APIs and back-end services Design and manage databases (MongoDB, PostgreSQL or MySQL) Convert Figma designs into responsive, pixel-perfect interfaces Integrate third-party services and AI APIs (OpenAI, Claude, etc.) Write clean, scalable and maintainable code Debug, test and optimize applications for performance Collaborate with the team on planning and delivering new features Full details of the role will be discussed during the interview. What We’re Looking For 1–3 years of experience in full-stack development Strong knowledge of JavaScript (ES6+); TypeScript is a plus Hands-on experience with React.js / Next.js on the front end Hands-on experience with Node.js / Express.js on the back end Experience with MongoDB, PostgreSQL or MySQL Experience with REST APIs, Git and version control Familiarity with cloud deployment (AWS, Vercel or similar) is a plus Experience with AI/LLM integrations is a strong plus A portfolio or GitHub profile showing your work