Headline

AI Product Engineer | Design + Dev + AI — one person, full stack | Open to build for founders & startups

About

Most founders need a designer, a developer, and an AI engineer. I'm all three. I'm Sayan — an AI Product Engineer and full-stack freelancer from Kolkata. I build websites, AI agents, automation workflows, and digital products for founders and startups who have a real problem to solve and need someone who can own the entire build from idea to launch. My stack covers the full range: AI agents and chatbots using Claude API, n8n, and WhatsApp automation; web development in React and Next.js; UI/UX and product design; and vibe coding — the ability to take a rough idea and turn it into a working product, fast. I've built an AI-powered WhatsApp chatbot that automates customer queries end-to-end, an Instagram research tool with AI-driven reel analysis. I'm a final-year ECE undergrad at NSEC Kolkata — building real things between classes, not just talking about them. If you have a product idea, an automation problem, or a website that needs to actually work — DM me. One person. Full stack. Let's build.

Location

Kolkata metropolitan area

Work experience

Junior Graphic Designer & Web Developer at Social Autowala, Mar 2026 - Present · 4 mos, Promoted from intern to junior role based on consistent delivery and client impact Lead graphic design and web development across multiple client accounts Build conversion-first landing pages and brand web assets Manage end-to-end creative production from brief to deployment

Graphic Design Intern at Social Autowala, Dec 2025 - Mar 2026 · 4 mos

AI Product Engineer & Freelancer at ShapeStudio, 2026 - Present · 6 mos, India, Building AI agents, web apps & automation for founders. Stack: Claude API, React, n8n, vibe coding tools.

Social Media Manager at Fox Makhana, Jan 2026 - Jun 2026 · 6 mos, Bihar, India

Education

Bachelor of Technology - BTech, Electrical, Electronics and Communications Engineering, Netaji Subhash Engineering College