ayan
chakraborty

I'm Ayan Chakraborty, a full stack developer from Kolkata. I build web apps, websites and SaaS products for real businesses, from the backend and database to the screens people use every day.

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SaaS Products
System Architecture
Tech Lead

Full Stack Software

Ayan Chakraborty, Full Stack Software Engineer

©2026 | AYAN CHAKRABORTY

Work

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A few products I've built and led at work, plus two projects from college. Scroll to see them.


HEY

Myself

ayan

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( brief introduction )

I build software that real businesses use every day.

Ayan Chakraborty, Software Engineer

I'm Ayan Chakraborty, a software engineer from Kolkata with a degree in Computer Science. I started building for the web in college and now do it full time. I work across the whole stack: I design in Figma, build the frontend, write the backend and plan how it all fits together. I care about clean code, simple design and software that actually helps people.

Experience

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Cognivaa logo

Cognivaa

( Software Engineer )

Aug 2025 - Present

  • 1+

    Years in the industry

  • 2

    Products led

  • 162+

    Companies on Sitely


01

Sitely

( Product & tech lead )

Mar 2026 - Present

I lead the development of Sitely, a construction management tool that companies use to run their projects, purchases, stock and finances.

  • Planned the product and how it works from day one, and took it to launch on 24 July 2026.
  • Designed every screen in Figma, then built both the frontend and the backend.
  • Wrote the core business logic, database models and APIs that connect all the modules.
  • Set up login, user roles and permissions with Keycloak.
  • Lead the development team and make the main technical decisions.
  • 162+ companies have signed up so far, including vendors who work directly with the government.

Stack: Next.js · JavaScript · Tailwind CSS · Node.js · Express · MongoDB · Keycloak · Figma


02

PlayPause

( Frontend lead )

Oct 2025 - May 2026

I led the frontend of PlayPause, a live video review tool that creative teams use to share videos, give feedback and approve final cuts.

  • Built the whole frontend with Next.js and Tailwind CSS.
  • Made the review screens: comments on exact frames, comparing versions and approvals.
  • Built large video uploads and smooth streaming using Cloudflare CDN.
  • Kept the app fast by finding and fixing performance problems.
  • Worked with the backend team to plan the business logic and how the services fit together.

Stack: Next.js · JavaScript · Tailwind CSS

Platform: Java microservices · PostgreSQL · Cloudflare · AWS · Nginx


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Client Work

( Design & development )

Alongside

Websites for Pioneer Regis and Pioneer Geoscience, a catering booking site with an admin panel, and websites for business clients.

Stack: React · Tailwind CSS · MERN

Skills

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01

( frontend )

Modern, responsive web apps with clean UI and smooth animations. From components and state to performance and accessibility.

  • HTML & CSS
  • JavaScript
  • React
  • Next.js
  • Tailwind CSS
  • GSAP
  • Responsive UI
  • Performance

02

( backend & APIs )

Server-side apps and APIs built from the ground up. Routing, business logic, security, integrations and everything that runs behind the scenes.

  • Node.js
  • Express
  • REST APIs
  • Business Logic
  • Authentication
  • Integrations

03

( data & systems )

Databases and system design that stay fast and reliable as a product grows. From data modeling and queries to how services connect.

  • MongoDB
  • SQL
  • Data Modeling
  • System Architecture
  • Scalability

04

( product & design )

Taking an idea from a rough sketch to a finished product. UI/UX design, feature planning, teamwork and shipping on time.

  • SaaS
  • UI/UX
  • Figma
  • Enterprise Workflows
  • Product Planning
  • Tech Leadership