Web and full-stack product engineering
Web app developer in Kolkata for dependable digital products
I’m Apratim Dutta, a React and full-stack developer based in Kolkata. I build responsive web applications, API-backed workflows, internal tools, and AI-assisted product experiences with an emphasis on speed, clarity, and maintainable delivery.
Capabilities
Product engineering beyond the interface
React product interfaces
Responsive, accessible React applications with thoughtful component architecture, predictable state, and performance that holds up under real data.
Full-stack workflows
Frontend features connected to Node.js, Django REST Framework, FastAPI, PostgreSQL, Supabase, Firebase, and external service APIs.
Automation and integrations
Payments, Excel imports, WhatsApp workflows, real-time updates, AI pipelines, and operational tooling designed around how teams actually work.
Production proof
Experience grounded in shipped work
- Improved data-heavy React module load times by 35% with better synchronization patterns.
- Designed scalable REST APIs for procurement and design-management workflows.
- Built validated Excel import and export systems for operational and financial data.
- Created AI-assisted extraction and normalization pipelines with Python and FastAPI.
How I work
A practical route from idea to release
- 01
Understand the workflow
Map the people, data, decisions, and edge cases involved before choosing the application structure.
- 02
Deliver end to end
Build vertical product slices across interface, API, data, and integrations so progress remains testable and useful.
- 03
Measure and improve
Use production feedback and performance evidence to improve the workflows that matter most to users.
Selected work
Case studies with implementation detail
Full-stack product engineering
SiteMaster - Construction & Interior Project Management Platform
Built end-to-end workflows across frontend and backend for field teams handling updates, approvals, procurement, and operational data at scale.
Read the case studyAI-powered cooking companion
Heshel AI
Turned saved food inspiration into actionable meal decisions with ingredient detection, recipe parsing, and swipe-based recommendations.
Read the case studyData and machine learning case study
Predictive Crime Analysis
Analyzed 500k+ records to surface crime patterns and forecast high-risk periods for smarter operational planning.
Read the case studyCommon questions
Working together
What web technologies do you use?
My core web stack includes React, JavaScript, Node.js, Django REST Framework, FastAPI, PostgreSQL, Supabase, and Firebase, selected according to the product’s needs.
Can you work across frontend and backend?
Yes. I regularly deliver frontend workflows, backend APIs, data integrations, third-party services, and production debugging as one connected product effort.
Are you available for remote product work?
Yes. I am based in Kolkata and can work with startups and product teams remotely.
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