Full stack · AI integration · Cloud deploymentKolkata, India · IST (UTC+5:30)Available for freelance

Suman Acharyya

I design, build and ship fast, scalable web and mobile products — and build AI into them, from chatbots to agents.

Start a project →
ReactNext.jsReact NativeNode.jsNestJSGraphQLTypeScriptAI Agents
KubernetesAWSDigitalOceanVercelNginxChatbotsRAG & vector searchMongoDBPostgreSQLRedisExpress.jsWebSocketsREST APIsTailwind CSSDockerGitPython
(01) About
Portrait of Suman Acharyya
Suman · Kolkata, IN

I'm a full stack developer with nearly five years of shipping production code — real-time APIs in NestJS and GraphQL, data models in MongoDB and PostgreSQL, and responsive interfaces in React, Next.js and React Native — plus AI integration: chatbots, agents, RAG search and AI workflows — shipped to production cloud and monitored once live. Now taking on freelance projects.

Currently
Web Developer at Symlink Technologies, since May 2023
Education
MCA, Brainware University — 92.28%
Languages
English, Bengali, Hindi
Works
Remotely, with clients anywhere
(02) AI Integration

Apps that understand,
search and act

As an AI integration developer on the MERN stack, I bridge the gap between your data, AI models and the app your users actually touch.

01

Conversational systems

Context-aware chatbots

Bots that understand intent and remember the conversation, for support and internal workflows.

AI agents

Agents that act on a plain-language request — query data, draft an email, update a ticket.

02

Search & retrieval (RAG)

Vector search

RAG with MongoDB Atlas Vector Search — ask your documents questions in plain language.

Semantic recommendations

Product and content suggestions matched on meaning, not just tags.

03

Data processing APIs

Automated content workflows

Summarise PDFs, extract names, dates and prices, translate text — automatically.

Multi-modal processing

Images and voice notes turned into clean, structured data for your app.

04

AI governance & security

Guardrails & redaction

Prompt-injection checks and personal-data redaction before anything reaches an AI provider.

Rate limits & cost control

Per-user usage limits that keep AI bills predictable and responses fast.

Where I fit

The layer between your product and the model.

Full stack developer

UI/UX, CRUD operations, database queries and business logic.

AI integration developer · me

Connects web apps to AI models, designs smart backend flows and handles data embeddings — on a full stack foundation.

Data scientist / ML engineer

Trains models, tunes algorithms and manages large raw datasets.

AI assistantExample flow

Create a banner image for our summer sale, and write a short caption.

[Generated image]

Here's your banner and a caption you can use right away.

(03) Selected work

Products I've built
& am building

Web · Mobile · API — 05 projects

01 / 05 — Client productIn development

Noam

Building front-end features and API integrations for Noam's web platform, as part of the team at Symlink Technologies.

Front-endAPI integrationWeb platformnoam.one ↗
Preview coming soon
02 / 05 — Client productIn development

Faith Life
Social

A Christian social media platform for sharing Bible verses, prayers, testimonies and videos. I contribute to posts, profiles and community features.

Social platformPosts & profilesCommunityfaithlifesocial.com ↗
Preview coming soon
03 / 05 — Client productCompleted

Zuso

A cross-platform app for phone and tablet, backed by a NestJS + GraphQL API with real-time updates over WebSockets.

React NativeNestJSGraphQLWebSockets
Tablet
Phone
04 / 05 — Web appIn development

Flight
Tracker

Search for flights and follow them with real-time status, built in React.js.

React.jsReal-time statusSearch
Preview coming soon
05 / 05 — Web app · MERNCompleted

BI Blog
& Admin

A business-intelligence blog platform with an admin interface to manage posts and users.

MongoDBExpress.jsReact.jsNode.js
Preview coming soon
(04) Services

How I can help
your product

Message me before ordering — we'll scope the work together so you know exactly what you're getting.

Full stack web apps

From idea to working product with React, Next.js and Node.js.

  • + Responsive UIs in Tailwind CSS
  • + REST & GraphQL integration
  • + Admin dashboards
  • + MongoDB / PostgreSQL design
Discuss a web app →

Cross-platform mobile apps

One React Native codebase for iOS, Android, phones and tablets.

  • + Phone & tablet layouts
  • + API & real-time integration
  • + Reusable UI components
  • + Testing before handover
Discuss a mobile app →

Backends & APIs

NestJS or Express services that are typed, fast and maintainable.

  • + REST & GraphQL APIs
  • + Real-time with WebSockets
  • + Redis caching
  • + Docker-ready services
Discuss a backend →

AI integration

Chatbots, agents, RAG search and AI workflows built into your product.

  • + Chatbots & AI agents
  • + RAG & semantic search
  • + Content & multi-modal APIs
  • + Guardrails & cost control
Discuss AI for your product →
  1. Step 01

    Discuss

    We talk through your goals, scope and timeline.

  2. Step 02

    Plan

    Clear milestones and the stack that fits the job.

  3. Step 03

    Build

    Clean TypeScript, with regular progress updates.

  4. Step 04

    Deliver

    Tested and handed over, ready to launch.

(05) Deploy, scale & monitor

Live, fast
and kept healthy

I don't hand over code and walk away. I ship your app to production, set it up to scale, and wire in monitoring so problems are caught before your users report them.

MERN on KubernetesReference architecture
Internet / users
IngressSSL · routes traffic
/ServiceFrontend
NginxNginxNginx
React pods
/apiServiceBackend
NodeNodeNode
API pods · HPA
MongoDB AtlasManaged, outside the cluster

Ship

Your app packaged with Docker so it runs the same everywhere, with secrets kept out of the code.

Docker · Nginx · Node-alpine

Scale

Runs on managed cloud or Kubernetes that adds capacity during traffic spikes and recovers on its own if a server fails.

Kubernetes · AWS · DigitalOcean · Vercel · MongoDB Atlas

Monitor

Instant alerts pointing to the exact line that broke, live performance dashboards and automatic restarts if the API crashes.

Sentry · Prometheus · Grafana · OpenTelemetry · PM2

A setup that fits your budget

I'll recommend one on our first call
Lean

Low maintenance

Managed platforms with error tracking and cloud dashboards. Least to look after — ideal for MVPs and small business apps.

Vercel · Render · Railway · AWS Lambda
Control

Lowest hosting bill

Your own VPS with process management, error tracking and self-hosted dashboards. Full control at a small monthly cost.

DigitalOcean · Hetzner · AWS EC2 · Linode
Scale

Built for growth

Containers on managed Kubernetes with a dedicated database — high availability and auto-scaling for serious traffic.

AWS EKS · DigitalOcean DOKS · Google GKE

Already have an app? I can containerise it, move it to reliable hosting and add monitoring.

Plan my deployment →
(06) Quality & bug fixing

Tested before launch,
fixed for good

Your users shouldn't be the ones finding bugs. Every project gets automated tests before release, and a clear process if something breaks in production.

  1. 01

    Test

    Unit tests for business logic and API tests for every key route — before anything ships.

    Jest · Supertest · Bruno / Postman
  2. 02

    Catch

    Production errors alert me instantly, with the exact line that failed — usually before anyone reports it.

    Sentry · Email / Slack alerts
  3. 03

    Diagnose

    Stack traces and replayed requests reproduce the issue locally, using anonymised data — no guesswork.

    Sentry · PM2 logs · Bruno
  4. 04

    Fix & prevent

    Every fix ships with a regression test, and the full suite runs before deploy — so the same bug can't return.

    Jest · Supertest
(07) Experience

Where I've worked

  1. May 2023 — Present

    Web Developer

    Symlink Technologies LLP, Kolkata

    Full stack web and mobile apps with React, Next.js, React Native, NestJS and Express. Schemas in MongoDB and PostgreSQL, Redis caching. Client products include Noam, Faith Life Social and Zuso.

  2. Mar — Jun 2023

    Application Developer (Intern)

    Helpy Moto

    App features in React Native and JavaScript — UI, API integration and testing.

  3. Nov 2022 — Apr 2023

    Web Developer Trainer

    M/S BRITECH

    Taught HTML, CSS, JavaScript, React and Node.js through hands-on projects and code reviews.

  4. Feb — Sep 2022

    Software Development Engineer I

    Logic Square Technologies

    MERN features in an Agile team, with Git-based workflows, code reviews and API integration.

(08) Stack

Frontend

  • React.js
  • Next.js
  • React Native
  • Tailwind CSS

Backend

  • Node.js
  • NestJS
  • Express.js
  • GraphQL
  • REST
  • WebSockets

Data

  • MongoDB
  • PostgreSQL
  • Redis

Languages

  • TypeScript
  • JavaScript
  • Python
  • HTML5
  • CSS3

Tools

  • Git
  • GitHub
  • GitLab
  • Jest
  • Supertest
  • Postman
  • Bruno

Cloud & DevOps

  • Docker
  • Kubernetes
  • AWS
  • DigitalOcean
  • Vercel
  • Render
  • MongoDB Atlas
  • Nginx
  • Sentry
  • Prometheus
  • Grafana
  • OpenTelemetry
  • PM2
(09) Education & certificates
2019 — 2022

Master of Computer Applications

Brainware University, Kolkata92.28%
2016 — 2019

Bachelor of Computer Applications

Brainware University, Kolkata79.73%
  • Pro Back-end DeveloperCert
  • Full Stack MERN Boot-campCert
  • Python for Data ScienceIBM · Cognitive Class
(10) Contact

Got an idea?Let's build it.

Tell me what you're building — a new product, a feature for an existing app, AI integration, or just a consultation. I'll reply with next steps.

Emailletsconnect@sumanacharyya.dev
Hire me on
Fiverr ↗
Elsewhere
LinkedIn ↗GitHub ↗GitLab ↗
Kolkata · IST (UTC+5:30)

Project & consultation request

Takes ~2 min
I'm looking for
Replies come from letsconnect@sumanacharyya.dev