Log entry 001 · Mumbai, IN · currently at Enso WebWorks

Senior Full Stack Engineer

SANJAY
JANA

Six years, five ports, one heading. I build the systems that carry weight — multi-model AI platforms on LangChain and RAG, fintech dashboards that stay fast when the data gets ugly, design systems other engineers actually reach for. I’m going to build the thing that outlives the sprint. That’s not a wish, it’s the route.

See the bounties →Resume ↓

Years at sea

Ports of call

50%

Load time cut at MintOak

3.8

GPA · IIIT-Bangalore

Scroll to set sail

01 WHO’S SAILING

I don’t ship demos.
I ship things that stay up.

Senior Full Stack Engineer in Mumbai. My work spans B2B SaaS, fintech, AI-powered products and enterprise banking — the through-line is code quality and measurable impact, not the framework of the month.

Right now I’m at Enso WebWorks architecting multi-model AI platforms and shared internal services other teams plug straight into. PG in Software Development from IIIT Bangalore, GPA 3.8/4.0. Next heading: bigger systems, sharper constraints, a crew worth the trip.

Full stack architecture

End-to-end ownership from React/Next.js UIs down to Node.js services — shipped with performance and DX in mind.

AI & LLM integration

LangChain, RAG pipelines, Ollama, Hugging Face — bridging models and product value, not chatbot theatre.

Scale under pressure

Fintech, e-commerce and enterprise loads — reliability first, then the number that proves it.

02 THE ROUTE SO FAR

FIVE PORTS,
ONE HEADING

Current port

Sep 2025 – Present

Senior Software Engineer

Enso WebWorks · Mumbai

Architected centralized internal admin portal with granular RBAC for all Enso products, empowering sales, support, and ops teams.
Built production-grade AI chat app with real-time web search (Brave Search API) and intent-based query routing for domain-specific responses.
Implemented intent classification via Hugging Face Transformer models for accurate detection of stocks, search, and tool query types.
Designed scalable multi-model AI chat platform with LangChain, RAG pipelines, Ollama integration, and configurable agent workflows.
Architected AI platform as a shared internal service enabling other teams to integrate custom agents with minimal configuration.

Next.jsTypeScriptLangChainRAGOllamaHugging FaceRBACNode.js

Oct 2024 – Sep 2025

Senior Software Engineer

MintOak · Mumbai

Developed and maintained high-performance fintech platform using Next.js, TypeScript, and React.js for financial data consumers.
Engineered reusable UI component libraries with design system patterns, improving developer velocity and rendering performance.
Optimized frontend with SSR and SSG, reducing average page load times by 50% and boosting SEO rankings.
Integrated third-party APIs and built real-time data visualization dashboards surfacing actionable financial insights.
Collaborated with designers, backend engineers, and product stakeholders for pixel-perfect, responsive UI.

Next.jsReact.jsTypeScriptSSRSSGData VizDesign Systems

Sep 2022 – Oct 2024

Software Engineer – Full Stack

SaaSMonk · Mumbai

Led development of B2B SaaS product for client marketing strategies and revenue growth through data-driven tooling.
Built robust backend services via Next.js API routes ensuring reliable data flow and efficient API performance.
Translated business requirements into scalable, production-ready features aligned with product and stakeholder goals.

Next.jsNode.jsMongoDBREST APIsTypeScript

Jan 2022 – Aug 2022

React Developer

ValarTech · Mumbai

Developed performant React.js applications for multiple clients with immersive UX and seamless API integrations.
Crafted visually appealing, fully responsive interfaces using Tailwind CSS ensuring cross-device compatibility.
Collaborated with cross-functional teams to gather requirements and deliver features on schedule.

React.jsNext.jsTailwind CSSREST APIs

Oct 2019 – Nov 2021

First port

System Engineer

TCS · Mumbai

Built and maintained web app for RTGS and NEFT transaction management from SFMS integrated into a banking platform.
Developed React components with deep understanding of UI/UX principles and financial domain business logic.

React.jsSFMSBanking APIsJava

03 THE BOUNTY BOARD · SEVEN CATCHES

WHAT I’VE
CLAIMED

Production work and personal builds. Every catch below is something real that someone depends on.

AI / ML · Work

Multi-Model AI Chat Platform

Scalable AI platform enabling users to interact with multiple LLMs via LangChain, with RAG pipelines, Ollama integration, and configurable agent workflows — architected as a shared internal service.

LangChainRAGOllamaNext.jsTypeScriptNode.js

Multi-LLM routing via LangChain
Retrieval-Augmented Generation (RAG)
Shared service with minimal onboarding
Configurable agent workflows

AI / ML · Work

AI Chat with Real-Time Web Search

Production-grade AI chat app with Brave Search API integration, intent classification via Hugging Face Transformers, and dynamic domain-specific response cards for stocks, finance, and utilities.

Next.jsHugging FaceBrave Search APITypeScriptNode.js

Intent-based query routing
Real-time web search integration
Stock market & financial data cards
Transformer-based intent classification

Enterprise · Work

Internal Admin Portal (RBAC)

Centralized admin portal for all Enso products with granular role-based access control, giving sales, support, and operations teams efficient management of leads, users, and customer issues.

Next.jsRBACTypeScriptNode.jsPostgreSQL

Granular role-based access control
Multi-product centralized portal
Team-specific dashboards

FinTech · Work

MintOak Fintech Platform

High-performance fintech platform with SSR/SSG optimization, reusable UI component libraries, and real-time data visualization dashboards — achieving 50% reduction in page load time.

Next.jsTypeScriptReact.jsSSRSSGDesign System

50% reduction in page load time
Real-time financial data visualization
Reusable design system components

Healthcare · Personalahmu.co.uk ↗

AHMU – Online Pharmacy

GPhC-regulated UK online pharmacy with NHS-compliant online consultations, prescription services, same-day delivery, and a linked online doctor clinic — built end-to-end with Next.js.

Next.jsTypeScriptNode.jsMongoDBCloudFront

GPhC-regulated & NHS-compliant platform
Online doctor + pharmacist consultation flows
Same-day & express delivery system
Secure user auth & discreet checkout

Healthcare · Personalfyldeclinic.co.uk ↗

Fylde Clinic – Online Pharmacy

GPhC-regulated online pharmacy for 30+ conditions including weight loss (Mounjaro, Wegovy), sexual health, and hair loss — featuring a BMI calculator, Trustpilot integration, and a pharmacist-authored Health Hub.

Next.jsTypeScriptNode.jsTailwind CSS

GPhC registration No. 9012835 — fully regulated
BMI calculator for weight-loss eligibility
Health Hub with pharmacist-reviewed articles
Trustpilot & multi-payment gateway integration

E-Commerce · Personal

One Store – E-Commerce Platform

Scalable full-stack e-commerce platform delivered via a Turbo Repo monorepo architecture, with seamless shopping experiences backed by Next.js, Nest.js, and MongoDB.

Next.jsNest.jsMongoDBTailwind CSSTurbo Repo

Turbo Repo monorepo architecture
Full-stack Next.js + Nest.js
Scalable product & order management

NEXT.JSLANGCHAINTYPESCRIPTRAGNODE.JSPOSTGRESMONGODBOLLAMANEXT.JSLANGCHAINTYPESCRIPTRAGNODE.JSPOSTGRESMONGODBOLLAMA

04 THE KIT I CARRY

Languages

JavaScript (ES2022+)TypeScriptCore Java

Frontend

React.jsNext.jsTailwind CSSBootstrapTurbo Repo

Backend

Node.jsExpress.jsNest.jsHonoBunJava Spring Boot

AI / ML

LangChainRAG PipelinesOllamaHugging FaceLLM IntegrationBrave Search API

Databases

MongoDBPostgreSQLRedis

API Design

RESTtRPCGraphQL

Testing

JestVitestReact Testing Library

DevOps & Tools

DockerGitGitHubVS CodeJiraLinear

Loading live from the GitHub API…

Education

PG in Software Development

IIIT Bangalore · GPA 3.8 / 4.0

Download the full resume↓

05 TERMS OF ENGAGEMENT

WANTED

HIRED OR CONSULTED

SANJAY JANA

SENIOR FULL STACK ENGINEER · MUMBAI, IN

TERMSFull-time senior / staff roles

BASERemote, or Mumbai hybrid

SPECAI platforms · fintech · SaaS

sjana7797@gmail.com

AVAILABLE

SET A
COURSE

Tell me what you’re building and where it hurts. I answer everything within a day.

EMAIL ↗GITHUB ↗LINKEDIN ↗RESUME ↓

Charting the route…

I don’t ship demos.
I ship things that stay up.

FIVE PORTS,
ONE HEADING

Current port

Sep 2025 – Present

Senior Software Engineer

Enso WebWorks · Mumbai

Architected centralized internal admin portal with granular RBAC for all Enso products, empowering sales, support, and ops teams.
Built production-grade AI chat app with real-time web search (Brave Search API) and intent-based query routing for domain-specific responses.
Implemented intent classification via Hugging Face Transformer models for accurate detection of stocks, search, and tool query types.
Designed scalable multi-model AI chat platform with LangChain, RAG pipelines, Ollama integration, and configurable agent workflows.
Architected AI platform as a shared internal service enabling other teams to integrate custom agents with minimal configuration.

Next.jsTypeScriptLangChainRAGOllamaHugging FaceRBACNode.js

Oct 2024 – Sep 2025

Senior Software Engineer

MintOak · Mumbai

Developed and maintained high-performance fintech platform using Next.js, TypeScript, and React.js for financial data consumers.
Engineered reusable UI component libraries with design system patterns, improving developer velocity and rendering performance.
Optimized frontend with SSR and SSG, reducing average page load times by 50% and boosting SEO rankings.
Integrated third-party APIs and built real-time data visualization dashboards surfacing actionable financial insights.
Collaborated with designers, backend engineers, and product stakeholders for pixel-perfect, responsive UI.

Next.jsReact.jsTypeScriptSSRSSGData VizDesign Systems

Sep 2022 – Oct 2024

Software Engineer – Full Stack

SaaSMonk · Mumbai

Led development of B2B SaaS product for client marketing strategies and revenue growth through data-driven tooling.
Built robust backend services via Next.js API routes ensuring reliable data flow and efficient API performance.
Translated business requirements into scalable, production-ready features aligned with product and stakeholder goals.

Next.jsNode.jsMongoDBREST APIsTypeScript

Jan 2022 – Aug 2022

React Developer

ValarTech · Mumbai

Developed performant React.js applications for multiple clients with immersive UX and seamless API integrations.
Crafted visually appealing, fully responsive interfaces using Tailwind CSS ensuring cross-device compatibility.
Collaborated with cross-functional teams to gather requirements and deliver features on schedule.

React.jsNext.jsTailwind CSSREST APIs

Oct 2019 – Nov 2021

First port

System Engineer

TCS · Mumbai

Built and maintained web app for RTGS and NEFT transaction management from SFMS integrated into a banking platform.
Developed React components with deep understanding of UI/UX principles and financial domain business logic.

React.jsSFMSBanking APIsJava

I don’t ship demos.I ship things that stay up.

FIVE PORTS,ONE HEADING

Senior Software Engineer

Senior Software Engineer

Software Engineer – Full Stack

React Developer

System Engineer

WHAT I’VECLAIMED

Multi-Model AI Chat Platform

AI Chat with Real-Time Web Search

Internal Admin Portal (RBAC)

MintOak Fintech Platform

AHMU – Online Pharmacy

Fylde Clinic – Online Pharmacy

One Store – E-Commerce Platform

SET ACOURSE

I don’t ship demos.I ship things that stay up.

FIVE PORTS,ONE HEADING

Senior Software Engineer

Senior Software Engineer

Software Engineer – Full Stack

React Developer

System Engineer

WHAT I’VECLAIMED

Multi-Model AI Chat Platform

AI Chat with Real-Time Web Search

Internal Admin Portal (RBAC)

MintOak Fintech Platform

AHMU – Online Pharmacy

Fylde Clinic – Online Pharmacy

One Store – E-Commerce Platform

SET ACOURSE

I don’t ship demos.
I ship things that stay up.

FIVE PORTS,
ONE HEADING

WHAT I’VE
CLAIMED

SET A
COURSE

I don’t ship demos.
I ship things that stay up.

FIVE PORTS,
ONE HEADING

WHAT I’VE
CLAIMED

SET A
COURSE