Swarnakeshar Mukherjee
Open to work

Tech Lead · Full-Stack Architect

🇮🇳 Kolkata, IndiaGmailLinkedInGitHub
  • 5 yrs architecting scalable Node.js backends & React / React Native apps
  • Led 4-engineer team → 50K+ daily ops · 99.9% uptime
  • Expert in microservices · real-time WebSocket · AI/ML integrations
  • 5× throughput · 70% efficiency gains · 60–80% less manual work
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Years building
0K+
Daily operations
0×
Throughput gain
0
Engineers led
status:actively building · available for opportunities
Interview Me Virtually
01

Experience

Tech Lead

Pripton Innovations (opens in a new tab)

● Latest
Apr 2026 – PresentRemote, India

Lead engineering for the company's flagship B2B product, joining at a point when the in-house engineering function was close to non-existent. Built the team and its delivery practice alongside shipping, and act as the technical voice in client-facing discussions across the company's project portfolio. Engaged through October 2026, when v1 is planned.

What I did

  • Lead engineering on the flagship product, currently driving toward its v1 release
  • Established the engineering team, workflow and delivery practice where there was effectively no tech function
  • Deployed and operate a self-hosted CVAT instance for internal annotation work
  • Rebuilding the company's public website (in progress)
  • Technical support across internal operations and client-facing technical meetings

Built here

Self-Hosted Annotation Platform

Technical Consultant (Contract)

Pripton Innovations (opens in a new tab)

Dec 2025 – Mar 2026Remote, India

Engaged independently to take the company's catalogue onto AWS Marketplace. Designed and built the full-stack listing and SaaS billing integration for seven products, including automated provisioning that stands up a customer's environment on purchase with no manual setup.

What I did

  • Took seven products from nothing to live on AWS SaaS Marketplace
  • Built the SaaS billing integration end to end - customer resolution, entitlement checks and scheduled usage metering
  • Automated provisioning so a purchase configures a tenant without manual intervention
  • Solo engagement, scoped and delivered across four months

Built here

AWS Marketplace SaaS Platform — Listing, Registration & Metering

Senior Software Developer

Intelekt AI (formerly Techweirdo) (opens in a new tab)

Oct 2023 – Oct 2025Bengaluru, India

Lead end-to-end architecture and delivered production-grade systems serving 50K+ daily operations. Mentored 4 junior developers with 10+ code reviews per week, established coding standards, and spearheaded sprint plannings with 100% on-time delivery. Orchestrated monolith-to-microservices transitions, improving system maintainability and performance.

What I did

  • Architected production AI defect detection systems for 2 manufacturing clients — 70% efficiency gain, 99.9% uptime, 50K images/day, 3-month POC to live deployment
  • Led React Native + NestJS mobile platform from concept to production — real-time WebSocket messaging, Google Maps location matching, AI-powered photo verification
  • Solo-architected Medical Knowledge RAG platform — vector search over medical literature, 60% query latency reduction via Elasticsearch + Redis caching
  • Spearheaded monolith-to-microservices migration achieving 5× throughput improvement and 60–80% reduction in manual operational processes
  • Mentored 4 engineers: 10+ code reviews/week, enforced coding standards, 100% sprint on-time delivery

Built here

Property Market Data Platform & Automated ValuationConversation Intelligence for Contact CentresSustainability & Rewards Fintech PlatformReal-Time Social Meetup PlatformOn-Premise AI Defect Detection PlatformMedical Knowledge RAG PlatformCorporate Food Services Management Platform

Software Developer

Intelekt AI (formerly Techweirdo) (opens in a new tab)

Aug 2021 – Sep 2023Bengaluru, India

Full-stack development across multiple client projects. Built document automation, OCR systems, WhatsApp workflow bots, and community platforms.

What I did

  • Document Automation System (FastAPI, React, MySQL, OCR) — processed 150+ documents/month with 84% accuracy using intelligent multi-engine OCR selector (Tesseract, AWS Textract)
  • Bank Passbook OCR + Analysis (Python, OCR) — designed intelligent extraction system achieving 80% accuracy, eliminating manual data entry bottlenecks
  • WhatsApp Workflow Bot (Node.js, React, MongoDB) — event-driven bot with custom API integrations increasing response throughput by 50% for 200+ daily interactions
  • Community Event Platform (React, Redux Saga, Cypress) — led frontend redevelopment cutting load times 30%, championed E2E testing framework

Built here

Bank Passbook OCR & AnalysisWhatsApp Workflow Automation Bot

Freelance Developer

Freelance Developer

Jun 2019 – Jun 2021Bengaluru, India

Independent projects helping businesses streamline operations and improve software usability.

What I did

  • Automated Assessment & Learning Tool (React, JavaScript, Firebase) — interactive learning and evaluation platform with real-time assessments, AI-driven feedback, and adaptive learning paths

Built here

Automated Assessment & Learning Tool
02

Projects

Built for myself

Nobody commissioned these. They run on infrastructure I pay for and administer, which is the only reason they are worth showing.

03

Skills

Backend Engineering

Node.jsNestJSExpressFastAPIPythonRESTful APIsWebSocketMicroservicesEvent-Driven ArchitectureJWTOAuth

Frontend & Mobile

ReactReact NativeTypeScriptZustandTanStack QueryRedux SagaElectron.jsTamaguiNext.jsTailwind CSS

Data & Search

MongoDBPostgreSQLMySQLRedisElasticsearchVector DatabasesQuery OptimizationDatabase IndexingSQLAlchemyAlembic

AI/ML Integration

RAG SystemsVector SearchFAISSOCR (Tesseract, AWS Textract)AI Model DeploymentPipeline ArchitectureGoogle GeminiLLM Integration

DevOps & Tools

DockerGitHub ActionsBitbucket CI/CDLinux Server AdministrationSambaGitAWS S3Cypress

Leadership & Architecture

System DesignMicroservices ArchitectureTechnical MentorshipSprint PlanningCode ReviewsCross-Functional Collaboration
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Growth Timeline

05

Achievements

Hackathon

IBM Hack Challenge 2019 — Finalist

Friend Affinity Finder — social graph-based friend recommendation system

Achievement Unlocked
Public Speaking

Debate Competition — 2nd Place

Devil's Advocate format, Jalpaiguri Government Engineering College (2018)

Achievement Unlocked
06

Education

Post Graduate Diploma in Software Development

International Institute of Information Technology, Bangalore

Bengaluru, India2020 – 2021
DGPA: 3.7/4

B.Tech in Computer Science & Engineering

Jalpaiguri Government Engineering College (MAKAUT)

Jalpaiguri, India2017 – 2020
DGPA: 7.89/10

Diploma in Computer Science & Technology

Budge Budge Institute of Technology (WBSTCE)

Kolkata, India2014 – 2017
DGPA: 8.7/10 | Class: 1 (Distinction)
07

Blogs

08

Learning & Notes

On it right now

Covered

LearnedFrontend & Mobile

The 1.5 MB I never wrote

Incident: Portfolio performance pass — measure, then fix

My site scored 23 on mobile. I had three suspects and all three were innocent. The biggest cost was a single prop that downloaded a 1.5 MB file from someone else's GitHub on every page load.

performancelighthouseweb-vitalsthreejsRead notes →
LearnedAI/ML Integration

Building a voice avatar, then deleting it

Incident: Mini-Me voice stack — build, measure, replace

A GPU voice stack that worked, cost ₹520–620/month, and was never switched on. Five reasons it sounded robotic, and only one of them was the model.

voicegemini-liveasrttsRead notes →