Full-Stack Architect · LLM / RAG / LangChain · Chennai

I architect systems
that scale, learn
and perform.

From real-time enterprise monitoring platforms to AI-powered analytics, I turn complex business problems into scalable software systems.

Available for freelance professional services · 3–5 hrs/day · IST with US/EU overlap
By the numbers
10+Years experience
10K+Concurrent users
1M+API requests / day
99.9%Platform uptime
Built for
Cognizant
Kimberly-Clark
Fortune Brands
Enterprise Minds
Visics
Aarthi Manickam
Aarthi ManickamFull-Stack Architect
AI Engineering

Building with large language models

Not just calling an API — designing the retrieval systems, agent workflows and pipelines that make LLMs useful in production.

Core Capability

RAG Pipelines

Retrieval-Augmented Generation systems that ground LLM responses in your enterprise data — vector search, chunking strategy, embedding pipelines, reranking and context window management.

LangChainFAISS / PineconeOpenAI Embeddings
Agents & Orchestration

LangChain Agents

Multi-step agent workflows with tool use, memory and structured output — connected to internal APIs, databases and monitoring systems.

LangChainLangGraphTool CallingMemory
Analytics & Detection

ML in Production

Anomaly detection, time-series scoring and predictive models shipped as FastAPI services — running on real enterprise event streams.

TensorFlowscikit-learnOpenAI APIFastAPI
Also:
Prompt EngineeringFine-tuningVector DatabasesSemantic SearchLLM EvaluationStreaming Responses
The Problems

What you might be dealing with

Most engineering challenges trace back to a handful of root causes.

A

Your platform can't keep up with growth

Systems built for 100 users buckle at 10,000. You need architecture that scales horizontally without a full rewrite.

B

Data flows but insights arrive too late

Events are streaming but nothing is connected. By the time you spot a problem, users have already noticed it.

C

AI feels like a distant goal, not a tool

Everyone is talking about ML and LLMs, but integrating intelligence into a production system is a different discipline.

D

Technical debt is slowing every delivery

The codebase has outgrown its architecture. Teams ship more bugs than features because the foundations aren't solid.

How I Can Help

Three ways to work together

Full-Stack Architecture

End-to-end system design — React frontends to microservices to data layers. Designed for maintainability and growth, not just the MVP.

React / Next.jsNode.js / NestJSMongoDB / Redis

Platform Engineering

Distributed systems built for real throughput — Kafka event pipelines, WebSocket real-time layers, Python workers that handle 100K+ events per second.

Kafka / RabbitMQPython / FastAPIAWS / Docker

AI / ML Integration

Embedding intelligence into production — RAG pipelines, LangChain agents, anomaly detection and natural-language interfaces built on your existing data.

LangChain / RAGOpenAI / LLMsTensorFlow
Selected Work

Three projects, three problems solved

Experience

10+ years, four companies

April 2024 – Present
Visics India ATG

R&D Lead Software Engineer

  • —Architected a MERN + Python monitoring platform serving 10,000+ concurrent users at 99.9% uptime
  • —Designed Node.js microservices (Express/NestJS) handling 1M+ API requests/day with event-driven flows via Kafka and RabbitMQ
  • —Built FastAPI workers processing 100K+ events/second with ML-based anomaly detection; optimized MongoDB pipelines cutting query time by 70%
October 2023 – April 2024
Enterprise Minds

Senior Software Engineer

  • —Architected a MERN e-commerce platform processing 50,000+ daily transactions with SSR Next.js 14, improving SEO by 40%
  • —Reduced API latency to sub-200ms through Redis caching; achieved 95+ Lighthouse scores and 85% test coverage
  • —Led a TypeScript migration cutting runtime errors by 40%; implemented an API Gateway with the BFF pattern
January 2022 – October 2023
Fortune Brands / Cognizant

Senior Associate

  • —Designed an enterprise multi-tenant SaaS platform serving 50,000+ users with MERN + Python
  • —Architected Express REST APIs with multi-tenancy support; optimized MongoDB queries cutting response time by 60%
  • —Mentored 5+ engineers on React, Node.js and MongoDB best practices; led technical interviews
2016 – 2021
Kimberly-Clark / Cognizant

Associate / Programmer Analyst

  • —Led migration of 15+ legacy .NET applications to a modern MERN stack architecture
  • —Architected React financial systems serving 5,000+ users; improved performance by 50% across React Native mobile apps
  • —Managed 25+ production servers with zero-downtime blue-green deployments; established CI/CD with Jenkins and ELK monitoring
How I Work

From problem to production

01

Understand

Start with the business constraint — not the technical wish list. What's the actual bottleneck? What does success look like?

02

Architect

Shape data flow, service boundaries and failure modes before the first line of code is written.

03

Build

Clean, testable, maintainable code. No clever tricks that only I can read in six months.

04

Validate

Load-test, monitor, harden. Keep it reliable at 3am — not just at demo time.

About

Building at the intersection of scale and intelligence.

I'm a Full-Stack Architect with 10+ years building enterprise systems that handle real load — 10,000+ concurrent users, 100K+ events per second, 1M+ API calls a day.

My work spans the full stack: React frontends, Node.js microservices, Python processing workers, Kafka event pipelines, and AI/ML layers that make systems smarter over time.

Based in Chennai, India. Currently R&D Lead at Visics India ATG, architecting a MERN + Python monitoring platform for enterprise operations.

Get in touch
01

“Scale isn't something you bolt on — it's something you think through on day one.”

Every system I've shipped was designed for load from the first architecture decision.

02

“AI isn't a layer you add later. I architect it in from the start.”

LLMs, RAG pipelines, and intelligent agents work best when the data model is built around them.

03

“I measure success in uptime and outcomes, not features shipped.”

99.9% platform uptime and 1M+ daily API calls aren't accidents — they're decisions made early.

Contact

Ready to build
something together?

Whether you need a full-stack architect, a platform review, or help integrating AI — let's talk.

01
Architecture Review
Audit, gaps, roadmap — 1–2 weeks.
02
Fixed-Scope Build
MVP or AI feature, fast delivery.
03
Retainer
Embedded architect, 3–5 hrs/day.