Hello, I'm

Rajesh Venkatesan

Senior Systems Analyst & Full-Stack Engineer

From building AI pipelines to shipping scalable systems.

About Me

Who I Am

I'm a Senior Systems Analyst & Full-Stack Engineer with over 5 years of experience building production-grade software across web development, cloud architecture, GenAI, and DevOps.

My recent work includes designing an enterprise AI-powered recruitment automation platform that leverages web crawlers, RAG pipelines, and LLM-driven email generation—cutting manual HR effort by 80%.

I thrive on solving hard scaling problems: taking API systems from 200 to 10,000+ QPS, dockerizing entire microservice stacks, and mentoring teams to ship faster with structured engineering practices.

Day to day I live on Linux for shells, servers, and debugging near production—and I pair that stack with modern AI-native editors when I want fast iteration without cutting corners on quality.

Years Experience

50x

API Scaling

87.5%

Faster Deployments

10K+

QPS Achieved

Tech Stack

Technologies I Work With

Languages

Python

JavaScript

TypeScript

PHP

SQL

HTML/CSS

GenAI & ML

LLMs (GPT/Claude)

RAG Pipelines

LangChain

Vector Databases

Prompt Engineering

Web Scraping

Frontend

React.js

Next.js

Angular

Redux

Tailwind CSS

React Native

Backend

Node.js

Express.js

Django

FastAPI

Laravel

Adonis.js

Kafka

Databases

PostgreSQL

MongoDB

Redis

MySQL

ChromaDB

Pinecone

Cloud & DevOps

AWS (EC2, ASG, ALB)

GCP

Docker

CI/CD Pipelines

Linux & Bash

NGINX / OpenResty

IDEs & AI assistants

Cursor

Claude Code

Google Antigravity

Windsurf

Kilo Code

Tools

Git

n8n

GIS Technologies

Three.js

Career

Work Experience

Senior Systems Analyst

kCube Consultancy Services

March 2021 — Present

Remote

Designed and deployed an AI-Powered Recruitment Outreach Automation Platform, reducing manual HR effort by ~80%
Engineered intelligent web crawling pipeline for autonomous job discovery across multiple platforms
Built RAG pipeline ingesting historical correspondence into vector store, grounding LLM outputs in authentic company tone
Scaled enterprise API infrastructure from 200 to 10,000+ QPS (50x) using AWS Auto Scaling with multi-zone failover
Built custom API gateway rate limiter with NGINX/Lua (OpenResty) for per-key QPS restrictions and DDoS protection
Engineered full-stack GIS application serving 1,000+ daily users with supply chain analytics
Led DevOps transformation: Dockerized microservices stack, cutting deployment time from 2h to 15min (87.5% reduction)
Mentored team of 3 developers, improving delivery timelines through code reviews and agile practices

PythonLangChainOpenAI/Claude APIChromaDBFastAPIReact.jsNext.jsNode.jsDjangoAngularLaravelPostgreSQLMongoDBAWSDockerNGINX

Full Stack Web Developer — Intern

Digifloat

November 2020 — March 2021

Rajasthan

Developed full-stack service tracking application with 10+ role-based functionalities
Integrated PayPal and Stripe payment gateways for seamless transaction processing
Architected scalable application using React, Adonis.js, and MySQL

React.jsAdonis.jsMySQLPayPal APIStripe API

Education

Karunya Institute of Technology and Sciences

Bachelor of Technology (B.Tech) — Electronics and Communication Engineering

Coimbatore, India · 2020

Work

Featured Projects

A selection of projects spanning AI/ML, full-stack development, infrastructure, and open-source contributions.

Harbor

Self-hosted web search and RAG platform — run retrieval and context generation on your own infrastructure. Built with Python and vector database integration.

PythonRAGVector DBSelf-hosted

Source

AI Recruitment Platform

End-to-end AI-powered recruitment outreach automation. Intelligent web crawling discovers jobs, RAG pipeline grounds LLM outputs in company tone, auto-generates personalized outreach emails.

PythonLangChainChromaDBFastAPIOpenAI API

Private / Enterprise

Splendor Online

Online multiplayer version of the Splendor board game. Real-time gameplay with TypeScript for a smooth, interactive experience.

TypeScriptWebSocketGame Logic

Source Live Demo

GIS Supply Chain Analytics

Full-stack GIS application serving 1,000+ daily users with complex supply chain analytics and geospatial visualization powered by Google Maps.

AngularDjangoGoogle MapsPostgreSQL

Private / Enterprise

API Gateway Rate Limiter

Custom API gateway rate limiter built with NGINX and Lua (OpenResty). Per-API-key QPS restrictions with dual-layer DDoS protection, scaling to 10,000+ concurrent requests.

NGINXLuaOpenRestyAWS

Private / Enterprise

Kanban Dashboard

Drag-and-drop project management board with intuitive UI for task organization and team collaboration.

JavaScriptReactDrag & Drop API

Source

Beyond work

Hobbies & interests

Things that keep me curious, competitive, and recharged when I'm away from the keyboard.

Gamer

MOBAs, tac-shooters, battle royales, sports sims — strategy, comms, and clutch moments. Franchises I play most:

Dota 2

Valorant

Apex Legends

Deadlock

FC / FIFA

PS5

Explorer

New places, local food, and long drives — travel is a reset button and a reminder that there's more than one valid approach to any problem.

Tech enthusiast

Always tinkering: LLMs, dev tooling, self-hosted stacks, and what's new in the browser. Side projects and deep dives are how I stay sharp between sprints.

Blog

Writing & notes

Long-form writing on running systems in the real world: cloud and platform engineering, GenAI and data pipelines in production, API design, and lessons learned on teams shipping under pressure. Fewer hot takes, more notes you can steal from.

All posts

2024-12-15

Building Scalable Systems: Lessons from Scaling High-Traffic APIs

From early traffic to sustained high load: Auto Scaling, gateway rate limits at the edge, and why observability had to come first.

AWSInfrastructureDevOpsNGINX

Contact

Get in Touch

I'm always open to discussing new projects, opportunities, or just having a good conversation about technology and engineering.

Vellore, Tamil Nadu— Available Remote

GitHub LinkedIn [email protected]