"Always ship clean architecture." — self ✍️

Senior Software Engineer

I build things that think & scale.

Crafting AI-powered architectures, secure multi-tenant backends, and vector search infrastructure at ABI Health. From RAG pipelines to Flutter apps — I make complex systems elegant.

RAG Pipelines Postgres RLS FastAPI ASP.NET MVC pgvector Flutter Docker

Test My Work View Resume

Rajesh C. — Senior Software Engineer ✦

Interactive Pipeline Playground

Click a pipeline below to watch the execution flow in real-time.

Try the FastAPI tab to test live routes! ✍️

User Prompt Ingestion

Sanitize & tokenize

Embedding Generation

1536-dim vector

pgvector Cosine Search

HNSW index + RLS filter

LLM Synthesis

Grounded streaming response

× − ⤢

// Click a pipeline tab to begin simulation.

root@abi:~$ idle

Where I've Built Things

3+ years shipping production systems ✍️

Senior Software Engineer

ABI Health•Dec 2025 – PresentCURRENT

Architecting custom RAG pipelines & LLM microservices using Python, FastAPI, and Supabase / Postgres Vector.
Leading cross-platform mobile delivery with Flutter — high UI fluidity & secure API sync.
Orchestrating containerized microservices with Docker and automated CI/CD for zero-downtime releases.

PythonFastAPIRAGpgvectorFlutterDocker

System Analyst

ABI Health•Sep 2023 – Nov 2025

Engineered full-stack backend in ASP.NET MVC (C#) & RESTful APIs for mission-critical healthcare ops.
Implemented enterprise-grade Row-Level Security (RLS) in PostgreSQL for tenant-isolated medical data.
Optimized legacy queries — achieved up to 40% reduction in API response latency.

ASP.NET MVCC#PostgreSQL RLSREST APIs

Software Engineer

DIT, Tripura•Jan 2022 – Aug 2023

Built scalable Government Enterprise Web Apps using ASP.NET MVC and native Android applications for public governance initiatives.

ASP.NET MVCC#Android NativeSQL Server

The Stack I Sketch With

Currently deep-diving into agentic AI ✍️

AI & GenAI

RAG PipelinesLangChain, LlamaIndex

Vector DatabasesSupabase, pgvector

Custom LLMsOpenAI, Ollama

Semantic SearchCosine Sim, HNSW

Backend & APIs

Python & FastAPIAsync, Pydantic

ASP.NET MVC & C#Enterprise APIs

PostgreSQL RLSMulti-tenant

Node.jsMicroservices

Mobile

FlutteriOS / Android

Android StudioNative Tooling

DevOps

DockerContainers & Compose

CI/CDGitHub Actions

RAG / AI Vector Pipelines

Postgres RLS + pgvector

FastAPI Async Python

ASP.NET C# MVC

Flutter Cross-Platform

Docker CI/CD

↕ Drag to rotate the cube

LangChain

Supabase

Pydantic

HNSW

REST API

Ollama

The Resume — Unfolded

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📄 Resume.pdf

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Email
rajesh2021.it@gmail.com

GitHub
rajeshc-git

LinkedIn
rajesh-chowdhury