Software Engineer · AI/ML · Backend Systems

Hariharan S

Python · Java · FastAPI · RAG · YOLOv8 · Docker
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Hariharan S
Hariharan S
Integrated M.Tech · VIT Vellore · CGPA 8.07

M.Tech Software Engineering student at VIT Vellore specialising in backend systems and applied ML. Author of 2 published patents in cryptographic authentication and federated learning. Holds AWS ML Engineer and Solutions Architect certifications. Active open source enthusiast — contributor to production codebases used by tens of thousands of developers.

3Projects
4+OSS Repos
2Patents
5+Certifications
8.07CGPA
Python & Java
FastAPI · REST APIs
Retrieval-Augmented Generation
YOLOv8 · Computer Vision
Docker & Firebase
AWS Cloud Practitioner
Open Source Contributor
VIT Vellore
Python & Java
FastAPI · REST APIs
Retrieval-Augmented Generation
YOLOv8 · Computer Vision
Docker & Firebase
AWS Cloud Practitioner
Open Source Contributor
VIT Vellore
Skills

Technical Stack

Languages
  • Java
  • Python
  • JavaScript
  • SQL
Backend
  • FastAPI
  • Node.js
  • REST APIs
  • Authentication
  • SSE Streaming
Databases
  • SQLite
  • Firebase
  • Supabase
AI / ML
  • RAG Pipelines
  • YOLOv8
  • TabNet
  • Scikit-learn
  • NLP
Cloud & DevOps
  • AWS (EC2, S3, IAM)
  • Docker
  • Git
  • GitHub
  • Linux
Data & Retrieval
  • ChromaDB
  • FAISS
  • Pandas
  • NumPy
CS Fundamentals
  • Data Structures & Algorithms
  • OOP
  • Computer Networks
  • Operating Systems
  • HTTP / TCP-IP
Engineering Work

Selected Projects

01

StructRAG: Hybrid Tree-Boosted RAG for Academic Document Analysis

Builds a hierarchical section tree during ingestion using a 13-type academic ontology. ATB-RRF algorithm fuses vector similarity with structural signals at query time — achieving 23–41% better retrieval over vector-only RAG at just 3ms extra latency. Powered by ChromaDB, Gemini Flash, and streaming SSE responses with citation highlighting.

PythonFastAPIChromaDBGeminiATB-RRF
GitHub
02

Sugarcane Pest Detection System

AI-powered early detection of sugarcane pests using YOLOv8 for image detection and TabNet for tabular prediction. Containerised with Docker, served via FastAPI.

YOLOv8TabNetFastAPIDocker
GitHub
03

Campus Ride — College Ride Sharing

Android ride-sharing app with real-time ride posting, Firebase Authentication, Realtime Database, and Google Maps SDK for route visualisation and navigation.

AndroidFirebaseGoogle MapsJava
GitHub
Open Source

Upstream Contributions

★ 25,000+
Zulip
Preserve Indentation When Continuing Lists

Fixed indented list continuation bug in TypeScript (composebox_typeahead.ts) — correctly preserves indentation when continuing indented markdown lists in the message composer.

TypeScript PR #38394 ✓ MERGED
View Merged PR
Webiu · c2siorg (GSoC org)
Redis Caching & Docker Resource Limits

Added optional Redis distributed caching with in-memory fallback. Fixed truthy cache checks, missing unit tests, and Docker memory/CPU limits to prevent host exhaustion.

Node.jsRedisPR #545 OPEN PR
View PR
HiperHealth · AI Health Platform
5 Fixes: LLM Safety & Resilience

LiteLLM retry with exponential backoff, zero-shot MNLI safety guardrails, SQLAlchemy type mapping, wearable sensor data validation, and test teardown connection cleanup.

PythonLLMPR #211 OPEN PR
View PR
ESP-Website · MIT Learning Unlimited
Scheduler UI Fix & Unit Tests

Fixed the scheduler UI to display same-classroom sections in the section info panel. Added unit tests for the LotteryFrontendModule ensuring robust scheduling logic.

PythonDjangoPR #5297 OPEN PR
View PR
Intellectual Property

Published Patents

📄 APP. NO: 202641056093
Secure Toll Management System With Cryptographic Authentication And Transaction Sequencing
Dr. Priya V, Hariharan S, N Sakthivel, C Edward · May 2026
PATENT PUBLISHED
📄 APP. NO: 202641065392
Federated Physics-Informed Neural Network System For Semiconductor Quality Control
Dr. E.P. Ephzibah, Hariharan S · May 2026
PATENT PUBLISHED
Recognition

Achievements & Certifications

🏆 FIRST PRIZE
Agrithon 2.0 Hackathon
DBT Sponsored · VIT Vellore
View Credential
AWS CERTIFIED
ML Engineer – Associate
Amazon Web Services
View Credential
AWS CERTIFIED
Solutions Architect – Associate
Amazon Web Services · SAA-C03
View Credential
AWS CERTIFIED
Cloud Practitioner
Amazon Web Services
View Credential
MICROSOFT AZURE
Azure AI Fundamentals AI-900
Microsoft Learn
View Credential
📚 STANFORD
Machine Learning Specialization
Stanford University · Coursera
View Certificate
Education

Academic Background

SEP 2022 — PRESENT
Integrated M.Tech in Software Engineering
Vellore Institute of Technology (VIT), Vellore
CGPA: 8.07 / 10
JUN 2021 — MAY 2022
Higher Secondary (State Board)
Sunbeam Matriculation School, Vellore
Percentage: 84.8%
Available for Roles · Internships · Collaborations

Currently
accepting offers