Welcome to my GitHub.

I'm an undergraduate Computer Science and Engineering student passionate about building secure, scalable systems and exploring machine learning, system design, and backend development.

I enjoy solving real-world problems with thoughtful engineering and clean, efficient code.

• Backend Development & System Design
• Applied Machine Learning & Natural Language Processing
• Cryptography & Blockchain Concepts
• Distributed Systems & Cloud Infrastructure (Learning)
• DevOps (Docker, Kubernetes, Jenkins, NGINX etc) (Learning)
• Competitive Programming & Algorithms

A collection of production-grade systems, and large-scale backend applications focused on distributed systems, real-time data processing, security, and infrastructure engineering.

Most of these systems are deployed in real environments, built with an emphasis on correctness, scalability, observability, and clean system design.

I have heavily been involved with the entire system design along with participating heavuly in backend developemt :)

Deployed for SSN College & SNU Chennai | 2025

A real-time mobility tracking backend serving thousands of concurrent users during peak traffic hours.

• Real-time location tracking system serving 3,000+ concurrent users
• Redis-backed in-memory state engine for millisecond-level reads
• Hot-path isolation to remove databases from live request handling
• Concurrent GPS ingestion from heterogeneous vendor APIs
• Adaptive polling windows based on freshness and traffic load
• Full on-prem deployment with production observability

• Keyed in-memory state model (busId → live location)
• Last-write-wins update semantics
• Stateless backend services
• Read-heavy optimization using Redis as authoritative state store

Tech Stack
Java • Spring Boot • Redis • PostgreSQL • Docker • NGINX • Prometheus • Grafana

Deployed for SSN Invente Technical Fest | 2025

A Kafka-based real-time payment reconciliation platform built to process thousands of digital transactions with strong correctness guarantees.

• Event-driven reconciliation pipeline using Kafka
• Stateful stream processing with joins, aggregations, and windowing
• Redis-backed email ingestion system for payment receipt detection
• Idempotent processing to prevent duplicate reconciliation
• Load-tested at 50,000+ records per minute using K6
• Fully containerized production deployment

• Kafka producers and consumers
• Kafka Streams with time-windowed joins
• Redis-backed deduplication
• Transaction reconciliation pipelines
• Observability and throughput benchmarking

Tech Stack
Java • Spring Boot • Apache Kafka • Kafka Streams • Redis • PostgreSQL • Docker • K6

🔗 https://github.com/AvGeeky/kpaymentpipeline

Deployed for SSN College | 2025

A production-grade attendance system designed to eliminate proxy marking and manual verification overhead.

• Dynamic time-rotating QR codes
• One-time attendance codes for quick sessions
• Manual mode with teacher overrides
• Cryptographic device-bound verification
• Live attendance dashboards
• On-prem deployment

• HMAC-based authentication using device-bound secrets
• Time-limited code expiry
• Replay attack prevention
• Redis-managed verification windows

• Redis for real-time verification state
• MongoDB for persistent academic records
• Time-based validation engine
• SSE-driven live updates

Tech Stack
Java • Spring Boot • Redis • MongoDB • Docker • NGINX • JUnit • Jenkins

🔗 https://github.com/AvGeeky/AttendanceSystemBE 🔗 Demo: https://www.youtube.com/watch?v=YFHxfV337GY

A secure digital voting system focused on voter authenticity, privacy, and transparent verification.

• RSA-based vote encryption
• HMAC-secured Magic IDs for vote uniqueness
• PBKDF2-based authentication
• OTP login flow
• Immutable blockchain-style vote ledger
• Public vote verification interface

• Two-phase cryptographic voting
• Anonymous ballot storage
• Tamper-evident ledger design
• Modular backend services

Tech Stack
Java • Spring Boot • MongoDB • Cryptography • Docker

🏆 1st Prize — Encender Project Expo (CSE Department)

🔗

• Website: https://securvote.vercel.app
• Demo Video: https://youtu.be/4nAzh8N8cbA
• About: https://securvote.vercel.app/about

An intelligent interview platform combining technical assessment with behavioral analysis.

• Resume- and rubric-driven question generation
• Live coding interviews via Judge0
• Face detection and audio processing
• Sentiment analysis and automated summaries

🏆 1st Place — InnovateX National Hackathon (100+ teams)

Tech Stack
Python • AI/ML • Judge0 • Audio Processing

A collaborative learning ecosystem focused on incentivized education.

• Gamified in-app currency system (Stars)
• Community-generated learning roadmaps
• Dynamic teacher–learner role switching

Built within 24 hours during Envision SSN.

Tech Stack
Spring Boot • Web • Gamification Systems

• 🚆 Railway Reservation System (C) — Seat allocation, scheduling, and ticket workflows
• 🧍 Missing Persons Identification System — Facial recognition–based detection platform (high school project)

C	Java	Python	SQL

Spring	Flask	Scikit-learn

MongoDB	PostgreSQL	Redis	Docker	AWS

Git	GitHub	Linux	JetBrains	MongoDB Compass	Postman	Figma	Canva

• CLEF 2024 (JOKER Lab) – Genre classification of humorous text using transformer-based and traditional ML models.
• ILSUM 2024 – Multilingual text summarization using advanced NLG models like T5 and Gemini 1.0 Pro.