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shree-vaths/README.md

Hi, I'm Shreevaths Karawal Satish Rao 👋

Software Engineer • Backend & Cloud Systems • Security-Minded Builder

👨‍💻 About Me

  • 🎓 Master's in Computer Science, Illinois Institute of Technology (GPA: 4.0)
  • 💼 4+ years of experience building secure, scalable backend and cloud systems across fintech and retail platforms
  • 🛡️ Mitigated an active bot-driven DoS attack, cutting malicious traffic by 80% within 48 hours
  • ⚡ Cut checkout latency by 500ms and eliminated long-lived CI/CD credentials using OIDC + AWS STS
  • 💳 Built PCI-compliant payment infrastructure supporting 50K+ international customers
  • 📍 Based in Chicago, IL

🧰 Tech Stack

Languages JavaScript TypeScript Java Node.js C++

Frameworks Express.js Spring Boot React Redux

Databases PostgreSQL MongoDB DynamoDB MySQL

Cloud & Infra AWS AWS Lambda Docker RabbitMQ Redis Kafka

Tools Git GitHub Actions Bitbucket Jira

💼 Experience Highlights

Software Engineer @ One Community Global (Jul 2026 – Present)

  • Built a full-stack expenditure-reporting feature (TypeScript, React Hooks, Node.js) with 100% test coverage, replacing a manual spreadsheet and saving 15+ hours/week

Associate Software Development Engineer II @ Publicis Sapient (Jan 2022 – Jul 2024)

  • Mitigated an active DoS attack with a reCAPTCHA v2/v3 defense layer within 48 hours, cutting malicious traffic by 80%
  • Reduced checkout latency by 500ms via an automated Node.js/Lambda/EventBridge pipeline into DynamoDB
  • Built PCI-compliant payment infrastructure (Java, Spring Boot, PostgreSQL) for 50K+ international customers
  • Eliminated long-lived CI/CD credentials by implementing OIDC + AWS STS token exchange

Associate Software Development Engineer I @ Publicis Sapient (Jul 2020 – Dec 2021)

  • Integrated Kakao social login, growing Korean-market signups and accessibility by 15%
  • Built a geolocation-based store locator supporting an omnichannel retail initiative

🚀 Featured Projects

🔗 URL Shortener with Custom Encoding & Distributed Caching

TypeScript Node.js/Fastify PostgreSQL Drizzle ORM Redis Zod

  • Custom base62 encoding generating collision-free, non-sequential short codes
  • Two-tier caching (in-process LRU + Redis) with hot-key detection and 8-way shard replication
  • Atomic Redis Lua token-bucket rate limiter with SHA-256 API key authentication

🔗 Distributed Job Scheduler with Retry Backoff & Dead-Letter Recovery

Java Spring Boot PostgreSQL RabbitMQ Spring Data JPA

  • Horizontally-scalable scheduler decoupling Postgres-backed scheduling from RabbitMQ execution
  • RabbitMQ TTL + dead-letter-exchange retry ladder with an admin replay API
  • Idempotent, crash-safe state transitions handling duplicate/orphaned jobs under at-least-once delivery

🎓 Education

  • M.S. Computer Science — Illinois Institute of Technology (GPA: 4.0), Chicago, IL — Aug 2024 – May 2026
  • B.Tech Computer Engineering — RV College of Engineering, Bangalore, India — Aug 2016 – May 2020

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