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SNagarjuna07/README.md

S Nagarjuna

Backend Engineer - Distributed Systems · Java / Spring Boot · AI Infrastructure

LinkedIn

About

I build backend systems and load-test them until they fail, on purpose, so I know exactly how they degrade. Integrated MCA student at Amrita Vishwa Vidyapeetham, seeking a Summer 2027 Software Engineering Internship. Focus: microservices architecture, resilience engineering, and applied AI infrastructure (RAG, tool-calling agents, MCP).

Highlights

  • Designed and load-tested a 6-service microservices platform to 1,576 req/s peak, 0% failure rate across 284,485 requests - circuit breakers degrade latency under overload instead of dropping requests. shortlyai
  • Built distributed transaction handling with Kafka SAGA choreography - no central orchestrator, failed events persisted and retried via ShedLock instead of relying on a managed DLQ. shortlyai
  • Shipped 4 independent Spring AI services covering streaming chat, scoped tool-calling, Retrieval-Augmented Generation (RAG), and Model Context Protocol (MCP) - each isolating one architectural pattern rather than one monolithic AI demo. spring-ai-chat-service · spring-ai-task-manager · spring-ai-rag-service
  • Enforced a human-in-the-loop safety boundary for destructive operations across two unrelated architectures (direct tool-calling and MCP) - AI can propose an action, never execute one. spring-ai-task-manager
  • Load-tested a second backend to 8,000 requests, 100 concurrent users, 0.00% error rate, designed explicitly around cache-outage and async-failure edge cases, not just the happy path. Food-Waste-Management

Stack

Languages & Frameworks

Java Spring Boot Spring Security Spring Cloud Spring Data JPA Python

AI / LLM

Spring AI MCP RAG Groq Ollama

Auth & Security

JWT OAuth2 BCrypt API Key Auth

Data & Caching

PostgreSQL pgvector MySQL H2 Liquibase Redis MongoDB

Messaging & Resilience

Kafka SAGA DLQ Resilience4j Circuit Breaker Retry Bulkhead Time Limiter ShedLock Eureka

API & Docs

REST API Swagger Jakarta Validation

Observability

Prometheus Grafana Loki Promtail Micrometer SLF4J

Testing & Load

JUnit 5 Mockito k6 JMeter Postman

Infra & Tools

Docker Docker Compose GitHub Actions Maven Lombok IntelliJ IDEA Git

Pinned Loading

  1. shortlyai shortlyai Public

    Production-grade URL shortener built with Java 25 + Spring Boot (4.0.0) microservices, Redis, Kafka, and Spring AI

    Java 4

  2. spring-ai-mcp-server spring-ai-mcp-server Public

    MCP server exposing task-management tools over the Model Context Protocol using Spring AI 2.0.0-M6. Lets Claude Desktop call and manage real tasks in Postgres directly, with destructive delete deli…

    Java 1

  3. Food-Waste-Management Food-Waste-Management Public

    A Spring Boot backend for managing food waste donations with JWT authentication, Redis-based rate limiting, MongoDB storage, Kafka notifications, and production-grade configuration using environmen…

    Java 1

  4. Finance-Data-Processing-System Finance-Data-Processing-System Public

    A backend system for a Finance Dashboard built with Spring Boot, designed to manage financial records, control user access, and deliver aggregated analytics through clean and reliable REST APIs.

    Java 1