Tarun Singh - Backend Engineer

Technical Skills

Spring Boot, REST APIs, Microservices

MySQL, Complex Queries, Joins, CTEs, Window Functions (70+ problems solved)

Concurrent Caching, 90% Hit Rate Optimization, TTL Strategies

Render Deployment, Production Monitoring, System Observability

Git, Maven, Postman, WebSocket, Concurrent Programming

Technologies: Spring Boot, ConcurrentHashMap, JMeter, WebClient

Live Demo GitHub

Engineered distributed caching layer achieving 90% cache hit rate, slashing API response times by 97% (200ms → 5ms) and reducing external API calls by 9x
Implemented thread-safe concurrent architecture using ConcurrentHashMap with TTL eviction, designed to handle 1000+ concurrent users while preventing race conditions
Built real-time analytics dashboard with live cache metrics, hit/miss ratios, and performance monitoring for system observability
Deployed to production on Render with automated health checks and uptime monitoring, maintaining 24/7 service reliability on free-tier infrastructure
Validated scalability via JMeter load testing with progressive user scaling from 10 to 1000+ concurrent users

Technologies: Spring Boot, Production Deployment

Live Demo GitHub

Built REST API processing 50+ daily requests, extracting structured appointment data (date, time, location) from unstructured text with 95% accuracy
Implemented comprehensive error handling and input validation, reducing failed requests by 80% through meaningful error messages and retry logic
Integrated with external AI services and deployed on Railway with health checks, serving live production traffic with 99%+ uptime

LeetCode

Electrical Engineering

NIT Bhopal | 2026

Relevant Coursework: Data Structures, Algorithms, Database Systems, Signal Processing

Electrical Engineering