Tarun Singh

Backend Engineer | Spring Boot | SQL | Performance Optimization

Technical Skills

Backend Frameworks

Spring Boot, REST APIs, Microservices

Databases & SQL

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

Caching & Performance

Concurrent Caching, 90% Hit Rate Optimization, TTL Strategies

Cloud & DevOps

Render Deployment, Production Monitoring, System Observability

Tools

Git, Maven, Postman, WebSocket, Concurrent Programming

Projects

High-Performance Caching Proxy

Technologies: Spring Boot, ConcurrentHashMap, JMeter, WebClient
  • 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

AI-Powered Appointment Parser API

Technologies: Spring Boot, Production Deployment
  • 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

Certifications & Achievements

HackerRank Intermediate SQL Certification

Solved 70+ Complex SQL Problems

LeetCode

GATE 2025 Qualified

Electrical Engineering

Education

Bachelor of Technology in Electrical Engineering

NIT Bhopal | 2026

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

GATE 2025 Qualified

Electrical Engineering