rajat@microservices: ~/portfolio
$ cat about.txt
──────────────────────────

Rajat Kumar Singh

Senior Java Developer

$ cat stats.json
0
years_experience
0
performance_boost_%
0
system_uptime_%
0
microservices_deployed
$ ./execute_actions.sh
[ contact_me ] [ resume ] [ view_projects ]
profile.img
Rajat Kumar Singh
STATUS: Available for opportunities (Immediate/Negotiable)
$ ls -la /skills

Technical Arsenal

> Mastering modern Java microservices to build scalable enterprise systems

⚙️ core_backend
  • Java 8+
  • Spring Boot
  • Spring MVC
  • Spring Data JPA
  • Hibernate ORM
  • SQL
🔐 security
  • Spring Security
  • JWT Authentication
  • OAuth2
  • API Security
  • Role-Based Access
🏗️ microservices
  • Spring Cloud
  • Eureka Discovery
  • API Gateway
  • Feign Client
  • Resilience4j
  • REST APIs
📡 messaging
  • Apache Kafka
  • Event-Driven Architecture
  • Message Queues
  • Async Processing
🗄️ databases
  • MySQL
  • PostgreSQL
  • MongoDB
  • Oracle DB
  • SQL/NoSQL
🧪 testing
  • JUnit 5
  • Mockito
  • Integration Testing
  • Unit Testing
☁️ devops_tools
  • Docker
  • Maven
  • Git
  • CI/CD Pipelines
🔧 api_tools
  • Postman
  • Swagger
  • API Documentation
  • SLF4J / Logback
$ git log --all --graph

Career Timeline

> Building scalable microservices in a product-based environment

[ Dec 2022 – Present ]

Senior Java Developer

Proounce Solution, Hyderabad (Product Based)

Building high-performance microservices architecture for enterprise applications

  • Designed and developed scalable microservices using Java 8 and Spring Boot
  • Built RESTful APIs handling high-volume transactions with optimal performance
  • Implemented service discovery using Eureka and API Gateway for routing
  • Secured APIs using Spring Security and JWT authentication mechanisms
  • Integrated MySQL and MongoDB databases using Hibernate/JPA
  • Implemented Kafka-based asynchronous communication between services
  • Dockerized applications ensuring consistent deployments across environments
  • Collaborated with DevOps teams for CI/CD execution and production releases
  • Wrote comprehensive unit and integration tests using JUnit and Mockito
  • Improved API performance by approximately 30% through optimization
$ tree ./projects -L 2

Featured Projects

> Enterprise applications architected and delivered with excellence

📊 ACTIVE

Financial Report Management

Comprehensive financial reporting platform with Microsoft Word-like rich text editor capabilities. Features end-to-end document workflows from creation to publishing, with advanced PDF/Word generation using Aspose library. Includes role-based access control and automated reporting workflows.

Java 8 Spring Boot REST APIs Aspose Spring Security JPA/Hibernate Oracle DB
🏗️ PRODUCTION

Microservices Ecosystem

Designed and implemented enterprise microservices architecture with service discovery, API gateway, and inter-service communication. Features include circuit breakers, distributed tracing, centralized configuration, and event-driven architecture using Kafka.

Spring Cloud Eureka API Gateway Feign Client Resilience4j Kafka Docker
🔐 ACTIVE

Authentication & Authorization System

Enterprise-grade security solution implementing JWT-based authentication and role-based access control. Features include token refresh mechanisms, OAuth2 integration, secure password handling, and comprehensive audit logging for compliance requirements.

Spring Security JWT OAuth2 MySQL Redis
$ cat /etc/contact.conf

Get In Touch

> Available for opportunities in Hyderabad, Bangalore, Pune, Mumbai

📧
email:
superrajat82@gmail.com
📱
phone:
+91 83182 44052
📍
location:
Hyderabad, India
🎓
education:
MCA | Osmania University