Pravinkumar O Singh | Java Developer

About Me

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Who I Am

I'm a passionate Java Backend Developer with 4+ years of experience building scalable, high-performance systems. I specialize in Spring Boot microservices, RESTful APIs, and distributed event-driven architectures.

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What I Do

I design and implement robust backend services, integrate messaging systems like Kafka, manage cloud deployments on AWS, and follow clean architecture principles with CI/CD pipelines.

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My Mission

To deliver enterprise-grade, maintainable software that drives business value — with a focus on performance, reliability, and developer experience.

Tech Stack

Core Languages

Java (8/11/17/21)

SQL

Shell Scripting

Frameworks

Spring Boot

Spring MVC / Security

Hibernate / JPA

Spring Cloud

Databases

PostgreSQL

MySQL

MongoDB

Redis

DevOps & Cloud

AWS (EC2, S3, RDS)

Docker / Kubernetes

Jenkins / GitHub Actions

Apache Kafka

Architecture & Tools

Microservices

REST / GraphQL

Git / GitHub

Maven / Gradle

Testing

JUnit 5

Mockito

Postman / Swagger

Work Experience

Java Developer

2022 – Present

Insolutions Global Pvt. Ltd.

Architected event-driven microservices using Apache Kafka reducing latency by 40%.
Led migration of monolithic app to Spring Cloud microservices serving 1M+ users.
Implemented JWT-based auth and OAuth2 integration for enterprise clients.
Mentored junior developers and conducted code reviews maintaining 95%+ code quality.

Spring BootKafkaPostgresDockerLinux

Featured Projects

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🔗 Code

Event-Driven Order System

A high-throughput order processing platform using Apache Kafka for real-time event streaming, Spring Boot microservices, and Docker orchestration. Handles 10,000+ orders/min.

Spring BootKafkaDockerPostgreSQL

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🔗 Code

Auth & Identity Service

Enterprise-grade authentication service with JWT, OAuth2, and Spring Security. Supports SSO, role-based access control, and multi-tenant support. Used by 50k+ users.

Spring SecurityJWTOAuth2Redis

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🔗 Code

Real-time Analytics Dashboard

Backend service aggregating live data streams into dashboards with WebSocket push notifications, Redis caching, and RESTful data endpoints consumed by React frontend.

WebSocketRedisSpring BootMongoDB

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🔗 Code

Cloud-Native Microservices

A set of loosely coupled microservices deployed on AWS EKS with service discovery via Eureka, API gateway, distributed tracing with Zipkin, and Kubernetes auto-scaling.

AWS EKSSpring CloudKubernetesZipkin

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🔗 Code

Healthcare Management System

Full-stack healthcare backend with appointment scheduling, patient record management, billing integration, and HIPAA-compliant data handling using Spring Boot + Hibernate.

Spring BootHibernateMySQLREST API

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