Manish Kumar

Java Full Stack Developer

Noida, Uttar Pradesh 4+ yrs exp 93 · Outstanding

About

Java Full Stack Developer with 4 years of end-to-end product delivery across multi-tenant OTT streaming, hotel booking, and SaaS billing platforms — serving 15+ enterprise clients across streaming, hospitality, and billing domains. Strong backend foundation in Java 8/11/17/21, Spring Boot microservices, Hibernate/JPA, REST APIs, RabbitMQ, Kafka, Hazelcast, and AWS; paired with hands-on frontend experience in Angular and React for complete feature ownership. Proficient in Python for automation scripts and backend tooling. Proven production impact: 5x API response improvement (400ms to 80ms), 35% DB load reduction, 85%+ test coverage, and 10K+ concurrent users supported.

Skills & Expertise (71)

Microservices Advanced

7.5/10

Years Exp

Rest API Advanced

7.5/10

Years Exp

Spring Boot Advanced

7.5/10

Years Exp

JUnit Advanced

7.5/10

Years Exp

Mockito Advanced

7.0/10

Years Exp

GitHub Advanced

7.0/10

Years Exp

Git Advanced

7.0/10

Years Exp

Integration Testing Advanced

7.0/10

Years Exp

Agile Advanced

7.0/10

Years Exp

Jira Advanced

7.0/10

Years Exp

MySql Advanced

7.0/10

Years Exp

Multithreading Advanced

7.0/10

Years Exp

CSS3 Advanced

7.0/10

Years Exp

HTML5 Advanced

7.0/10

Years Exp

React Advanced

7.0/10

Years Exp

Angular Advanced

7.0/10

Years Exp

Java Collection Framework Advanced

7.0/10

Years Exp

JPA Advanced

7.0/10

Years Exp

Hibernate Advanced

7.0/10

Years Exp

JavaScript Advanced

7.0/10

Years Exp

Spring Data JPA Advanced

7.0/10

Years Exp

Spring MVC Advanced

7.0/10

Years Exp

Spring Security Advanced

7.0/10

Years Exp

Spring AOP Advanced

6.5/10

Years Exp

Bitbucket Advanced

6.5/10

Years Exp

Typescript Advanced

6.5/10

Years Exp

Docker Advanced

6.5/10

Years Exp

System Design Advanced

6.5/10

Years Exp

Java 17 Advanced

6.5/10

Years Exp

Java 8 Advanced

6.5/10

Years Exp

Performance Optimization Advanced

6.5/10

Years Exp

MongoDb Advanced

6.5/10

Years Exp

Grafana Advanced

6.5/10

Years Exp

Spring Cloud Advanced

6.5/10

Years Exp

Prometheus Advanced

6.5/10

Years Exp

Elasticsearch Advanced

6.5/10

Years Exp

Hazelcast Advanced

6.5/10

Years Exp

Postman Advanced

6.5/10

Years Exp

Event-Driven Architecture Advanced

6.5/10

Years Exp

Java 11 Advanced

6.5/10

Years Exp

Low-Level Design Advanced

6.0/10

Years Exp

Openapi Advanced

6.0/10

Years Exp

Swagger Advanced

6.0/10

Years Exp

Gradle Advanced

6.0/10

Years Exp

Maven Advanced

6.0/10

Years Exp

Python Advanced

6.0/10

Years Exp

SOLID Advanced

6.0/10

Years Exp

Design Patterns Advanced

6.0/10

Years Exp

JWT Advanced

6.0/10

Years Exp

Async Processing Advanced

6.0/10

Years Exp

Spring Cloud Gateway Advanced

6.0/10

Years Exp

Angular Material Advanced

6.0/10

Years Exp

Lombok Advanced

6.0/10

Years Exp

OAuth2 Advanced

6.0/10

Years Exp

Flyway Intermediate

5.5/10

Years Exp

AWS SNS Intermediate

5.5/10

Years Exp

APM Intermediate

5.5/10

Years Exp

AWS DynamoDB Intermediate

5.5/10

Years Exp

AWS S3 Intermediate

5.5/10

Years Exp

AWS Lambda Intermediate

5.5/10

Years Exp

Kafka Intermediate

5.5/10

Years Exp

AWS SQS Intermediate

5.5/10

Years Exp

RabbitMQ Intermediate

5.5/10

Years Exp

Redis Intermediate

5.5/10

Years Exp

MapStruct Intermediate

5.5/10

Years Exp

Resilience4j Intermediate

5.5/10

Years Exp

Java 21 Intermediate

5.5/10

Years Exp

GitHub Copilot Intermediate

5.0/10

Years Exp

ChatGPT Intermediate

5.0/10

Years Exp

Claude AI Intermediate

5.0/10

Years Exp

Cursor Intermediate

5.0/10

Years Exp

Work Experience

Software Engineer

Enveu

Feb 2023 - Present

Architected 6+ production microservices (Spring Boot + Docker) powering a multi-tenant OTT SaaS platform — enabling 10+ independent client streaming apps to deploy independently with zero downtime, eliminating release bottlenecks across the platform. Reduced API response time from 400ms to under 80ms (5x improvement) by implementing Hazelcast distributed caching on social feature REST APIs (Like, Share, Comment, Follow), cutting DB load by ~35% across high-traffic endpoints. Built end-to-end fullstack features — Spring Boot APIs to Angular UI — for real-time analytics dashboards and dynamic leaderboards processing 20K+ daily engagement events via Elasticsearch and Grafana. Engineered a custom RBAC system via Spring AOP annotations supporting 5+ roles and granular permission scopes across the CMS — reduced admin configuration overhead by 60% and eliminated manual access-control errors for 15+ enterprise clients. Wrote JUnit and integration tests (Mockito) for core API modules, achieving 85%+ code coverage on critical services and reducing production bugs by ~30%. Optimized notification and analytics pipelines using Java multithreading, Collection Framework, and concurrent collections, processing 20K+ daily events with 25% throughput improvement — sustaining performance under peak load without horizontal scaling. Developed Python automation scripts for pipeline monitoring and batch data processing tasks.

Software Developer Intern

Enveu

Aug 2022 - Jan 2023

Designed and developed the Agency Portal fullstack (Java 8, Spring Boot, Hibernate, Angular) enabling content upload from 3+ external sources, reducing manual ingestion time by ~70%. Authored end-to-end API documentation for 30+ endpoints (Swagger/OpenAPI) adopted by 3+ client engineering teams — reduced average developer onboarding time and eliminated repeated clarification cycles during integration. Built automated reports across backend services, improving cross-team API clarity and reducing support overhead for 3+ client engineering teams.