Full Stack Java Engineer - Cloud-Native Microservices Expert

Harsha B

Full Stack Java Developer Virginia, USA

***********@*****.*** 804-***-**** https://www.linkedin.com/in/harsha-b-214a60208/

PROFESSIONAL SUMMARY

Full Stack Java Engineer with 5+ years of experience designing and delivering scalable, cloud-native, microservices-based enterprise applications in Healthcare and FinTech domains. Strong expertise in Java 17, Spring Boot 3.x, Angular 15+, event-driven architecture, and AWS cloud infrastructure. Proven track record of improving application performance by up to 40%, designing distributed systems handling 500K+ daily transactions, and implementing CI/CD automation for zero-downtime deployments. Experienced in secure API development, system optimization, and production support in Agile environments.

TECHNICAL SKILLS

Programming: Java 8/11/17, JavaScript (ES6+), TypeScript, SQL

Backend: Spring Boot, Spring MVC, Spring Security, Hibernate, JPA, Microservices Architecture, RESTful APIs, OpenAPI 3.0, Resilience4j, JWT, OAuth 2.0

Frontend: Angular 12–15+, RxJS, NgRx, HTML5, CSS3, Bootstrap

Databases: PostgreSQL, MySQL, Oracle, MongoDB

Messaging & Caching: Apache Kafka, Redis

Cloud & DevOps: AWS (EC2, S3, RDS, IAM, CloudWatch, Auto Scaling), Docker, Kubernetes, Jenkins, CI/CD, Terraform (basic)

Testing & Quality: JUnit 5, Mockito, Integration Testing, SonarQube

Tools: Git, Maven, IntelliJ, VS Code, Postman, Swagger, JIRA

Methodologies: Agile/Scrum, TDD, SOLID Principles, Design Patterns

PROFESSIONAL EXPERIENCE

Full Stack Java Developer Ascension Health, Remote May 2024 – Present

Responsibilities:

Designed and deployed 12+ Spring Boot 3.x microservices using Java 17 supporting 500K+ patient transactions daily.

Implemented secure REST APIs with OAuth 2.0 and JWT authentication, ensuring HIPAA-compliant data access.

Improved API response time by 35% by introducing Redis-based caching and query optimization strategies.

Implemented circuit breaker patterns using Resilience4j to enhance fault tolerance and reduce system downtime by 25%.

Developed dynamic Angular 15+ UI modules with RxJS and reactive forms, improving page load performance by 30%.

Integrated Kafka for asynchronous communication between services, enabling event-driven processing.

Containerized applications using Docker and deployed to AWS with Auto Scaling and load balancing.

Built CI/CD pipelines using Jenkins, enabling automated testing and zero-downtime deployments.

Achieved 85%+ unit test coverage using JUnit 5 and Mockito, monitored code quality using SonarQube.

Participated in system design discussions, sprint planning, and architecture reviews.

Environment: Java 17, Spring Boot 3.x, Angular 15+, Kafka, Redis, AWS, Docker, Kubernetes, PostgreSQL, MongoDB, Jenkins.

Software / Java Developer Wipro Limited, India Sep 2021 – July 2023

Responsibilities:

Developed scalable backend services using Spring Boot 2.x and Java 11 supporting enterprise transaction processing modules.

Designed REST APIs consumed by Angular 12 frontend, serving 100K+ active users.

Optimized SQL queries and indexing strategies in MySQL, improving reporting performance by 40%.

Implemented RBAC using Spring Security to enforce application-level authorization controls.

Developed reusable Angular components and state management using RxJS, reducing UI code redundancy by 25%.

Integrated third-party APIs and implemented robust exception handling and global error management.

Used Docker for containerization and supported deployment pipelines via Jenkins.

Performed integration testing and production defect resolution, maintaining 99.5% system uptime.

Environment: Java 11, Spring Boot 2.x, Angular 12, Hibernate, MySQL 8, Docker, Jenkins, Git, Linux.

Java Developer Paytm, India July 2020 – August 2021

Responsibilities:

Developed backend payment processing modules using Java 8 and Spring MVC handling high-volume financial transactions.

Designed RESTful services supporting secure payment gateway integrations.

Implemented transaction validation and idempotency mechanisms to ensure data consistency.

Optimized Oracle DB queries and indexing strategies for faster transaction reconciliation.

Assisted in migration from monolithic architecture to Spring Boot microservices model.

Wrote unit test cases using JUnit and participated in peer code reviews.

Collaborated with QA and DevOps teams during production releases and hotfix deployments.

Environment: Java 8, Spring MVC, Hibernate, Oracle DB, REST APIs, JUnit, Git.

EDUCATION & CERTIFICATIONS

Master of Science in Information Systems – DePaul University, USA – June 2025

Bachelor of Science in Information Technology – MVGR College of Engineering, India – June 2021

Machine Learning – Udemy 2021

AngularJS – Brainovision 2021

Web Development – Udemy 2 2021

SQL – Udemy 2022

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