Java Full Stack Developer with 5+ Years Experience

Uma Mahesh Vippalapally Java Full Stack Developer

SC, US +1-980-***-**** *********************@*****.*** LinkedIn PROFILE SUMMARY

• Java Full Stack Developer with 5+ years of experience in designing and delivering production-grade, cloud-native enterprise systems across healthcare and large-scale services organizations.

• Designed and built microservices-based platforms using Java (11/17/21), Spring Boot, and RESTful APIs, supporting high-availability, secure, and scalable business workflows.

• Developed workflow-driven, UI-backed services with Angular and React, tightly integrated with backend services to support real-time user interactions and transactional processing.

• Engineered RESTful APIs consumed by enterprise frontends, enabling member management, clinical workflows, and operational systems with consistent performance under high transaction volumes.

• Implemented event-driven architectures using Kafka, enabling asynchronous communication, improved system resilience, and horizontal scalability in distributed microservices environments.

• Deployed and supported cloud-native applications on AWS (EC2, S3, RDS), applying scalability, fault tolerance, and cost- optimization best practices for live production systems.

• Embedded security-by-design principles, including Spring Security, OAuth2, JWT, and role-based access control, ensuring secure data access and compliance across environments.

• Delivered systems aligned with HIPAA-compliant healthcare standards, integrating HL7/FHIR-based data exchanges while safeguarding PHI in CVS Health production ecosystems.

• Enabled CI/CD-driven delivery pipelines using Jenkins, GitHub, and automated build workflows, accelerating release cycles while maintaining code quality and deployment reliability.

• Actively supported production systems, focusing on performance tuning, observability, defect resolution, and continuous improvement to ensure system stability, scalability, and uptime. TECHNICAL SKILLS

Programming Languages Java (8, 11, 17, 21), Core Java, JavaScript (ES6+), TypeScript, SQL, PL/SQL Frontend Technologies ReactJS, Angular (8/9/10, 16/17), HTML5, CSS3, Bootstrap Backend Frameworks & Libraries Spring Boot, Spring MVC, Spring Security, Spring AOP, Spring Data JPA, Hibernate

(ORM)

Microservices & API Technologies Microservices Architecture, RESTful APIs, JAX-RS, API Gateway (Apigee) Databases & Data Stores Oracle DBMS, MySQL, MongoDB (NoSQL), Redis, Amazon DynamoDB Messaging & Streaming Apache Kafka, Amazon SQS

Cloud & Infrastructure Amazon Web Services (AWS): EC2, S3, EMR Containers & Orchestration Docker, Kubernetes

CI/CD & Build Tools Jenkins (CI/CD Pipelines), Maven, Git, GitHub Developer Tools & IDEs IntelliJ IDEA, Eclipse, VS Code, Postman, JIRA Core Concepts & Competencies Object-Oriented Programming (OOP), Data Structures, Collections Framework, MVC Architecture, Exception Handling, Multithreading & Concurrency Domain Standards & Compliance HL7, FHIR, HIPAA

PROFESSIONAL EXPERIENCE

Java Full Stack Developer CVS Health, USA

Jun 2024 – Present

• Delivered end-to-end SDLC execution for HIPAA-compliant healthcare platforms supporting 500K+ members and 1M+ monthly API transactions across clinical and operational workflows.

• Engineered backend services using Java 17/21 with multithreading and concurrency controls, improving request throughput and reducing thread contention in high-volume clinical workloads.

• Built scalable service layers using Spring Boot and Spring MVC, enabling independent deployments and improving service maintainability across 10+ microservices.

• Implemented Spring Security, OAuth2, JWT, and RBAC, achieving 100% compliance in internal security audits and eliminating unauthorized access incidents.

• Designed persistence layers with Spring Data JPA and Hibernate, supporting Oracle, MySQL, and MongoDB, and optimizing query performance by 25–30% through indexing and fetch tuning.

• Developed RESTful microservices exposed via Apigee API Gateway, supporting secure integrations and handling thousands of daily requests with consistent SLA adherence.

• Built responsive UI components using Angular and React, improving form usability and reducing UI-related defects by

~20% in production releases.

• Deployed cloud-native applications on AWS (EC2, S3, DynamoDB, SQS, EMR) with auto-scaling and fault-tolerance configurations, achieving 99.9% service availability.

• Automated CI/CD pipelines using Jenkins and GitHub, reducing release cycles by 30–35% while maintaining build stability across environments.

• Provided ongoing production support, resolving P1/P2 incidents within SLA and improving system performance, observability, and uptime.

Environment: Java 17/21, Core Java, Multithreading, Spring Boot, Spring MVC, Spring Security, Spring AOP, Spring Data JPA, Hibernate, SQL, Oracle Database, Microservices Architecture, RESTful Web Services, Apigee, ReactJS, Angular 16/17, HTML5, CSS3, JavaScript, Bootstrap, Kafka, Docker, Kubernetes, AWS (EC2, S3, DynamoDB, SQS, EMR), GitHub, Jenkins, MySQL, MongoDB, Redis, HL7, FHIR, HIPAA

Java Full Stack Developer Cognizant, India

Jul 2019 – Jul 2023

• Participated in all phases of the SDLC, including requirement analysis, technical design, development, integration testing, and production support for banking systems.

• Supported enterprise banking platforms processing millions of financial transactions daily.

• Developed backend logic using Java 8/11 with multithreading and concurrent collections, improving transaction processing efficiency and reducing batch execution time by 20%.

• Built Spring Boot–based services following MVC architecture, supporting retail banking and payments modules used by 100K+ active users.

• Implemented Spring Security and JWT-based authentication, enforcing role-based access controls and meeting internal banking security and audit standards.

• Designed data access layers using Spring Data JPA and Hibernate with Oracle and MySQL, optimizing complex SQL and PL/SQL queries to reduce database latency by 25%.

• Developed and optimized stored procedures, triggers, cursors, and indexes, improving reporting and transaction consistency in high-volume systems.

• Implemented microservices-based architecture separating core banking and payments domains, improving scalability and reducing cross-module dependencies.

• Developed RESTful services using Spring Boot and JAX-RS, supporting real-time integrations with internal and third-party banking systems.

• Built responsive UI components using Angular and React, accelerating feature delivery and reducing UI change effort by

~30%.

• Deployed Dockerized applications on AWS EC2, supporting cloud migration initiatives and improving environment consistency across dev, QA, and prod.

• Supported CI/CD pipelines using Jenkins and GitHub, enabling automated builds and deployments and reducing manual release errors.

Environment: Java 8/11, Core Java, Multithreading, Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, SQL, PL/SQL, Oracle DBMS, Microservices Architecture, RESTful Web Services, JAX-RS, ReactJS, Angular 8/9/10, HTML5, CSS3, JavaScript, Bootstrap, Kafka, Docker, Kubernetes, AWS (EC2), GitHub, Jenkins, MySQL, MongoDB, Redis EDUCATION & CERTIFICATION

M.S. in Computer Science from Texas A&M University – Corpus Christi B.Tech. in Computer Science and Engineering from Lovely Professional University, Phagwara, India Certifications:

Java Full Stack Developer Certification

Microservices with Spring Boot and Spring Cloud

Ultimate AWS Certified Cloud Practitioner

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