Java Full Stack Developer (Insurance/Banking)

MEHATHA BANU SHAIK

Java Full Stack Developer *+ Years of Experience

312-***-**** • *************@*****.*** • Insurance Healthcare Banking

PROFESSIONAL SUMMARY

Java Full Stack Developer with 5+ years of experience architecting and delivering enterprise-grade, cloud-native applications across Insurance, Healthcare, and Banking domains. Deep expertise in Java 8/11/17, Spring Boot, Microservices Architecture, and RESTful APIs, with a strong track record in event-driven systems (Apache Kafka), HIPAA-compliant healthcare integrations (HL7/FHIR), and high-volume core banking solutions. Proficient in AWS (EC2, S3, Lambda, RDS), Docker, Kubernetes, and CI/CD pipelines, consistently reducing deployment cycles and improving system performance. Committed to OAuth2/JWT security, regulatory compliance, and Agile/Scrum delivery.

TECHNICAL SKILLS

Programming Languages & Core Concepts

Java (8 / 11 / 17), Object-Oriented Design Principles (OOP), SOLID Principles, Clean Code Principles, Design Patterns, Relational Database Concepts, Performance Tuning

Backend Frameworks & Architecture

Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, Microservices, Distributed Systems, Event-Driven Architecture

Frontend Technologies

React, React.js, Angular, JavaScript (ES6+), HTML5, CSS3, Responsive UI Design

APIs & Integration

RESTful Web Services, GraphQL, OAuth2, JWT, API Gateway, HL7/FHIR, Third-Party Integrations

Messaging & Streaming

Apache Kafka, RabbitMQ, JMS

Databases & Caching

Oracle, MySQL, PostgreSQL, Amazon DynamoDB, Redis (Caching)

Cloud Platforms

AWS (EC2, S3, RDS, Lambda, CloudWatch), Google Cloud Platform (GCP), Microsoft Azure

DevOps & Containerization

Docker, Kubernetes, Jenkins, GitHub Actions, CI/CD, Containerization

Testing & Quality Engineering

JUnit 5, Mockito, Automated Testing, Postman, Swagger/OpenAPI

Monitoring & Observability

Logging and Monitoring Tools, CloudWatch

Development Practices & Collaboration

AI-Assisted Development Tools, Code Reviews, Agile/Scrum, JIRA, Git

Tools & Version Control

Git, GitHub Actions, Postman, JIRA, Swagger/OpenAPI

PROFESSIONAL EXPERIENCE

Liberty Mutual Insurance Java Full Stack Developer Oct 2025 – Present

Designed and developed scalable microservices using Java 11, Spring Boot, and REST APIs to support policy administration and claims processing systems, handling millions of transactions with high availability.

Built secure APIs for underwriting workflows, policy lifecycle management, and premium calculation engines, reducing manual processing effort by over 40%.

Integrated with third-party vendors for claims adjudication, risk assessment, and fraud detection using standardized insurance domain protocols.

Improved system performance by 30% through query optimization, Redis caching, and asynchronous processing strategies.

Implemented event-driven architecture using Apache Kafka for real-time claims status updates and policy notifications across distributed services.

Ensured compliance with insurance regulatory standards; implemented OAuth2, JWT authentication, and AES data encryption for PII protection.

Deployed applications on AWS (EC2, S3, RDS, Lambda) with autoscaling groups and monitoring dashboards via CloudWatch for proactive incident management.

Led peer code reviews and promoted clean code principles and object-oriented design principles across microservices teams, improving maintainability, reducing technical debt, and accelerating delivery of production-ready insurance applications.

Implemented automated testing strategies and AI-assisted development tools for test generation and refactoring, while enhancing logging and monitoring tools for faster root-cause analysis and improved production stability.

Built and maintained CI/CD pipelines using Jenkins, Docker, and Kubernetes, improving release efficiency by 40% and reducing rollback incidents.

UnitedHealth Group Java Full Stack Developer Oct 2024 – Aug 2025

•Architected and delivered scalable microservices using Java 11/17, Spring Boot, and REST APIs for claims processing and member services platforms serving 2M+ members.

•Built HIPAA-compliant healthcare APIs integrating with EHR/EMR systems using HL7 v2/FHIR R4 standards for interoperability with hospital networks and payers.

•Improved system throughput by 35% through Redis caching, database query optimization, connection pooling, and asynchronous processing with Spring's async executor.

•Implemented event-driven architecture using Apache Kafka topics and consumer groups for real-time claim status updates, beneficiary notifications, and audit event streaming.

•Enforced HIPAA compliance by implementing OAuth2 / OpenID Connect, JWT-based authentication, role-based access control (RBAC), and field-level encryption on PHI data.

•Deployed and monitored applications on AWS (EC2, S3, RDS, Lambda) with Kubernetes orchestration and observability through CloudWatch metrics and ELK Stack logging.

•Engineered CI/CD pipelines using Jenkins, Docker, and Kubernetes, cutting deployment cycle time by 50% and enabling zero-downtime blue-green deployments.

•Designed healthcare platform enhancements leveraging strong relational database concepts, performance tuning, and containerization best practices, improving application scalability and transaction processing efficiency in HIPAA-compliant environments.

• Collaborated with front-end teams supporting React-based user experiences and evaluated deployments across Microsoft Azure and GCP environments, ensuring consistent integration patterns, operational reliability, and enterprise architecture alignment.

Wells Fargo (via Cognizant) Java Full Stack Developer Jan 2022 – Jul 2023

Developed and maintained Spring Boot microservices and REST APIs for core banking workflows including fund transfers, account services, and reconciliation — designed for secure, scalable, high-availability operation.

Built responsive React.js UI components with state management, improving user engagement by 30% and reducing page load time by 25% through lazy loading and code splitting.

Implemented OAuth 2.0 / JWT-based authentication and API Gateway policies, ensuring secure access control for internal systems and third-party integrations.

Leveraged AWS (Lambda, S3, DynamoDB) to build serverless event-processing components, reducing infrastructure overhead and improving elasticity during peak transaction loads.

Integrated Apache Kafka and JMS messaging for reliable, asynchronous processing of high-volume financial transactions, achieving 99.9% message delivery reliability.

Optimized SQL queries, indexing strategies, and execution plans, improving database performance by 20–30% on critical banking data pipelines.

Axis Bank Java Developer Mar 2020 – Dec 2021

•Developed Spring Boot-based microservices and RESTful APIs for retail banking functions including customer onboarding, transaction processing, and account management.

•Built and enhanced services supporting KYC verification, payments processing, and loan lifecycle management, following core banking domain standards.

•Implemented role-based access control (RBAC), input validation, and session security to meet internal and regulatory security baselines.

•Performed SQL query optimization and wrote stored procedures for financial data reporting and audit trails across banking systems.

•Collaborated with QA teams using JUnit and Mockito for unit and integration testing; maintained defect resolution SLAs in Agile/Scrum sprints.

•Used Git, JIRA, and Confluence for version control, sprint tracking, and technical documentation.

EDUCATION

Master of Science in Information Technology 2023 – 2025

University of the Cumberlands, USA

KEY ACHIEVEMENTS

•40% faster release cycles — Engineered CI/CD pipelines at Liberty Mutual using Jenkins, Docker & Kubernetes.

•50% reduction in deployment time — Automated blue-green deployments at UnitedHealth Group using containerized microservices.

•35% throughput improvement — Optimized Redis caching and async processing for healthcare claims systems.

•HIPAA & OAuth2 compliance — Implemented end-to-end PHI data protection, JWT authentication, and RBAC across healthcare platforms.

•25% faster UI load times — Delivered optimized React.js front-end with lazy loading and code splitting at Wells Fargo.

•HL7/FHIR interoperability — Built standards-compliant EHR/EMR integration layer supporting real-time clinical data exchange.

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