Senior Java Backend Engineer with Spring Microservices

Shiva Kumar Ganduru

Email: ************@*****.***

Phone: +1-309-***-****

Linkedin: www.linkedin.com/in/gsk1999

PROFESSIONAL SUMMARY:

Senior Java Backend Engineer with 5+ years of experience building scalable enterprise applications across insurance, healthcare, and retail domains. Strong expertise in Java, Spring Boot microservices, secure REST APIs, and real-time, data-driven systems. Hands-on with React and Angular for end-to-end delivery, relational and NoSQL databases, and cloud-native deployments using AWS, Docker, Kubernetes, and CI/CD pipelines. Proven team contributor in Agile environments, focused on performance, security, and production stability. TECHNICAL SKILLS:

● Programming Languages: Java, Python, JavaScript (ES6+), TypeScript, SQL.

● Backend & Application Frameworks: Spring Boot, Spring MVC, Spring WebFlux, Spring Data JPA, Hibernate, Microservices Architecture, RESTful APIs, GraphQL, Spring Security, JWT, OAuth2, Node.js, Express.js.

● Frontend Technologies: React.js, Redux, Angular, AngularJS, HTML5, CSS3, Bootstrap, Material UI.

● Databases & Data Stores: MySQL, PostgreSQL, Oracle, SQL Server, MongoDB, Cassandra, Redis

● Messaging, Streaming & Integration: Apache Kafka, JMS, Event-Driven Architecture, API Gateway Integration, Service-to-Service Communication, Asynchronous Processing.

● Cloud & DevOps: AWS (EC2, S3, IAM, CloudWatch), Azure, Docker, Kubernetes, OpenShift, Jenkins, GitHub Actions, CI/CD Pipelines, Infrastructure as Code (IaC).

● Testing & Quality Engineering: JUnit, Mockito, Jest, Cypress, Selenium, Postman, Supertest, API Testing, Integration Testing, Automation Testing.

● Architecture & System Design: Microservices Design, Distributed Systems, Scalable Architecture, Secure API Design, Cloud-Native Architecture, Fault Tolerance, High Availability, Performance Optimization

● Development Tools & Platforms: Git, GitHub, Bitbucket, Maven, Gradle, IntelliJ IDEA, Eclipse, VS Code, Postman, SoapUI.

● Methodologies & Practices: Agile/Scrum, SDLC, DevOps, CI/CD, Agile Delivery Models, Test-Driven Development (TDD), Clean Code Practices.

● Domain Expertise: Insurance Systems, Financial Services Platforms, Healthcare Systems, Digital Health Platforms, Retail & Restaurant Systems, Enterprise Applications.

● Professional Skills: System Design Thinking, Problem Solving, Performance Engineering, Technical Documentation, Cross-Team Collaboration, Agile Leadership, Mentoring, Client-Facing Communication.

PROFESSIONAL EXPERIENCE:

Client: Experian - Enterprise Insurance & Financial Platform Sept 2023 - Present Role: Senior Software Engineer

Key Responsibilities & Achievements:

● Designed and developed 20+ Spring Boot microservices for an enterprise insurance claims and service-agent platform supporting 1,000+ internal users handling customer servicing and claim operations.

● Built secure REST and GraphQL APIs processing 100K+ insurance transactions per day, enabling real-time claim intake, validation, policy lookups, and claim status updates.

● Improved API response times by ~30% by optimizing MySQL queries, implementing indexing strategies, and reducing inter-service latency.

● Developed React-based agent dashboards that reduced manual claim processing effort by ~25%, improving agent productivity and turnaround time.

● Implemented JWT-based authentication and role-based access control using Spring Security to safeguard millions of customer and policy records.

● Integrated legacy insurance systems and third-party services through standardized APIs, reducing data discrepancies and reprocessing issues by ~20%.

● Developed Node.js middleware services for API orchestration and data transformation, supporting real-time communication between distributed systems.

● Containerized services using Docker and deployed on AWS, enabling zero-downtime releases and improved deployment consistency.

● Automated CI/CD pipelines using Jenkins and GitHub Actions, increasing deployment frequency by

~40% and reducing release failures.

● Built unit and integration test suites with 85%+ code coverage, reducing post-release defects and production incidents.

● Provided production support during peak claim periods, ensuring system stability and meeting SLA requirements.

Environment: Java 11, Spring Boot, Spring MVC, Spring Security, REST APIs, GraphQL, Microservices, React.js, Redux, Angular, JavaScript (ES6+), HTML5, CSS3, Node.js, MySQL, Docker, AWS (EC2, S3), Jenkins, GitHub Actions, JUnit, Mockito, Jest, Supertest, Git, Agile/Scrum Client: Johnson & Johnson - Global Digital Health Platform Feb 2023 - Sept 2023 Role: Software Engineer

Key Responsibilities & Achievements:

● Developed and maintained 15+ microservices supporting a global digital health platform used by thousands of internal healthcare and operations users.

● Designed RESTful APIs handling 50K+ daily requests, enabling secure data exchange between digital health applications and backend systems.

● Improved platform scalability by ~35% by implementing reactive, non-blocking services using Spring WebFlux.

● Implemented OAuth2 and JWT-based security mechanisms to protect sensitive healthcare data and ensure secure user authentication.

● Designed and optimized PostgreSQL and MongoDB data models managing millions of healthcare and operational records.

● Implemented Apache Kafka for asynchronous messaging, reducing synchronous dependencies and improving data processing throughput by ~25%.

● Built React-based dashboards for internal teams to monitor application health, service metrics, and operational KPIs.

● Deployed containerized services on Kubernetes/OpenShift, achieving 99.9% application uptime across environments.

● Automated build and deployment pipelines using Jenkins and Maven, reducing manual deployment effort by ~40%.

● Developed unit and integration tests maintaining 80%+ code coverage, improving release stability and reducing regression defects.

● Collaborated with cross-functional Agile teams to deliver compliant and scalable healthcare solutions. Environment: Java 11, Spring Boot, Spring WebFlux, Spring MVC, Spring Security, REST APIs, OAuth2, JWT, React.js, Redux, Angular, JavaScript (ES6+), TypeScript, HTML5, CSS3, Apache Kafka, PostgreSQL, MongoDB, Docker, Kubernetes, OpenShift, Jenkins, Maven, JUnit, Mockito, Git, Agile/Scrum Client: Inspire Brands - Enterprise Retail Systems Sept 2020 - Nov 2022 Role: Java Developer

Key Responsibilities & Achievements:

● Developed backend services supporting restaurant operations, payroll, and digital ordering systems across hundreds of restaurant locations.

● Built RESTful APIs processing tens of thousands of daily transactions related to employee management, payroll processing, and order workflows.

● Developed and enhanced Angular and React user interfaces used by store managers and corporate teams for daily operational activities.

● Migrated legacy JavaScript and jQuery modules to React, improving page load performance by ~30% and reducing maintenance overhead.

● Implemented microservices architecture to improve scalability and system stability during peak business hours and seasonal traffic spikes.

● Optimized MySQL and Oracle database queries, reducing reporting and batch job execution time by

~35%.

● Integrated Node.js services with Java microservices for background processing, reporting, and data synchronization.

● Automated scheduled jobs and batch workflows, reducing manual payroll processing effort by ~25%.

● Supported CI/CD pipelines using Jenkins and Git, enabling faster and more reliable releases.

● Developed unit tests to improve code quality and reduce production issues.

● Worked closely with QA and business teams in Agile sprints to deliver features aligned with operational timelines.

Environment: Java 8, Spring Boot, Spring MVC, Hibernate, REST APIs, Microservices, React.js, Angular, JavaScript, HTML5, CSS3, Bootstrap, Node.js, MySQL, Oracle, Jenkins, Git, JUnit, Mockito, Agile/Scrum EDUCATION:

● Masters: Computer Science, Western Illinois University, Macomb,IL. Jan 2023 - Dec 2024

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