Java Full Stack Developer with 3+ Years Experience

Guna Khambhammettu

Java Full Stack Developer

Kearny, NJ • 201-***-**** • *********@*****.*** • LinkedIn • GitHub Professional Summary

Java Full Stack Developer with 3+ years of experience building scalable, secure enterprise applications across banking and healthcare domains. Specialized in Spring Boot microservices, distributed systems, and cloud-native architectures supporting high-volume, mission-critical platforms.

Proven ability to modernize legacy systems, optimize performance, and deliver compliance-driven solutions within Agile environments.

Technical Skills

Languages: Java 17/11, JavaScript, TypeScript, SQL

Frameworks: Spring Boot, Spring Security, Spring Data JPA, Hibernate, Angular, React

Architecture: Microservices Architecture, RESTful APIs, Distributed Systems

Cloud/DevOps: Docker, Kubernetes, AWS, Azure, Jenkins, Git, Apache Kafka

Databases: Oracle, PostgreSQL, MongoDB

Security: OAuth2, JWT, TLS/SSL

Testing/Tools: JUnit, Mockito, SonarQube, ELK Stack

Standards: FHIR, HL7, ISO 20022

Professional Experience

Java Full Stack Developer

Citigroup — Texas, USA

Enterprise banking modernization initiative supporting high-volume transaction systems Aug 2024 – Present

Engineered Spring Boot microservices supporting high-volume banking transactions, improving system scalability and reliability.

Designed and secured REST APIs with Spring Security and OAuth2, reducing unauthorized access risks and improving compliance posture.

Developed React-based banking interfaces that streamlined customer onboarding and improved usability.

Optimized database performance with Hibernate and Oracle tuning, reducing transaction response times by 25%.

Implemented Kafka-based event streaming pipelines to enable reliable, real-time transaction processing across distributed services.

Integrated financial messaging standards to enable secure, compliant interbank data exchange.

Containerized microservices with Docker and deployed to AWS cloud infrastructure, improving release efficiency and scalability.

Automated CI/CD pipelines with Jenkins, reducing release errors and accelerating deployment cycles.

Delivered analytics dashboards improving operational monitoring and financial reporting visibility.

Supported high-availability transaction systems processing thousands of daily financial operations.

Reduced API response latency by 18% through query optimization and efficient service-layer design. Java Full Stack Developer

HCL Technologies — India

Healthcare platform modernization and interoperability program Sept 2021 – July 2023

Developed healthcare microservices using Java and Spring frameworks to consolidate enterprise patient data systems.

Built secure SOAP and REST integrations enabling seamless clinical data exchange across hospital platforms.

Implemented interoperability services using healthcare data standards to improve record accuracy and system consistency.

Designed Angular-based dashboards that improved physician access to clinical records and workflow efficiency.

Engineered large-scale batch processing pipelines to migrate millions of legacy records into unified repositories.

Applied gateway and resilience patterns to maintain high service availability.

Enforced encryption and secure communication protocols to protect sensitive healthcare information.

Deployed containerized applications to Kubernetes clusters, improving scalability and operational consistency.

Enhanced insurance claims workflows through standardized healthcare transaction processing.

Delivered analytics integrations supporting operational visibility and data-driven healthcare decisions. Certifications

Full Stack Web Development – Udemy

Java Data Structures and Algorithms – Udemy

Education

Master of Science in Computer Science

New Jersey Institute of Technology — USA (Sept 2023 – Dec 2024) Bachelor of Science in Computer Science

Geethanjali College of Engineering and Technology (Aug 2019 – May 2023)

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