Senior Full-Stack Java Developer with Healthcare Expertise

Full Stack Java Developer

Krishna Babu

EMAIL: ***********.***@*****.***

CONTACT: +1-571-***-****

LINKEDIN: http://www.linkedin.com/in/krishnakamasani

PROFESSIONAL SUMMERY:

Over 5+ years of full-stack development experience in Java/J2EE, Spring Boot, and enterprise web applications.

Extensive experience in Healthcare IT (payer and provider systems), including claims processing, member enrolment, and Telehealth platforms.

Proven expertise in microservices architecture, designing scalable, maintainable, and high-performance applications.

Strong RESTful and SOAP API development skills, integrating third-party services and external systems.

Hands-on experience in database design and optimization with MySQL, Oracle, and MongoDB, including Hibernate/JPA integration.

Developed secure applications with HIPAA compliance, RBAC, and encryption for healthcare data.

Frontend development expertise using React.js, React Hooks, TypeScript, and Angular, creating responsive and role-specific dashboards.

Experience with CRM and Order Management systems, including workflow management, notifications, and payment integration.

Skilled in unit and integration testing with JUnit, Mockito, Selenium, and Protractor to ensure high-quality deliverables.

Experienced in Agile/Scrum methodologies, collaborating with business analysts, QA, and DevOps teams.

Strong CI/CD and cloud deployment skills, with experience deploying applications on AWS and Azure using Jenkins pipelines.

Mentored junior developers, conducted code reviews, and contributed to architecture and design decisions for enterprise-grade applications.

TECHNICAL SKILLS:

Programming Languages: Java, Core Java, J2EE, TypeScript, JavaScript

Backend / Frameworks: Spring Boot, Spring MVC, Hibernate/JPA, Spring REST, Microservices Architecture

Frontend: React.js, React Hooks, AngularJS, Angular 5+, HTML5, CSS3

Databases: MySQL, Oracle, MongoDB, Firebase Realtime Database

Web Services / API: RESTful APIs, SOAP APIs, JSON, XML

Testing / QA: JUnit, Mockito, Selenium, Protractor, UAT

DevOps / Cloud: Jenkins CI/CD, AWS, Azure, Docker (if applicable)

Design / Architecture: SOLID principles, Design Patterns (Factory, Singleton, Strategy), RBAC Security

Tools / Version Control: Git, GitHub, Jira, Agile/Scrum

PROFESSIONAL EXPERIENCE:

Cigna Healthcare – Bloomfield, CT USA Mar 2025 - Present

Sr. Java Developer

Responsibilities:

Designed and maintained Java/J2EE applications supporting claims processing, member enrollment, and provider management.

Developed Spring Boot RESTful microservices for eligibility checks, claims workflows, and policy management.

Implemented scalable microservices architecture to improve system performance and maintainability.

Developed secure business logic using Core Java, Spring, and Hibernate/JPA for healthcare data processing.

Integrated systems with SOAP/REST APIs, handling JSON/XML data formats.

Managed database operations in Oracle/MySQL, including optimized queries and transaction management.

Ensured HIPAA compliance via RBAC, encryption, and secure data handling.

Performed unit and integration testing using JUnit and Mockito.

Collaborated in an Agile/Scrum environment and supported AWS deployments via CI/CD pipelines.

Grey Global – Sterling, VA USA Aug 2024 – Mar 2025

Full Stack Java Developer

Responsibilities:

Led full-stack development for scalable enterprise web applications, focusing on backend services, responsive UI, and security.

Built backend services using Core Java and Spring Boot, applying SOLID principles and design patterns.

Designed and optimized MySQL databases, integrating Hibernate ORM for efficient persistence.

Developed high-performance RESTful APIs and integrated third-party enterprise services.

Modernized frontend architecture using React Hooks, improving component reusability and performance.

Conducted code reviews, mentored junior developers, and contributed to architectural decisions.

Macronix – Bengaluru, INDIA Jun 2020 – Jul 2023

Full Stack Developer

Responsibilities:

Engineered a Telehealth Management Portal supporting telemedicine, patient records, and real-time communication.

Developed Spring Boot microservices for patient profiles, appointments, e-prescriptions, and consultation summaries.

Built responsive UIs using React.js and TypeScript with role-based dashboards.

Integrated Firebase Realtime Database for secure chat and MongoDB for healthcare data storage.

Automated deployments using Jenkins CI/CD on AWS and Azure.

Implemented RBAC to ensure application security and compliance.

Bubble Script – Bengaluru, INDIA May 2019 – Jun 2020

Full Stack Developer (Java Angular React)

Responsibilities:

Developed and optimized a CRM & Order Management Platform supporting business workflows and real-time order tracking.

Built Java Spring Boot microservices for notifications, workflows, and order tracking.

Migrated UI from AngularJS to Angular 5 and React.js, improving responsiveness and maintainability.

Integrated REST APIs with payment gateways and notification services.

Optimized MySQL performance and supported automated testing (JUnit, Selenium, Protractor) and UAT.

EDUCATIONAL DETAILS:

Masters in Computer Science from Youngstown State University – 2024

Bachelors in Electronics & Communication Engineer from Priyadharshini institute of technology - 2015

CERTIFICATIONS:

AWS Certified Developer – Associate:2024

Oracle Certified Professional: Java SE 11 Developer:2019

Microsoft Certified: Azure Developer Associate:2025

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