
Devraj N
Senior Java Full Stack Developer @ Cigna Healthcare
About
Senior Java Full Stack Developer with 11+ years of experience designing and delivering scalable enterprise applications across healthcare, banking, government, and airline industries. I specialize in building distributed systems using Java, Spring Boot, Microservices architecture, and event driven platforms powered by Apache Kafka.My experience includes developing secure RESTful APIs, building modern web applications using React and Angular, and deploying cloud native solutions on AWS and Azure using Docker and Kubernetes. I have worked extensively on high volume enterprise platforms where performance, security, and reliability are critical.I have strong experience designing microservices based architectures, implementing CI/CD pipelines, integrating third party systems, and optimizing application performance through caching, asynchronous processing, and scalable database design.I enjoy solving complex engineering problems and building reliable systems that support large scale digital platforms. I also collaborate closely with architects, product owners, and cross functional teams to translate business requirements into scalable technical solutions.Key SkillsJava, Spring Boot, Microservices, Apache Kafka, React, Angular, REST APIs, AWS, Azure, Docker, Kubernetes, CI/CD, Oracle, PostgreSQL, MongoDB, Redis, Distributed Systems, Cloud Native Applications.
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United States
Computer Software
Vue.js, Jenkins, Docker Products, Amazon Web Services (AWS), AngularJS, JavaScript, Software Development, Front-End Development, React.js, Software Development Life Cycle (SDLC), Apache Kafka, Python (Programming Language), Microservices, Microsoft PowerPoint, SQL, Tableau, Microsoft Office, Microsoft Excel, Full-Stack Development, Mean Stack
Experience

Senior Java Full Stack Developer
United States
Designed and developed scalable healthcare applications using Java, Spring Boot, and microservices architecture to support critical insurance workflows such as claims processing, member eligibility verification, and policy management. Built secure RESTful APIs to enable seamless integration between internal systems, provider platforms, and third party healthcare services. Implemented event driven architecture using Apache Kafka to support asynchronous communication and real time processing of healthcare transactions. Developed responsive web applications using React, TypeScript, HTML5, and modern UI frameworks to support provider portals and internal dashboards. Deployed cloud ready microservices using Docker and Kubernetes and supported application environments across AWS and Azure platforms. Worked closely with architects, business analysts, and healthcare domain experts to translate complex business requirements into scalable enterprise solutions while following Agile development practices.

Senior Java Developer
Worked on enterprise banking platforms developing secure and scalable backend services using Java, Spring Boot, and microservices architecture. Built RESTful APIs supporting core banking operations such as account management, payment processing, customer onboarding, and transaction services. Implemented event driven communication using Apache Kafka to handle financial transaction events and enable reliable data exchange between distributed services. Developed internal operational dashboards and user interfaces using Angular to support banking workflows and monitoring tools. Implemented authentication and authorization using Spring Security, OAuth2, and JWT ensuring compliance with banking security standards. Deployed services on AWS infrastructure and implemented CI/CD pipelines using Jenkins, Maven, and Git to automate application builds and deployments. Collaborated with cross functional teams including product owners, QA engineers, and compliance teams to deliver secure and reliable financial systems.

Senior Java Full Stack Developer
Developed digital banking and lending applications using Java, Spring Boot, Angular, and microservices architecture supporting loan origination, account servicing, and payment processing platforms. Designed and implemented RESTful APIs enabling secure communication between digital banking portals and backend financial systems. Implemented Apache Kafka based event streaming to support asynchronous processing for loan updates, payment notifications, and customer activity events. Built responsive front end components using Angular and modern web technologies improving user experience for customer facing banking applications. Integrated banking systems with credit bureaus, payment gateways, and third party financial services. Containerized services using Docker and supported cloud deployments on AWS infrastructure. Collaborated with product teams and architects to design scalable distributed systems capable of handling high transaction volumes.

Java Full Stack Developer
United States
Developed enterprise government applications supporting citizen service platforms and administrative workflows using Java, Spring MVC, JSP, and Hibernate. Built backend modules for citizen service requests, eligibility processing, document management, and public sector data management systems. Developed RESTful services to enable integration between state agency platforms and external public sector systems. Built user interfaces using JavaScript, HTML5, CSS3, and Bootstrap to improve accessibility and usability of government portals. Optimized database queries and stored procedures using Oracle and SQL Server to support high volume public records processing. Worked closely with government stakeholders and technical teams to modernize legacy systems and improve the reliability and maintainability of public sector applications.

Java Full Stack Developer
Worked on airline reservation and booking platforms developing backend services using Java, Spring Framework, and Hibernate to support flight search, booking management, passenger information processing, and ticket reservation workflows. Built RESTful APIs to integrate reservation systems with payment gateways and third party travel services. Developed front end modules using JavaScript, HTML, CSS, jQuery, and JSP to support online booking and customer service portals. Implemented backend business logic for seat selection, pricing calculation, reservation validation, and booking management systems. Optimized database interactions using Oracle and MySQL ensuring efficient handling of reservation data and passenger records. Collaborated with airline business teams and engineering teams to deliver reliable digital booking experiences.
Devraj N's Contact Information
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