Senior Java Full-Stack Engineer (6+ yrs) in Enterprise Apps

PROFESSIONAL SUMMARY:

Java Full Stack Developer with 6+ years of experience in designing, developing and deploying scalable, secure and high- performance enterprise applications across diverse industries including Healthcare, Insurance and E-commerce.

Expert in architecting microservices with Spring Boot, Spring Cloud & Spring WebFlux, building robust RESTful and GraphQL APIs & optimizing database interactions with PostgreSQL, Oracle 19c, MySQL, MongoDB and Redis.

Proficient in crafting dynamic, responsive user interfaces using React.js, Redux Toolkit, TypeScript, Angular, Material- UI, Tailwind CSS, Bootstrap and Thymeleaf.

Drives critical data interoperability through expertise in HL7 v2.x, FHIR and EDI (X12, 270/271, 837/835), leveraging Apache Camel, Mirth Connect and Apache Kafka for real-time event-driven processing.

Adept at implementing end-to-end security controls including RBAC, JWT-based SSO, TLS 1.3 encryption, OAuth 2.0, OpenID Connect and Active Directory/LDAP role synchronization, ensuring compliance with HIPAA and IRDAI data protection standards.

Skilled in establishing robust CI/CD pipelines with Jenkins, GitHub Actions and Docker, deploying on Azure Kubernetes Service (AKS) and AWS EC2 and leveraging comprehensive observability tools like Prometheus, Grafana, ELK Stack

(Elasticsearch, Logstash, Kibana) and Splunk to ensure continuous availability and proactive performance management.

Utilizes Maven, Gradle, JUnit, Mockito, Chart.js and Camunda BPMN to deliver high-quality, audit-ready solutions within Agile methodologies.

TECHNICAL SKILLS:

Frontend Technologies: React.js, Redux Toolkit, Angular, TypeScript, JavaScript (ES6+), HTML5, CSS3, Bootstrap 5, Tailwind CSS, Material-UI, Chart.js, Thymeleaf, AJAX Backend Technologies: Java 17, Java 21 (LTS), Spring Boot 3.x, Spring Cloud, Spring WebFlux, Spring MVC, Spring Batch, Hibernate, JPA, Java DSL, Camunda BPMN

API Development: RESTful APIs, GraphQL, OpenAPI 3.0, Swagger, EDI 270/271/837/835 integration, Apache Camel, Mirth Connect

Security: Spring Security, OAuth 2.0, JWT, RBAC, Active Directory/LDAP, OpenID Connect, TLS 1.3, HIPAA compliance

Cloud & Containerization: Azure Kubernetes Service (AKS), AWS EC2, Docker, Kubernetes Databases: PostgreSQL, Oracle 19c, MySQL, MongoDB, Redis Messaging & Streaming: Apache Kafka

Build & Dependency Tools: Maven, Gradle

Version Control & CI/CD: Git, GitHub Actions, Jenkins Testing & QA: JUnit, Mockito

Monitoring & Logging: Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana), Splunk Standards & Interoperability: HL7 v2.x, FHIR, ICD-10, CPT, LOINC, SNOMED CT, HIPAA, IRDAI Business Workflow Tools: Camunda BPMN, Jira

PROFESSIONAL EXPERIENCE:

Cigna Healthcare – PA August 2024 – Present

Full Stack Developer

Collaborated with Clinical SMEs and Business Analysts to map and validate ICD-10, CPT, LOINC, SNOMED CT terminologies in the UI layer, ensuring compliance with clinical coding standards and medical billing practices.

Designed and deployed modular Spring Boot 3.x-based microservices to manage electronic patient records (EHR), insurance eligibility and medical claims, incorporating OpenAPI 3.0 specs for API governance and documentation.

Built dynamic, accessible React.js components using Redux Toolkit and TypeScript, delivering responsive healthcare UIs with Material-UI and Tailwind CSS, optimized for ICD-10 and CPT code input.

Streamlined healthcare data interoperability by accurately routing HL7 v2.x & FHIR messages using Apache Camel, Mirth Connect & custom Java DSL processors, ensuring 92% improvement in data exchange fidelity across EMR/EHR systems.

Accelerated patient onboarding workflows by 33% by integrating EDI 270/271 eligibility transactions through GraphQL endpoints and automating payer validation logic within microservice architecture.

Ingested and transformed EDI X12 837 (Claims) and 835 (Remittance) data using Spring Batch and Hibernate, enabling structured persistence and seamless integration into downstream analytics and billing systems.

Engineered scalable PostgreSQL relational schemas for clinical, financial and audit data and configured Redis in-memory caching layer, reducing read-heavy query latency by 41%.

Reduced API response time by 46% through the implementation of asynchronous, non-blocking RESTful APIs using Spring WebFlux, optimizing database interaction with native SQL tuning and reactive PostgreSQL drivers. Vishal

Java Full Stack Developer

Location: Pennsylvania, United States

Ph.: 878-***-****, ***********@*****.***

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Implemented end-to-end HIPAA-compliant security controls, including RBAC using Spring Security, JWT-based SSO, TLS 1.3 encryption and Active Directory/LDAP role synchronization.

Ensured 99.99% service availability SLA for high-volume clinical microservices by deploying on Azure Kubernetes Service (AKS) with auto-scaling, liveness probes and integrated observability via Prometheus, Grafana and ELK Stack. HCLTech – India July 2020 – July 2023

Full Stack Developer

Architected and implemented microservices-based architecture with Spring Boot and Spring Cloud for policy creation, claims processing, underwriting and renewals, adhering to IRDAI regulatory guidelines and ensuring scalability.

Designed and optimized complex data models for insurance policies, claims and customer profiles using Hibernate/JPA with Oracle 19c, improving query performance by 25% through efficient indexing and caching strategies.

Leveraged MongoDB for policy document storage and Redis for caching frequently accessed policy data, reducing database query times by 40% and improving application response times.

Developed and documented RESTful APIs using Spring Web and Swagger/OpenAPI, enabling secure integration with IRDAI external APIs, third-party payment gateways and claims adjudication platforms.

Enhanced application security by implementing Spring Security with JWT, OAuth 2.0 and role-based access control

(RBAC) for customer, agent and admin portals, ensuring compliance with IRDAI data protection standards.

Integrated Apache Kafka for real-time event-driven processing of policy updates, claims notifications and premium calculations, reducing processing latency by 25% and improving system reliability.

Optimized policy issuance processes by 30% through developing automated premium calculation engines using Java 17, Spring Boot and PL/SQL, ensuring seamless integration with IRDAI-compliant policy management systems.

Developed and integrated EDI 837/835 transaction processing for health insurance claims, ensuring compliance with HIPAA and IRDAI standards and streamlining claims reconciliation processes.

Automated policy approval, claims adjudication and renewal workflows using Camunda BPMN, reducing manual intervention by 35% and ensuring audit-ready process trails for regulatory compliance.

Increased customer engagement by 45% by designing intuitive, responsive dashboards using React.js, TypeScript and Chart.js for real-time premium and claims analytics, enhancing user experience for policyholders and agents.

Configured CI/CD pipelines using Jenkins, GitHub Actions and Docker, enabling automated deployments and bi-weekly releases to production with zero downtime for insurance applications.

Implemented centralized logging and monitoring with ELK Stack and Prometheus, reducing error resolution time by 20% and enabling proactive identification of performance bottlenecks in production. Accenture – India May 2018 - June 2020

Full Stack Developer

Developed scalable RESTful microservices using Spring Boot, Spring Cloud & Hibernate ORM to drive core modules such as Order Management, Promotions Engine & Customer Identity Access Management in large-scale e-commerce platforms.

Modularized multi-service application builds through Maven and Gradle, managing dependencies efficiently across a sprawling multi-team project and facilitating seamless integration and timely delivery of feature-rich software products.

Developed and fine-tuned complex SQL queries, JPA/Hibernate mappings and stored procedures for transactional integrity and real-time data analytics on MySQL and Oracle databases handling millions of SKU-level data points.

Integrated MongoDB as a high-performance caching and NoSQL data store for frequently accessed catalog and pricing data, achieving a 25% reduction in database latency & supporting rapid product searches in a microservices architecture.

Implemented robust security frameworks using Spring Security integrated with OAuth2/OpenID Connect protocols, enabling secure multi-factor authentication, role-based access control and session management compliant with data privacy laws pertinent to Indian customers.

Engineered responsive, mobile-first web applications using Angular, Bootstrap & TypeScript, enhancing user experience

& increasing customer engagement across desktop & mobile devices in omni-channel retail environment.

Designed and maintained dynamic front-end components with Thymeleaf and implemented asynchronous UI updates through AJAX, minimizing full-page reloads and optimizing user interaction workflows on high-traffic retail portals.

Developed comprehensive unit and integration test suites using JUnit and Mockito, ensuring 85%+ code coverage and establishing continuous quality assurance within Agile sprint cycles.

Automated Continuous Integration/Continuous Deployment (CI/CD) pipelines using Jenkins, configuring multi-stage Docker container deployments on AWS EC2 and orchestrated container clusters to ensure zero-downtime releases and scalability during peak shopping seasons.

Proactively monitored application health & performance using the ELK Stack (Elasticsearch, Logstash, Kibana) & Splunk, enabling root cause analysis & incident response to support 24x7 uptime SLAs typical in retail e-commerce ecosystems. EDUCATION:

Master of Science in Information Studies - Trine University, Angola, IN, USA Bachelor of Computer Science and Engineering - Jawaharlal Nehru Technological University, Hyderabad, India

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