Sr. Java Full Stack Developer at UPS

Designed and developed scalable microservices using Java 17, Spring Boot, and Agile practices, focusing on a centralized IAM platform with multi-tenant authentication, RBAC, and real-time identity events. Implemented synchronous REST APIs and asynchronous Kafka messaging, modernizing legacy components by migrating monolithic services to domain-driven microservices. Built secure SSO with Keycloak (SAML, OAuth2, OIDC, JWT) and evaluated MFA solutions. Built real-time, event-driven flows using Kafka and WebSocket; optimized relational schemas in PostgreSQL/Oracle with indexing and ACID transactions. Delivered full-stack features with Angular 17 and Spring Boot REST APIs, incorporating RxJS patterns. Established containerized deployments with Docker and Kubernetes (Helm), automated CI/CD via Azure DevOps, and comprehensive monitoring with Prometheus/Grafana and Azure Application Insights. Documented APIs with Swagger/OpenAPI and managed secrets with Azure Key Vault. Led code reviews, empha

Sr. Java Full Stack Developer at EXTREME NETWORKS

Designed, developed, and deployed scalable microservices using Java 17, Spring Boot, and Spring WebFlux; implemented multi-tenant IAM, multithreading and asynchronous processing with CompletableFuture. Migrated legacy Java EE components to modular microservices guided by Domain-Driven Design; integrated Spring Security and Keycloak SSO with LDAP federation. Built low-latency, event-driven architectures using Kafka, WebSocket, and AWS Lambda; modeled relational data with PostgreSQL/Oracle and implemented caching with Redis. Delivered full-stack features with Angular 17 and Spring Boot REST APIs; integrated GraphQL for dashboards. Deployed Docker/Kubernetes with Helm; automated CI/CD pipelines with Jenkins, Nexus, and GitHub Actions; established monitoring with Prometheus and Grafana; created OpenAPI documentation. Emphasized secure coding practices and code quality with JUnit/Mockito, Postman, and Cypress.

Sr. Java Full Stack Developer at ARVEST BANK

Designed and implemented secure, real-time payment APIs and backend microservices using Java 17, Spring Boot, JPA/Hibernate, delivering PCI-DSS compliant payment gateway, fraud detection, transaction analytics, and user account monitoring. Built REST APIs with OAuth2 + JWT; integrated GraphQL with React dashboards; created microservices with Spring Cloud Gateway, Eureka, and Config Server. Implemented asynchronous messaging with Apache Kafka; built streaming pipelines with Redis caching and DynamoDB; deployed infrastructure on AWS using Lambda, RDS, S3. Automated CI/CD via Jenkins/GitHub; documented APIs with OpenAPI/Swagger; ensured OWASP-aligned security and tokenization. Worked on enterprise security and SSO with Keycloak; maintained test coverage with JUnit/Mockito and Postman.

Sr. Java Full Stack Developer at TCS

Delivered cloud-native healthcare microservices using Java 11, Spring Boot, and Spring Cloud; implemented FHIR-compliant REST APIs for secure, interoperable data exchange between EHRs and third-party applications. Developed secure RESTful APIs with Spring Boot, Spring MVC, and OAuth2 + JWT authentication. Implemented microservices with API routing and centralized configuration management, integrated GraphQL APIs with React/Apollo, and established real-time data flows via WebSocket and Kafka. Built batch processing with Spring Batch and data analytics pipelines with Apache Spark; implemented observability with Datadog and AWS CloudWatch; automated CI/CD in Jenkins; adhered to HIPAA encryption and security practices.

Java Full Stack Developer at NOKIA_FLOWONE

Developed high-performance microservices with Java 11, Spring Boot, and WebFlux; implemented Kafka/Kafka Streams for real-time processing and migrated SOAP services to REST via Apache CXF. Built WebSocket/Server-Sent Events for live updates; leveraged PostgreSQL, MongoDB, Cassandra, and Redis for scalable data storage and caching. Deployed on AWS (Lambda, EKS) with CloudFormation; used OpenTelemetry, Prometheus, and Grafana for end-to-end observability. Implemented CI/CD with Jenkins, Helm, and Istio for service mesh. Integrated with IBM WebSphere MQ for secure asynchronous messaging and built streaming data pipelines with Spark; frontend using React/Angular; ensured secure authentication with Keycloak.

Java Developer at ERICSSON

Led modernization by migrating monolithic Java applications to scalable, modular microservices using Spring Boot, Spring MVC, and RESTful APIs. Built backend modules with Spring Data JPA, Hibernate, and RabbitMQ for asynchronous communication; optimized relational databases (PostgreSQL) and introduced secure authentication/authorization patterns. Developed frontend components with Angular 6+; automated UI testing with Selenium; supported CI/CD processes and logging dashboards to improve maintainability and reliability.