Full Stack Java Developer at Verizon

Designed and developed Spring Boot microservices for onboarding, metadata, and score/reporting workflows; exposed secure REST APIs via API Gateway with OAuth2/JWT; implemented pagination, filtering, and sorting for metadata search; analyzed heap dumps to identify memory leaks in BigQuery integration services; built dynamic UI dashboards with Angular; created middleware in Node.js for data transformation; implemented debounced, lazy-loading, and memoization techniques to improve client-side performance; built JAX-RS (Jersey) APIs for legacy integrations; implemented event-driven processing with Kafka and AWS EventBridge and asynchronous queues with SQS/SNS; designed data models and SQL procedures in PostgreSQL; optimized queries and indexes; automated CI/CD with Jenkins; containerized and deployed to Kubernetes/OpenShift; collaborated with React UI teams on API contracts.

Senior Backend Engineer at Amazon

Led system design and development of Java 11/17 Spring Boot backend services for a financial onboarding platform handling provider contracts, tax/banking details, payments, and device royalty calculation. Implemented REST controllers, validation, and exception handling; secured internal APIs with OAuth2/JWT and service-to-service auth; built dynamic forms for onboarding workflows using Angular 14; implemented lazy loading modules; created lightweight Node.js backend services; used TypeScript generics for reusable service models; designed optimized queries for payment and royalty systems and created materialized views for reporting; built rich front-end features with React, TypeScript, HTML/CSS; wrote end-to-end tests in Cypress to harden critical workflows.

Java Developer at Cognizant

Developed backend services using Java 8 and Spring Boot 2.x, implementing clean layered architecture with clear separation of business logic and data access, building REST APIs and integrating with Oracle/MySQL. Designed and consumed REST APIs using JSON payloads, implemented validation using Spring Validator and Hibernate annotations, and handled session management and security layers. Migrated legacy UI components to Angular and built reusable form components. Implemented batch jobs, caching, and pagination to improve performance and stability of data-heavy modules. Built UI components with JavaScript/Angular; integrated with backend services and third-party APIs. Created unit/integration tests with JUnit/Mockito; configured Jenkins CI and Git workflows; participated in Agile ceremonies.