Ahamed

About Ahamed

Software Engineer with 5 years of experience in backend development, and system design…

Experience

1. Full Stack Developer

   PayPal

   Jun 2024 — Present · US

   Collaborated in the development of applications using Spring Boot and Spring MVC for handling business logic, improving the modularity and reducing maintenance time by 15%.• Developed reusable UI components using React 18 and Next.js with TypeScript, and integrated them with backend APIs, improving code maintainability and user interaction consistency.• Implemented frontend testing using Jasmine/Karma and end-to-end automation using Protractor/Cypress, ensuring reliable releases with strong code coverage.• Integrated backend services with Azure-based data stores, including Cosmos DB, for storing high-volume, semi structured transactional and metadata records requiring low-latency access.• Designed Cosmos DB containers using partition keys aligned with access patterns to support scalable reads and writes across distributed workloads.• Designed database schemas and optimized query performance in PostgreSQL and Cassandra for large-scale data storage and analytics use cases.• Integrated OAuth 2.0 authentication and Spring Security to protect REST APIs and secure microservices in a distributed architecture.• Collaborated with backend teams to integrate secure APIs into React/Next.js applications, handling authentication flows, error states, and loading strategies in a user-friendly manner.• Participated in Agile sprints, code reviews, and continuous integration using Git, Bitbucket, and Jenkins for automated testing and deployments.• Containerized microservices with Docker and orchestrated deployments using Kubernetes, achieving zero-downtime rollouts.• Wrote unit and integration tests with JUnit and Mockito, ensuring high test coverage and reducing regression issues.