P
Pushpaka Dunusinghe Mudiyanselage
About
Detail
Maharashtra, India
Résumé
Jobs
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Full Stack Java DeveloperFannie MaeFeb 2024 - Current (2 years 9 months)• Built and maintained enterprise-level applications using Java (Spring Boot) and React.js, enabling 20% faster transaction processing. • Integrated OAuth2 and JWT to enhance security measures, reducing unauthorized access attempts by 30%. • Created scalable, reusable REST APIs and ensured seamless frontend-backend communication. • Deployed applications using AWS services (EC2, RDS, S3), maintaining 99.95% uptime during high-traffic periods. • Improved SQL query performance by 40% using Hibernate optimizations and indexing strategies. • Achieved 95%+ code coverage through unit testing with JUnit and Mockito, enhancing code reliability. • Automated CI/CD pipelines via Jenkins, cutting release cycles from 5 days to 2. • Reduced code m- Full Stack Java DeveloperAmerican ExpressJan 2023 - Jan 2024 (1 year 1 month)• Developed full-stack features with Spring Boot, React, and PostgreSQL, supporting millions of daily transactions. • Implemented reusable microservices architecture, increasing development efficiency by 35%. • Led third-party API integrations (e.g., payment gateways), ensuring accurate data sync across distributed systems. • Played a key role in cloud migration to AWS, resulting in 40% infrastructure cost savings. • Enhanced frontend performance using React hooks and lazy loading, reducing page load time by 50%. • Delivered 40+ production features across 10 Agile sprints, contributing to faster go-to-market. • Identified and resolved backend bottlenecks, decreasing response time from 2.4s to under 1s. • Worked closely with QA for a
- Java DeveloperSecurian FinancialJan 2022 - Jan 2023 (1 year 1 month)• Contributed to the development of secure, scalable backend systems with Java, Spring MVC, and Hibernate. • Designed and consumed RESTful web services, powering customer-facing applications. • Assisted in migrating legacy monolithic systems to microservices, increasing deployment agility. • Refactored SQL logic for optimized queries, decreasing load times by 20%. • Led code reviews and mentored 5 junior developers, improving team code quality and consistency. • Supported Agile processes including daily scrums, retrospectives, and sprint planning sessions.
- Java Developer7-ElevenMar 2021 - Nov 2021 (9 months)• Assisted in the development of basic Java and Spring Boot modules for internal use. • Built CRUD applications with MySQL using JDBC for simple record management. • Developed REST endpoints and performed unit testing using JUnit. • Gained experience with Git, working on collaborative features and tracking issues. • Explored Eclipse IDE and participated in backend training projects to simulate real-world applications.
Education
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- Bachelor of ScienceMidwestern State University
- AAWS
- AAWS Certified Developer – Associate