Neil John Perez Selencio
Java Developer | Full Stack Developer
Profile
Dynamic and results-oriented Full Stack Developer with over 3 years and 6 months of experience specializing in high-scale fintech solutions. Expertise in architecting robust backend systems with Java (Spring Boot) and optimizing CI/CD pipelines. Proven track record in leading complex system migrations to enhance scalability in fast-paced enterprise environments.
Professional Experience
Full Stack Developer
September 2025 - Present- • Developed high-performance software programs using Java (Spring Boot) for millions of users.
- • Managed end-to-end CI/CD pipelines to streamline software delivery.
- • Leveraged AWS, Docker, and Kubernetes for modern cloud infrastructure.
Senior Backend Engineer
June 2025 - September 2025- • Engineered mission-critical payment processing systems for Maya's acceptance platform.
- • Developed comprehensive test suites to maintain 99.9% application accuracy.
- • Ensured strict compliance with regulatory and security standards.
Full Stack Developer
September 2023 - April 2025- • Successfully spearheaded the migration of over 30+ microservices.
- • Developed high-traffic APIs using Spring Boot and interactive frontends with Vue.js.
- • Created shared component libraries that reduced overall development time by 25%.
Junior Java Developer
August 2022 - August 2023- • Built and scaled web service APIs using Java and MVC architecture.
- • Identified and resolved performance bottlenecks in legacy codebases.
Technical Stack
JavaSpring BootMicroservicesSpring SecurityJPA/HibernateOracle SQLPL/SQLVue.jsAWS (Elastic Beanstalk)Azure DevOpsDockerKubernetesRabbitMQApache KafkaCI/CD (GitLab/GitHub Actions)Unit TestingJIRA/ConfluenceSplunkGrafanaSwagger/OpenAPI
Certifications
Advanced Spring BootVIEW ↗Learn AWS - Deploy Java Spring Boot to AWSVIEW ↗API and Web Service IntroductionVIEW ↗ASP.NET Core Web API BootcampVIEW ↗Problem Solving (Basic) CertificateVIEW ↗Azure DevOps Fundamentals for BeginnersVIEW ↗The Vue 3 Bootcamp - Complete GuideVIEW ↗GitLab CI/CD: Pipelines & DevOpsVIEW ↗
Education
Bachelor of Science in Information Technology
University of Eastern Philippines