Hanyang G.

About Hanyang G.

Full Stack Developer with 4+ years of experience building internal enterprise applications using Java, Spring Boot, React, and relational databases. Focused on backend service development, access control, and supporting complex business workflows with maintainable, well-tested code.

Experience

1. Full Stack Developer

   State Of Alabama

   Jun 2022 — Present

   Built and maintained a production-facing capital project management platform using Spring Boot and React, supporting project instance CRUD workflows and multi-key search for internal operations.2. Developed backend services through CSR patterns and Spring Data JPA, isolating business logic in service layers to reduce coupling and improve long-term maintainability.3. Implemented JWT-based authentication and role-based authorization with Spring Security, enabling reviewers to update contract statuses (NTP / EXECUTED / CLOSED) while restricting edits for standard users.4. Managed schema evolution with Flyway migrations on a normalized PostgreSQL model, supporting multi-table join queries for project detail views and preventing schema drift across environments.5. Maintained 90%+ unit test coverage using JUnit and Mockito, integrating tests into Travis CI pipelines and deploying releases to Heroku to prevent regressions during ongoing development.

Education

• Case Western Reserve University

  Master's degree

• Shandong University of Science and Technology

  学士

• Clark University

  Bachelor's degree