Shang-Hao Yang

Lead backend architecture and legacy modernization for the group's listed companies, managing two engineers.

• Delivered a visitor access platform integrated with existing door controllers, serving 20+ tenants.
• Migrated two legacy applications spanning 5+ business systems to Spring Boot with zero downtime.
• Integrated SSO with Keycloak (OIDC) and back-channel logout, with sessions centralized in Redis.
• Built the internal framework: parent POM and BOM plus shared Spring Boot starters.
• Introduced Liquibase for schema versioning, making changes traceable and reviewable.
• Adopted Testcontainers for integration tests, running real dependencies in containers instead of mocks.
• Optimized GitLab CI runners, cutting build time by 30% and bandwidth by 75%.
• Mentored junior engineers and set team workflow standards through workshops and documentation.

A Resume as Code SaaS: write your resume in YAML on GitHub, and every push builds a PDF and a web page.

• Built the full product end-to-end: API server, dashboard, landing page, and webhook-driven build pipeline.
• Implemented multi-provider OAuth login with stateless sessions (JWT in HttpOnly cookies).
• Integrated a third-party payment provider for subscription billing: checkout, renewals, and cancellations.
• Shipped an MCP server for AI agents, secured by a built-in OAuth 2.1 authorization server (DCR).
• Added custom domains with automated SSL and one-click DNS setup via Domain Connect.
• Provisioned infrastructure with Terraform and automated CI/CD with GitHub Actions.

A lightweight, open-source macOS launcher with built-in AI commands, app search, clipboard history, and snippets.

• Contributed 15 merged PRs to the Spring Boot and React generators.

• Fixed the OIDC ID Token not updating after the Refresh Token flow (PR #16589).