Java backend engineer focused on AI engineering, agent applications, AI Coding workflows, and Spec-driven development (SDD).
I started from backend development, but I have always been more interested in how systems are designed, maintained, evolved, and delivered. Recently, my focus has shifted to how AI can become part of real software engineering work instead of staying as isolated demos.
- Java backend engineer with experience in enterprise systems, Spring Boot, microservices, API contracts, CI/CD, and engineering governance
- Working on AI engineering, agent applications, and AI Coding workflows in real projects
- Practicing Spec-driven development (SDD) to make AI-assisted delivery more structured, controllable, and reviewable
- Using AI Coding tools for requirement analysis, code exploration, implementation, refactoring, testing, review, and delivery
- Interested in practical AI systems that are observable, testable, maintainable, and able to fit into real engineering environments
- AI Coding workflows and developer productivity
- Spec-driven development (SDD)
- Agent applications, tool calling, context engineering, and workflow orchestration
- Enterprise AI integration with existing systems, knowledge bases, business workflows, and DevOps pipelines
- Backend architecture, DDD, API contracts, reliability, and maintainability
- AI application development ecosystems and engineering toolchains
- Blog: Code4j
- Knowledge Base: 鱼开饭
- Email: yukaifan@code4j.site
The dots will somehow connect in your future.