A public snapshot of the backend skills I’m deepening, the systems I’m building, and the evidence guiding my growth toward Backend / AX Software Engineer.
Focus Areas
Learning through real milestones
Progress is tracked by what I can build, explain, test, and deploy—not by made-up skill percentages.
Backend Engineering
In Development
Building production-ready REST APIs with Spring Boot, Spring Security, JWT authentication, MyBatis, PostgreSQL, validation, testing, and clean architecture.
Current focus
AuthHub authentication and authorization API
Milestones
Completed: Spring Boot REST API foundations
Completed: JWT issue, refresh, logout, and token revocation
Completed: PostgreSQL persistence and validation
In progress: Role and permission authorization hardening
Planned: Dockerized release and CI/CD quality gate
JavaSpring BootSpring SecurityMyBatisPostgreSQL
DevOps Fundamentals
Learning & Practicing
Learning how to build, deploy, monitor, and maintain applications using Docker, GitHub Actions, Linux, Nginx, CI/CD pipelines, and deployment strategies.
Current focus
Containerizing Spring Boot and Next.js applications
Milestones
Completed: Linux, Git, and environment configuration fundamentals
Completed: GitHub Actions build and test workflow
In progress: Multi-stage containers for Spring Boot and Next.js
Planned: Nginx reverse proxy and HTTPS setup
Planned: Deployment monitoring and rollback practice
DockerGitHub ActionsLinuxNginxCI/CD
AX Engineering
Actively Exploring
Learning how context, instructions, tools, agents, MCP, guardrails, quality gates, evaluations, observability, and handoff can make AI-assisted development more reliable.
Current focus
Structured AX Engineering curriculum and educational Agent Harness labs
Milestones
Completed: Structured planning and implementation prompts
Completed: AI-supported documentation and code review
Completed: Test-first verification loops for full-stack changes
In progress: Version-controlled AX curriculum and concept map
Planned: Project instructions, skills, and read-only MCP tool labs
Planned: Evaluation, observability, and handoff practice
Claude CodeCodexAgent HarnessMCPEvals
Korean for Software Engineers
Daily Practice
Improving speaking, listening, and workplace communication to collaborate more effectively with Korean product and engineering teams.
Current focus
Technical Korean, workplace conversations, and K-Specialist interview preparation
Milestones
Completed: TOPIK I language foundation
In progress: Daily technical vocabulary and listening practice
In progress: Workplace conversations and written updates
Planned: K-Specialist interview preparation
Planned: Technical presentation practice in Korean
Technical KoreanTOPIK IWorkplace CommunicationInterview Practice
Active Projects
Where the learning becomes software
These projects turn the focus areas above into APIs, workflows, product decisions, and deployed experiences.
