Back-end Developer focused on DevOps, Observability, and Automation.
I enjoy turning “ops pain” into reliable, observable, automated systems.

• ~57% faster GitHub integration response time via Redis token caching
• Built an incident-response automation flow: Automation 100% / Success 80% / MTTR -43%
• Operate self-hosted infrastructure with CI/CD, monitoring, and backup practices

Experience-based portfolio editor & hiring connection platform.

• GitHub API features + Redis caching to reduce latency (~57%)
• Search with MongoDB + Atlas Search
• CI/CD with Docker Compose + GitHub Actions
• Integrations: AWS S3 / SES, Solapi (Alimtalk)

AI Assistant flow for incident mitigation in a cloud-infra environment.

• K3s cluster on 3 Raspberry Pi nodes
• Tailscale VPN for remote access & inter-system connectivity
• Observability stack: Prometheus / Loki / Alertmanager
• Automation: n8n + Ollama (llama3) with verification/feedback loop
• Result: Automation 100% / Success 80% / MTTR -43%

Self-hosted code management + study + monitoring platform.

• Oracle Cloud (OCI) + Docker / Compose
• Gitea + Gitea Runner CI/CD 운영
• Nginx + Certbot, FastAPI + n8n workflows
• Operates a Discord bot that delivers coding-test problems on schedule

• Led the 12th cohort as the representative of LIKELION HUFS Global
• Coordinated communication, community activities, and overall cohort operations
• Supported team collaboration and program participation throughout the term

• Led PR and event operations for a 10-university joint hackathon
• Designed the hackathon concept and promotional direction
• Managed merchandise production, venue coordination, and judge outreach
• Produced Instagram promotional content and sponsor proposal decks

• Taught Django-based programming classes for students
• Mentored students in developing a school bazaar-related web service as a hands-on team project
• Supported learners in planning and implementing simple practical software projects

• Assisted with course operation for Computer Programming classes
• Supported students with programming practice and problem solving
• Helped facilitate learning activities during the semester

• Supported coding practice sessions as a teaching assistant
• Helped learners understand programming concepts and complete exercises

• Continued supporting coding practice sessions as a teaching assistant
• Assisted students with programming exercises and learning guidance

• Participated as a member of LIKELION HUFS Global 11th
• Engaged in programming study, team activities, and community events

• Participated in the Smilegate creative mentoring ideathon
• Worked on idea development and presentation activities

• Participated in the central hackathon as a member of LIKELION HUFS Global 11th
• Collaborated on service ideation and development under time constraints

• Participated in a joint inter-university hackathon
• Collaborated with teammates on ideation and hackathon execution

• Participated in the 2024 HUFSummer Hackathon
• Collaborated on idea development and hackathon project execution

• Participated in the central hackathon as a member of LIKELION HUFS Global 12th
• Worked collaboratively on service planning and development under time constraints

• Leader of LIKELION Global 12th cohort
• Top Award (1st place) · 2023 Inter-university Hackathon (10 universities)
• Linux Master Level 1

• Portfolio (Gitea): https://nkeystudy.site/gitea/
• LIKELION Archive: https://velog.io/@hufsglobal09/series/HUFSLION12th-Archive