![header](https://capsule-render.vercel.app/api?type=blur&color=gradient&height=300§ion=header&text=Nkey's%20Record🎶&fontSize=90&fontColor=023373) ## 👋 About Me Back-end Developer focused on **DevOps, Observability, and Automation**. I enjoy turning “ops pain” into **reliable, observable, automated** systems. --- ## 🚀 Highlights - **~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 --- ## 🧩 Projects ### Colio (Feb 2025 – Present) · Backend 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)** ### HUFS CES Capstone (Sep 2025 – Dec 2025) · Infra / Backend / Frontend 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%** ### NkeysWorld (Jan 2026 – Present) · Personal Infrastructure 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 --- --- ## 💼 Experience ### Leadership #### LIKELION HUFS Global 12th (Mar 2024 – Dec 2024) · Representative - 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 #### Ganziton: Python (10-University Joint Hackathon) (May 2024 – Nov 2024) · PR Team Leader - 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 --- ### Teaching & Mentoring #### Coding Education Volunteer at Pungsaeng High School (Mar 2024 – Dec 2024) · Instructor - 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 #### Computer Programming, Division of Semiconductor and Electronic Engineering (Mar 2024 – Jun 2024) · Teaching Assistant - Assisted with course operation for Computer Programming classes - Supported students with programming practice and problem solving - Helped facilitate learning activities during the semester #### Coding Zone (Sep 2024 – Dec 2024) · Teaching Assistant - Supported coding practice sessions as a teaching assistant - Helped learners understand programming concepts and complete exercises #### Coding Zone (Sep 2025 – Dec 2025) · Teaching Assistant - Continued supporting coding practice sessions as a teaching assistant - Assisted students with programming exercises and learning guidance --- ### Activities & Hackathons #### LIKELION HUFS Global 11th (Mar 2023 – Dec 2023) · Member - Participated as a member of LIKELION HUFS Global 11th - Engaged in programming study, team activities, and community events #### Smilegate Creative Ideathon (Jul 2023) · Participant - Participated in the Smilegate creative mentoring ideathon - Worked on idea development and presentation activities #### LIKELION HUFS Global 11th Central Hackathon (Aug 2023) · Participant - Participated in the central hackathon as a member of LIKELION HUFS Global 11th - Collaborated on service ideation and development under time constraints #### Ganziton: Mirthon (9-University Joint Hackathon) (Nov 2023) · Participant - Participated in a joint inter-university hackathon - Collaborated with teammates on ideation and hackathon execution #### HUFSummer Hackathon (Jun 2024) · Participant - Participated in the 2024 HUFSummer Hackathon - Collaborated on idea development and hackathon project execution #### LIKELION HUFS Global 12th Central Hackathon (Aug 2024) · Participant - Participated in the central hackathon as a member of LIKELION HUFS Global 12th - Worked collaboratively on service planning and development under time constraints ## ⚙️ Tech Stack (Unified Badges) ### Languages ![Python](https://img.shields.io/badge/Python-0B0B0B?style=flat-square&logo=python&logoColor=white) ![Java](https://img.shields.io/badge/Java-0B0B0B?style=flat-square&logo=openjdk&logoColor=white) ![C](https://img.shields.io/badge/C-0B0B0B?style=flat-square&logo=c&logoColor=white) ![JavaScript](https://img.shields.io/badge/JavaScript-0B0B0B?style=flat-square&logo=javascript&logoColor=white) ![Bash](https://img.shields.io/badge/Bash-0B0B0B?style=flat-square&logo=gnubash&logoColor=white) ![R](https://img.shields.io/badge/R-0B0B0B?style=flat-square&logo=r&logoColor=white) ### Backend / Frameworks ![Django](https://img.shields.io/badge/Django-0B0B0B?style=flat-square&logo=django&logoColor=white) ![DRF](https://img.shields.io/badge/DRF-0B0B0B?style=flat-square&logo=django&logoColor=white) ![FastAPI](https://img.shields.io/badge/FastAPI-0B0B0B?style=flat-square&logo=fastapi&logoColor=white) ![Spring Boot](https://img.shields.io/badge/Spring%20Boot-0B0B0B?style=flat-square&logo=springboot&logoColor=white) ![Laravel](https://img.shields.io/badge/Laravel-0B0B0B?style=flat-square&logo=laravel&logoColor=white) ### Frontend ![React](https://img.shields.io/badge/React-0B0B0B?style=flat-square&logo=react&logoColor=white) ![Next.js](https://img.shields.io/badge/Next.js-0B0B0B?style=flat-square&logo=nextdotjs&logoColor=white) ![Vercel](https://img.shields.io/badge/Vercel-0B0B0B?style=flat-square&logo=vercel&logoColor=white) ### Database / Cache / Search ![PostgreSQL](https://img.shields.io/badge/PostgreSQL-0B0B0B?style=flat-square&logo=postgresql&logoColor=white) ![MongoDB](https://img.shields.io/badge/MongoDB-0B0B0B?style=flat-square&logo=mongodb&logoColor=white) ![MySQL](https://img.shields.io/badge/MySQL-0B0B0B?style=flat-square&logo=mysql&logoColor=white) ![Redis](https://img.shields.io/badge/Redis-0B0B0B?style=flat-square&logo=redis&logoColor=white) ![Atlas Search](https://img.shields.io/badge/MongoDB%20Atlas%20Search-0B0B0B?style=flat-square&logo=mongodb&logoColor=white) ### Infra / DevOps ![Docker](https://img.shields.io/badge/Docker-0B0B0B?style=flat-square&logo=docker&logoColor=white) ![Docker Compose](https://img.shields.io/badge/Docker%20Compose-0B0B0B?style=flat-square&logo=docker&logoColor=white) ![Kubernetes](https://img.shields.io/badge/Kubernetes-0B0B0B?style=flat-square&logo=kubernetes&logoColor=white) ![K3s](https://img.shields.io/badge/K3s-0B0B0B?style=flat-square) ![Nginx](https://img.shields.io/badge/Nginx-0B0B0B?style=flat-square&logo=nginx&logoColor=white) ![Linux](https://img.shields.io/badge/Linux-0B0B0B?style=flat-square&logo=linux&logoColor=white) ![GitHub Actions](https://img.shields.io/badge/GitHub%20Actions-0B0B0B?style=flat-square&logo=githubactions&logoColor=white) ![Gitea](https://img.shields.io/badge/Gitea-0B0B0B?style=flat-square&logo=gitea&logoColor=white) ### Observability (Monitoring / Logging) ![Prometheus](https://img.shields.io/badge/Prometheus-0B0B0B?style=flat-square&logo=prometheus&logoColor=white) ![Grafana](https://img.shields.io/badge/Grafana-0B0B0B?style=flat-square&logo=grafana&logoColor=white) ![Loki](https://img.shields.io/badge/Loki-0B0B0B?style=flat-square&logo=grafana&logoColor=white) ![Alertmanager](https://img.shields.io/badge/Alertmanager-0B0B0B?style=flat-square&logo=prometheus&logoColor=white) ![Fluent%20Bit](https://img.shields.io/badge/Fluent%20Bit-0B0B0B?style=flat-square) ### Automation / Workflow / Collaboration ![n8n](https://img.shields.io/badge/n8n-0B0B0B?style=flat-square&logo=n8n&logoColor=white) ![Jira](https://img.shields.io/badge/Jira-0B0B0B?style=flat-square&logo=jira&logoColor=white) ![Discord](https://img.shields.io/badge/Discord%20Webhooks-0B0B0B?style=flat-square&logo=discord&logoColor=white) ### Cloud / Networking / Ops ![AWS](https://img.shields.io/badge/AWS-0B0B0B?style=flat-square&logo=amazonaws&logoColor=white) ![Oracle%20Cloud%20OCI]() ![Tailscale](https://img.shields.io/badge/Tailscale-0B0B0B?style=flat-square&logo=tailscale&logoColor=white) ![Ollama]() ![Restic](https://img.shields.io/badge/Restic-0B0B0B?style=flat-square) ![Solapi](https://img.shields.io/badge/Solapi-0B0B0B?style=flat-square) --- ## 🏆 Awards & Activities - Leader of LIKELION Global 12th cohort - **Top Award (1st place)** · 2023 Inter-university Hackathon (10 universities) - Linux Master Level 1 --- ## 🔗 Links - Github: https://github.com/sm4640 - LIKELION Archive: https://velog.io/@hufsglobal09/series/HUFSLION12th-Archive [![hits](https://myhits.vercel.app/api/hit/https%3A%2F%2Fgithub.com%2Fsm4640?color=blue&label=hits&size=medium)](https://myhits.vercel.app)