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A collection of my deep dives into core technologies, grounded in hands-on experience.
| Year | Date | Category | Title |
|---|---|---|---|
| 2026 | ...7/29 | AI x Athenz | ... KubeCon Japan 2026 in Yokohama: ID-JAG |
| ...6/29 | AI x Athenz | LY Tech-Verse 2026: ID-JAG: The Enterprise-Ready Standard for AI Agent Authorization in the MCP & A2A Era | |
| 2/20 | K8s | LF AI & Data Japan RUG 3rd (Video) (Google Drive) |
| Year | Date | Category | Title |
|---|---|---|---|
| 2026 | ... | AI x Athenz | ...ID-JAG Implementation with Athenz and Keycloak hands-on |
| 4/1 | AI x Athenz | Why ID-JAG is the future of AI agent security - LY Tech Blog (ko) (ja) | |
| 2025 | 10/1 | K8s | From Athenz to Kubernetes: My journey to Kubestronaut - LY Tech Blog (ko) (ja) |
| Year | Date | Category | Title |
|---|---|---|---|
| 2026 | ... | AI x Athenz | ...ID-JAG hands on |
| 4/7 | K8s | [Hands-on] Kubernetes Pod Certificate Request introduced in k8s v1.35 | |
| 4/1 | Athenz | [Hands-on] Testing Separate Ports in Athenz ZTS | |
| 3/7 | Athenz | Read Athenz Patch Note v1.12.27 | |
| 2/21 | Okta x Athenz | [Post-Mortem] Deploying Athenz with Okta Sign-In: A Partial Success | |
| 2/11 | Athenz | I Deployed Athenz/k8s-athenz-syncer locally! (Feat. Fixing Legacy Code) | |
| 2/7 | Athenz | Integrate Athenz Notification Feature with AWS SES | |
| 2025 | 12/30 | K8s | Stop Using Magic: Building a Kubernetes Operator from Scratch |
| 12/21 | K8s | Why this K8s TODO survived 3 years: An Autopsy of fieldnamedocscheck | |
| 11/30 | Linux | How 'cd' actually works in Linux Kernel: A Source Code Analysis |
Starting in 2025, I stopped setting goals for getting IT certifications. In the age of AI, most of them feel pretty useless—unless you’re a doctor or in a similar field. But before AI took over, certificates were a great way to show how hard I studied and exactly which areas I dived into. So, I’m recording them here as a log of my past journey
| Year | Date | Category | Certificate Name |
|---|---|---|---|
| 2025 | 7/21 | K8s | Kubestronaut |
| K8s | KCNA: Kubernetes and Cloud Native Associate | ||
| 6/27 | K8s | KCSA: Kubernetes and Cloud Native Security Associate | |
| 3/3 | Security | CompTIA Security+ ce Certification | |
| 2024 | 9/9 | K8s | CKS: Certified Kubernetes Security Specialist |
| 2023 | 9/4 | K8s | CKAD: Certified Kubernetes Application Developer |
| 3/11 | K8s | CKA: Certified Kubernetes Administrator | |
| 2024 | 5/29 | AWS | AWS Certified Solutions Architect – Associate |
| 2021 | 5/29 | AWS | AWS Certified Cloud Practitioner |
| 2019 | ? | English | TOEIC 965 |
| 2017 | ? | Japanese | JLPT N1 |
| 2016 | ? | Chinese | HSK 5 |
| 2015 | ? | Chinese | HSK 4 |
| 2014 | ? | Japanese | JLPT N2 |