Background
About Me
From internal IT to edge-native cloud engineering
Started as an internal IT engineer, migrating web and email infrastructure to AWS (S3, CloudFront, Lambda, SES, Route53) and co-developing an IBM Watson × Slack helpdesk bot. The DX project was covered by a local business journal.
Earned CCNA, Linux+, and AWS SAA — all in English (TOEIC 890). Now building edge-native platforms with Cloudflare Pages + Hono + D1, full Terraform IaC, GitHub Actions OIDC CI/CD, and AI agent automation via MCP.
All infrastructure decisions are documented — including why certain technologies were deliberately not chosen. Rational, auditable, handover-ready.
Internal IT Engineer
Apr 2021 – May 2022
AWS web/email migration, IBM Watson × Slack helpdesk bot (2-person dev + 4-person cross-dept test). Full documentation. DX case published in local business journal.
Self-Study & Certification
2022 – 2025
CCNA, Linux+, AWS SAA — all English exams. TOEIC 890. Deepened IaC (Terraform), edge computing (Cloudflare), and AI automation while running freelance AWS projects.
Freelance Cloud Engineer
2025 – Present · Full Remote
Edge-native platforms (Cloudflare Pages + Hono + D1), AWS full-stack IaC, DMARC compliance, AI agent automation. All decisions backed by published technical articles.
What I Deliver
Services
Design → build → documentation — all in one engagement
Stack
Technical Skills
Cloud & IaC
- AWS — S3, CloudFront, Lambda, SES, Route53, IAM, EC2, ECS/Fargate, Kinesis Video Streams
- Terraform — full IaC, multi-env (Dev/Prd) module design, S3+DynamoDB state
- GitHub Actions CI/CD — OIDC (no access keys), PR preview deploy
- AWS Well-Architected, IAM least privilege, cost modeling
Edge & Web
- Cloudflare Pages + Hono + D1 — zero cold-start edge API
- Cloudflare Zero Trust, Tunnel, Access — secure internal tooling
- AI Gateway — multi-LLM proxy, caching, cost visibility
- Vite, TypeScript, Markdown auto-discovery build pipeline
AI & Automation
- MCP (Model Context Protocol) — AI agent infra delegation
- AI Gateway — OpenAI / Anthropic / Gemini multi-provider
- IBM Watson Assistant × Slack API (production, DX case)
- CloudWatch + Sentry + AWS Budgets × Lambda auto-stop
Networking & OS
- TCP/IP, DNS, SMTP, DMARC/DKIM/SPF — troubleshooting to fix
- Linux (RHEL / Ubuntu) — systemd, SELinux, iptables, cgroups
- CCNA-level routing/switching, packet-level debug
- Shell scripting, Python scripting
Tech Writing
Technical Articles
Implementation decisions backed by published articles — what was chosen and why
Rationality of Tech Selection: Axes from Internal SE to Cloud Engineer, and Technologies Deliberately Avoided
Edge-Native API Platform with Cloudflare Pages + Hono + D1: From Implementation to Automation
Serverless (Lambda/Fargate) vs Edge (Cloudflare): Choosing Resources by Processing Characteristics
AWS SES Sandbox Removal & DMARC 2026 Edition: Complete DNS Auth Guide
Automating Routine Ops with AI Agents: Infrastructure Management via MCP
Terraform Multi-Env (Dev/Prd) Loosely Coupled Module Design
Let's Talk
"Just want to explore the idea" or "need a quote" — either is fine.
First consultation is free. NDA available on request.
Response within 24–48 hrs (weekdays). Zoom / Google Meet available.