Sales who builds. Demand Generation Representative at AWS Korea. I build the tools I wish I had for my own workflow, mostly on AWS, Supabase and Claude: sales-call logging, certification study apps, a personal ops dashboard, a retrospective pipeline.
- ceo-staff — personal ops dashboard + portfolio/blog site. React · Supabase · Vercel. Live at hyunseo-oh.vercel.app
- aws-saa-study — mobile-first AWS certification study app (SAA-C03 · CLF-C02 · DEA-C01) with an AI-generated question bank. Next.js · Supabase
- retro-automation-aws — personal retrospective pipeline: masking → Bedrock Knowledge Base RAG, handwritten-scan transcription, weekly report Lambda. CDK · Lambda · Bedrock
- call-shadowing — record a sales call → Amazon Transcribe → Bedrock drafts the call log → Notion. FastAPI
- kage-bunshin-lite — text → branded newsletter HTML with a pluggable theme system. Lambda · Bedrock · React
- AWS Certified Solutions Architect – Associate (2026)
- AWS Certified AI Practitioner (2025)
- AWS Certified Cloud Practitioner (2025)
- 2026-10-03 · Teaching my weekly Council report from my own feedback — A feedback file the Lambda reads at run time, a recurrence check, and training rows for a sentence classifier. Prompting first, then real ML.