Bill Hong

Prompt engineering, LLM character design, Next.js, vibe coding with Claude Code and Codex

10+ yrs as a software engineer, then game industry CEO (100+ people). Solo in the AI era now — shipping Tendera end-to-end via vibe coding (Claude Code, Codex) and prompt engineering.

Tendera — a small AI companion platform with four hand-written characters. Now building a memory layer so each character remembers specific things about specific users across weeks.

Conversations about prompt engineering for characters, LLM memory systems, honest tradeoffs between DeepSeek vs OpenAI, and what it's like to ship an AI companion product solo.