Yohan Lee

Founder @ Vizzy Labs | Stanford | Creator(370K) | Ex-TikTok AI Video PM | StartX | We’re Hiring!!

San Francisco Bay Area

About

Build an AI search engine tailored for video content creators solving inspiration problems, serving as the intelligence layer for video production.

Experience

  • Founder at Vizzy Labs
    Sep 2024 - Present · 1 yr 11 mos

    Building the AI viral growth engineer that is chronically online, automatically browsing niche videos daily in the brand niche every hour, discovering the killer video format in real-time and sending alarms, and sourcing micro-influencers for brands before they go viral. 650M organic views engineered. Representative partners: MrBeast, Cluely, and consumer AI apps backed by a16z, GV, and Forerunner Ventures. We’re currently at the seed stage and have raised $7M to date. We’re actively hiring engineers & GTM roles. DMs are open!

  • Founder | S25 Cohort at StartX
    Jul 2025 - Present · 1 yr 1 mo

    StartX is the startup accelerator, fellowship, and community for Stanford students, professors, and alumni.

  • Growth Advisor at Stealth Startup
    Feb 2025 - Present · 1 yr 6 mos

    I’m part-time advising several AI startups(AI video generation, AI coding, AI-enabled DTC electronics, etc.), primarily on organic social growth & fundraising strategy.

  • Senior AI Product Manager & Content Creator(380K Followers) at TikTok
    Jul 2021 - Jan 2024 · 2 yrs 7 mos

    - Led team to launch TikTok Symphony, building Symphony assistant as the first video copilot that utilizes LLMs to batch analyze videos and generate personalized creative guidance for creators. - Built TikTok Creative Center(trends.tiktok.com), grew the user base from a few thousand to 5 million of brands and content creators, offering capabilities including TikTok Trend Discovery, Top Ads, and Script Generator. Featured in Forbes, The Sun, SocialMediaToday, and more. - Involved in E-commerce and APP key accounts creative taskforce, helping brands build content machine teams to fuel their rapid growth on TikTok, while also driving ROAS up by 24%. - Honored with the TikTok ByteStyle Award, achieved the E (Excellent, Top 1%) in annual performance rating, fast promotion to Senior PM within 1.5 years.

  • ZhenResidence Fellow at ZhenFund 真格基金
    Jul 2023 - Jul 2023 · 1 mo

    Zhenfund Entrepreneur in Residence program