- Revolutionizing advertising for game developers by leveraging GenAI to create engaging, interactive playable ads at scale

Advised portfolio companies of the VC firm that invested in my last startup- Developed a startup growth coaching framework that emphasizes 'focusing on one thing'- Coached 17 different startups and achieved a NPS of 9.3 from the startup founders

Served as the CPO after acquisition for Korea’s leading and fastest growing telemedicine startup (raised $41M in VC funding)- Launched a WebMD-like medical inquiry service with SEO which helped the company surpass the 1 million MAU milestone

Built and exited a startup building an AI doctor for patients with chronic diseases- Achieved retention plateau at a 40% weekly retention rate and was acquired

- Achieved 11 million MAU, optimized existing inflow pipelines using growth hacking methodologies, and launched dozens of new inflow products- Achieved 2 million account/card registrations; launched a service to receive COVID-19 relief funding which led to 800,000 card registrations within one week of launch- Doubled our revenue; launched a pass-through rebate program for new card issuance; launched Toss’s membership program; built P2P lending service; among others

- Revamped the product ranking algorithm for websites, increasing conversion rate by 10% and transaction volume by 3% using machine learning algorithms (PCA, K-means, and AR)- Developed LTV (Lifetime Value) and churn rate prediction models using piecewise linear regression

- Launched personal asset management application 'Broccoli'- Launched mobile pawn shop application 'Lending Box'

- Launched Fruit9, a sharehouse in Apgujeong, Gangnam, achieving full occupancy within one month