Products I have owned, and what changed because of it.
AI Product Manager · Channel Corp
Feb 2026 – Jul 2026
Korea's leading AI customer service platform · 250K+ business customers · Series D
Launched the company's first small-business freemium tier.
Thirty customer interviews surfaced the mismatch: we were selling customer-service
efficiency to owners who wanted revenue. Repackaged three AI products around that reframe,
established product-market fit, and converted the first free account at $110 per month.
Defined the small-business scope for the company's AI analytics agent.
Twenty-five founder interviews and thirty live sales calls, validated with a Claude Code
prototype before specs. Shipped two products and elevated a cash-flow report from P2 to P0
against the internal roadmap.
Drove AI sales agent answer accuracy from 36% to 90%.
Designed the conversation state flow and hallucination guardrails across five QA rounds,
piloting the agent to replace a manual lead-qualification process that converted at 7%.
Selected the pilot customer from 19 candidates on purchase-intent data.
Forward-deployed a voice AI agent across three use cases, including
satisfaction calls for Korea's largest childcare commerce platform, doubling survey
completion. Killed the debt-collection track for regulatory risk.
V
Founder & CEO · Valuelab
Mar 2024 – Jan 2026
Product and go-to-market consultancy for early-stage startups
Rebuilt the user journey and product architecture for InAnswer, an AI
education startup — sign-up from three steps to one, SKU portfolio from five to three,
driving 10x month-over-month sign-up growth.
Ran Brandazine's (YC W22) Japan market entry from zero.
Designed the localized go-to-market motion and the testing framework behind it, doubling
lead volume at 80% lower acquisition cost.
Growth Product Manager · Kakao Pay Securities
Sep 2022 – Jan 2024
Korea's leading fintech firm · $2.8B+ assets under management
Built a two-tier dormant-user reactivation system.
Behavioral analysis surfaced the milestones that predicted retention; aligning eight
cross-functional teams reactivated 50% of 10,000 dormant users on day one, at 80% retention.
Designed a tiered stock-transfer incentive program that generated $19M in
inflows and $165M in trading volume, enabling management's acquisition talks with U.S.
brokerage Siebert Financial.
Growth Manager · LINE PLUS / LINE Corp.
Apr 2018 – Aug 2022
Global messaging platform · 220M+ monthly active users · Seoul and Tokyo
Pioneered the Japan launch of OpenChat, LINE's interest-based public group
chat product. Ran 100+ experiments to scale past 3M monthly active users and rank among
LINE's global top three products by growth.
Rebuilt the sign-up flow after six months of user data showed 10% of
sign-ups came from in-app referrals — eliminating landing pages lifted conversion 26%
and cut three ops hours per week.
