Building scalable commerce platforms & API ecosystems.
10+ years leading digital transformation in e-commerce and SaaS. Launched an app-store ecosystem that cut customization costs by 90% and expanded market share by 10%. Led cross-functional teams, stabilized high-traffic APIs, and delivered omnichannel retail for global brands.
E-commerce & Platform Consultant (Independent)
- Advised major retail brands on end-to-end digital transformation on Cafe24.
- Architected omnichannel: BOPIS, ship-from-store, unified loyalty.
- Defined API requirements and sourced 3rd-party development partners.
Cafe24 Corp — Product Manager
- Launched open-API app store; 90% cost reduction for customization.
- Co-led global YouTube Shopping expansion (visibility↑; stock +11.78%).
- Resolved critical API CPU spike (90% → <60%) to protect 2M+ stores.
Cafe24 Corp — Project Manager
- Consulted Nike & YG Entertainment; enabled high-transaction launches.
- Contributed to YG store performance (35% of $430M revenue).
Cafe24 Corp — Product Owner
- Developed 300+ APIs; managed changelog and reliability.
- Reduced API response to milliseconds via weekly control-center reviews.
WEMAKEPRICE — Project Manager
- Refocused Kmall24 on the U.S. market and integrated Amazon & eBay, achieving ~473% YoY revenue growth within a year.
- Co-developed cross-border shipping insurance and a co-branded credit card with Shinhan Card and Mastercard, improving value for international shoppers.
Selected Projects
Representative work across platform, APIs, and commerce.
Nike (Converse Korea)
Built SSO, integrated SAP for inventory/accounting, and delivered raffle features tailored for high-demand drops.
- End-to-end single sign-on (SSO)
- SAP integration (inventory & accounting)
- Raffle backend & frontend via APIs
Impact: Enabled stable high-traffic launches for limited releases.
Cafe24 Developer Center
Core contributor to the open-API ecosystem: 300+ APIs, multi-lingual docs, and API reliability/control tower.
- 300+ APIs across commerce domains
- Changelog management & reliability ops
- Docs in English/Japanese/Korean
Impact: Launched an app-store model reducing customization costs by ~90% and growing market share by ~10%.
E-Land (SPAO)
Migrated e-commerce platform, introduced store-pickup delivery model, and implemented SSO.
- Platform migration
- Pickup at local store (BOPIS)
- SSO across services
Impact: Reduced delivery friction and supported omnichannel flows.
CJ Olive Young (Global)
Delivered APIs and integrated SAP for the first global version of the online store.
- Global commerce APIs
- SAP integration
Impact: Prepared the foundation for global expansion.
YG Entertainment
Launched a new e-commerce site and implemented chatbot & high-traffic operations.
- New e-commerce build
- Chatbot implementation
Impact: Drove 35% of $430M annual revenue via album & merch sales.
SM Entertainment
Integrated chart sales between offline & online, implemented pre-order, and delivered SSO.
- Chart data integration
- Pre-order system
- SSO
Impact: Streamlined release operations across channels.
LAMY
Built a custom product configurator for personalized orders.
- Configurator UX
- Order customization
Impact: Increased perceived product value and AOV.
Dong-A Pharmaceutical (DMall)
Bootstrapped e-commerce from scratch including design & development; built a referral system.
- Greenfield build
- Referral backend & frontend
Impact: Accelerated time-to-market for D2C channel.
Skills
Contact
Email: hankyulbaik@gmail.com · LinkedIn: hankyul-baik