Toss Ads

• Built and operated the advertising platform and admin console for the 15M+ MAU Toss app, enabling campaign creation, approval workflows, and performance analytics

• Toss Ads Admin Console

  • Developed and maintained the Toss Ads Admin Console for managing ad platforms and inventory, enforcing strict ad policies by approving compliant ads and rejecting non-compliant ones

  • Improved campaign ad review workflows to keep pace with a rapidly growing advertiser platform

  • Built ad spend promotion configuration features to streamline operations for live commerce and short-form ad formats

  • Enhanced the ad modification and resubmission flow to improve the advertiser experience

  • Developed an agency dashboard for managing advertiser agency accounts

• Lead Form

  • Added diverse question types and improved consent form functionality in response to advertiser requirements

• Conversion Tracking

  • Developed conversion tracking features to enable accurate performance measurement for advertisers

• Display Ads

  • Implemented the Maximize Conversion billing model

  • Added SALES and LEAD campaign objectives

• Authentication Integration with Toss Business

  • Integrated the authentication system with Toss Business, resolving account linking issues during migration

In-App Customer Center

• Addressed customer support requirements from cross-functional internal teams

• Consolidated previously fragmented entry points for erroneous transfer resolution across subsidiaries

• Added chatbot scenarios and improved agent escalation paths

• Developed a payment protection guarantee feature

• Redesigned the customer center around search-based navigation, driven by analysis of user dwell time and VoC resolution metrics

Standard Consent Module

• Improved the company-wide standard consent module to comply with legal requirements and align with internal UX writing guidelines and UI/UX principles

• Designed safer interfaces to reduce unintended developer errors and implemented new lint rules to enforce correct usage

Developed a user-facing app integrated with a nutritional supplement dispenser

Built a marketplace platform for selling nutritional supplements and dispensers