+47%+
Growth in advertising investment
Performance Marketing,
Connected to Business Growth.
Turning campaign data into practical decisions — connecting performance analysis, media strategy, and client partnership to support measurable business outcomes.
DATA-DRIVEN
STRATEGY-LED
BUSINESS-FOCUSED
+108%
Growth in conversion revenue
Measurement period: full-year 2024 compared with full-year 2025 · Premium women's fashion client (anonymized).
01 / CORE EXPERTISE
Campaign optimization
through data analysis.
A connected approach to performance marketing — from interpreting data to shaping the next campaign decision.
Performance Analytics
Interpret ROAS, CPA, media-platform data, and Google Analytics to identify trends and opportunities.
Media Planning
Build monthly media mixes around budgets, promotions, and campaign objectives.
Campaign Optimization
Test targeting and advertising products, monitor performance, and make measured adjustments.
Client Partnership
Translate performance insights into clear recommendations, reviews, and long-term plans.
02 / SELECTED WORK
Decisions that
drive performance.
Selected examples of client management, platform testing, and high-pressure campaign optimization. Client identities and confidential account materials are intentionally omitted.
From Campaign Management to Business Growth
Managed performance campaigns for a premium women's fashion client, using ROAS, CPA, media data, and GA insights to evaluate performance trends and recommend optimization opportunities. Regular communication and data-led reviews supported an ongoing client partnership and increased advertising investment.
Approach
Monitored campaign performance, interpreted media and analytics data, and developed recurring recommendations grounded in business and campaign objectives.
Business outcomes
Advertising investment increased by 47% or more, while conversion revenue grew by 108% year over year, comparing full-year 2024 with full-year 2025.
The figures represent year-over-year business results. They are presented as client outcomes, not as the result of any single optimization action.
Turning Media Insights into Better Decisions
Used platform-specific testing and collaboration with media representatives to find campaign approaches better suited to each client's goals.
META / Audience Testing & Optimization
TEST → LEARN → OPTIMIZEConducted A/B tests to compare targeting options. Using audience data collected for each client, evaluated which segments were better aligned with target performance metrics, then proposed audience and campaign optimizations based on the findings.
GOOGLE / Advertising Product Testing
RESEARCH → VALIDATE → SCALEWorked with Google representatives to investigate products suited to each client's circumstances. Launched tests to assess early performance, recommended greater use of products that showed promising results, and identified new approaches intended to improve conversion performance.
STEP 01Define the objective
STEP 02Test targeting or product
STEP 03Review early results
STEP 04Recommend next action
Optimizing Performance During Peak Campaigns
During major promotional periods such as Black Friday, monitored daily performance closely and made measured adjustments to help maximize results within a limited campaign window.
Daily decision-making
Reviewed day-by-day performance and budget pacing to identify when campaign adjustments were warranted.
Learning-aware optimization
Balanced short-term performance opportunities with platform machine-learning conditions, avoiding unnecessary changes that could disrupt campaign learning.
Key takeaway: peak-period optimization requires speed and precision — improving immediate performance while protecting the stability of campaign delivery.
03 / EXPERIENCE
Experience across
marketing & business.
JUN 2024 — MAR 2026
Seoul, South Korea
Seoul, South Korea
MADUP
Performance Marketer / Project Manager · Global Business
Managed performance marketing for two fashion clients across Korean fashion e-commerce and premium women's fashion. Led campaign monitoring, data-led optimization recommendations, client communication, and recurring performance reviews.
MAR 2023 — SEP 2023
New York, USA
New York, USA
InsurTechNY
Marketing Intern
Maintained client databases, supported prospect research and client communications, and helped facilitate business opportunities and a conference focused on distribution and customer engagement.
FEB 2024
Seoul, South Korea
Seoul, South Korea
Kookmin University
B.A. / International Business
Academic background in marketing, consumer behavior, international marketing, business statistics, and management.
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