GROWTH MARKETING LEADER · FINTECH

Yoonseung Park

I build marketing systems that drive measurable revenue — not just campaigns that ship. 13+ years across KakaoPay and Samsung Card, hands-on with SQL, experimentation, and AI.

13+
Years in Marketing
₩750M
Revenue Driven
128%
Annual KPI

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ABOUT

Most people are either a strategist or an analyst. I'm both — and I build with AI on top.

Growth marketing leader with 13+ years across Korea's top financial brands — KakaoPay and Samsung Card. I've launched a brand from zero, run award-winning campaigns, rebuilt targeting with data, pioneered MyData personalization that's now adopted company-wide, and shipped AI automation that turns weeks of analysis into days. I bridge marketing strategy and technical execution with hands-on SQL, Python, and agentic AI.

Growth CRM / Lifecycle Experimentation Incrementality Segmentation LTV / Scoring MyData SQL Python AI Automation Partnerships Brand 0→1 Fintech / Payments

WHAT I DO

01
Growth & Lifecycle

Acquisition → activation → cross-sell → retention, run as always-on, measurable automation.

02
Experimentation & Measurement

A/B/n roadmaps, incrementality, and ROI / unit-economics models that drive real budget decisions.

03
Data & SQL

Hands-on segmentation, LTV scoring, and profit tracking — plus a SQL curriculum that upskilled my team.

04
AI Automation

Python pipelines and agentic AI (Claude Code) for modeling, reporting, and rapid experiments.

05
Strategic Partnerships

Co-marketing and joint data activations with Google, Baemin, and Coupang Eats — plus luxury brand partnerships.

06
Brand Building 0→1

Conceived and launched Samsung Card 'Young Lab' end-to-end — an award-winning brand from scratch.

EXPERIENCE

2025–Present
KakaoPay
Senior Manager, Data Marketing — Strategic Merchants & Partnerships
  • Secured ₩750M incentive revenue by rebuilding targeting (Benefit Sensitivity + Context Behavior)
  • 128% annual cross-sell KPI (36,236 conversions) via a year-long A/B experimentation roadmap
  • Designed always-on lifecycle programs with MyData-powered personalization
  • Resolved cross-functional blockers (security filters, reward logic, data-access governance) to protect execution speed
  • Co-marketing & joint data activations with Google, Baemin, and Coupang Eats
  • Adopted agentic AI (Claude Code) end-to-end — compressing weeks of work into days
2021–2025
KakaoPay
Senior Manager, CRM Marketing & Business Strategy
  • Pioneered the MyData marketing experiment (late 2024) — validated as a high-leverage signal, now adopted company-wide
  • Built LTV / scoring logic to prioritize high-value users and allocate benefits efficiently
  • Created SQL-based profit / ROI tracking models to inform offer & budget decisions
  • Institutionalized experiment-led execution (A/B/n planning, readouts, learnings)
2013–2021
Samsung Card
Digital Marketing & Service Strategy Manager · 8 yrs 8 mos · 4 teams
Marketing Strategy — 'Young Lab' 0→1 launch
  • Conceived & launched the brand end-to-end (RFP, dev oversight, go-to-market)
  • Won Web Award Korea Grand Prize & Samsung Card CEO Award (2014); led an overseas brand expedition (Australia Gold Coast Marathon)
Brand Marketing — scaling Young Lab
  • Ran 5–10 monthly promotions; pioneered influencer / reward-app / GDN channels with ROI frameworks
  • Led 4 website rebuilds (responsive migration); 15+ partnerships (Disney, Socar, Com2uS, CGV, Tourism Australia)
Premium Marketing — VVIP / VIP
  • Designed lifecycle campaigns for high-net-worth segments; SQL behavioral targeting to lift conversion
Customer Marketing — partnerships & PM
  • Managed luxury hotel / restaurant / global-retail partnerships & co-marketing
  • Led 3 IT projects as PM (dining reservation platform, AI chatbot, website system) — all on time
2008–2012
University of York, UK
BSc (Hons) Economics & Finance · GPA 4.0/4.5
  • Worked full-time at Starbucks (UK) for 3 years throughout university — discipline under sustained workload

AWARDS & CREDENTIALS

Web Award Korea — Grand Prize (2014)
Samsung Card CEO Award (2014)
CFA Level I · Passed
OPIc · Advanced Low
BSc Economics & Finance · Univ. of York, GPA 4.0/4.5

HOW I WORK WITH AI

I don't just use AI — I build systems with it.

Experimentation Design

AI-assisted experiment design, copy variants, and statistical analysis for A/B programs

SQL Enablement

Built curriculum and templates with AI to raise team analytics autonomy

Campaign Automation

Python pipelines for targeting, scheduling, and performance reporting at scale

Performance Reporting

Automated dashboards and insight generation replacing manual weekly reports

ClaudeGPT-4oGeminiPythonSQLpandasFastAPIStreamlit

BEYOND THE DAY JOB — THINGS I'VE BUILT

Algorithmic Trading Systems

Real-time pipelines integrating 3 financial APIs (KIS, Kiwoom, Upbit) for signal detection and execution.

Marketing Automation Pipelines

End-to-end Python (pandas, FastAPI, Streamlit) for campaign performance reporting and detection.

Agentic AI Workflows

Production workflows with Claude Code, GPT-4o, and Gemini that 10× analytical output.

Let's connect.

jpark7900@gmail.com
LinkedIn ↗ Resume PDF ↗