Wonjoon Lee
Seoul,Korea
Summary
Strategic marketing and communications professional with three years of experience at TikTok, specialising in transforming complex content requirements into actionable insights. Proven success in digital marketing and regulatory translation from a pharmaceutical internship. Holds a degree in Life Sciences Communication and Digital Studies from the University of Wisconsin-Madison, ready to contribute an analytical approach to a UK brand or content team. Eligible to work in the UK without sponsorship.
Overview
1
1
Certification
5
5
years of professional experience
Work History
Search Operation Evaluation Quality Assurance
TikTok
Seoul
06.2025 - Current
- Content Safety & Mitigation: Engineered a safer search environment by developing and implementing evaluation logic for "ideal and safe" word recommendations, successfully mitigating user exposure to harmful content.
- Conducted quality inspections of evaluated data and specialist tasks; identified and categorised algorithmic "bad cases" (edge cases) to provide actionable feedback for model retraining.
- Algorithm & Search Optimization: Optimized TikTok's search recommendation algorithm by refining search terms and word suggestions, enhancing query relevance and accuracy for millions of users in Korean and global markets.
- Spearheaded training and policy alignment for in-house evaluation specialists, ensuring adherence to complex, evolving technical standard documents.
- Served as primary contact for standard document clarifications, translating technical search requirements into clear, actionable guidelines for operational team.
- Supported agile project initiatives by collaborating with cross-functional teams to evaluate search projects.: Demonstrate cross-functional agility by contributing to high-priority, ad-hoc search evaluation projects outside core responsibilities to meet shifting business demands.
- Performance Excellence: Selected as a High Performer (Q1 2026) within the South Korea Search Operations team and awarded a spot bonus for exceptional data quality and evaluation velocity.
Search Operation Evaluation Specialist
TikTok
Seoul
07.2023 - 06.2025
- Query Intent Classification: Analyzed user search needs through query behavior and advanced tooling, sorting complex user intents into precise classification requirements to improve search mapping.
- DCG Search Benchmarking: Conducted weekly and bimonthly Discounted Cumulative Gain (DCG) assessments, measuring search relevance and algorithm quality to align with standard evaluation criteria.
- Feedback Loop & Policy Reform: Aggregated and analyzed search "bad cases," delivering data-driven feedback and policy suggestions directly to engineering and product teams to refine the retrieval engine.
- Performance Excellence: Selected as a High Performer (Q2 2024) within the South Korea Search Operations team and awarded a spot bonus for exceptional data quality and evaluation velocity.
Marketing Intern
ABNOBA KOREA PHARMACEUTICAL
Seoul
08.2021 - 11.2021
- Content & Social Media Strategy: Designed and executed digital marketing content across social media to promote specialized therapeutics to medical institutions and pharmacies.
- B2B Collateral: Developed compelling presentations and promotional materials for executive teams, effectively showcasing product pipelines to attract potential medical and pharmaceutical business partners.
- Regulatory Translation: Translated clinical research papers from English and German to Korean, enabling timely regulatory approvals from the Ministry of Food and Drug Safety (MFDS).
Education
Bachelor of Science - Life Sciences Communication, Digital Studies
University of Wisconsin - Madison
Madison, WI12-2022
Skills
- Quality Assurance
- Data quality control
- Algorithm evaluation
- Query classification
- Data analysis
- Project coordination
- Stakeholder communication
- MS Office Suite
Certification
- Google Digital Marketing & E-commerce Professional Certificate
- Google Project Management Professional Certificate
- Google Advanced Data Analytics Professional Certificate
- Google AI Essentials Specialization Certificate
- Claude Academy: Claude 101
- Claude Academy: AI capabilities and limitations
- Claude Academy: AI Fluency: Framework and foundations
Timeline
Search Operation Evaluation Quality Assurance
TikTok
06.2025 - Current
Search Operation Evaluation Specialist
TikTok
07.2023 - 06.2025
Marketing Intern
ABNOBA KOREA PHARMACEUTICAL
08.2021 - 11.2021
Bachelor of Science - Life Sciences Communication, Digital Studies
University of Wisconsin - Madison