Hansung Kang - Senior Data Analyst

Korea, Republic of

Experience

Jan 2024 - Oct 2024

10 months

Korea, Republic of

Built a churn-prevention model by developing a customer-service chatbot that analyzed historical interaction logs and offered personalized retention packages addressing key complaints.
Designed multi-turn conversational flows for the chatbot, integrating error recovery and state dependency handling to simulate realistic user–assistant interactions.
Applied Generative AI and prompt engineering to produce actionable marketing insights and automated campaign reporting.
Delivered C-level insights by linking chatbot outputs and BigQuery–Power BI pipelines with brand KPIs (CTR, engagement, retention).

Jan 2022 - Oct 2023

1 year 10 months

Malaysia

Conducted data labeling, annotation QA, and content evaluation for large-scale AI model training projects.
Reviewed labeled data for accuracy, consistency, and compliance with linguistic and contextual guidelines.
Supported multiple data verticals — text, image, and social content — across English and Korean datasets.

Feb 2020 - Feb 2021

1 year 1 month

Malaysia

Worked on search relevance and AI moderation projects supporting global tech clients.
Evaluated AI search result quality and applied structured feedback to improve model output relevance.
Documented recurring annotation inconsistencies and proposed rule clarifications to labeling teams.

Ai Data Operations: Data Annotation, Qa Review, Llm Evaluation, Prompt Testing, Linguistic Qa, Content Moderation
Domains: Ai Data Quality, Generative Ai Evaluation, Nlp, Data Labeling Workflow Optimization, Sentiment & Intent Analysis