Den Baek Email & Phone Number

New York, NY, US

New York City Metropolitan Area

San Francisco Bay Area

• Developed an internal chatbot using Streamlit, Chroma, and fine-tuned GPT-3.5 model (with customer reviews). This initiative empowered the company to make decisions rooted in an authentic customer voice.
• Leveraged scraped data from major beauty retailers, preprocessed it using SparkNLP, and harnessed the LLM model to identify pivotal insights. This enabled the identification of key market trends and optimal targeting.
• Managed the paid marketing with an automated system, consistently achieving a ROAS of 2.0+

San Francisco Bay Area

• Constructed a global SCM platform that offered real-time inventory tracking across 5 regions. This system led to a remarkable -15% cost reduction, achieved by accurate sales forecasting using Linear Regression.
• Implemented an automated system with FastAPI to optimize marketing performance, resulting in a -15% reduction in ad spending across channels and a +150% revenue boost.
• Transitioned the global data warehouse from Redshift to Snowflake, managing 20x more data while slashing costs by -65% and 2x data processing speed for heavy ETL tasks.
• Developed an automated upsell system using Spark streaming, capturing real-time user behavior data to offer personalized coupons or product recommendations. This project increased AOV by 25%.
• Collaborated with the brand development team, driving the launch of 30+ innovative products, informed by rigorous market analysis and consumer insights, and generated 40% of the company's annual revenue.

San Francisco Bay Area

• Constructed a cross-regional data lake system by integrating 5 regions’ data using PySpark and Redshift.
• Developed a reliable ETL system by customizing Airflow with Postgres and Celery for queue management.
• Established an influencer performance tracking system by sourcing data through Facebook API, presented via a Django-based web application.
• Facilitated training for 200+ employees to enhance data literacy and encourage data-driven task execution.

Seoul, South Korea

• Data Platform designing and creating(RDS + REDSHIFT + Airflow + Zeppelin)
• In-memory based ETL(SPARK)
• Create realtime analysis environment(SPARK STREAMING)
• Sharing DATA through Data Chatbot(slack + Aurora)
• Product List optimization(SPARK + ML)

Pangyo

• Did data Analysis based on R, Python, Excel
• Leading small project as PM
• Looking for new insight from competitors

Seoul, South Korea

• This was 4 months project under GBS department
• Participate CRM System project as RA(Research Assistant).
• Draw ERD for CRM system
• Process Analyze & Standardization
• CRM system Screen DesignOperation Consulting
• Deisgn ERD of the system DB

Seoul, South Korea

• Marketing Landing Page management
• Marketing performance analysis
• Responsible for Promotion related Customer service

Master'S Degree, Data Science

Master in data science

Undergraduate, Industrial Engineering