Daniel Lee

About

I am a serial entrepreneur who has been running multiple EdTech businesses since 2021. Prior to 2021, I was a data scientist at a consultancy firm in D.C., worked at a startup (acquired by PayPal) and Google. 𝗠𝘆 𝗩𝗲𝗻𝘁𝘂𝗿𝗲𝘀: 1/ DataInterview.com → Interview prep platform for data, ML, AI roles 2/ JoinAISchool.com → Tailored courses and workshops for AI Engineering & upskilling 3/ DataScienceSchool.com → Premium courses for those upskilling in data My new venture includes AIAgency.co, a consultancy firm specialising in AI, software and automation. As an AI Tech Lead, I build and deploy a custom AI software and agent in 90 days or less. 𝗙𝗼𝗿 𝗰𝗼𝗻𝘁𝗮𝗰𝘁: For Interview Coaching: [email protected] For AI Consultancy: [email protected]

Experience

• AI Engineer at JoinAI
  

  Helping professionals and graduates upskill in AI with workshops like "Build Production-Grade AI Engineering App."

• Founder at DataInterview.com
  

  Running an EdTech startup focused on interview prep in data, ML and AI roles. Helped 200K+ clients with interview prep since its founding in 2021. I designed and coded a full-stack web app with a real-time coding engine, built courses, and marketed them on social media.

• Data Scientist at PayPal
  

  • [Fraud Prevention] Delivered a fraud detection model that prevented $2.7 million of fraudulent credit card applications of a large U.S. bank in Q3'19. • [Fraud Prevention] Delivered a spam detection model that removed 10K+ spammers on a job platform in Q4'18.

• Data Scientist at Google
  

  • [Forecasting] Delivered a 5-year forecasting model that improved business forecasting of Google’s network equipment CapEx. • [Forecasting] Delivered a Covid confirmed-case model that Google's HR team used to budget a Covid sick-leave fund for Google's 100K+ contractors. • [Anomaly Detection] Designed an anomaly detection tool that served 4+ finance teams in Google Ads. • [Revenue Analytics] Created a Python tool that automated a mix-volume-rate analysis for Google’s Pixel team, providing insights on Pixel's profit & losses and saving 2 hours of manual work per month. • [AB Testing] Designed an AB test on weekly emails that improved user engagement on Google's Grasshopper app - a free learning platform for aspiring coders.

• Data Scientist at Simility, A PayPal Service
  

  Leveraged machine learning to resolve fraud problems.