Study price
Session with mentor
210$/ hour
5 sessions pack -5%
200$/ hour
10 sessions pack -10%
190$/ hour
15 minute test
Free
1 week messaging
195$
Remote project review
Depends on complexity
Mark Eltsefon
Staff Data Scientist — Meta
33
Sessions completeI've been transforming data into meaningful and tangible insights during the last 6 years. I was lucky enough to challenge myself in myriad industries : insurance , e-comm , social networks, edtech, gamedev , banking. I have interviewed dozens of people and have been an interviewee even more. I have lived and worked in 4 countries : Israel , Russia, Germany and Ireland and my list is not finished!
🤝 Can help with
- Let's analyze the current skills and create a roadmap
- We'll adjust CV, create a cover letter, and determine what to emphasize — including for jobs abroad.
- Mock interviews
- We'll prepare for all stages of the interview
- We'll understand why A/B testing is needed and how to apply it correctly.
- Advanced A/B testing
- We'll go over what kinds of metrics exist, how to build a metrics hierarchy, and how to align business metrics with DS metrics.
💻 Work experience
April 2024 — until now
Meta — Staff data scientist
October 2021 — until now
TikTok — Senior Data Scientist
January 2023 — April 2024
Gelato — Data Science team lead
May 2020 — September 2021
Jam City — Principal product analyst
July 2016 — April 2020
Home credit and Finance bank — DS team lead