Sergey Medintsev

Profile

I'm a team leader with 13+ years of experience in finance, marketing, and food delivery. I'm proficient in statistical analysis, data visualization, and machine learning using Python, SQL, and DataLens. I'm a creative thinker who can communicate complex solutions to diverse audiences, and I excel at writing clear and concise reports.

Experience

Yandex

Remote

Yandex Eats: Team leader of Data Analysts

May 2020 - Present

  • identified and solved problems with the couriers' mobile application and evaluated the changes, solving issues for about 10% of couriers.
  • initiated cost-saving projects such as developing ML models for predicting courier churn and implementing a multi-delivery project, resulting in reduced order costs of more than $20,000 per month.
  • created flexible dashboards for colleagues to explore growth opportunities. They're used by decades of managers, developers, and analysts.
  • built a hiring forecast and metrics system for acquiring and retaining couriers, reducing hiring costs by half.
  • to improve business efficiency, we conducted experiments regularly, including A/B tests and switchback experiments.
  • actively supported and developed my team, including mentoring junior analysts, conducting technical interviews, and creating team branding and gifts.
  • reduced analytical query execution time by 10x by optimizing data storage infrastructure. Enabled faster business insights.

Yandex Market: Data Analyst

Sep 2016 — Apr 2020

  • I developed a mathematical model to balance income level and store attractiveness, which was implemented in the production version of Yandex.Market.
  • In the SEO department, I increased organic traffic to Yandex Market by 20% through developing new metrics, conducting experiments with Google Search Engine and collecting data from various sources. My work was highly appreciated and I received an award for it.

SkillFactory

Remote

Data Science Teacher

2020 - 2021

  • trained about 100 students in the Data Science program
  • organized hackathons & meetings on data analysis topics

Moscow, Russia

Previous experience

Oct 2010 - Aug 2016

  • Biotechnology company BIOCAD (Sep 2013 — Aug 2016): As a business analyst, I led and implemented primary data management, automation, and mobile app development projects for a biotechnology company, earning two best employee awards.
  • Bank VTB (Jul 2012 — Sep 2013): As a chief specialist, I created and updated the business plan of the bank using mathematical models and statistics from large data sets.
  • Bank Vozrozhdenie (Oct 2010 — Jul 2012): As a specialist, I analyzed and optimized the data collection and processing techniques of the department, automated some routine actions, and developed a tool for working with the public procurement website that saved 12 man-hours per week.

Education

BSc & MSc in Fundamental Science: Technical Physics

Moscow Bauman State Technical University

2006 - 2012

Theme of diploma: Modeling of thermal and optical effects in DNA amplifier.

Addition education

I love studying, so I took a lot of courses, so as not to take up space, I put the list of courses on a special page https://sergey.medintsev.com/extra/courses
photo of me

Skills

    • Programming skills
    • SQL
    • YQL
    • Python
    • bash
      Math
    • statistics and probability theory
    • algebra
    • mathematical analysis
    • discrete mathematics
      Analytical and Communication
    • Critical thinking
    • Reasonable recommendations
    • Uncomplicated reporting
      Leadership
    • Motivation
    • Task Distribution
    • Deadline Management

Languages

  • Russian
    Native
  • English
    B2

Diplomas

  • Master of Physics. Moscow State Technical University (2012)

Interests