Sergey Zakharov
Fähigkeiten und Kenntnisse
Werdegang
Berufserfahrung von Sergey Zakharov
- Bis heute 6 Jahre und 3 Monate, seit März 2019
Senior Data Scientist / Engineer
X5 Retail Group
Used big data tools like PySpark, Hive and Python's data stack to provide analytical and statistical solutions for a major Russian retail company. Performed A/B testing for the offline retail chain. Built Python containerized backend for a callcenter voice bot using Pytransitions, Python data stack, Gensim etc. Conducted text analytics on customer reviews. Performed code reviews.
- 2 Jahre und 1 Monat, März 2017 - März 2019
Data Science Team Lead
RTS-Tender
Create predictive models to predict users' behavior. User profiling. Develop recommendation systems. Use text mining to find closest texts and to build features for ML models. Acquire and refine data to be used in data mining tasks.
- 2 Jahre und 4 Monate, Dez. 2014 - März 2017
Systems Analyst
ANT-Service
Business analyst for a major project to implement SAP management information systems at a major energy generating company, mostly working with the BI/BW solutions. My role in the project involved: - Creating methodology for the planning/budgeting part of the system - Implementing change requests for budgeting systems, communicating business needs to the development team - Providing business analysis support for scaling implemented systems to sister companies
- 1 Jahr und 1 Monat, Dez. 2013 - Dez. 2014
Systems Analyst
STG
Systems Analyst for a project to implement costs planning and reporting for a state fund. - Provided documentation to support the system - Created forms for budgets and reports - Contacted the client's employees to translate business needs to the development team
- 2 Jahre und 6 Monate, Mai 2011 - Okt. 2013
Systems Analyst
BDO Russia
Systems Analyst for a project to implement budgeting system for a major company operating in oil&gas sector. - Created methodology for planning and reporting on core activities, revenues and production costs - Tested the budgets and reports together with the future users - Provided communications with the company's executives responsible for planning business activities
- 3 Jahre und 8 Monate, Sep. 2007 - Apr. 2011
Senior Consultant
ADI, RBS
Built financial models. Conducted calculations for planning. Designed reports for planning and reporting.
- 3 Jahre und 4 Monate, Mai 2004 - Aug. 2007
Business Analyst
Medial, Omsk Bacon
- Built financial models - Provided analytical reports - Created production and sales optimization models
Ausbildung von Sergey Zakharov
- 2 Monate, Sep. 2017 - Okt. 2017
Python: Advanced Course (professional development course)
Higher School of Economics
- 2 Monate, Apr. 2017 - Mai 2017
Text Mining (professional development course)
Higher School of Economics
- 1 Jahr, Apr. 2016 - März 2017
Machine Learning
Udacity (online program)
- Classification - Regression - Clustering - Reinforcement Learning (Q-Learning) - Machine Learning for Trading
- 4 Jahre und 10 Monate, Sep. 1997 - Juni 2002
Economics
Institute of Management and Economics of Omsk State Transport University
World Economics
Sprachen
Russisch
Muttersprache
Englisch
Fließend
Französisch
Grundlagen
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