Profilbild von Sergey Fomichev Senior Data Scientist aus Warschau

Sergey Fomichev

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Letztes Update: 04.03.2024

Senior Data Scientist

Abschluss: MSc. Applied Mathematics
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: englisch (verhandlungssicher)

Schlagwörter

Machine Learning Airflow Amazon Web Services Computer Vision Personalisierung E-Commerce Apache Hadoop Apache Hive Python Natural Language Processing + 16 weitere Schlagwörter anzeigen

Dateianlagen

CV-Sergey-Fomichev_270223.pdf

Skills

Technical skills:
- Programming Languages: Python, SQL, PL/SQL
- Deep Learning: PyTorch, Keras, TensorFlow
- Databases: Oracle, Postgres
- Hadoop: Hive, Apache Spark, Impala
- NoSQL: Redis, MongoDB
- Other: AWS, Docker , Airflow, Elasticsearch, bash scripting, Linux, git
- Minor programming skills: R, C, C++, Scala, HTML/CSS/JS 

Interests:
- Machine Learning
- Recommendation systems
- Personalization
- Search relevance
- Natural Language processing

Over 10 years' experience in Data Science, Big Data and Business Intelligence. I have worked on innovative projects in e-commerce, retail, telecommunications. I enjoy solving complex analytical problems and developing smart services based on AI and machine learning. I am proud that my work helps to improve the shopping experience of millions of people.

Projekthistorie

01/2020 - bis jetzt
Data Science Team Lead (Remote)
Sportmaster (Konsumgüter und Handel, >10.000 Mitarbeiter)

Sportmaster is one of the three largest sporting goods retailers in Europe with 210 million offline visitors a year and a huge online customer base.

  • Working on improving search relevance and increasing financial result of the search engine using ML approaches
  • Developed and implemented ML-based autosuggest API (phrases, categories, items)
  • Developed and implemented automated pipeline of dataset labeling for assessing search relevance using crowdsourcing platform
  • Developed and implemented item ranking personalization in catalog branches on site and mobile app

01/2018 - 02/2019
Senior Data Scientist
Sportmaster (Konsumgüter und Handel, >10.000 Mitarbeiter)

  • Developed and implemented system for optimizing marketing communications using uplift models
  • Developed and implemented recommender systems based on Deep Learning approaches
  • Implemented pipeline for preparing product embeddings based on purchases, text descriptions, images
  • Implemented pipeline for extracting product tags using CV, NLP (NER)
  • Conducted A/B tests before implementations

02/2017 - 12/2017
Data Scientist
MegaFon (Telekommunikation, >10.000 Mitarbeiter)

MegaFon is the second largest mobile operator in Russia with 75.4 million customers.

Worked on solving business problems and implementing prototypes:

  • Improved the Churn prediction model
  • Developed predictive model for client gender
  • Developed classification model for Down-sale prediction
  • Prepared various triggers to stimulate top up, prevent the churn

01/2016 - 02/2017
Data Scientist
Aeroflot (Transport und Logistik, >10.000 Mitarbeiter)

Aeroflot (the largest airline in Russia).

  • Unified client profile model (UCP) - comparison of user data from different sources (Oracle DWH, GA, Siebel, Check-In system, social networks) using near-duplicate detection algorithms
  • Client LTV forecasting
  • RFM segmentation
  • Developed and implemented recommender system for email personalization

10/2012 - 01/2016
Senior SAP BI Consultant
ID - Management Technologies (Energie, Wasser und Umwelt, 250-500 Mitarbeiter)

SAP BI implementation projects in Federal Grid Company (operator and manager of unified electricity transmission grid system in Russia), MOESK (major distribution electric grid company in Russia)

  • Implemented wide range of management reports for desktop and mobile devices to support decision-making in investment activities
  • Reporting, Data warehouse modeling (SAP BW), ETL, ABAP development

12/2010 - 10/2012
Senior SAP BI Consultant
TeamIdea (Konsumgüter und Handel, 50-250 Mitarbeiter)

SAP BI implementation projects in FINN FLARE, Incity, SELA (large Fashion Retail companies in Russia), Euroset (large mobile phone retailer)

  • Implemented management reports and KPI dashboards for managers of different levels, Data warehouse modeling (SAP BW), ETL

Reisebereitschaft

Nur Remote verfügbar

Sonstige Angaben

www.linkedin.com/in/sfomichev
Profilbild von Sergey Fomichev Senior Data Scientist aus Warschau Senior Data Scientist
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