YouTeam Logo

Summary

Expertise

Project Highlights

Education

Agency

OY

English:

Upper Intermediate

Oleh Y.

vetted by Youteam

Vetted by YouTeam

Ukraine

UTC +02:00

Ukraine/Kyiv

English:

Upper Intermediate

Senior Machine Learning Engineer, Data Scientist

I have fundamental knowledge in math, physics, hydrodynamics, theory of probability, optimization, math statistic, math modeling, graff's theory, machine learning. I can create ideas and release them, know how to write on Python, R. I used such libraries as Numpy, Scipy, Pandas, Scikitlearn, Statsmodels, Tensorflow, PyTorch, BigARTM, Gensim, BERT, Matplotlib. I have solved the task in regression, classification, clustering, NLP.

Want to hire this engineer?

Check if Oleh is available

Expertise

Years of commercial development experience

15 years of experience

Core technologies

Python Numpy 5 years
Python SciPy 5 years
pandas 6 years
TensorFlow 6 years
PyTorch 6 years
OpenCV 6 years

Other technologies

Keras

Project Highlights

icon
Senior Machine Learning/Data Scientist

Real time bidding

The task (Real-time Bidding) was to predict the bet to the online auction of SSP. The problem was in the speed of the model inference and predicting bets when do not reduce the winner cases. Hard load system. The Model in production and Increased profit by 10%

Responsibilities & achievements

PyTorch
icon
Senior Machine Learning/Data Scientist

Fraud detection

Fraud detection model with a low time lags and use the behavior of Publishers. CatBoost is used. Active learning to get new labels of Fraud on each iteration. PoC

Responsibilities & achievements

PyTorch
icon
Senior Machine Learning/Data Scientist

Traffic optimization

Traffic optimization is the on-line model of a relevant traffic classifier (‘Good fo DSP). Model in production. Improve traffic by 5% CatBoost is used.

Responsibilities & achievements

PyTorch
icon
Senior Machine Learning/Data Scientist

Signal analysis

The task was to classify gases using the electric signals & wavelet transform. Upgrade of the working model. AWS solution

Responsibilities & achievements

Python
icon
Senior Machine Learning/Data Scientist

Image classification

The task was to classify different statuses of the broadcasting. The problem was in a few data set. I solved it by active learning way labeling of new data. AWS solution, Sagemarket for production. Transfer learning. The accuracy on the test set was 0.9.

Responsibilities & achievements

OpenCV
TensorFlow
Keras
icon
Senior Machine Learning/Data Scientist

Video classification system

The task was to detect the different behaviors on the stairs, needs to insurance tasks. The problem was in a few data set. I solved it by separating the task into two sub-tasks, first to extract features from images and second to use these features to predict the behavior. The extraction was solved by CNN which was trained by the images to see the important features and after then I feed RNN this feature to predict the behavior. This way I've could use my laptop for this task, only 16 Gb RAM. The accuracy on the test video set was 0.9

Responsibilities & achievements

OpenCV
TensorFlow
Keras
icon
Senior Machine Learning/Data Scientist

Recommender System

ask was to get the most possible text recommendation for different people. The initial data were different states of activity monitor and environment data. Solved by factorization machine method.

Responsibilities & achievements

Python
icon
Senior Machine Learning/Data Scientist

Predict the winner in horse's racing

First I’ve done Outlier detection. Next, I was working on a feature extraction problem and feature engineer task. Then I used clustering to build the different models to different clusters. And last I've tried to build the boosting model and added something like a factorization machine to the model. In my work I use Numpy lib and write the optimization code from start to end, in the last cases I use the TensorFlow and PyTorch. In general, I've made the improvement to an accuracy of 2%. Model in production

Responsibilities & achievements

TensorFlow
PyTorch

Education

Higher education in Computer Science

Agency

Engineering company agency #1300

400+

GMT+2

Lviv, Kyiv, Odesa, Kharkiv, Ivano-Frankivsk, Krakov, Berlin

Core Expertise

Ajax
Apache
AWS
Azure
Big Data Architects
C#
C++
Elixir
iBeacon
Java
JIRA
.NET
Node.js
OpenGL
Oracle
PostgreSQL
Python
React.js
React Native
Ruby
Ruby on Rails
Scala
Selenium
Sinatra
SQL Server
Bootstrap
Cucumber
Data Modeling
Geographic Information System (GIS)
Geospatial
NoSQL
Redmine
Swift
Angular 2x
MS SQL Server
RESTful API
Docker
MariaDB
Azure Web
iOS SDK
Android GCC
Hadoop
.NET Core
AWS Lambda

Industries

Logistics & Transportation, Banking & Finance, Construction & Real estate, Internet & Telecom, Data Science & Machine Learning, FMCG, Big Data, Automotive, Internet of Things

Want to hire this engineer?

Check if Oleh is available