Olha K. Python Engineer, Data Quality, ML

Experience

Data Quality Automation Engineer, Amazon e-Commerce Aggregator

The Amazon aggregator, one of the leaders in buying up and scaling third-party merchants selling on Amazon and other marketplace platforms

February 2021 - Present time

Responsibilities:

• Analyse and test big volumes of data from different sources: API, Web -scrapers etc.
• Analyse business requirements and communicate with stakeholders to identify key points.
• Create test documentation (Test Plans, Test Reports etc.).
• Manual check for new features, bug fixes, changes.
• Expand and maintain Data Testing Framework with new automated Python scripts for testing data quality (completeness,  accuracy, uniqueness etc.) and the outcomes of data transformation activities.
• Prepare Airflow DAGs for scheduled running of automation test tasks.
• Monitoring tests results.
• Refactor and support automation tests.
• Prepare Sisense dashboards for monitoring results of automated tests. 

Technologies:
Python3, SQL, PostgreSQL, Allure Framework, Sisense, AWS (Amazon S3, Amazon Redshift), Snowflake, AirFlow, Git, GitHub, Jira, CircleCI

Maternity Leave

2019-2021

Algorithm Developer, Software Technologies Inc.

April 2011 - October 2018 

Description: Medical imaging, photo, geospatial industries, Automotive. 
Responsibilities:

• Data Validation for Product Management Department
• Development of algorithms for professional color calibration and profiling software (QUBYX PerfectLum, QUBYX PressProof and other OEM products):
  - improvement of algorithms for display calibration;
  - development of methodologies and algorithms for creation of CLUT-based  ICC profiles for display, printer (CMYK, RGB, monochrome), camera, scanner; 
  - algorithm development for other helper tools (verification of sensor measurements during printer profiling, calculation of devices gamut intersection etc.).
• Automotive - for in-car display environment for e.solutions (Audi) Color matching within a set of displays 
• Development of methodology and models for calibration of colorimeter (QUBYX MicroEye Sensor Module).
• Implementation of all the developed algorithms in MATLAB.
• Testing of implemented algorithms, performance of experiments.  
• Cooperation with the team to help embed new algorithms into the product.

Lecturer at National University

September 2006 - June 2013
Responsibilities:

• Conducting of lectures and practices for courses "Numerical Methods", "Numerical Methods of Mathematical Physics", "Mathematical and Statistical Methods of Social Processes Analysis".
• Preparation of the lecture materials, helper documents and tasks for practices (4 published manuals).
• Bachelors of scientific works supervision.

Senior Researcher at National University

January 2007 - December 2009
Responsibilities:

• Research and development of mathematical models, methods, and algorithms for computer modeling of 2D and 3D boundary value and initial boundary value problems for partial differential equations.
• Implementation of the application program package for computer modeling of dynamic problems in MATLAB. 
• Performing numerical experiments and analysis of the obtained results.
• Writing of monthly and annual reports.

Mathematical Modeling and Numerical Methods, Postgraduate
State Technological University
October 2007 - January 2011

Master of Computer Science
National University 
September 2000 - June 2006

Courses, Certificates

Machine Learning, ml-class.org - online course on Coursera created by Stanford University
April 2012 - July 2012

Course included methods of supervised and unsupervised learning: regression, neural networks, support vector machines, clustering etc.