Oleksandr S.

Oleksandr S.

Senior Data Engineer

Krakow, Poland
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About Me

Oleksandr is a Senior Data Engineer with 8+ years of hands-on experience in data processing, prediction modelling and classification, backend development, deployment and maintenance of microservices. He is familiar with data model design - schema, scalability, immutability and idempotency. He implements data solutions that drive business value and customer satisfaction on multiple projects for clients.

Work history

UpStack
UpStack
Senior Data Engineer
2022 - Present (2 years)
Remote
  • Build and improve databases, acquire data, ETL/ELT, big data pipelines and deploy cloud services on projects.

  • Administer infrastructure solutions to improve data models, increase data accessibility and foster data-driven solutions for clients.

  • Implement monitoring solutions to ensure data integrity - working closely with engineers, product managers and other stakeholders.

Inuits
Inuits
Lead Data Engineer
2019 - Present (5 years)
Krakow, Poland
  • Build, implement, deploy and maintain stable, secure and scalable data engineering solutions on the Inuits platform.

  • Maintain and monitor the data warehouse, data modelling and data ingestion solutions on the new data platform.

  • Designed and executed custom APIs and microservices on the solution.

Avantida
Avantida
Data Engineer
2018 - 2019 (1 year)
Krakow, Poland
  • Designed and implemented a new solution to migrate Avantida's existing on-premise data platform to AWS.

  • Translated functional requirements and processes into technical specifications for the development of data warehouses.

  • Developed, deployed, and maintained data pipelines and reporting system on the Avantida platform.

StrikeTech
StrikeTech
Software Engineer
2018 - 2018
Krakow, Poland
  • Designed and implemented new web applications and delivered a data platform on the project.

  • Worked on the data warehouse on the platform - implementing the web service infrastructure and supporting technologies.

  • Collaborated with other engineers to ensure the new data infrastructure scalabily meets StrikeTech's business needs.

Contentful
Contentful
Data Engineer
2017 - 2018 (1 year)
Berlin, Germany
  • Developed BI services and recommended software improvements to enhance functionalities and optimizations.

  • Collected data from multiple sources, built event-based systems and documented the data environment on the project.

  • Worked on 3rd-party services and integrations for Contentful.

StrikeAd by Sizmek
StrikeAd by Sizmek
Data Engineer
2014 - 2017 (3 years)
Krakow, Poland
  • Designed, built, tested and maintained the custom ETL, data processing and prediction systems within StrikeAd.

  • Provided solutions to complex technical issues - handling API integrations, investigating and debugging defects.

  • Identified and leveraged modern tools to stay current on data solutions, technologies and services on solutions.

StrikeAd by Sizmek
StrikeAd by Sizmek
Automation Test Engineer
2014 - 2014
Kyiv, Ukraine
  • Developed and executed software automation test frameworks and strategies - planning test schedules per project scope.

  • Actively participated in white box testing, code reviews and integration tests on the project.

  • Worked with different Big Data tools to enhance performance on different sets of data for StrikeAd.

Krusche and Co.
Krusche and Co.
QA Manager
2012 - 2013 (1 year)
Kyiv, Ukraine
  • Led and engaged stakeholders to discuss solutions, QA metrics and performance on 4 projects within K&C.

  • Conducted quality assessments tasks and supervised testing activities to ensure quality deliverables on solutions.

  • Built, managed and executed complex, manual and automation test plans and solutions across projects.

 IntroPro
IntroPro
Automation Test Engineer
2012 - 2014 (2 years)
Kyiv, Ukraine
  • Created and implemented test strategies, plans and cases on multiple automation tests within IntroPro.

  • Established test automation processes on solutions - evaluating and planning the test automation roadmap.

  • Identified defects and bugs, worked on resolutions, monitored bug resolution efforts and tracked successes.

Portfolio

Data Engineer - Audigent
Data Engineer - Audigent

Audigent is a next-gen data management platform containing exclusive content-consuming audiences across mobile, desktop and social platforms. Worked on delivering data solutions to help Audigent analyze internet traffic, create audience segments and improve audience identity.

Data Engineer - Julius Influencer Platform
Data Engineer - Julius Influencer Platform

Worked on delivering a new reporting and data analytics platform on the Julius influencer marketing software - designing and creating the reporting platform, architecting the data model, audience analytics platform, machine learning models and ETL processes.

Data Engineer - Analytics and Prediction Platform (Nokia)
Data Engineer - Analytics and Prediction Platform (Nokia)

Built and deployed a new analytics and prediction platform that shows the current state of mobile networks and predicts possible failures. The platform receives metrics from mobile network equipment, processes them and shows results to users on the dashboard.

Education

Master's Degree in Application Software Development
Master's Degree in Application Software Development
National Aviation Universit
2005 - 2007 (2 years)
Bachelor's Degree in Computer Science
Bachelor's Degree in Computer Science
National Aviation Universit
2001 - 2005 (4 years)