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Oleksandr TkachenkoOT
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Oleksandr Tkachenko

@oleksandrtkachenko

Senior Data Engineer at Mapal building dbt models and reliable pipelines for SaaS subscription and financial reporting.

Poland
Message

At Mapal, I designed dimensional models and dbt transformation layers for enterprise SaaS reporting, turning operational, billing, and subscription records into curated datasets. I also built Python ingestion workflows and reconciliation checks to support reliable financial analysis.

Previously, I developed data pipelines and warehouse models at Waypoint AI and Relo metrics, and worked on backend data systems at Fuse Universal. I focus on tested, documented data assets, and have coordinated technical delivery, reviewed code, and mentored engineers.

Experience

Work history, roles, and key accomplishments

FU

Software Engineer – Data & Backend Systems

Fuse Universal

Jan 2014 - Sep 2018 (4 years 8 months)

Developed Python and SQL components for backend services and internal data processing workflows supporting an enterprise learning software platform. Maintained scheduled data extraction and processing jobs, improving error handling and recoverability.

Education

Degrees, certifications, and relevant coursework

University of London logoUL

University of London

Master of Computer Science, Computer Science

2014 - 2018

Master of Computer Science degree from the University of London from 2014 to 2018.

Warsaw University of Technology logoWT

Warsaw University of Technology

Bachelor of Science, Computer Science

2010 - 2014

Bachelor of Science in Computer Science from Warsaw University of Technology from 2010 to 2014.

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