Maksym Tsuman

Experience

• 

  Marshal Office of Lubelskie Voivodeship

  Jun 2014 - Jul 2014

  Internship in Department of Foreign Cooperation
• 

  Omnes Gentes

  Dec 2014 - May 2015

  Volunteer

  Creating events for Erasmus students who come from all over the world.

• 

  Fundacja Centrum Rozwoju Lokalnego

  Mar 2015 - Jun 2015

  Volunteer

  Assistance under project’s implementation co-financed by EU Funds.

• 

  Solid Logistics

  Mar 2016 - Oct 2016

  Sea freight forwarder assistant

  Managing of export procedure of various goods from China to Germany / Poland and updating database.

• 

  CMR (Centrum Monitorowania Rynku)

  Feb 2018 - Nov 2019

  Data Analyst

  - Helped increase sales and distribution of key players in the FMCG market by performing dedicated sales analysis such as purchasing behavior or stores grouping- Presented outcomes in front of the stakeholders- Maintained receipts transactional data quality- Technologies stack: Python (Pandas, NumPy), Jupyter Notebook, Excel, VBA, Tableau, Bash

• 

  Allegro

  Nov 2019 - Mar 2021

  - Conducted onboarding of newcomers- Organised workshops for superior understanding of our analytical solutions by stakeholders - Developed various attribution models that influenced the direction and growth of sales - Provisioned and maintained ETL pipelines- Technologies stack: Python (PySpark, Pandas, NumPy, Matplotlib, etc.), Airflow, Hive, Alation, BigQuery, HDFS, Jupyter Notebook, Bitbucket, Tableau, Data Studio

  • Data Analyst

    Oct 2020 - Mar 2021

  • Junior Data Analyst

    Nov 2019 - Oct 2020
• 

  ING

  Apr 2021 - Aug 2022

  Expert - Data Scientist

  - Performed overlap & lookback analysis on transaction data that impacted critical department decisions - Developed AML scenarios and statistical dashboards for better alerts handling- Processed Functional & Risk User Acceptance Tests to assess new or double-check existing AML controls- Technologies stack: JupyterLab, Python (PySpark, Pandas, Plotly, Matplotlib), Superset - along with Oracle SQL Developer, Oracle FCC Studio, Amundsen, HDFS, Azure Repos, Bash

• 

  Xebia

  Aug 2022 - now

  Data Engineer

  • Empowered stakeholders with efficient data management by building, maintaining, and provisioning ETL pipelines using Python and Spark on AWS services.• Implemented Python scripts and Spark optimization techniques, along with code refactoring, to mitigate ETL pipeline bottlenecks, resulting in a 20% reduction in data transfer time.• Successfully orchestrated the migration of data from transactional databases to the data warehouse, reducing data retrieval time by 15% and ensuring zero data loss throughout the process.• Ensured the integrity of the production environment by conducting up to 100+ unit tests written in Python prior to deployment, effectively preventing potential issues.• Technologies stack: Python (PySpark, Pandas, Awsglue, Boto3, Unittest, Pytest), Spark, Terraform, Gitlab, AWS (Glue, Lambda, Step Functions, EventBridge, RDS, S3, ECS, Fargate), GCP (Cloud Storage, Dataproc), Airflow, Docker, Fivetran, Jupyter Notebook, PostgreSQL, MySQL, Snowflake. Show less