Wojciech Marszałek

Junior Data Engineer @ Antdata

About

Passionate about data analytics and personal finance. Switched Finance to IT. Feel free to check out my Github and Portfolio.

Country

Poland

City

Poznan

Industry

Information Technology & Services

Skill

Data Engineering, Data Maintenance, Microsoft Azure, REST APIs, Data Integration, Data Warehousing, Apache Spark, PySpark, Git, Bitbucket, Java, Microsoft Power BI, Oracle Database, Oracle SQL Developer, English, German, Bash, Linux, PgSQL, pgAdmin

Experience

Junior Data Engineer

Antdata

2026-3 - Present · 7 mos

Poznań, Wielkopolskie, Poland

Data Engineer

WealthArc

2025-5 - 2026-2 · 10 mos

Warsaw, Mazowieckie, Poland

- ETL Development: Designing and maintanence of new data pipelines - Version Control & Deployment: Using Git on daily basis - Data Quality Assurance: Identifying duplicates and false data to ensure data integrity. - Automation & Scripting: Developing Python scripts for complex data analysis - Contacting banks to resolve data quality issues

Business Intelligence Specialist

Volkswagen Group Services sp. z o.o.

2023-10 - 2025-4 · 1 yr 7 mos

Poznań, Wielkopolskie, Poland

- Oracle Database Development: Creating procedures, tables, data modeling, optimization, and debugging. - ETL Development: Designing and deploying new data pipelines using Python or Java on an ETL server. - ETL Server Maintenance: Managing an ETL server on Linux, including debugging jobs and updating the repository. - Version Control & Deployment: Enhanced the deployment process by integrating Bitbucket and Git, enabling code review and deployment using Git branches. - Documentation: Creating and maintaining documentation on Confluence. - Data Quality Assurance: Identifying duplicates and false data to ensure data integrity. - Automation & Scripting: Developed a Java script that automatically retrieves DDL statements for all database objects and pushes changes to the repository. Additionally, repository comments are linked to an SQL table that connects changes to specific Jira issues.

Member

SKN Pracownia Systemów IT

2022-11 - 2024-8 · 1 yr 10 mos

Poznań, Wielkopolskie, Poland

Junior BI Consultant

DomData

2022-10 - 2023-3 · 6 mos

Poznań, Wielkopolskie, Poland

- analyzing data from clients in Real Estate branch - quering data using Microsoft SQL Server - desigining reports according to client's needs - taking part in meetings and delegations with german clients discussing reports

Member

SKN Inwestycji Kapitałowych Profit

2022-1 - 2022-10 · 10 mos

Poznań, Wielkopolskie, Poland

Promotion and Marketing Team - creation of social media graphics: Facebook and LinkedIn - creation of graphics on social media: Facebook, Instagram and LinkedIn to promote the Academy of Analysis 2022

Member-Candidate

SKN Inwestycji Kapitałowych Profit

2021-11 - 2022-1 · 3 mos

Poznań, Wielkopolskie, Poland

Marketing and Promotion Team - creating graphics on social media: Facebook i LinkedIn

Junior Analyst

INC SA

2022-6 - 2022-9 · 4 mos

Poznań, Woj. Wielkopolskie, Polska

Junior Accountant

OLX

2022-4 - 2022-6 · 3 mos

Poznań, Wielkopolskie, Poland

Stażysta w dziale księgowości

OLX

2021-6 - 2022-4 · 11 mos

Poznań, Wielkopolskie, Poland

- OCR processing of invoices - processing and posting of invoices in SAP (business trips, recurring invoices, fixed asset invoices) - analysis of fixed costs and acquisition of missing invoices - clearing of open items - Preparation of reimbursements for employees - posting Obido invoices in Comarch Optima - posting invoices to technical accounts - accounting for employee expenses in PRAP