George Czelusniak
George Czelusniak
Open to work
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Feel free to explore my portfolio and reach out, I'd love to connect!

About me

Data Engineer with 1 year of experience, successfully transitioning from a Finance background to the data world. With a degree in Industrial Engineering, I leverage my analytical foundation to build and optimize end-to-end data pipelines. I've demonstrated strong initiative in mastering Python, Azure Data Factory, SQL, and dbt Cloud to deliver robust solutions in Snowflake and Microsoft Azure environments.

Experience
Full-time roles & promotions
ExxonMobil · Curitiba, PR
Data Engineer
Oct 2024 – Oct 2025
ExxonMobil · Curitiba, PR
ExxonMobil · Curitiba, PR
Cost Accounting Analyst
Jan 2023 – Sep 2024
ExxonMobil · Curitiba, PR
ExxonMobil · Curitiba, PR
Cost Accounting Trainee
Jan 2023 – Oct 2023
ExxonMobil · Curitiba, PR
Cargill · Castro, PR
Continuous Improvement Intern
Aug 2022 – Nov 2022
Cargill · Castro, PR

Technical skills
Data Warehouse & Modeling
Snowflakedbt CloudDuckDB
Data Integration
Azure Data FactoryAirflowDocker
Visualization & Analytics
Power BIApache SupersetExcel
Tools
GitGitHubCI/CDSAP
Languages
PythonSQL

Education
🎓 B.Sc. in Production Engineering
Universidade Tecnológica Federal do Paraná (UTFPR)
Dec 2023 · Ponta Grossa - Paraná, Brazil

Certifications
dbt Labs
dbt Fundamentals
2024
Snowflake
Hands-On Essentials
2024
IBM
SQL: A Practical Introduction for Querying Databases
2023

Projects
Movie Analytics Pipeline preview
View on GitHub
Movie Analytics Pipeline

End-to-end batch data pipeline using the GroupLens movie dataset. Runs 100% locally with open-source tools — no cloud account required. Medallion architecture with 8 dbt models, automated CI/CD, and 5 business dashboards.

  • Medallion architecture (Raw → Staging → Mart)
  • 8 dbt models with full test coverage
  • 5 business dashboards in Apache Superset
PythondbtDuckDBAirflowDocker
ELT Pipeline — E-commerce DWH preview
Coming soon
ELT Pipeline — E-commerce DWH

End-to-end ELT pipeline ingesting data from multiple sources into a Snowflake data warehouse, with dbt models for transformation and Airflow for orchestration.

  • Processing time reduced by 60%
  • 50GB+ daily ingestion
  • 99.9% pipeline uptime
PythondbtSnowflakeAirflowS3

Additional Information
Languages
  • 🇧🇷Portuguese (Native)
  • 🇺🇸English (Advanced)
  • 🇪🇸Spanish (Intermediate)
Interests
HikingCyclingStrength TrainingBakingSelf-learningDancing
Academic Activities

Member of the Industrial Engineering Junior Enterprise at university, participating in consulting projects and organizational initiatives.

Volunteering

Member of Rotaract for 5 years — an international organization linked to Rotary that promotes youth leadership, professional development, and social impact projects.


George Czelusniak · Data Engineer · Curitiba, Brazil© 2026 · Built with craft.