Self-employed, Poznań
Senior consultant on Snowflake/Azure Data Warehouse engagement. Scaled engineering team from 2 to 6 developers while establishing coding standards, documentation practices, and development processes. Led legacy migration, built automated CI/CD pipelines with GitHub Actions, and decoupled ingestion from transformation layers.
Snowflake
dbt Core
dbt Cloud
Python
Azure
Airflow
ADF
GitHub Actions
Netguru, Poznań
Built and maintained data pipelines for marketing analytics in the insurance sector. Drove PoCs, automated data migration, and engineered features for the ML Ops team. Optimized Snowflake costs and query performance. Consulted on internal HR analytics platform and conducted technical interviews.
Snowflake
Python
AWS
Terraform
dbt Core
Airflow
GitLab CI
Capgemini, Poznań
Designed and built a Snowflake data warehouse from the ground up. Developed ETL/ELT pipelines in Python on AWS using CDK. Implemented RBAC model, managed infrastructure, and drove cost optimization initiatives.
Snowflake
Python
AWS
Fargate
Lambda
Glue
CDK
Roche Polska, Poznań
Led the migration of one of the company's largest data warehouses from Teradata to Snowflake on AWS. Built automated refactoring scripts for Informatica jobs and designed the historical data migration strategy. Previously served as Data Vault modeler, ran PoCs across Informatica, Teradata, and MarkLogic, and contributed to the Design Authority Team on cross-platform architecture decisions.
Snowflake
AWS
Python
IPC
Teradata
MarkLogic
CGI Polska, Poznań
Delivered ETL solutions across 3 concurrent projects: primary developer for a Data Vault warehouse, contributor to a Kimball-style warehouse, and 2nd line support for IPC and SAP BO environments.
SSIS
SQL Server
IPC