Available to hire
I am a Senior Data Engineer with 15+ years of experience in data modelling, performance optimization, and building large-scale ETL pipelines in cloud environments. I specialise in Data Vault 2.0, AWS-native solutions, Glue-based ETL, and high-performance architectures for digital analytics, e-commerce, and finance.
I thrive collaborating with analysts, PMs, and engineers to deliver reliable, production-grade data flows that are auditable, scalable, and aligned with business goals, with measurable impact on decision making.
Language
English
Fluent
Polish
Fluent
Work Experience
AWS Data Engineer at BP
January 1, 2023 - November 3, 2025Designed and implemented an AWS cloud-native data warehouse for the Metrics Card tool, an analytics solution to monitor the North Star Metric (NSM) of digital products. Implemented modular ingestion interfaces supporting Mixpanel, Google Analytics, Power BI, Azure Storage, AWS SQS and flat files. Applied Data Vault 2.0 and dimensional modelling to ensure traceability and historical tracking across KPIs. Ingested NoSQL sources and supported a hybrid data lake architecture. Built an event-driven metrics store using AWS Kinesis, Lambda, and Redshift. Introduced CI/CD pipelines with CloudFormation and GitHub, improving deployment speed and reducing manual errors. Developed data observability dashboards using CloudWatch, with alerting on pipeline health. Developed an email notification engine using AWS Simple Email Service. Collaborated closely with analysts, PMs, and devs to translate product metrics into reliable, scalable data flows.
Data Warehouse Consultant at Base.com
January 1, 2023 - January 1, 2023Developed a comprehensive data warehouse on AWS using the Data Vault 2.0 model, including S3, Redshift, Glue, Lambda, EventBridge, SNS, AWS OpenSearch, Athena, PostgreSQL, and CloudFormation. Led the launch of BASE Analytics, a data-centric tool embedded in Base.com that provides e-commerce companies with global sales performance insight. Built a custom pipeline processing framework on Redshift and designed an ETL processing framework. Engineered ingestion interfaces for RDBMS, Google Analytics, JSON, and REST APIs. Introduced Airflow for workflow orchestration and developed a regularly updated data sharing layer on OpenSearch. Deployed automated data quality tests (Great Expectations + AWS Lambda) to validate pipeline outputs. Tuned Redshift schema and SQL for performance and cost efficiency.
Data Warehouse Consultant at Santander Consumer Bank Nordics (Denmark)
November 1, 2020 - November 1, 2020Built ELT pipelines for the financial risk domain using SQL Server; extended the data model to support new reporting domains and ensure consistent, business-aligned outputs for the Risk team. Collaborated closely with the Risk team to translate business logic into usable datasets. Standardised data quality and lineage tracking as part of enterprise compliance and reporting.
Data Warehouse Expert at Bank Millennium
October 1, 2018 - October 1, 2018EDW development, modelling, performance tuning, ETL process design, and BI delivery. Specialised in enterprise reporting, risk analytics, and financial data domains using Oracle, DB2, ODI, and custom SQL/Spark processing.
Data Warehouse Expert at PZU
April 1, 2015 - April 1, 2015Data Warehouse Expert focusing on EDW for insurance domains; implemented data models, data quality, and reporting solutions.
Data Warehouse Engineer at Raiffeisen Bank
October 1, 2014 - October 1, 2014Progressed from DWH Administrator to Expert; responsible for EDW development, modelling, performance tuning, ETL processes, and BI delivery for enterprise reporting, risk analytics, and financial data; used Oracle, DB2, ODI, and Spark.
Data Warehouse Administrator at Raiffeisen Bank
August 1, 2009 - August 1, 2009DWH Administrator; supported EDW operations and BI delivery.
Education
B.A. in Economics at Warsaw College of Trade and International Finances, Warsaw
January 11, 2030 - November 3, 2025Qualifications
Data Vault 2.0 Certified Practitioner
January 11, 2030 - November 3, 2025Data Vault 2.0 Information Delivery
January 11, 2030 - November 3, 2025Oracle Database Certified Professional
January 11, 2030 - November 3, 2025Oracle Data Modelling and Relational Design
January 11, 2030 - November 3, 2025Industry Experience
Financial Services, Software & Internet, Professional Services, Retail, Education
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