11/05/2026 updated

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BI & Data Architect | Azure Data Platform | SQL Server | Power BI | Databricks

Jakubów, Poland
Only remote
Bachelor of Engineering in Computer Science, Warsaw Management University (2014-2016)
Jakubów, Poland
Only remote
Bachelor of Engineering in Computer Science, Warsaw Management University (2014-2016)

Profile attachments

Lukasz_Ruta_CV.pdf

Azure Data Platform & Cloud Architecture
Umfangreiche Erfahrung mit Azure SQL Managed Instance, Azure Data Factory, Azure Storage, ADLS Gen2, Azure Virtual Machines, Azure Batch und Azure Key Vault. Architektur-Level-Ownership bei der Migration von On-Premise-Workloads in die Azure-Cloud sowie beim Design skalierbarer Zielarchitekturen fuer moderne Datenplattformen.

Business Intelligence & Analytics (Power BI, SSAS, SSRS)
Mehr als 15 Jahre Erfahrung in Microsoft BI, Data Warehousing und Enterprise Reporting. Einsatz von Power BI Service, Power BI, DAX, Power Query / M, SSAS Tabular, SSRS und Power BI Report Server fuer die Entwicklung und Modernisierung von BI-Plattformen.

Data Engineering & ETL/ELT
Fundierte Kenntnisse in ETL/ELT-Prozessen, inkrementellem und Delta-Loading, Watermarking, REST/API- und dateibasierter Ingestion sowie Datenqualitaet und produktionsreifer Orchestrierung. Einsatz von SSIS, Azure Data Factory und SQL Stored Procedures fuer komplexe Datenpipelines.

Databricks & Lakehouse-Architektur
Praktische Projekterfahrung mit Azure Databricks, Spark SQL, Delta Lake und Medallion-Architektur (Bronze/Silver/Gold). Kenntnisse in Batch-Ingestion, kuratierten Reporting-Layern und arbeitendes Wissen in PySpark.

SQL Performance Engineering
Tiefgreifende Kenntnisse in T-SQL, Stored Procedure Design, Query Tuning, Indexierung sowie Optimierung von Verarbeitungsprozessen grosser Datenmengen und Produktions-Troubleshooting.

Datenbankentwicklung & -verwaltung
Erfahrung mit Microsoft SQL Server 2008-2019, Azure SQL, Teradata, PostgreSQL/PostGIS, SAP HANA und MS Access. Entwicklung und Pflege von Datenbanken, semantischen Modellen und Data Warehouses.

Sprachen & Abfragesprachen
Kenntnisse in T-SQL, SQL, DAX, M, Spark SQL, VBA, PL/SQL, PL/pgSQL, BTEQ sowie arbeitendes Wissen in Python und PySpark.

Tools & Delivery
Einsatz von Visual Studio, SQL Server Management Studio, Git, GitHub, GitLab, TFS, Jira, Stash, HP ALM, SNOW, pgAdmin sowie Arbeiten nach Agile und Scrum.

Leadership & Stakeholder Management
Teamkoordination, Aufgabenverteilung, Code-Reviews, technische Entscheidungsunterstuetzung sowie Zusammenarbeit mit Business-, BI-, Infrastruktur- und Governance-Stakeholdern zur Ausrichtung von Architektur und Anforderungen.

KI-gestuetzte Entwicklung
Kontrollierter Einsatz von KI fuer SQL-Entwicklung, Databricks/PySpark-Aufgaben, semantische Modellanalyse, Refactoring, Dokumentation und Loesung-Prototyping mit manueller Validierung und Ueberpruefung.

Experience

Professional experience10+ years
Freelancer since2010

Languages

EnglishFluentPolishNative speaker

Project history

BI Architect / Team Leader / Senior BI Developer

Intel (via ALTEN Polska)
Architecture, development and modernisation of an enterprise BI and data platform supporting engineering and business reporting. Provided long-term technical ownership and architectural guidance, participated in migration from on-premise SQL Server infrastructure to Azure, designed and developed Azure-based platform centred on Azure SQL Managed Instance, Azure Data Factory and Azure Storage, designed and optimised ETL/ELT processes, modernised high-volume processing, performed SQL performance engineering, designed and maintained semantic models and enterprise reporting solutions. Technical environment: Azure SQL Managed Instance, Azure Data Factory, Azure Storage / Blob Storage, Azure Virtual Machines, Azure Batch, Azure Key Vault, Power BI Service, Power BI, SQL Server 2016/2019, T-SQL, SSIS, SSAS Tabular, Power BI Report Server, DAX, Git, GitHub, Visual Studio, DAX Studio, Tabular Editor.

Data & BI Architect

Worldline, Utrecht / Netherlands (via ALTEN Polska)
Architecture and delivery of a modern Azure data platform supporting migration of legacy Power BI reporting solutions, with Databricks as part of the target technology stack. Designed target architecture for migration of legacy BI and reporting workloads to Azure, defined reusable ingestion, transformation and serving patterns using Delta Lake and medallion architecture, and translated existing reporting solutions into cloud migration strategies and implementation roadmaps. Technical environment: Azure Databricks, Spark SQL, Delta Lake, medallion architecture, Azure Data Factory, ADLS Gen2 / Azure Blob Storage, Power BI, SharePoint, SQL, Python/PySpark, Git.

Solution Auditor

Baxter (via Sii Poland)
Audited database structures, ETL processes and T-SQL code; prepared recommendations to improve solution quality, maintainability and team knowledge coverage. Technical environment: SQL Server 2016, SSIS.

BI Developer

PUMA (via Sii Poland)
Developed databases, ETL processes and analytical cubes; maintained and enhanced existing data-integration workflows. Technical environment: SQL Server 2017, SSAS, SSIS, Data Vault, Power BI.

BI Developer

Impress Decor Poland (via Sii Poland)
Developed sales reports and analytical reporting solutions. Technical environment: SAP Business Warehouse, Power BI.

BI Developer

PKO Leasing (via Sii Poland)
Maintained and developed an Operational Data Store and custom CRM database; enhanced existing ETL processes. Technical environment: SQL Server, SSAS, SSIS, Jira, Stash.

BI Developer

Pratt & Whitney (via Sii Poland)
Developed a data warehouse and ETL process for purchase-order analytics; built a tabular analytical solution for reporting and analysis. Technical environment: SQL Server 2016 SP1, SSAS, SSIS, Jira, Stash.

Senior Specialist in Management Information

Orange Polska S.A.
Developed reporting and analytics for infrastructure and FTTH programmes, including automated reporting, organisational analysis and BI-system support. Technical environment: SAP HANA, SAP Lumira, SAP Webi, Teradata, PostgreSQL/PostGIS, Hadoop/Hive, Talend, QGIS, Jira.

Data Warehouse Administrator

Philip Morris International Poland
Maintained and developed the data warehouse, supported a reliable analytical environment and cooperated with vendors and internal teams. Technical environment: SQL Server 2012, SSRS, SSAS, T-SQL, MS Excel, MS Access, VBA, HP ALM, SNOW.

Database Development Specialist

Eniro Poland
Automated data acquisition and standardisation processes, designed database applications and reporting solutions, and supported data quality and preparation. Technical environment: MS Access, MS Excel, VBA, SQL.

Database Maintainer

Empik.com / Empik
Performed competitor web monitoring and prepared reports, summaries and datasets for internal customers and the Sales Department. Technical environment: MS Access, MS Excel, VBA, SQL.

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