09/23/2026 updated

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Premium member
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Azure Data Architect | Databricks Snowflake ADF | Power BI & ETL Pipelines | Microsoft Partner

Wroclaw, Poland
Worldwide
IT Engineer (Specialist degree) - Belarusian State University of Informatics and Radioelectronics
Wroclaw, Poland
Worldwide
IT Engineer (Specialist degree) - Belarusian State University of Informatics and Radioelectronics

Profile attachments

CV_Dzianis_Malazhavy - Lead Data Architect.pdf
CV_Dzianis_Malazhavy - Senior Data Engineer.pdf

About me

Data architect, 10+ years of experience building end-to-end enterprise platforms on Azure, Databricks and Snowflake — from source integration and ETL/ELT pipelines to Power BI with RLS. Clients include Norsk Hydro, Softwarium, Kyriba and Toshiba, where I cut infrastructure cost by $1M a year.

Azure DatabricksdbtAzure DevOpsSAP S/4HANASql Data WarehouseApplication Programming Interfaces (APIs)Microsoft AzureBusiness IntelligenceBusiness Intelligence DevelopmentCloud EngineeringData ArchitectureData InfrastructureData IntegrationExtract Transform Load (ETL)Data MartData WarehousingIBM InfoSphere DataStageDevOpsAzure SQLMicrosoft Business IntelligenceMicrosoft Power BIDataOpsAzure Data LakePL-SQLBusiness Intelligence Development StudioAzure Data FactoryGoogle Data StudioPower Platform IntegrationSnowflakeApache SparkSQL Server Business IntelligenceMicrosoft FabricData LakePySparkAzure Data AnalyticsAzure Synapse AnalyticsData PipelineJenkinsDatabricks
Cloud Data Platform Engineering
Expertise in designing and building unified data platforms on Snowflake, Azure Databricks and Azure Data Factory, including multi-tenant architectures, ETL/ELT pipeline design, incremental loading and cost optimisation across large-scale enterprise environments.

Business Intelligence & Reporting
Deep knowledge of Power BI, DAX and data modelling, including enterprise-grade Row-Level Security with tenant-level isolation, multi-level reporting structures and integration with SQL Server and Snowflake data layers serving 50+ client organisations.

Data Warehouse & Data Mart Design
Proven track record in consolidating 40+ source systems across multiple countries into single data warehouse solutions, designing data marts and ensuring consistent, reliable financial and operational reporting for global stakeholders.

ERP System Integration
Experience integrating data from 6+ ERP systems including SAP S/4HANA, AS/400, EP21, Oracle and RHFM into unified data platforms, enabling automated financial reporting and eliminating manual consolidation cycles.

Python & SQL Engineering
Proficiency in Python and SQL for data pipeline development, CI/CD automation with Jenkins and Azure DevOps, scripting on Linux and PL/SQL for enterprise application projects.

AWS & Cloud Infrastructure
Hands-on experience with AWS services including S3 and RDS, as well as Azure Key Vault and Azure Storage, for building robust, scalable and secure data infrastructure pipelines.

REST API & System Integration
Building custom API integrations and automated ETL pipelines connecting internal platforms with external data sources, including SharePoint, Google Sheets, Excel/CSV and SolarWinds for operational monitoring.

Pre-Sales & Stakeholder Management
Comfortable in client-facing roles including pre-sales, scope estimation, architectural decision support and daily requirements work with North American and international stakeholders.

Leadership & Team Building
Experience in product ownership, team building, architectural decision support and handing off maintained platforms to internal teams, ensuring long-term operational stability above 95%.

Experience

Professional experience10+ years
Freelancer since2022

Languages

EnglishFluentPolishGoodRussianNative speaker

Project history

Lead Data Architect

Norsk Hydro (global industrial group, supply chain)

Industry & Mechanical Engineering

>10.000 team member

Designed and built a unified Snowflake-based data platform collecting data from 6+ ERP systems: SAP S/4HANA, AS/400, EP21, Oracle, RHFM. Responsible for data quality, object modelling and Power BI reporting. Daily communication with North American stakeholders. Reporting cycles reduced from months of manual consolidation to a few hours. Stack: Snowflake, Azure Data Factory, Power BI, SAP S/4HANA, EP21, Oracle, AS/400, RHFM, SQL.

Lead Data Architect

Toshiba (technology company)

Automotive & Vehicle Manufacturing

>10.000 team member

Designed a unified multi-tenant architecture inside a single Azure Databricks workspace with strict customer-level data isolation. Redistributed compute workloads to eliminate idle clusters, standardised storage, secrets and deployment, and introduced a governance framework. Reduced infrastructure cost from 120,000 EUR to 50,000 EUR per month, a 58% saving of over 1M EUR per year, with faster customer onboarding and no loss of data isolation. Stack: Azure Databricks, Azure Key Vault, Azure Storage, PostgreSQL, Row-Level Security.

Senior Data Engineer

Softwarium (software development company)

Internet & IT

50-250 team member

Built enterprise-grade Row-Level Security with tenant-level isolation inside shared Power BI dashboards on a SQL Server data layer. Implemented configuration-driven client onboarding through GitHub and automated management of report access and datasets. Integrated SolarWinds for operational monitoring. Result: 50+ tenant organisations served from one platform with 100+ hours of operational support effort saved. Stack: Power BI, SQL Server, GitHub, SolarWinds, Row-Level Security.

Senior Data Engineer

LBMC (client - Multinational sales company)

Goods & Retail

>10.000 team member

Consolidated 42+ source systems into a single data warehouse with hourly automated ETL in Azure Data Factory. Delivered role-based Power BI dashboards with Row-Level Security for regional controllers and global management. Result: 100+ hours per week saved across finance teams with consistent and reliable figures across all countries. Stack: Azure Data Factory, Data Warehouse, Power BI, Row-Level Security.

Senior BI Engineer

LBMC (client - US healthcare company)

Pharmaceuticals & Medical Technology

>10.000 team member

Connected the client's internal platform through a custom API and built an automated ETL pipeline on Azure Databricks with hourly refreshes. Structured reporting across four levels: Overall, Hospital, Doctor, Patient, feeding a management dashboard and a secure per-physician view. Result: 11.96M USD net revenue under management with full visibility into charges, payments and adjustments in near real time. Stack: Azure Databricks, Power BI, custom API integration, data modelling.

Product Owner / BI Engineer

Kyriba (FinTech)

Banking & Financial Services

1000-5000 team member

Full-time role owning and maintaining the company's internal data projects. Rebuilt the entire internal data infrastructure by replacing fragile Google Cloud MySQL scripts with a clean AWS-based pipeline using direct API extraction, Jenkins automation and S3-based file processing. Ongoing maintenance and development of internal data projects with reporting delivered in Power BI and Qlik Sense. Result: platform stability above 95%. Stack: AWS, Jenkins, Python, S3, MySQL, Power BI, Qlik Sense.

Senior Data Platform Engineer

Think Data Insights (US clients)

Internet & IT

10-50 team member

End-to-end data platform delivery for US enterprise clients: full ETL pipelines on SQL Server, Azure Data Factory and SSIS, with Power BI reporting on top. Involved in pre-sales, architecture design, scope estimation and direct client communication. Stack: SQL Server, Azure Data Factory, SSIS, SSAS, Power BI.

Lead Developer

EPAM Systems

Internet & IT

>10.000 team member

Lead developer on HP Asset Manager enterprise projects covering architecture, production releases, SQL scripting on PROD and full product lifecycle. Configured environments from scratch on Linux without vendor documentation. Stack: Oracle, SQL, PL/SQL, PowerShell, Linux.

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