Data & BI Analyst (Power BI & SQL)

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hubQuestBusiness intelligence

Workplace type: remote; Locations: Warszawa, Jana i Jędrzeja Śniadeckich 10, Warszawa, Country code: PLFull-TimeMiddle

Salary100 - 120 PLN per hour

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Job Details

Around 3 years or more of relevant experience in business intelligence, data analytics or a similar role.
Hands-on responsibility for SQL and Power BI deliverables.
Confidence writing and troubleshooting SQL queries with multiple joins, CTEs, aggregations and window functions.
Practical Power BI experience in data modelling, DAX, Power Query and report development.
Some hands-on experience with advanced Power BI features such as composite models, calculation groups or row-level security (RLS).
Understanding of relational and dimensional data modelling, ETL/ELT processes and data quality checks.
Experience with a version control system such as Git.
Strong spoken and written English for meetings, discussions, technical explanations, requirements and documentation.
Ability to work directly with business stakeholders to clarify requests, discuss approaches and challenge assumptions constructively.
Analytical approach to troubleshooting calculations and tracing data to identify issues.
Ability to take ownership of assigned work, recognise dependencies and keep others informed.
Azure Databricks experience is an advantage; familiarity with Azure Data Factory, Microsoft Fabric or Delta Lake is also a plus.

Prepare and transform data using SQL, combining sources, cleaning and filtering datasets, aggregating information and implementing KPI calculations.
Build and maintain Power BI semantic models, DAX measures, reports and visualisations.
Use advanced Power BI capabilities such as composite models, calculation groups and row-level security when needed.
Discuss reporting needs with business stakeholders and turn ambiguous requests into clear requirements and agreed outcomes.
Translate requirements into data definitions, transformation rules and report behaviour.
Analyse regional differences in KPI definitions and calculation rules while maintaining consistency with agreed exceptions.
Trace reported figures to their sources, reconcile calculations and explain discrepancies.
Validate datasets, measures and reports, and support testing, releases and ongoing improvements.
Collaborate with data engineers and BI developers on data structures, dependencies and reporting-process changes.
Document definitions, calculation logic and decisions, and help users understand reports and functionality.

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