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November 4, 2026
Senior Business Analyst (Data)
Mid • Remote
120 - 150 PLN/yr
Warsaw, Poland
Quick Facts
Role: Senior Business Analyst (Data)
Engagement: 6-month freelance contract (full-time, potential extension)
Focus: Enterprise Loyalty Revenue Accounting on Databricks
Description
In this role, you will bridge Finance stakeholders and technical engineering squads to define detailed data requirements, testable business logic, and field-level source-to-target mapping rules for a Databricks-based loyalty revenue accounting platform. You will translate complex accounting and revenue allocation rules into precise technical specifications and Jira user stories with clear acceptance criteria. You will collaborate across the delivery lifecycle to validate built data pipelines against the specifications.
Responsibilities
Define and document detailed data requirements for a Databricks-based platform solution with Finance product teams and technical architects
Specify business logic in testable terms, including calculations, revenue allocations, transaction treatment rules, and accounting journal outputs
Produce comprehensive source-to-target mapping specifications with field-level definitions, data transformations, and reference data structures
Write user stories, functional requirements, and unambiguous acceptance criteria in Jira so engineers can build and testers can validate
Maintain end-to-end traceability from business objectives to technical mappings and ongoing specification updates
Identify data anomalies, edge cases, and scope gaps early, including potential solutions and business impact assessments
Collaborate continuously with product manager, data engineers, architects, and quality engineers to validate pipelines against specifications
Facilitate solution walkthroughs and formal sign-offs with Finance stakeholders and business owners
Requirements
Proven experience as a Business Analyst on data-centric initiatives (data platforms, data warehouses, or data migration projects)
Track record of defining low-level data mapping logic and technical business rules
Extensive experience writing and structuring user stories and acceptance criteria in Jira
Practical ability to read, query, and reason about complex data models, schemas, and tabular structures using SQL
Strong communication and stakeholder management skills translating between commercial Finance and technical delivery squads
Hands-on experience working in iterative Agile delivery teams
Availability for a full-time 6-month freelance contract with immediate or near-term start
Nice to Have
Hands-on familiarity with Databricks Lakehouse or similar cloud data environments
Domain knowledge in corporate finance, revenue accounting, or financial reconciliations and journal generation
Experience working with loyalty programmes, airline systems, or travel industry data structures
Understanding of event-driven architectures and streaming data sources
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