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Siena Partnership
Lead Business Analyst - Data

Lead Business Analyst - Data

Hybrid

London, United kingdom

Senior

Freelance

12-03-2026

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Skills

Data Governance Data Engineering Snowflake Databricks

Job Specifications

Contract Business Analyst is required to support the programme by translating business and data requirements into clear deliverables for the data engineering and platform teams.

Key Responsibilities

Lead business and data requirements gathering across key domains.
Translate stakeholder needs into functional data specifications for engineering teams.
Define source-to-target mappings and transformation rules for platform migration.
Support definition and implementation of MDM entities, hierarchies and golden records.
Document data flows, lineage and integration dependencies across the platform.
Support rollout of data governance processes, ownership models and data quality rules.
Facilitate workshops with business stakeholders, data engineers and vendors.

Core Deliverables

Business and functional data requirements documentation
Source-to-target mapping and transformation logic
Master data definitions and matching/survivorship rules
Data lineage and process flow documentation
Migration analysis for Databricks → Snowflake
Data governance artefacts (ownership, stewardship, quality rules)
UAT support and data validation frameworks

Required Experience

6–10+ years Business Analysis experience on data programmes
Experience delivering MDM implementations
Strong experience with Informatica (MDM / Data Quality / Integration)
Experience working with Snowflake or modern cloud data platforms
Exposure to Databricks or lakehouse architectures
Strong understanding of data modelling, governance and data quality

About the Company

Siena Partnership is a boutique consultancy providing executive search, interim management, delivery teams and advisory services. We connect high-performing professionals from technology, change, finance and operations across multiple sectors. For further insight into the business please visit our website. http://www.thesienapartnership.com Know more