Data Modeler

Principal Data Modeller | Credit / Financial Data Contract London | Hybrid / flexible working £600 p/d Outside of IR35 | 6 Months Rolling Contract This role requires a senior data modeller to take ownership of a complex financial data domain within a global data and analytics environment focused on defining and stabilising a core credit data model used across multiple products and consumers. You’ll be expected to operate independently, make modelling decisions with incomplete information, and leave behind a clear, buildable structure for engineering teams. This is a hands-on modelling authority position! THE ROLE: • Own the conceptual → logical → physical data model for a core credit domain • Define and refine key entities such as issuer, instrument, rating, event, and time/history • Work across fragmented and under-documented data sources to establish clean, canonical definitions • Produce source-to-target mappings, data dictionaries, and lineage artefacts • Ensure models are aligned with downstream delivery (data products, feeds, APIs) • Partner with product, engineering, and domain stakeholders to drive decisions and resolve ambiguity • Set modelling standards that others can follow and build against THE REQURIMENTS: • Strong experience owning enterprise data models (conceptual, logical, physical) • Proven background in financial services data (credit, risk, markets, or reference data) • Ability to work in messy environments and reverse-engineer existing data structures • Experience producing canonical models and governance artefacts • Comfortable operating independently without heavy oversight • Strong stakeholder engagement and ability to challenge where needed • Exposure to Snowflake / modern cloud data platforms • Experience working with data products, feeds, or APIs • Familiarity with Data Vault / dimensional modelling approaches • Experience in environments with multiple data consumers and distribution channels