Outside IR35 Data Modeller Contract Jobs
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Sign UpSoftware Engineer - Kotlin & Coroutines, OUTSIDE IR35, REMOTE
Posted Today by Gravitas Recruitment Group Ltd
Senior Software Engineer - Kotlin & Coroutines. £500/day LTD CO OUTSIDE IR35. 100% REMOTE. An interest in AI (Agenti...
- Rate £500 per day
- Category Outside
- Work type Remote
- Location London, UK
Azure Data Platform Engineer - Azure, Synapse, SQL MI, PostgreSQL, MongoDB, Terr...
Posted Today by TrinIT Talent Ltd
Azure Data Platform Engineer - Azure, Synapse, SQL MI, PostgreSQL, MongoDB, TerraformTrinIT Talent are looking for an Az...
- Rate £400 per day
- Category Outside
- Work type Hybrid
- Location London, UK
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Sign UpData Migration - Salesforce - 3 months - remote - Outside IR35
Posted Today by Harvey Nash IT Recruitment UK
Data Migration Consultant - 3 months - Remote - £250 per day - Outside IR35I am working with a Salesforce Consultancy wh...
- Rate £250 per day
- Category Outside
- Work type Remote
- Location England, UK
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About Our Outside IR35 Data Modeller Contract Roles
What does a data modeller contractor do?
Data Modeller contractors are engaged to design the logical and physical structures that define how data is organised, stored, and related within databases, data warehouses, and data platforms. The work involves translating business requirements into data models, designing entity-relationship diagrams, dimensional models, or data vault structures depending on the target system, documenting data definitions and business rules, reviewing and optimising existing data structures for performance and maintainability, and collaborating with data engineers and analysts to ensure that data models meet both technical and analytical requirements. Data Modellers are brought in during platform builds and migrations, when data quality problems can be traced to poor data structures, or when an organisation needs to establish a canonical data model to support integration or analytics programmes.
Data Modeller contractors are expected to have strong conceptual, logical, and physical data modelling skills, with the ability to work at each level of abstraction depending on the stage of the project. Proficiency in data modelling tools such as erwin, Sparx EA, or dbt for transformation modelling is expected. Deep understanding of dimensional modelling techniques, including star and snowflake schemas and slowly changing dimensions, is essential for roles focused on data warehouse and analytics platforms. Experience with data vault 2.0 methodology is increasingly sought for enterprise data warehouse projects. Familiarity with the data platform technologies in use at the client, whether a traditional RDBMS such as SQL Server or Oracle, or a cloud data warehouse such as Snowflake or BigQuery, is expected to inform the physical modelling decisions.
What is the market like for data modeller contractors?
The market for Data Modeller contractors is a specialist and relatively senior market within the broader data discipline, most active during significant data platform builds, migrations, and consolidation programmes. Financial services, insurance, telecommunications, and retail are among the most consistent buyers of Data Modeller contract resource, as these sectors typically manage large, complex data estates that require careful structural design to support both operational and analytical use cases. Rates are influenced by the specialist nature of the discipline and the relatively limited supply of contractors with genuine enterprise data modelling experience. Contractors who combine strong modelling skills with cloud platform knowledge and familiarity with modern data architecture patterns are consistently in the strongest demand.
What does Outside IR35 mean?
IR35 is UK tax legislation that determines whether a contractor is genuinely self-employed or working in a manner that resembles employment. When a contract is classified as outside IR35, the engagement is treated as a business-to-business arrangement. The contractor operates through their own limited company, invoices for services, and manages their own tax affairs including corporation tax, self-assessment, and VAT where applicable.
Outside IR35 engagements are assessed against three key factors: the degree of control the client exercises over how the work is delivered, whether the contractor has a genuine right to provide a substitute, and whether there is a mutuality of obligation between the parties. Contracts that demonstrate contractor autonomy, project-based delivery, and the absence of ongoing employment obligations are more likely to sit outside IR35. Since April 2021, responsibility for making this determination sits with the end client for medium and large private sector organisations.
On QualityContracts.co.uk, approximately 28% of roles with a stated IR35 status are classified as outside IR35. The proportion varies by sector and role type, with some disciplines seeing a significantly higher or lower share of outside IR35 opportunities. Each listing on this page displays its IR35 status where provided by the hiring organisation.
What data modeller roles are usually Outside IR35?
Data modelling shows an even split between inside and outside IR35 with a stated status. Outside IR35 data modelling work tends to involve specific design projects: building a dimensional model for a new data warehouse, designing a canonical data model for a system integration, or producing entity-relationship models for a defined scope. The discrete, deliverable-led nature of this work points toward outside IR35. Consultancies and organisations undertaking data platform migrations are common clients.
How much do data modeller contractors usually earn when working Outside IR35?
Contract rates for data modeller roles typically range from £450 to £800 per day, depending on the scope of the role, required expertise, and the delivery expectations of the engagement. Rates shown are for outside IR35 engagements and reflect the gross day rate paid to the contractor's limited company before any personal tax obligations.
How many Outside IR35 data modeller vacancies are there on Quality Contracts?
Over the past twelve months, we have tracked over 100 data modeller contract roles across the site. Of the roles currently listed on our site, around one in four are Outside IR35. Data reviewed up to June 2026.