Senior Data Architect

SIX; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

SIX in London is seeking an experienced Data Architect to lead data architecture across Financial Information products. You will design canonical data models, define metadata standards and enable AI-friendly data access while ensuring regulatory alignment.

You will partner with delivery teams and IT Architecture to translate complex data concepts into scalable data products, working with APIs, data lakes, and schemas to deliver value for customers and the business.

Qualifications

• 5+ years of experience in data modelling or data architecture within financial services.
• Proficiency in UML data modelling tools such as Sparx EA (ideally), Erwin, PowerDesigner or similar.
• Strong understanding of the financial data domain: securities reference data, corporate actions, market data, and regulatory classifications.
• Understanding of API design principles (REST, GraphQL) and schema evolution strategies for backward compatibility.
• Fluent in English (verbal & writing). German is a plus.

Responsibilities

• Design, develop and maintain the technology-agnostic, business-aligned canonical/conceptual data models for Financial Information, defining class definitions, standards and association semantics.
• Provide data architecture expertise to all delivery teams to ensure robust data products that meet customer expectations and support maintenance and enhancement.
• Develop and maintain design, naming conventions, dictionaries, lineage and metadata standards, collaborating with data quality teams.
• Partner with stakeholders across the business to translate complex data concepts into robust data products that customers want to purchase and contribute to architectural governance.
• Support the evolution of data distribution models, including API-first delivery and AI data access enablement.

Skills

Schema design

Relational databases

Data lakes/lakehouses

API formats

Metadata & lineage

Tools

Sparx EA

Erwin

PowerDesigner

Job description

The Financial Information division within SIX Group is a global provider of financial data and analytics to the global financial services industry. This role sits within the Business-led Product Development division and focuses on business data architecture, ensuring our financial data products meet customer, commercial and regulatory needs. The role partners closely with IT Architecture as a key stakeholder but is not part of the IT function.

We are looking for an experienced data architect to work within the Financial Information Product Delivery group to provide data architecture leadership across the firm to ensure our data products deliver value to our customers and they can be readily maintained and enhanced. This encompasses the design and architecture of logical and physical data models and schemas, data transport mechanisms, metadata management, lineage management, API schema design and enabling SIX financial information to be accessible to AI agents.

What You Will Do

• Design, develop and maintain the technology-agnostic, business-aligned canonical/conceptual data models for Financial Information, defining class definitions, standards and association semantics.
• Provide data architecture expertise to all delivery teams to ensure we build data products that meet customer expectations, can be readily maintained and enhanced, and we have a core foundation on which we can readily build new revenue generating products.
• Develop and maintain design, naming conventions, dictionaries, lineage and metadata standards, collaborating with data quality teams to ensure models support validation rules.
• Partner with stakeholders across the business to translate complex data concepts and requirements into robust data products that customers want to purchase whilst contributing to the architectural governance process.
• Support the evolution of data distribution models, including API-first delivery and AI data access enablement.

What You Bring

• Hands-on experience designing schemas for relational databases, messaging, data lakes/lakehouses (Databricks, Snowflake, or equivalent), and API/message formats (JSON Schema, OpenAPI, Avro, Protobuf). Strong understanding of metadata and lineage management.
• 5+ years of experience, or demonstrated delivery against requirements in data modelling, data architecture, or a closely related discipline within financial services with proficiency in UML data modelling tools such as Sparx EA (ideally), Erwin, PowerDesigner or similar
• Strong understanding of the financial data domain: securities reference data, corporate actions, market data, and regulatory classifications, fixed income would be highly desirable
• Understanding of API design principles (REST, GraphQL) and schema evolution strategies for backward compatibility is essential. Direct experience of making data commercially available to AI agents is desirable.
• Fluent in English (both verbal & writing), German is a plus. It is essential that the person in this role is able to clearly communicate complex concepts and data structures to a wide range of stakeholders.