Data Architect – Snowflake on AWS

Banking Data Modernisation Program

We are seeking an experienced Data Architect to support a major banking data modernisation program, migrating on-premises data workloads to Snowflake on AWS.

You will define and govern the target-state data architecture, guide migration and modelling decisions, and ensure the platform is secure, scalable, resilient, cost-effective and operationally supportable.

What You’ll Do

• Assess the existing data landscape, including source systems, data flows, interfaces, dependencies and workloads.
• Define the target architecture across data ingestion, storage, transformation, modelling and consumption.
• Design raw/landing, curated and business-consumption data layers.
• Establish patterns for batch, incremental and near-real-time ingestion into AWS and Snowflake.
• Guide the migration of data pipelines, transformations and workloads from on-premises platforms.
• Define standards for enterprise data products, analytical models and semantic layers.
• Establish data quality, reconciliation, lineage, metadata and governance requirements.
• Define security controls covering RBAC, encryption, masking, privacy and auditability.
• Set requirements for performance, scalability, availability, recoverability, observability and cost optimisation.
• Establish Snowflake performance and FinOps principles, including warehouse sizing, workload isolation and query optimisation.
• Define operational-readiness requirements, including monitoring, alerting, runbooks and managed-service handover.
• Provide technical leadership, design assurance and architecture governance throughout delivery.

What You’ll Bring

• Strong hands-on Snowflake architecture experience, including warehouses, databases, schemas, tables, views, stages, Snowpipe, Streams and Tasks.
• Strong AWS data architecture knowledge across ingestion, storage, data lake and integration services.
• Deep understanding of data warehousing, lake/lakehouse architecture, ETL/ELT and data integration.
• Experience designing migrations from on-premises platforms to cloud-based data platforms.
• Strong dimensional and relational modelling skills, including data products and semantic layers.
• Experience with data quality, reconciliation, metadata, lineage, cataloguing and governance.
• Knowledge of IAM/RBAC, encryption, masking, privacy controls and secure data architecture.
• Experience with CI/CD, DataOps and automated deployment patterns.
• Strong Snowflake performance engineering and cloud cost-optimisation expertise.
• The ability to produce target-state architectures, migration designs, data-flow diagrams, architecture standards, decision records and reusable patterns.
• Experience defining operational-readiness, monitoring and production-support models.
• Strong stakeholder engagement skills across business, data, security, risk, engineering and operations teams.
• Banking, financial services or highly regulated enterprise experience is strongly preferred.
• Snowflake and AWS architecture or data engineering certifications are highly regarded.
• Experience with TOGAF, Power BI, enterprise semantic models, data catalogue platforms or integration tooling would be advantageous.

Why Apply?

This is a high-impact opportunity to shape the future data architecture of a major banking environment, work with modern Snowflake and AWS technologies, and guide a complex transformation from design through to production.

If you are an experienced Data Architect with strong Snowflake, AWS and data-modernisation expertise, we would welcome your application.