Snowflake Platform Engineer - Temp

London, United Kingdom

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Who we’re looking for

We are looking for an experienced Snowflake Platform Engineer to join our Data Platform team.

In this role you will be responsible for the day-to-day operation, security, and evolution of our Snowflake data platform. You will ensure the platform remains secure, performant, and available to data consumers across the business, while partnering closely with data engineering, analytics, and security teams. This is a hands-on technical role that requires deep Snowflake expertise combined with a strong appreciation for governance, access control, and cloud infrastructure.

You will act as the subject-matter expert for all things Snowflake and be a key point of contact for platform-related queries, incidents, and strategic decisions.

Enterprise Data Engineering sits within Global Technology. Our recent focus has been helping Schroders embed ESG data throughout our investment processes as part of the Global Sustainability initiative. While that work continues, we are expanding and centralising our engineering capabilities to support the entire organisation in 2025, with Snowflake increasingly at the centre of our data strategy.

What you’ll do

Platform Administration & Operations

Own the day-to-day administration and health monitoring of the Snowflake environment, including warehouse management, query performance, and cost optimisation.

Monitor platform usage, proactively identify performance bottlenecks, and implement tuning measures (clustering keys, materialized views, resource monitors, etc.).

Manage Snowflake upgrades, feature releases, and preview evaluations, maintaining a release calendar and communicating changes to stakeholders.

Define and enforce platform standards, naming conventions, and best practices across databases, schemas, warehouses, and objects.

Maintain thorough documentation of platform architecture, runbooks, and operational procedures.

Access Management & Identity

Design, implement, and maintain Snowflake RBAC (Role-Based Access Control) hierarchies aligned to the principle of least privilege.

Manage user provisioning and deprovisioning, including integration with SSO / identity providers (Okta, Azure AD, etc.).

Conduct regular access reviews and entitlement audits to ensure compliance with internal policies and external regulations.

Own service account management and key-pair authentication for pipeline and application integrations.

Collaborate with the security team to respond to access-related incidents and produce access reports for auditors.

Security & Compliance

Implement and maintain Snowflake security controls including network policies, IP whitelisting, Private Link configurations, and multi-factor authentication enforcement.

Configure and manage dynamic data masking, row access policies, and column-level security to protect sensitive and PII data.

Ensure data encryption at rest and in transit is correctly configured and regularly validated.

Monitor Snowflake audit logs and the Account Usage schema for anomalous behaviour, integrating with SIEM tooling where required.

Support regulatory compliance initiatives (GDPR, SOC 2, ISO 27001) by providing platform-level evidence and implementing required controls.

Participate in security assessments, penetration tests, and remediation activities relevant to the Snowflake platform.

Evaluate and plan the adoption of new Snowflake features and releases, assessing business impact and communicating rollout plans.

Manage infrastructure-as-code for Snowflake configuration using Terraform or equivalent tooling.

Coordinate change requests through the ITSM process, maintaining audit trails and rollback plans.

Lead post-incident reviews for platform outages or degradations, producing root-cause analyses and remediation actions.

Collaboration & Stakeholder Engagement

Act as the primary escalation point for data engineering and analytics teams on platform issues, access requests, and architecture queries.

Work with data engineers to review pipelines, Snowpark workloads, and external table configurations for performance and security suitability.

Partner with Cloud/Infrastructure teams to…