Customer Data Analyst (Contract)

Harnham; Greater London; On-site; GBP 45,000 - 75,000; Full time

Job summary

Harnham, a leading analytics consultancy, is seeking a hands-on customer analytics specialist to join a high-profile transformation programme in London. You will deliver insight-led dashboards and measurement frameworks that influence customer strategy.

You’ll design reporting from wireframes, work with Snowflake and SQL, and translate complex business needs into actionable analytics, collaborating with global stakeholders.

Qualifications

• Experience building dashboards in Tableau from wireframes and business requirements.
• Strong SQL skills and experience with Snowflake data sources.
• Proven ability to translate customer, CRM, loyalty data into actionable insights.

Responsibilities

• Build and enhance Tableau dashboards using Snowflake data from wireframes.
• Develop customer-focused reporting across acquisition, retention, lifecycle, and campaign metrics.
• Support migration and redevelopment of reporting assets, including decommissioned dashboards.
• Deliver measurement frameworks for customer testing, including test-and-control methodologies.
• Provide analytical insights to help stakeholders understand customer behaviour and optimize decision making.

Skills

Tableau dashboards

SQL

Data storytelling

Stakeholder engagement

Customer analytics

Test-and-learn design

Tableau usage

Tools

Tableau

Snowflake

SQL

Job description

This is an exciting opportunity to join a high-profile customer analytics transformation programme, supporting global stakeholders and delivering insight-led solutions that influence customer strategy. The assignment combines hands-on dashboard development with customer analytics, testing measurement, and data storytelling.

The Company

They are a well-established analytics and customer insight consultancy delivering large-scale transformation projects for global consumer brands. Their teams help organisations better understand customer behaviour, optimise CRM performance, and develop data-driven strategies. This engagement sits within a fast-paced, collaborative environment focused on improving customer measurement and reporting capabilities.

The Role and Deliverables

• Build and enhance Tableau dashboards using data from Snowflake, translating wireframes into scalable reporting solutions.
• Develop customer-focused reporting across acquisition, retention, customer lifecycle, basket value, engagement, and campaign performance metrics.
• Support the migration and redevelopment of reporting assets, including the recreation of previously decommissioned dashboards.
• Deliver measurement frameworks for customer testing activity, including test and control methodologies and incremental performance reporting.
• Provide analytical insight and recommendations that help stakeholders understand customer behaviour and optimise decision making.

Your Skills & Experience

• Strong experience building dashboards in Tableau and working with Snowflake and SQL.
• Ability to design reporting solutions from wireframes and business requirements.
• Experience analysing customer, CRM, loyalty, or marketing performance data in B2C environments.
• Strong understanding of customer segmentation, churn, retention, purchasing behaviour, and customer lifecycle analytics.
• Knowledge of experimentation, test-and-learn methodologies, test/control design, and campaign measurement.
• Ability to communicate insights effectively through data storytelling and stakeholder engagement.
• Comfortable working across multiple industries and translating complex business challenges into analytical solutions.
• Experience working within an agency, consultancy, or client-facing analytics environment is highly beneficial.
• Proactive approach with strong ownership, critical thinking, and problem-solving capability.