Senior Data Engineer

The Role

We’re looking for a hands-on Data Engineer to join a growing data team working across AdTech / MarTech.

This role is focused on building and optimising data pipelines and models within Snowflake, working with large-scale marketing and media datasets across multiple platforms.

You’ll play a key role in shaping how data is ingested, transformed, and structured for analytics and activation, working with complex, often messy datasets from across the media ecosystem.

What You’ll Be Doing

  • Build and maintain data pipelines into Snowflake using modern ELT practices
  • Develop scalable data models and views using dbt
  • Ingest and integrate data from multiple marketing platforms (APIs, batch, streaming)
  • Work with datasets from DSPs, paid social, and search platforms
  • Blend and transform data across multiple sources into unified datasets
  • Ensure data quality, integrity, and reliability across pipelines
  • Troubleshoot and optimise existing pipelines and workflows
  • Support downstream use cases including BI dashboards and analytics

Must-Have Skills

  • Strong hands-on experience with Snowflake (building views, tables, data models)
  • Proven experience using dbt in production environments
  • Advanced SQL skills
  • Experience with Python for data processing
  • Working knowledge of AWS (S3, Glue, Lambda or similar)

Domain Experience (Critical)

  • Background in Media, AdTech, or MarTech environments
  • Experience working with data from:
  • DSPs (e.g. DV360, The Trade Desk)
  • Paid Social (Meta, TikTok, LinkedIn Ads)
  • Google Ads
  • Strong understanding of how marketing data flows end-to-end

What We’re Looking For

  • Experience building end-to-end data pipelines
  • Strong exposure to API-based data ingestion
  • Experience handling large, messy, and fragmented datasets
  • Ability to create clean, structured datasets for reporting and analytics
  • Comfortable working in a fast-paced, evolving data environment

Nice to Have

  • Experience with Airflow or Dagster
  • Working with JSON / semi-structured data
  • Familiarity with CI/CD pipelines and Git

Why Join

  • Work with high-volume, real-world marketing data across multiple platforms
  • Opportunity to own and shape data models and pipelines
  • Exposure to modern data stack (Snowflake + dbt + cloud)
  • Fast-paced environment with strong growth and learning opportunities

Job Details

Company
DATAHEAD
Location
London Area, United Kingdom
Posted