IC Data Engineer

Senior Data Engineer (Contract)  Outside IR35

Location:

London (Hybrid   2 days per week on-site, mandatory )

Contract:

Initial 6 months with strong likelihood of extension
IR35:  Outside IR35

We're working with an established, data-driven business looking for a  Senior Data Engineer  to join a small, high-impact data team. This is an opportunity for a hands-on technical specialist to take ownership of a critical data platform, improving existing infrastructure while building scalable foundations for the future.
This role is ideal for someone who enjoys solving complex data engineering challenges, has strong opinions on best practice, and is comfortable working independently while partnering closely with business stakeholders.

What you'll be doing  Design, build and optimise end-to-end data pipelines into  Google Big Query
Integrate data from CRM and digital marketing platforms, including  Hub Spot, Google Ads, Meta Ads, Microsoft Ads and Linked In Ads
Improve the reliability, scalability and performance of existing data infrastructure
Own data quality, monitoring, alerting, documentation and pipeline governance
Reduce technical debt and establish engineering best practices that will support future growth
Work closely with analytics, marketing and business stakeholders to ensure data is accurate, trusted and fit for reporting
Make recommendations on architecture, tooling and implementation where appropriate, working within a pragmatic budget
What we're looking for  8+ years of hands-on Data Engineering experience
Strong expertise with  Google Cloud Platform (GCP)  and  Big Query
Proven experience building end-to-end batch data pipelines from scratch
Experience integrating APIs from marketing and CRM platforms
Strong understanding of data modelling, pipeline reliability and data quality
Experience implementing monitoring, alerting and documentation standards
Comfortable working as a senior individual contributor in a lean team
Someone who enjoys owning solutions, challenging ideas and influencing technical direction
Nice to have  Experience working with GA4 data
Exposure to Cloud Functions or other GCP services
Understanding of digital marketing data and attribution models