Data-Driven Growth Marketing Lead

GCS; Greater London; Hybrid; GBP 83,000 - 124,000; Full time

Job summary

GCS is seeking a data-driven Performance Marketing Manager to lead full-funnel media campaigns across Meta, TikTok, Amazon, Google and programmatic channels in London. You will own audience strategy, first-party data activation, attribution, measurement and ROAS optimisation, driving measurable business outcomes and commercial growth through digital media.

The role is London-based with hybrid work and a 5-month contract, offering hands-on exposure to cutting-edge martech and data-driven decision

Qualifications

• Experience leading performance marketing campaigns across Meta, TikTok, Amazon, Google and programmatic channels.
• Proficiency in audience strategy, first-party data activation and measurement.
• Strong track record optimising ROAS and media effectiveness across channels.

Responsibilities

• Plan and manage full-funnel media campaigns across multiple platforms.
• Own audience segmentation, data activation, attribution and measurement.
• Drive ROAS optimisation and campaign performance to meet business goals.
• Collaborate with creative, analytics and product teams to maximise impact.

Skills

Performance Marketing

Audience Segmentation

First-Party Data

Attribution & Incrementality

ROAS & Metrics

GA4 & Analytics

GTM

Pixels & Server-Side Tracking

Multi-Channel Campaigns

Tools

GA4

Adobe Analytics

GTM

DV360

Facebook CAPI

Job description

GCS is seeking a data-driven Performance Marketing Manager to lead full-funnel media campaigns across Meta, TikTok, Amazon, Google and programmatic channels in London. You will own audience strategy, first-party data activation, attribution, measurement and ROAS optimisation, driving measurable business outcomes and commercial growth through digital media.

The role is London-based with hybrid work and a 5-month contract, offering hands-on exposure to cutting-edge martech and data-driven decision