Senior Marketing Analyst

Harnham; Slough; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

Harnham is seeking a Senior Marketing Analyst in London. This client-facing role focuses on measurement, MMM/Econometrics, and delivering commercial impact across campaigns.

You will lead analytics across multiple client accounts, interpret performance, and work with large datasets to drive actionable insights while challenging MMM providers and collaborating with agencies.

Qualifications

• Extensive experience in marketing analytics.
• Strong understanding of MMM / econometrics principles (hands-on or closely involved).
• Ability to confidently engage with clients and explain complex ideas clearly.

Responsibilities

• Leading analytics across multiple client accounts and campaigns.
• Interpreting campaign performance and identifying actionable insights.
• Working with large behavioural and transactional datasets.
• Advising clients on measurement approaches and campaign effectiveness.
• Engaging with external MMM providers: challenging assumptions, understanding limitations, and influencing decisions.
• Supporting broader analytics strategy across a network of agencies.

Skills

Marketing analytics

MMM / econometrics

Client engagement

Job description

Senior Marketing Analyst

£70,000-£90,000

London (Hybrid – 4x Days a Week in office, White City)

THE COMPANY

This is an opportunity to join a global marketing and data powerhouse operating at the intersection of data, technology, and advertising, part of a wider international group; they help major brands understand their customers, optimise digital media, and ultimately drive real commercial impact (not just clicks). Think sophisticated audience targeting, campaign personalisation, and deep measurement across online behaviour. Their analytics team is growing (5 → 8), led by a highly respected Analytics Director, with strong exposure to senior leadership and clients across retail and food delivery.

THE ROLE

This is a senior, client-facing analytics role with a strong focus on measurement, effectiveness, and commercial impact. You’ll act as a trusted analytics voice in client conversations, particularly around Marketing Mix Modelling (MMM) and econometrics

Key responsibilities include:

• Leading analytics across multiple client accounts and campaigns
• Interpreting campaign performance and identifying actionable insights
• Working with large behavioural and transactional datasets
• Advising clients on measurement approaches and campaign effectiveness
• Engaging with external MMM providers: challenging assumptions, understanding limitations, and influencing decisions
• Supporting broader analytics strategy across a network of agencies

This is a hands‑on role with strategic exposure; ideal for someone who enjoys both deep analysis and stakeholder engagement.

YOUR SKILLS AND EXPERIENCE

• Extensive experience in marketing analytics
• Strong understanding of MMM / econometrics principles (hands‑on or closely involved)
• Ability to confidently engage with clients and explain complex ideas clearly

THE BENEFITS

• £70,000-£90,000