Senior Data Scientist, Marketing Measurement in London

Remote, London·Added 11 days ago (last checked 26 Oct)

Agency

Harnham

136 open roles

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Our summary

Salary: £70,000 - £90,000 a year
About £4,260 - £5,230 a month after tax.
Work mode: Remote (London)
Contract: Permanent
Experience: Senior level

Skills

Nice to have

Ecommerce

Harnham is hiring for this role in several places. This vacancy is in London.

Requirements

What we're looking for

Strong commercial experience in Marketing Measurement, Marketing Mix Modelling, incrementality testing, or causal inference.
Deep understanding of experimentation methodologies, statistical analysis, and hypothesis testing.
Experience working with paid media performance data and digital marketing platforms.
Strong SQL skills and experience working with modern cloud data environments.
Strong Python expertise for analysis, modelling, and data science workflows.
Experience building predictive models, including customer lifetime value modelling.
Ability to influence business decisions through clear communication and data-driven recommendations.
Comfortable operating in a fast-paced environment with a high degree of ownership.

Nice to have

Experience with Bayesian modelling frameworks such as PyMC.
Exposure to value-based bidding and marketing attribution challenges.
Experience within consumer, marketplace, travel, ecommerce, or subscription-based businesses.
Knowledge of uplift modelling and advanced customer targeting approaches.

The role

Senior Data Scientist, Marketing Measurement
Remote (UK) | £70,000 - £90,000 + Bonus + Benefits
This is an exciting opportunity for a Senior Data Scientist to shape how marketing investment decisions are made within a growing digital business. You'll own the marketing measurement strategy, combining experimentation, incrementality testing, marketing mix modelling, and predictive analytics to influence multi-million-pound budget decisions. The role offers significant visibility, autonomy, and the chance to work at the intersection of Data Science, Marketing, and AI.
The Company
They are a fast-growing consumer-focused business operating in a highly data-driven environment. With a strong digital presence and a commitment to evidence-based decision making, they use advanced analytics to drive sustainable growth and optimise customer acquisition. Their collaborative culture encourages innovation, experimentation, and continuous learning. Operating remotely across the UK, they offer flexibility alongside meaningful career development opportunities.
The Role
You will:

What you'll do

Own and enhance the organisation's Marketing Mix Modelling framework using modern methodologies and tools.
Design, analyse, and validate incrementality and experimentation programmes across marketing channels.
Translate complex modelling outputs into clear budget recommendations and commercial actions.
Partner closely with marketing stakeholders to improve channel performance and investment decisions.
Develop and maintain customer lifetime value (LTV) models to support acquisition and retention strategies.
Apply causal inference techniques to improve attribution and marketing measurement.
Leverage AI tools to accelerate analysis, experimentation design, and insight generation while maintaining analytical rigour.
Communicate findings and recommendations to both technical and non-technical audiences.

What They Offer

Clear opportunities to take ownership of high-impact data science initiatives and develop your career within a growing analytics function.

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How to Apply
If you're an experienced Senior Data Scientist with expertise in marketing measurement, experimentation, and advanced analytics, apply today to learn more about this opportunity.