Senior Consultant

Harnham; Greater London; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Flexible working

Wellbeing focus

Job summary

Harnham is seeking a Senior Analytics Consultant to lead Marketing Mix Modelling projects and drive marketing effectiveness for global brands.

You will deliver MMM, geo-testing, forecasting, and optimization while translating complex data into actionable business recommendations and presenting findings to clients and internal stakeholders.

Qualifications

• Strong track record building and delivering Marketing Mix Models.
• Excellent analytical and numerical skills with ability to explain insights.
• Experience communicating with both technical and non-technical audiences.
• Client-facing with solid stakeholder management experience.

Responsibilities

• Build, develop, and deliver Marketing Mix Models to assess effectiveness.
• Work on MMM, geo-testing, forecasting, and marketing optimisation projects.
• Interpret data and translate findings into actionable recommendations.
• Present results and strategic recommendations to clients and internal teams.
• Manage client relationships throughout project delivery.
• Collaborate with senior consultants in a specialist analytics team.

Skills

MMM modeling

Forecasting

Data interpretation

Stakeholder mgmt

Presentation skills

Econometrics

Tools

Python

SQL

R

Job description

The Company

They are a global analytics and marketing effectiveness consultancy that helps organisations make smarter decisions about their advertising and media investment. Through advanced analytics, independent insight, and data-driven recommendations, they support businesses in improving performance and maximising return on marketing spend.

With an established presence across international markets, they partner with a diverse portfolio of well-known brands and provide expertise across areas including marketing effectiveness, media performance, and commercial analytics. Their collaborative culture encourages continuous learning, professional development, and meaningful client impact.

The Role

As a Senior Analytics Consultant, you will play a key role in delivering advanced marketing analytics projects, with a particular focus on Marketing Mix Modelling (MMM).

Responsibilities include:

• Building, developing, and delivering Marketing Mix Models to assess marketing effectiveness and commercial impact


• Working across a variety of analytical projects including MMM, geo-testing, forecasting, and marketing optimisation


• Interpreting complex datasets and translating findings into actionable business recommendations


• Presenting results and strategic recommendations to internal and external stakeholders


• Managing client relationships and supporting discussions throughout project delivery


• Collaborating closely with senior consultants within a specialist analytics team


• Supporting high-quality project execution from data collection through to final insight delivery

Your Skills & Experience

• Strong commercial experience building and delivering Marketing Mix Models


• Excellent analytical, statistical, and numerical skills


• Ability to interpret data and communicate insights to both technical and non-technical audiences


• Strong stakeholder management and client-facing experience


• Confident presentation and communication skills


• Experience working on marketing effectiveness, forecasting, econometrics, or related analytical projects


• Familiarity with analytical tools and methodologies used within marketing measurement environments

What They Offer

• Opportunity to work directly with senior leaders and experienced analytics professionals


• Exposure to a broad range of marketing effectiveness and optimisation projects


• Clear opportunities for professional growth and career progression


• Collaborative and supportive team environment


• Flexible working approach and commitment to employee wellbeing