PRINCIPAL CONSULTANT

MediaLab Group; London; Hybrid; GBP 50,000 - 90,000; Full time

Job summary

An established industry player is seeking a Marketing Effectiveness Lead to join their dynamic team. This role involves leading Marketing Mix Modelling projects, ensuring quality control, and delivering actionable insights through advanced measurement solutions. You'll mentor team members while collaborating with clients to align measurement frameworks with their business objectives. The company fosters an entrepreneurial spirit and offers a range of perks, including hybrid working arrangements, generous holiday, and health benefits. If you're passionate about media and marketing, this is an exciting opportunity to make a significant impact in the industry.

Benefits

25 days holiday

Hybrid Working

Private medical insurance

Gym discounts

Enhanced parental leave

Paid charity days

Retail discounts

Flexible working arrangements

Quarterly reviews

Team culture events

Qualifications

• 7+ years in media measurement with MMM/econometrics expertise.
• Strong consulting skills to translate frameworks into strategies.

Responsibilities

• Lead end-to-end Marketing Mix Modelling projects and insights generation.
• Act as a consultant to align measurement frameworks with business challenges.

Skills

Media Measurement

Marketing Mix Modelling (MMM)

Statistical Analysis

Project Management

Consulting Skills

Problem-Solving

Data Interpretation

Communication Skills

Education

Bachelor's Degree

Master's Degree (preferred)

Tools

SQL

R

Python

AWS

GCP

Data Visualization Tools

Job description

JOIN OUR JOURNEY

Medialab is the UK’s leading independent media agency, and one of the fastest growing in the industry. We’re a media agency that’s made differently: purpose-led, data-driven, founder-run and proudly independent.

Our entrepreneurial spirit means success is rewarded and there are no limits to what you can achieve, which our employees agree with, evidenced by being a Campaign ‘Best Place to work’ for the last 4 years in a row. We are IPA Effectiveness accredited, an IPA People-First agency and widely awarded including a double-gold at the 2024 IPA Effectiveness Awards for our work with Laithwaites.

Our independence means we can focus 100% on doing the right thing to secure success for our clients and our brilliant people. We work with a wide variety of clients including Sharps Bedrooms, SunLife, Standard Life, Laithwaites Wine, EMMA, Save the Children, Mind, Guide Dogs, Hovis, Alzheimer’s Society, RNLI and Clearscore.

OUR VALUES

• Commit to Doing the Right Thing (Take ownership and be accountable)

• Help People Flourish (Invest in people)

• Dig Deeper to Understand Better (Data driven curiosity)

OUR COMMITMENT TO YOU

Working at Medialab comes with lots of perks including all the usual things you would expect, such as a competitive salary package, pension, season ticket loans, cycle to work scheme, weekly social events and big summer / end of year parties.

On top of that, we offer extra incentives which make life at Medialab even more rewarding:

• Time to Unwind – 25 days holiday (+ Christmas closure), birthday & mental health day off, flexi-hours, and work abroad scheme.
• Hybrid Working – Balance between home and office. We welcome requests for flexible working arrangements from the commencement of employment.
  Career Growth – Quarterly reviews, CPD Platinum training, mentoring, and leadership support.
• Health & Wellbeing – Private medical insurance, health cash plan, gym discounts, wellbeing apps, and free professional counselling.
• Supporting Families – Enhanced parental leave and life assurance.
• Giving Back – Paid charity days and sustainability initiatives.
• Perks & Rewards – Retail discounts, long-service trips, and an unforgettable team culture.

YOUR NEXT CHALLENGE

This role sits within the Marketing Effectiveness team at Medialab, helping clients understand the true value of their media investments through advanced measurement solutions, statistical modelling, and integrated insights.

Reporting to the Head of Marketing Effectiveness, you will lead modelling workstreams, ensure quality control, and integrate research from multiple sources to deliver actionable insights.

You will play a dual role: supporting and mentoring team members while continuing to develop your own skills alongside industry experts. Our proprietary Apollo platform automates data collection, allowing the modelling team to focus on insight generation and strategic recommendations rather than manual data processing.

HOW YOU WILL MAKE AN IMPACT

• Lead end-to-end Marketing Mix Modelling (MMM) projects, from model development to insights generation and data storytelling.
• Act as a consultant, working with client teams to ensure measurement frameworks align with their business challenges.
• Serve as the key point of contact for a diverse client set, developing sector expertise.
• Develop client presentation materials and communicate complex insights in a clear, actionable way.
• Identify new business opportunities, contribute to pitches, write proposals, and create thought leadership pieces.
• Drive innovation in automated modelling processes, collaborating with engineering teams to enhance efficiency.
• Represent Medialab externally, building strong relationships with clients and industry stakeholders.

WHAT YOU BRING TO THE TEAM

Must Have Skills

• 7+ years’ experience in media measurement & effectiveness, with hands-on Marketing Mix Modelling (MMM)/econometrics expertise.
• Strong consulting and problem-solving skills, with the ability to translate measurement frameworks into business growth strategies.
• Experience in managing and mentoring other consultants/data scientists.
• Solid understanding of advertising and media planning, working closely with planners and buyers.
• Proven track record in statistical analysis, with the ability to interpret large datasets using various tools.
• Strong project management skills, overseeing the end-to-end delivery of modelling projects.
• Passion for media, marketing, and emerging measurement challenges.

Nice to Have Skills

• Ability to interpret client needs and apply commercially relevant analytical solutions.
• Excellent communication skills, with the ability to simplify complex data for all levels of an organization.
• Curiosity and innovation, exploring new approaches and data sources to improve insights.
• Comfortable working with SQL, R/Python, AWS/GCP, or visualization tools.
• Experience with model automation and system integration is a plus.
• Familiarity with the charity and financial services sectors is beneficial.