Senior Data Scientist and Marketing Effectiveness (MMM)

Limelight Health; Greater London; Hybrid; GBP 60,000 - 75,000; Full time

Benefits offered by this job

Bonus (10%+)

Corporate bonus

Private healthcare

Life insurance

Wellbeing support

Group pension

Modern office in central London

Flexible hybrid working policy

25 days annual leave + holidays

Job summary

Ekimetrics in London seeks a Senior Analyst specialising in Data Science & Marketing Effectiveness to lead MMM programmes for international clients. You will manage teams, oversee end-to-end delivery, and ensure actionable insights reach senior stakeholders and C-suite executives.

You will build dashboards, apply econometrics and Bayesian methods, and translate complex results into practical recommendations, driving ROI and client success. Hybrid work with a central London base.

Qualifications

• 3–4 years experience in marketing effectiveness/MMM and analytics
• Degree in Statistics, Econometrics, Data Science, Economics, Applied Mathematics, Marketing Analytics, or related field
• Strong proficiency in Python, R, SQL, or similar tools
• Experience with Databricks, Azure or other cloud/data platforms is a plus
• Solid understanding of econometrics, regression analysis, Bayesian statistics, or other advanced modelling techniques
• Experience translating data and model outputs into actionable business recommendations

Responsibilities

• Lead end-to-end MMM and marketing effectiveness programmes for international clients across industries
• Manage teams and oversee project delivery, ensuring actionable insights for clients
• Build dashboards and visualisation tools to communicate insights using proprietary frameworks
• Translate analytics into clear, business-oriented recommendations for senior stakeholders
• Support clients in optimising marketing spend and understanding campaign performance

Skills

Programming in Python

R

SQL

Data science

MMM analytics

Big data handling

Stakeholder storytelling

Education

Bachelor's or Master's in Statistics/Econometrics/Data Science/Economics/Applied Math

Tools

Databricks

Azure

Job description

Overview

Ekimetrics is a global leader in Marketing Effectiveness and AI-powered solutions. Since 2006, we have helped businesses optimise marketing and operations by combining AI with business and tech expertise across four domains: Marketing Effectiveness, Customer Analytics, Operational Excellence, ESG & sustainability. With in-house teams and offices in Paris, London, New York, Hong Kong, and Shanghai, we deliver tailor-made solutions that turn data into real positive impact, leveraging our technology and services. Our mission is to harness AI at scale with responsibility and values-driven work.

Your responsibilities

As a Senior Analyst specialising in Data Science & Marketing Effectiveness, you will lead the delivery of high-impact MMM programmes for international clients across industries such as Auto, Beauty, Retail, and Financial Services. You will manage small teams, oversee end-to-end project delivery, and ensure actionable insights are delivered to clients.

Lead Projects

• Lead end-to-end MMM and marketing effectiveness programs for international clients, from data strategy and collection to modelling, insights, and activation.
• Apply econometrics, regression, Bayesian statistics, and machine learning methods to analyse marketing and customer data.
• Collaborate closely with Managers to understand the project scope, structure, analytical approaches, manage operations and ensure timely delivery.
• Build dashboards and visualisation tools to communicate actionable insights using proprietary Ekimetrics frameworks and best practices.
• Translate complex analytics into clear, business-oriented recommendations for senior stakeholders and C-suite clients.
• Support clients in optimising marketing spend, understanding campaign performance, improving customer segmentation, and maximising ROI.

Client & Account Management

• Serve as the day-to-day operational contact for clients, building trustful relationships and proactively identifying growth opportunities.
• Present findings, recommendations, and actionable insights in client-facing workshops and executive presentations.
• Collaborate closely with managers and partners to develop proposals for new or expanded work, aligned with Ekimetrics’ commercial offerings.

People & Project Leadership

• Lead teams of 3–10 colleagues across multiple projects, ensuring high-quality delivery, client satisfaction, and profitability.
• Mentor and develop junior team members, strengthening technical, analytical, and client-facing competencies.
• Share best practices and contribute to internal knowledge management initiatives.

Practice & Business Growth

• Identify opportunities for account growth and contribute to development with existing and prospective clients.
• Act as an ambassador of Eki culture by supporting transversal initiatives (e.g., Thought Leadership, Knowledge Management, Recruitment and Innovation).
• Champion and role-model our core values: Curiosity, Creativity, Excellence, Transmission, Pleasure.

Your profile

Experience & Technical Skills

• Strong 3–4 years’ experience in marketing effectiveness/MMM and analytics/data science.
• Bachelor’s or master’s degree in Statistics, Econometrics, Data Science, Economics, Applied Mathematics, Marketing Analytics, or related field.
• Strong proficiency in Python, R, SQL, or similar tools.
• Experience with Databricks, Azure, or other cloud/data platforms is a plus.
• Solid understanding of econometrics, regression analysis, Bayesian statistics, or other advanced modelling techniques.
• Experience translating data and model outputs into actionable business recommendations.
• Comfortable handling large datasets, optimizing data pipelines, and delivering high-quality outputs.

• Leadership & Client-Facing Skills
• Excellent communication and storytelling skills for senior stakeholders.
• Demonstrated ability to lead multiple project teams and manage priorities with autonomy.
• Strong strategic thinking, problem-solving mindset, and drive for continuous improvement.
• Supportive team player with a passion for talent development, coaching, and enabling team growth.
• Ability to contribute to impactful thought leadership and forward-thinking perspectives on measurement and marketing effectiveness.

Why join us?

At Ekimetrics, your ideas matter. We embrace an entrepreneurial spirit and a collaborative environment, with a focus on safe, inclusive spaces where you can bring your authentic self. We have pursued CSR and purpose-driven work, and are committed to sustainability through data science and AI. We are proud to be recognised as a Great Place to Work in multiple regions and to be part of initiatives and communities that support growth and innovation.

Career development and growth opportunities

• Lead projects and develop advanced analytical and client-facing skills.
• Structured career progression from Senior Analyst, Manager, Senior Manager and beyond.
• Access to Eki.Academy, including solution-specific training, Climate School courses, and career development programs.
• Exposure to international clients, multiple industries, and high-impact projects.

Compensation and benefits

• Salary £60,000-£75,000 plus 10% bonus and corporate bonus.
• Regular events and seminars to connect with colleagues.
• Modern office space in a central London location.
• Flexible hybrid working policy (2 days in office + 20 days work from anywhere).
• 25 days annual leave plus bank holidays, with an additional 3 days for tenure.
• Private healthcare, life insurance, and wellbeing support.
• Group pension scheme.
• Opportunities for international mobility and career development.

Equal employment opportunities: Ekimetrics is committed to an inclusive work environment that respects diversity and provides equal opportunity for all applicants.