Senior Data Scientist & Marketing Effectiveness in London

Senior Data Scientist & Marketing Effectiveness in London

London Full-Time 75000 - 90000 £ / year (est.) Home office (partial)
Limelight Health

At a Glance

  • Tasks: Lead impactful data science projects for global clients in various industries.
  • Company: Join Ekimetrics, a forward-thinking company focused on marketing effectiveness.
  • Benefits: Competitive salary, bonuses, flexible working, and comprehensive health support.
  • Other info: Great career growth opportunities and a vibrant, inclusive work culture.
  • Why this job: Make a real difference by transforming data into actionable insights for top brands.
  • Qualifications: 3-5 years in data science, strong skills in Python, R, or SQL.

The predicted salary is between 75000 - 90000 £ per year.

Your responsibilities

  • As a Senior specializing 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 (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 3-5 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, optimising 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.

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.

Benefits

  • Salary £60,000-£75,000 + Bonus 10% + Corporate bonus.
  • Enter into our generous Bonus scheme, reflecting individual performance and corporate, reducing CO2.
  • Regular events and seminars to connect with colleagues.
  • Modern office space in a central London location.
  • Flexible hybrid working policy (2 days a week in office + 20 days’ work from anywhere, remotely).
  • 25 days annual leave + bank holidays, plus an additional 3 days for tenure.
  • Private healthcare, life insurance, and wellbeing support.
  • Group pension scheme.
  • Opportunities for international mobility and career development.
  • Individual performance bonus + company performance bonus.

Ekimetrics offers equal employment opportunities to all, regardless of gender, ethnicity, religion, sexual orientation, social status, disability, or age. Ekimetrics strives to develop an inclusive work environment that reflects diversity within its teams.

Senior Data Scientist & Marketing Effectiveness in London employer: Limelight Health

Ekimetrics is an exceptional employer located in the heart of London, offering a dynamic work culture that fosters creativity and collaboration. With a strong focus on employee growth, you will have access to structured career progression, comprehensive training through Eki.Academy, and opportunities to work with international clients across diverse industries. The company also promotes a healthy work-life balance with flexible hybrid working options, generous leave policies, and a commitment to inclusivity and well-being.

Limelight Health

Contact Details:

Limelight Health Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Data Scientist & Marketing Effectiveness in London

Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend relevant events, and engage with professionals on platforms like LinkedIn. We can’t stress enough how important it is to build relationships that could lead to job opportunities.

Tip Number 2

Prepare for interviews by practising common questions and showcasing your expertise in data science and marketing effectiveness. We recommend using real-world examples from your experience to demonstrate your skills and how you can add value to potential employers.

Tip Number 3

Don’t just apply anywhere; focus on companies that align with your values and career goals. We suggest checking out our website for openings that match your skills and interests, as we’re always looking for talented individuals to join our team!

Tip Number 4

Follow up after interviews! A simple thank-you email can go a long way in leaving a positive impression. We believe this shows your enthusiasm for the role and keeps you top of mind for hiring managers.

We think you need these skills to ace Senior Data Scientist & Marketing Effectiveness in London

Marketing Effectiveness
MMM (Marketing Mix Modelling)
Econometrics
Regression Analysis
Bayesian Statistics
Machine Learning
Data Strategy

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the Senior Data Scientist role. Highlight your experience in marketing effectiveness and data science, and don’t forget to showcase your skills in Python, R, and SQL. We want to see how you can bring value to our team!

Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to tell us why you're passionate about data science and marketing effectiveness. Share specific examples of past projects where you've made an impact, and let your personality come through.

Showcase Your Analytical Skills:In your application, be sure to highlight your analytical skills and experience with econometrics and regression analysis. We love seeing how you’ve translated complex data into actionable insights for clients, so don’t hold back on those details!

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets to the right people. Plus, it shows us you’re serious about joining the StudySmarter team!

How to prepare for a job interview at Limelight Health

Know Your Data Science Stuff

Make sure you brush up on your econometrics, regression analysis, and machine learning techniques. Be ready to discuss how you've applied these methods in past projects, especially in marketing effectiveness. This will show that you can hit the ground running!

Showcase Your Leadership Skills

Since this role involves leading teams, be prepared to share examples of how you've successfully managed projects and mentored junior team members. Highlight your ability to communicate effectively with clients and stakeholders, as this is crucial for building trust and delivering insights.

Prepare for Client-Facing Scenarios

Think about how you would present complex data insights to a non-technical audience. Practice translating technical jargon into clear, actionable recommendations. This will demonstrate your ability to engage with senior stakeholders and make an impact on their decision-making.

Familiarise Yourself with Tools and Platforms

Get comfortable with Python, R, SQL, and any cloud platforms like Databricks or Azure. If you have experience building dashboards or visualisation tools, be ready to discuss those too. Showing your technical proficiency will set you apart from other candidates.