Senior Data Scientist - Media Optimization

Group M Worldwide Inc.; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A leading company in data products and technology seeks a Senior Data Scientist to enhance proprietary algorithms and innovate with ML/AI. You will work within a collaborative team to solve complex problems and drive innovation in media optimization, leveraging your expertise in data science and cloud technologies.

Qualifications

• Hands-on experience with optimization algorithms or related ML disciplines.
• Proficiency in Python and SQL.
• Experience with cloud technologies (AWS or GCP).

Responsibilities

• Improve existing algorithms and develop new features.
• Design and contribute to machine learning pipelines.
• Collaborate with stakeholders for technical solutions.

Skills

Optimization algorithms

Statistical knowledge

Python

SQL

Cloud technologies

Machine learning knowledge

Effective communication

Education

Bachelor's or master's degree in Data Science, Computer Science, Engineering, Statistics

Tools

AWS

GCP

Airflow

Job description

Title: Senior Data Scientist, Media Optimization

Location: London

Reporting to: VP, Data Science, Optimization

Who we are:

Choreograph is WPP’s global data products and technology company. We’re on a mission to transform marketing by building the fastest, most connected data platform that bridges marketing strategy to scaled activation.

We work with agencies and clients to transform the value of data by bringing together technology, data, and analytics capabilities. We deliver this through the Open Media Studio, an AI-enabled media and data platform for the next era of advertising.

We’re endlessly curious. Our team of thinkers, builders, creators, and problem solvers are over 1,000 strong, across 20 markets around the world.

About the Media Optimization product:

The Media Optimization product is an AI-powered optimization platform that enables media traders to deploy complex buying strategies and deliver better outcomes for our clients, at scale.

This is no start-up. We’re already trusted by our clients to manage hundreds of millions of media spend.

At the heart of the product are our proprietary algorithms, developed in-house and refined over time. These algorithms enable the platform to make budget and targeting adjustments that improve campaign performance every day for clients worldwide.

Our ambition as a Data Science team is to further extend this competitive advantage by innovating our algorithms and expanding into more digital advertising platforms.

About this role:

We are seeking a Senior Data Scientist to enhance our proprietary algorithms and innovate the product with the latest advances in ML/AI. Reporting to the VP of Data Science, you will join a small but growing team of Data Scientists.

The ideal candidate will have a background in optimization (algorithms or related ML disciplines), strong statistical knowledge, and hands-on cloud technology experience. You should be truly, technically competent to learn complex systems quickly, customize source code, add new features, and code from scratch. Model deployment and software development experience are highly desirable, but support from our engineering team will be available.

We value team players passionate about applying Data Science to solve complex problems and drive innovation. In this role, you will solve cutting-edge problems, improve client performance, and collaborate with experienced developers, product managers, and data scientists to build scalable, global products.

Key Responsibilities:

• Further improve existing algorithms and develop new DS features
• Design and contribute to end-to-end machine learning pipelines, from data collection to model deployment and testing
• Implement explainability frameworks for model transparency and compliance
• Collaborate with stakeholders to translate business needs into technical solutions
• Conduct rigorous model testing and validation
• Prepare documentation and reports communicating complex insights accessibly
• Stay updated with academic research and industry advancements in optimization and AI/ML
• Share knowledge and support the wider team and community to drive innovation

Essential Qualifications:

• Bachelor's or master's degree in Data Science, Computer Science, Engineering, Statistics, or a related field
• Hands-on experience with optimization algorithms or related ML disciplines (practical, real-world data problem-solving preferred)
• Proficiency in Python (and ML frameworks) and SQL
• Experience with cloud technologies (AWS or GCP)
• Exposure to model deployment and software development
• Strong statistical and machine learning knowledge
• Effective communication skills for collaboration across technical and non-technical teams

Highly Desirable Qualifications:

• Hands-on experience with Airflow
• Commercial software development experience
• ML Ops experience

This is a UK-based role requiring the right to work in the UK.