Principal Data Scientist

JR United Kingdom; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading marketing agency is looking for a Principal Data Scientist to oversee data science projects and implement AI solutions. This hybrid role based in London requires strong experience in machine learning and leadership skills. Ideal candidates have a solid academic background in a relevant field and proficiency in Python, SQL, and cloud platforms like AWS. The position offers an opportunity to significantly influence marketing strategies through data-driven insights.

Qualifications

• Proven experience in machine learning applications.
• Expertise in cloud platforms and containerization.

Responsibilities

• Oversee data science projects and guide junior team members.
• Build predictive models for campaign optimization.
• Design and implement AI-powered solutions.

Skills

Machine Learning

Python

SQL

Leadership

Statistical Analysis

Education

Degree in Computer Science, Mathematics, Physics, or related field

Tools

Jupyter notebooks

Pandas

PyTorch

AWS

Docker

Kubernetes

Job description

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Principal Data Scientist, london (city of london)

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Client:

Location:

london (city of london), United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

2

Posted:

22.08.2025

Expiry Date:

06.10.2025

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Job Description:

Lead/Principal Data Scientist

London – Hybrid (3 days a week)

Our client is a precision marketing agency, leveraging data, technology, and creativity to fuel client growth. As part of their Marketing Sciences Data Science Team, you’ll play a pivotal role in revolutionising marketing strategies through cutting-edge Data Science and Machine Learning solutions.

This is still a largely hands on role, with around 20% team leadership.

What You’ll Do

• Oversee data science projects, guide junior team members, and drive innovation.
• Build predictive models for campaign optimisation, customer segmentation, and price elasticity.
• Design and implement AI-powered solutions to solve complex marketing challenges.
• Use machine learning and statistical techniques to analyse trends and improve business outcomes.
• Work with cross-functional teams and present insights to technical and non-technical stakeholders.

What We’re Looking For

• A strong academic background in Computer Science, Mathematics, Physics, or a related field.
• Proven experience in machine learning applications such as recommendations, segmentation, forecasting, and marketing spend optimisation.
• Proficiency in Python, SQL, and Git, with hands-on experience in tools like Jupyter notebooks, Pandas, and PyTorch.
• Expertise in cloud platforms (AWS, Databricks, Snowflake) and containerisation tools (Docker, Kubernetes).
• Strong leadership skills with experience mentoring and managing data science teams.
• Deep knowledge of media measurement techniques, such as media mix modelling.
• Experience with advanced AI techniques, including NLP, GenAI, and CausalAI.
• Familiarity with MLFlow, API design (FastAPI), and dashboard building (Dash).

If this role looks of interest, reach out to Joseph Gregory