Principal Data Scientist - Marketing (London Area)

Harnham
London
5 days ago
Create job alert

PRINCIPAL DATA SCIENTIST – HYBRID (London, 3 days a week)

£100,000–£125,000+ based on experience


THE COMPANY

Join a high-impact data science team at a global marketing and customer experience company. As a Principal Data Scientist, you’ll lead the development of end-to-end machine learning solutions that drive business transformation across household-name clients.

This role is ideal for a hands-on technical leader with the ability to shape strategy, influence stakeholders, and still get stuck into code. You’ll partner closely with engineers, strategists, and creatives in a genuinely cross-functional setting.


THE ROLE

As a Principal Data Scientist, you will:

  • Lead the design, implementation, and deployment of advanced ML solutions across the full stack — from data engineering and modelling to cloud deployment (AWS)
  • Scope and steer high-impact projects from ideation to delivery, aligning technical strategy with business objectives
  • Serve as a technical mentor to mid-level and junior data scientists
  • Represent the data science function in client conversations and cross-functional planning
  • Maintain a high bar for clean, testable code and scalable, maintainable solutions
  • Foster a culture of experimentation, velocity, and clear communication


YOUR SKILLS AND EXPERIENCE

Must-Have:

  • 5+ years of experience building and deploying DS/ML products in production
  • Strong Python and SQL skills; deep understanding of ML lifecycle from prototyping to production
  • Hands-on experience with AWS (or similar), Git, and CI/CD pipelines
  • Strong track record leading technical delivery and collaborating with non-technical stakeholders
  • Ability to balance high-level strategic thinking with hands-on implementation
  • Excellent communicator, able to tailor messages for technical, creative, and client audiences


Nice-to-Have:

  • Experience with marketing data, customer-level modelling, or decision science (e.g. uplift, attribution, causal AI, optimization)
  • Familiarity with MLOps tooling (MLflow, FastAPI, Airflow, etc.)
  • Experience designing and interpreting A/B tests or other experimental frameworks
  • Background in consulting, agency, or fast-paced environments where autonomy and adaptability are key


WHY THIS ROLE IS DIFFERENT

This is a senior role with real breadth — not just a leadership position in name. You’ll be hands-on where it counts, shaping projects, mentoring talent, and collaborating across disciplines to create meaningful, measurable impact. Ideal for someone ready to step into a technical leadership role while staying close to the work.


HOW TO APPLY

Interested? Apply via the link on this page with your CV.

Related Jobs

View all jobs

Principal Data Scientist

Principal Data Scientist

Principal Data Scientist

Principal Data Scientist- CPG (Basé à London)

Principal Data Scientist - Marketing (Basé à London)

Principal Data Scientist

Get the latest insights and jobs direct. Sign up for our newsletter.

By subscribing you agree to our privacy policy and terms of service.

Industry Insights

Discover insightful articles, industry insights, expert tips, and curated resources.

Quantum-Enhanced AI in Data Science: Embracing the Next Frontier

Data science has undergone a staggering transformation in the past decade, evolving from a niche academic discipline into a linchpin of modern industry. Across every sector—finance, healthcare, retail, manufacturing—data scientists have become indispensable, leveraging statistical methods and machine learning to turn raw information into actionable insights. Yet as datasets grow ever larger and machine learning models become more computationally expensive, there are genuine questions about how far current methods can be pushed. Enter quantum computing, a nascent but promising technology grounded in the counterintuitive principles of quantum mechanics. Often dismissed just a few years ago as purely experimental, quantum computing is quickly gaining traction as prototypes evolve into cloud-accessible machines. When paired with artificial intelligence—particularly in the realm of data science—the results could be game-changing. From faster model training and complex optimisation to entirely new forms of data analysis, quantum-enhanced AI stands poised to disrupt established practices and create new opportunities. In this article, we will: Explore how data science has reached its current limits in certain areas, and why classical hardware might no longer suffice. Provide an accessible overview of quantum computing concepts and how they differ from classical systems. Examine the potential of quantum-enhanced AI to solve key data science challenges, from data wrangling to advanced machine learning. Highlight real-world applications, emerging job roles, and the skills you need to thrive in this new landscape. Offer actionable steps for data professionals eager to stay ahead of the curve in a rapidly evolving field. Whether you’re a practising data scientist, a student weighing up your future specialisations, or an executive curious about the next technological leap, read on. The quantum era may be closer than you think, and it promises to radically transform the very fabric of data science.

Data Science Jobs at Newly Funded UK Start-ups: Q3 2025 Investment Tracker

Data science has become an indispensable cornerstone of modern business, driving decisions across finance, healthcare, e-commerce, manufacturing, and beyond. As organisations scramble to capitalise on the insights their data can offer, data scientists and machine learning (ML) experts find themselves in ever-higher demand. In the UK, which has cultivated a robust ecosystem of tech innovation and academic excellence, data-driven start-ups continue to blossom—fuelled by venture capital, government grants, and a vibrant talent pool. In this Q3 2025 Investment Tracker, we delve into the newly funded UK start-ups making waves in data science. Beyond celebrating their funding milestones, we’ll explore the job opportunities these investments have created for aspiring and seasoned data scientists alike. Whether you’re interested in advanced analytics, NLP (Natural Language Processing), computer vision, or MLOps, these start-ups might just offer the career leap you’ve been waiting for.

Portfolio Projects That Get You Hired for Data Science Jobs (With Real GitHub Examples)

Data science is at the forefront of innovation, enabling organisations to turn vast amounts of data into actionable insights. Whether it’s building predictive models, performing exploratory analyses, or designing end-to-end machine learning solutions, data scientists are in high demand across every sector. But how can you stand out in a crowded job market? Alongside a solid CV, a well-curated data science portfolio often makes the difference between getting an interview and getting overlooked. In this comprehensive guide, we’ll explore: Why a data science portfolio is essential for job seekers. Selecting projects that align with your target data science roles. Real GitHub examples showcasing best practices. Actionable project ideas you can build right now. Best ways to present your projects and ensure recruiters can find them easily. By the end, you’ll be equipped to craft a compelling portfolio that proves your skills in a tangible way. And when you’re ready for your next career move, remember to upload your CV on DataScience-Jobs.co.uk so that your newly showcased work can be discovered by employers looking for exactly what you have to offer.