Senior Data Scientist

Company: Croud
Apply for the Senior Data Scientist
Location: London
Job Description:

Overview

In this Senior Data Scientist role at Croud, you will lead data science and ML projects that deliver measurable business impact for a roster of global brands. You’ll work across a growing analytics practice, applying advanced methods and AI-driven approaches to client challenges and product development. You’ll collaborate with clients, analysts and engineers to scale solutions and share insights. This is a chance to shape analytics capabilities and drive innovative marketing outcomes.

Pay / Benefits

  • Sabbatical after 7 years
  • 25 days holiday
  • Health & Wellbeing contribution
  • Pension
  • Life insurance and income protection
  • Flexible working options

Responsibilities

  • Manage data science and ML projects to meet technical goals within timeframes
  • Communicate complex methods clearly to clients and team members
  • Produce clear insights through visualizations and metrics for non-technical users
  • Interface with clients to secure data inputs and align on service application
  • Explore and model large datasets using Python, SQL and related tools
  • Leverage Claude Code and other AI tools to enhance Croud solutions
  • Lead data exploration, model estimation and validation
  • Write clean, robust code for data science pipelines
  • Discuss data science aspects with technical and commercial teams
  • Collaborate with data engineers to ensure scalable algorithms
  • Explain and propagate the analytics team’s methodologies to clients and stakeholders
  • Allocate around 20% of time to pure innovation supporting product development and agentic AI goals

Key requirements

  • Master’s degree or PhD, or relevant quantitative experience
  • Proven experience in applied machine learning in a full-time role
  • Knowledge of Python, ML libraries and SQL
  • Experience using LLMs to assist in safe and stable code writing
  • Strong statistical knowledge
  • Ability to communicate data analysis results effectively
  • High proficiency in English writing and speaking
  • Strong client services skills and ability to manage delivery expectations autonomously
  • Good time management and organizational abilities
  • Clear communicator with both technical and non-technical audiences
  • Curiosity and willingness to learn rapidly
  • Detail-oriented with good judgment
  • Python and ML libraries
  • SQL
  • Experience with LLMs (Claude Code)

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Posted: October 11th, 2026