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Senior Data Scientist - Ad Tech Fraud Detection & Prevention with AI/ML Focus and Privacy Expertise



Administration, Software Engineering, Accounting & Finance, Data Science
Posted on Wednesday, April 26, 2023

Senior Data Scientist - Ad Tech Fraud Detection & Prevention with AI/ML Focus and Privacy Expertise

Employment Type: Full-Time Location: UK, Remote

Minimum Experience: Experienced

Pixalate is an online trust and safety platform that protects businesses, consumers and children from deceptive, fraudulent and non-compliant mobile, CTV apps and websites.

Our software and data have been used to unearth multiple high profile criminal and illegal surveillance cases including:

Our team of lawyers, data scientists, engineers, economists and researchers span globally with presence in California, New York, Washington DC , London and Singapore.


In this role, you will collaborate closely with data scientists, big data engineers, product managers, and marketers, as well as legal, engineering, marketing, sales, and customer success teams. You will analyze large datasets, develop AI/ML algorithms, and derive insights to address complex business problems in fraud detection/prevention and advertising data analytics, while ensuring compliance with global privacy and data protection laws. As the ad tech industry undergoes a major shift towards greater transparency and protection against fraud, Pixalate is uniquely positioned as the first MRC-accredited, omni-channel fraud protection provider focused on reducing fraud, not just measuring it.


  • BS in Computer Science, Electrical Engineering, Math, Physics, or other quantitative fields
  • 4+ years of professional experience in data science, solving complex problems with a focus on AI/ML techniques and privacy expertise
  • Experience in implementing AI/ML algorithms, including deep learning and reinforcement learning models, while ensuring compliance with privacy and data protection laws
  • Ability to work independently and solve complex problems with minimal supervision
  • Strong critical thinking and ability to generate intuitive conclusions from complex datasets
  • Excellent verbal and written communication skills, with a high attention to detail
  • Proficiency in SQL and Python (experience with R is a plus)
  • Solid understanding of machine learning algorithms, basic probability, and statistics
  • Familiarity with AI/ML tools and frameworks (e.g., OpenAI, ChatGPT, TensorFlow, PyTorch, Keras)
  • Familiarity with online advertising, advertising fraud, and global privacy and data protection laws, with a focus on European privacy and data protection laws and regulations
  • Preferred MS or PhD degree in Computer Science, Electrical Engineering, Math, Statistics, or other quantitative fields with a focus on AI/ML and privacy expertise
  • Preferred Familiarity with Amazon AWS, UNIX CLI, and programming in Scala, Java, and/or C/C++ (a plus)
  • Preferred Experience providing thought leadership in privacy and data protection, particularly in the context of the European regulatory landscape and beyond
  • Preferred Proven track record of integrating privacy-by-design principles into data science projects and products
  • Preferred Knowledge of de-identification, anonymization, and pseudonymization techniques for data processing and analysis
  • Preferred Familiarity with privacy-enhancing technologies (PETs) and their applications in AI/ML projects
  • Preferred Experience working with data protection authorities and managing data protection impact assessments (DPIAs) in a data-driven organization
  • Preferred Strong understanding of GDPR, ePrivacy, and other relevant privacy and data protection legislation, as well as global privacy frameworks and best practices


  • Serve as a subject matter expert on privacy and data protection, working closely with legal, engineering, data science, marketing, sales, and customer success teams to enhance privacy-related services and identify customer needs
  • Leverage advanced machine learning techniques, including deep learning and reinforcement learning, to improve fraud detection and prevention models while adhering to privacy regulations
  • Research and implement state-of-the-art AI/ML algorithms to stay ahead of emerging fraud patterns and trends, maintaining compliance with privacy laws and regulations
  • Provide technical support for existing products by resolving complex client issues through coordinated tickets and data analysis
  • Identify new types of fraud and develop early detection/prevention algorithms using AI/ML techniques
  • Create visualizations, document methodologies, and effectively communicate research insights to product management and marketing teams, while maintaining privacy compliance
  • Automate report generation for recurring requests using scripts
  • Develop and test statistical hypotheses to support data-driven decision-making
  • Collaborate with data scientists, analysts, product managers, and engineers to apply quantitative data analysis expertise and create AI/ML-driven innovative solutions, ensuring privacy and data protection compliance
  • Stay up-to-date with the latest advancements in AI/ML, privacy regulations, and industry trends to inform data science strategy and approach
  • Mentor and guide junior data scientists and engineers, sharing knowledge and fostering a culture of learning and growth


We focus on doing things differently and challenge each other to be the best we can be.

  • Generous benefits package including 25 days holiday plus Bank holidays
  • Defined contribution Pension scheme
  • Monthly internet reimbursement
  • Casual, remote work environment
  • Hybrid, flexible hours
  • Opportunity for advancement
  • Fun annual team events
  • Being part of a high performing team that wants to win and have fun doing it
  • Extremely competitive compensation