Senior AI Data Scientist — ML Leadership & Engineering

Mastercard; Dublin; On-site; EUR 120,000 - 190,000; Full time

Job summary

Mastercard in Dublin seeks a Lead Data Scientist, AI Engineering to drive advanced machine learning solutions across domains. You will lead predictive modelling, experimentation, and provide technical leadership to deliver measurable business impact.

The role focuses on applying ML, foundation-model representations, and ensemble methods to solve scalable business problems, with mentoring responsibilities and collaboration across product and analytics teams.

Qualifications

• Bachelor's degree in Computer Science, Data Science, Statistics, Mathematics, Engineering, or related quantitative field.
• 8+ years of experience in machine learning, data science, AI, or advanced analytics.
• Experience developing and deploying machine learning models in production environments.
• Experience leading technical projects or teams.

Responsibilities

• Lead the design, development, and deployment of machine learning solutions that solve high-impact business problems.
• Define modelling approaches, experimentation frameworks, and success metrics for AI initiatives.
• Apply foundation-model embeddings and modern machine learning techniques to improve model performance and accelerate development.
• Drive projects from problem definition through model deployment and business impact measurement.
• Establish robust evaluation frameworks and benchmark new approaches against existing solutions.
• Partner with business, product, engineering, and analytics teams to identify and prioritise opportunities.
• Present technical findings and recommendations to stakeholders and senior leadership.
• Mentor and develop data scientists and AI engineers through technical guidance, reviews, and coaching.

Skills

Machine learning

Predictive analytics

Experimentation

Leadership

Communication

Problem solving

Python

SQL

Scikit-Learn

XGBoost

LightGBM

TensorFlow

PyTorch

Databricks

Spark

Azure

AWS

GCP

Education

Bachelor's degree in Computer Science/Math/Statistics

Master's degree in ML/CS

PhD in ML/AI

Tools

Databricks

Spark

Azure

AWS

GCP

Scikit-Learn

XGBoost

LightGBM

TensorFlow

PyTorch

Job description

Mastercard in Dublin seeks a Lead Data Scientist, AI Engineering to drive advanced machine learning solutions across domains. You will lead predictive modelling, experimentation, and provide technical leadership to deliver measurable business impact.

The role focuses on applying ML, foundation-model representations, and ensemble methods to solve scalable business problems, with mentoring responsibilities and collaboration across product and analytics teams.