Senior Data Scientist

MasterCard; Dublin; On-site; EUR 80,000 - 100,000; Full time

Job summary

A global payment solutions company is looking for a Senior Data Scientist in Dublin to develop AI-driven analytical solutions and machine learning models. The role requires 3-5 years of experience in AI/ML project leadership and strong technical proficiency. Ideal candidates should have expertise in Python, TensorFlow, and cloud platforms. This position offers a dynamic work environment focused on innovation and measurable impact.

Qualifications

• 3 to 5 years proven experience leading AI/ML projects from concept to production.
• Strong proficiency in Python, TensorFlow, PyTorch, and cloud platforms.
• Deep understanding of machine learning, deep learning, NLP, and MLOps.

Responsibilities

• Develop AI-driven analytical solutions for business needs.
• Design and deploy machine learning models.
• Support projects deriving insights from AI systems.

Skills

Python

TensorFlow

PyTorch

AWS

Azure

GCP

Machine Learning

Deep Learning

NLP

MLOps

Job description

Time left to apply End Date: September 30, 2025 (30+ days left to apply)

Job Requisition ID: R-257869

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart, and accessible. Our technology and innovation, partnerships, and networks combine to deliver a unique set of products and services that help people, businesses, and governments realize their greatest potential.

Title and Summary

Senior Data Scientist

Overview:

We are seeking a highly skilled and visionary Senior Data Scientist to support the development of advanced AI solutions that drive innovation and deliver measurable impact across the business. This role involves supporting complex AI initiatives and architecting scalable machine learning systems. The ideal candidate combines deep technical expertise with strategic thinking and strong leadership capabilities.

Role:

• Responsible for developing AI-driven innovative analytical solutions and identifying opportunities to support business and client needs in a quantitative and scalable manner, facilitating informed recommendations and decisions.
• Designing and deploying machine learning models, building intelligent systems, conducting performance analyses, ad hoc reporting, and AI-powered data visualizations.
• Support complex initiatives and projects to derive insights and automation from AI models and systems to solve critical business questions.
• Translate client/stakeholder needs into AI-driven technical solutions in collaboration with internal and external partners and present findings and outcomes to clients/stakeholders.
• Identify rich data sources and oversee the integration, cleaning, and transformation of datasets to ensure consistency and readiness for AI applications.
• Deliver high-quality AI solutions and tools within agreed-upon timelines and budget parameters and conduct post-implementation reviews.
• Guide others to develop sophisticated AI models and engineering solutions (e.g., intelligent agents, recommendation engines, prototypes) utilizing advanced machine learning, deep learning, and generative AI techniques.

All about you:

• 3 to 5 years proven experience leading AI/ML projects from concept to production.
• Strong proficiency in Python, TensorFlow, PyTorch, and cloud platforms (e.g., AWS, Azure, GCP).
• Deep understanding of machine learning, deep learning, NLP, and MLOps.
• Experience with complex neural network architectures and transformer-based models (e.g., BERT, GPT, ViTs) is strongly preferred.
• Experience with data architecture, model deployment, and performance tuning.
• Excellent communication and stakeholder management skills.
• Demonstrated ability to mentor and grow technical teams.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks come with an inherent risk to the organization. Therefore, every person working for or on behalf of Mastercard is responsible for information security and must:

• Abide by Mastercard’s security policies and practices.
• Ensure the confidentiality and integrity of the information being accessed.
• Report any suspected information security violation or breach.
• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

Time left to apply End Date: August 28, 2025 (13 days left to apply)

About Us

Everyone wants easier ways to pay; we invent them.

Checkout lines are slow; we speed them along.

Merchants want more sales; we give them data and insights.

People need financial access; we connect them.

Corporate purchasing is complicated; we make it simple.

Commuters are busy; we speed them on their way.

We help create them.

Small businesses are virtual; we give them access to a world of buyers.