Senior AI Engineer

1 week ago

Toronto, Ontario, Canada Mastercard Full time

Job Title:

Senior AI Engineer

Overview:

About Mastercard
Mastercard is a global technology company in the payments industry, connecting billions of consumers, financial institutions, merchants, governments, and businesses worldwide. We are driving the future of commerce by enabling secure, simple, and smart transactions. Artificial Intelligence is at the core of our strategy to make Mastercard stronger and commerce safer, smarter and more personal.

The Role:
At Mastercard, we're building next-generation AI-powered platforms to drive innovation and impact. As a Senior AI Engineer, you'll work with cutting-edge tools, large language models (LLMs), and emerging frameworks to develop intelligent systems. You'll collaborate with senior engineers, data scientists, and product teams—gaining hands-on experience while contributing to real-world AI solutions.
You'll help implement Agentic AI systems, develop backend services, and explore new AI capabilities. Your focus will include prompt engineering, guardrail design, and experimentation to ensure safe, scalable, and effective AI applications.

Key Responsibilities

•  Develop and enhance AI agents and backend systems for Mastercard's AI platform

•  Evaluate LLMs and emerging technologies to identify innovation opportunities

•  Design and optimize prompts for LLMs

•  Implement safeguards to ensure secure, ethical AI responses

•  Build APIs, microservices, and data integrations for AI features

•  Write clean, maintainable code following industry best practices

•  Stay current with advancements in AI and software engineering

All About You:

•  Strong understanding of AI/ML concepts and enthusiasm for generative AI

•  Experience with Python and backend frameworks (e.g., FastAPI, Flask, )

•  Knowledge of REST APIs and cloud platforms (AWS, Azure, GCP)

•  Strong analytical skills and curiosity for exploring new AI capabilities

•  Collaborative mindset and openness to feedback and mentorship

•  Interest in prompt engineering, AI safety, and scalable deployment

Why Join Us?
At Mastercard, you'll help shape the future of AI in global commerce—solving complex challenges at scale, driving financial inclusion, and reinforcing the trust and security that define our brand. You'll work with world-class talent, cutting-edge technologies, and will make a lasting impact.

#AI1To find US Salary Ranges, visit People Place. Under the Compensation tab, select "Salary Structures." Within the text of "Salary Structures," click on the link "salary structures 2025," through which you will be able to access the salary ranges for each Mastercard job family. For more information regarding US benefits, visit People Place and review the Benefits tab and the Time Off & Leave tab.

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