AI Engineer ||
Mastercard2 days ago
O'Fallon, MO, USAMid Level
H1B sponsor
Base Salary
$92k - $147k/yr
Responsibilities
- Identify and drive high-impact AI use cases across engineering and business workflows.
- Design and deliver end-to-end AI solutions using LLMs, orchestration, automation, and intelligent agents.
- Develop prompt frameworks, orchestration layers, integrations, retrieval approaches, and context-management strategies.
- Prepare structured and unstructured data for LLM consumption, including chunking and context-window optimization.
- Build reusable AI-assisted coding, testing, and documentation patterns and measure productivity impact.
- Build data pipelines, APIs, services, and applications that embed scalable and maintainable AI capabilities.
Requirements
- Strong foundation in AI/ML concepts, LLMs, and modern AI systems.
- Hands-on experience with prompt engineering, LLM orchestration frameworks, context design, chunking strategies, and retrieval techniques.
- Experience working with structured and unstructured data for AI use cases.
- Solid software engineering and system design experience.
- Ability to build end-to-end AI solutions spanning data, context, LLMs, and applications.
- Pragmatic focus on quality, usability, scalability, and business impact.
Benefits
- Full-time employees generally receive medical, prescription drug, dental, vision, disability, and life insurance; flexible spending and health savings accounts; paid leave; vacation and personal days; paid U.S. holidays; 401(k) matching; and other benefits.
- Benefits may include 16 weeks of new parent leave, up to 20 days of bereavement leave, 80 hours of Paid Sick and Safe Time, fitness reimbursement or on-site fitness facilities, and tuition reimbursement.
- The listed position is intended to be filled by 02/02/2027, or as soon as possible if that date has passed.
- The listed work location is O'Fallon, Missouri.
Categories
About Mastercard
Mastercard builds and operates a global payments network used by banks, merchants, fintechs, and governments, offering card processing, real-time payments, tokenization, and fraud/risk services. It generates revenue from transaction processing and assessment/service fees across more than 200 countries and territories. Founded in 1966 and headquartered in Purchase, New York, Mastercard is a public company listed on the NYSE (ticker: MA).