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Senior AI Engineer

O'Fallon, Missouri💼 Full-time🗓 2026-07-24 → 2026-09-26

Core

Architect and deliver next-generation LLM, agentic, and multimodal AI systems for business growth and customer experience within Mastercard's Business & Market Insights group.

Role type

Senior IC Generative AI & ML Engineer

Builds

Production-grade agentic orchestration, RAG/Graph-RAG systems, multimodal pipelines, and high-throughput inference services.

Domain

Financial services / Generative AI / Enterprise Intelligence

Deliverable

production ML models

Required skills

LLM application architecture, agentic system design, RAG implementation, LLM fine-tuning, Python backend engineering, cloud AI infrastructure, MLOps/LLMOps, vector databases, knowledge graphs

Preferred skills

Traditional ML/statistical modeling, hybrid AI architectures, responsible AI governance

Technologies

LangGraph, CrewAI, AutoGen, Pinecone, pgvector, Neo4j, AWS Neptune, Databricks, MLflow, PyTorch, FastAPI, AWS SageMaker, Bedrock, Azure OpenAI, GCP Vertex AI

Responsibilities

Architect multi-agent AI systems; Design multimodal generative AI pipelines; Build production-grade RAG and Graph-RAG systems; Lead LLM fine-tuning and alignment; Establish LLMOps and MLOps pipelines; Develop high-performance Python backend services; Engineer state and context management subsystems; Implement Responsible AI and governance practices.

Seniority

Senior, hands-on IC

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