Senior AI Engineer

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 AI Engineer

Mastercard's Business & Market Insights (B&MI) group empowers organizations to achieve growth and innovation goals by delivering unparalleled data-driven intelligence and cutting-edge AI solutions. By harnessing proprietary data, frontier generative AI, and global expertise, B&MI helps businesses make smarter, faster, and more impactful decisions. We transform complex, multi-modal data into agentic systems and generative applications that drive measurable business outcomes and sustained competitive advantage.

We are looking for a Senior AI Engineer, Generative AI & ML Engineering for the Operational Intelligence Program within B&MI. This role will expect Gen AI engineer to architect and deliver next-generation LLM, agentic, and multimodal AI systems that enable business growth, elevate customer experience, and ensure secure, scalable, production-grade AI. As a technical leader, you will set the engineering standard for Gen AI development - driving innovation across agentic orchestration, retrieval-augmented generation, LLMOps, and responsible AI - while fostering a culture of continuous learning and engineering excellence.

Roles & Responsibilities

* Architect and lead the development of multi-agent AI systems using frameworks such as Lang Graph, CrewAI, and Auto Gen - enabling autonomous reasoning, tool use, inter-agent coordination, and adaptive decision-making at enterprise scale.

* Design and operationalize multimodal generative AI pipelines that unify text, image, tabular, and graph data using transformer-based architectures (BERT, CLIP, LLaVA, T5, Whisper, GPT-4o, Gemini) for rich, cross-modal intelligence.

* Build production-grade RAG and Graph-RAG systems integrating vector databases (Pinecone, pgvector, Open Search) and knowledge graphs (Neo4j, AWS Neptune) for semantic retrieval, entity-aware reasoning, and grounded generation.

* Lead LLM fine-tuning, prompt engineering, and model alignment strategies - including RLHF, PEFT, LoRA, and instruction tuning - to adapt foundation models for specialized enterprise use cases.

* Establish robust LLMOps and MLOps pipelines on Databricks (AWS) using MLflow, feature stores, prompt evaluation frameworks, model lineage tracking, and continuous retraining workflows to ensure reliable AI delivery.

* Develop high-performance Python backend services for LLM inference orchestration, async job handling, streaming responses, and distributed data workflows supporting high-throughput Gen AI operations.

* Engineer state, memory, and context management subsystems that enable agents to reason temporally, maintain session continuity, manage long-context windows, and coordinate across tools and modalities.

* Implement Responsible AI and AI governance practices - including bias detection, hallucination mitigation, explainability dashboards, output safety guardrails, and compliance with data ethics standards - ensuring transparency and fairness of deployed models.

* Apply traditional ML and statistical modeling (regression, clustering, forecasting, ensemble methods) in hybrid architectures alongside LLMs for interpretable, explainability-first decision systems.

* Continuously research, evaluate, and product ionize advancements in generative modeling, agentic AI, multimodal transformers, and frontier foundation models - benchmarking against enterprise-scale performance and safety requirements.

All About You

* Master's or Bachelor's degree in Computer Science, AI/ML, or Engineering, with significant hands-on experience leading and delivering complex Gen AI or ML engineering programs in production environments.

* Expert-level, hands-on experience designing, building, and deploying large language model (LLM) applications, agentic systems, and RAG pipelines - from prototype to production.

* Deep proficiency with LLM ecosystems:
OpenAI, Anthropic, Gemini, Hugging Face, Lang Chain/Lang Graph, and open-source foundation models (LLaMA, Mistral, Falcon, etc.).

* Strong command of Gen AI engineering patterns: prompt engineering, chain-of-thought reasoning, tool/function calling, vector embeddings, semantic search, and agent memory architectures.

* Solid applied knowledge of ML fundamentals - predictive modeling, deep learning (PyTorch, Tensor Flow), and statistical techniques - used in tandem with Gen AI for hybrid, interpretable systems.

* Excellent Python engineering skills including async programming, API development (FastAPI), and building inference-ready microservices;…