Senior AI Research Engineer

Cantor Fitzgerald, New York City, United States

What our tracking knows about this posting

Published on 8 July 2026 ยท first appeared in our records on 16 September 2026.

Stable posting: first seen on 16 September 2026, with no abnormal reposting.

This posting shows no salary, while 39% of open postings in the same sector in this country (United States) do.

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This is a model-aware AI research engineering role. FMX is looking for a senior engineer who can build production systems and also understand LLMs below the application layer - transformers, training and fine-tuning methods including those with open weights, inference behavior, evaluation, and failure modes. The role is not aimed at candidates whose AI experience is limited to API wrappers or traditional ML without substantial LLM and agentic AI depth.

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