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Zachary Hoffman
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Zachary Hoffman

Machine Learning Engineer

Zachary joined SignalFire in 2024 as a Machine Learning Engineer. Prior to joining SignalFire, Zachary was at the startup MoveWorks, where he worked on a generative chatbot framework and search engine models for question answering. He developed document ranking models, created an API ranking service, and was the lead engineer for an enterprise search product.

Zachary graduated from Brown University with both a Bachelor of Science and a master's degree in Computer Science, with a focus on machine learning. He enjoys learning about a variety of topics,including physics, philosophy, and poetry.

In his free time, Zachary likes traveling, hiking, skiing, running, and gaming (both tabletop and digital).

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Zachary Hoffman's Posts

LLM hallucinations aren’t bugs: The real challenges are confidence and context
Must-Read
October 15, 2025

LLM hallucinations aren’t bugs: The real challenges are confidence and context

Discover why AI hallucinations aren’t just bugs but signals of deeper issues in confidence and context. See why OpenAI and Anthropic's research reveals that the future of large language models lies in calibrating confidence but tuning imagination, accuracy, and empathy to fit the task.
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A gold at the Math Olympiad isn’t everything - AGI’s moving finish line
Must-Read
August 18, 2025

A gold at the Math Olympiad isn’t everything - AGI’s moving finish line

An inside look at how LLMs earned gold at the International Math Olympiad and what it reveals about reinforcement learning, inference-time compute, and AGI’s limits.
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From code to capital: Engineering at the heart of venture
Beacon AI
SignalFire
May 30, 2025

From code to capital: Engineering at the heart of venture

Discover why SignalFire has an engineering team—and how it’s redefining venture capital. Learn how our AI-powered tools like Beacon AI help investors source deals, support founders, and turn billions of data points into strategic decisions.
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All Team
Engineering