Jocelyn D'Arcy in

Jocelyn D'Arcy

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Entrpreneurd at Poindexter Labs
📍 London, England, United Kingdom

Jocelyn is the founder of Poindexter Labs, a UK-based studio that builds high-fidelity STEM reasoning datasets to evaluate and train advanced AI models. An alumna of the University of Oxford and University of Cambridge, she leverages her expertise in data analytics and mathematics to push AI beyond pattern-matching toward proof-level reasoning.

Her background includes pivotal roles in education, such as Chief of Staff at The National Mathematics and Science College, where she designed an award-winning STEM Communication program. Jocelyn is passionate about the connection between data and effective learning, exploring how analytics can enhance educational outcomes and student development.

She has a specific interest in competitive mathematics, seeking out challenging olympiad-level problems to test the limits of AI reasoning.

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Experience
17 Years
Current Role
Entrpreneurd
Location
London, England, United Kingdom
Personality Overview

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Communication Style
Decision Approach
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Priorities

Topics Jocelyn cares about

AI Reasoning
Her company, Poindexter Labs, designs datasets and evaluations to push AI models toward "proof-level reasoning, " moving beyond simple pattern matching.
AI Evaluation
She builds evaluation benchmarks and rubrics with domain experts to rigorously test the capabilities and limitations of large language models.
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Career

Work history

7-2025
Entrpreneurd
Poindexter Labs
1-2025 - 7-2025
Technical Project Manager
Labelbox
5-2024 - 3-2025
AI Assessor and Senior Reviewer
Scale AI
3-2022 - 3-2025
Associate
The University Guys
9-2021 - 12-2024
Chief of Staff
The National Mathematics and Science College
In the press

Media appearances

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Education
2010 - 2014
Master of Science (MSc)
University of Oxford
2004 - 2005
Economics
University of Cambridge
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

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