Yi T
Lead, Post-Training at Cohere
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolYi T is a Lead on Cohere’s post-training team with eight years of experience building and shipping large language models and production ML systems. At Cohere he’s driven post-training efforts across Command family models, translating research insights into scalable model fine-tuning and alignment workflows. His background blends top-tier academic research (first-author NeurIPS spotlight and multiple ACL/ICLR/EMNLP publications) with hands-on industry impact—from improving moderation classifiers at Facebook to simulation and safety work at Waymo. A former infantry officer awarded Sword of Honour, he brings disciplined leadership and operational rigor to cross-functional ML programs. Based in London, he pairs deep technical craftsmanship with policy and strategy exposure from government and academic roles, making him adept at navigating high-stakes, multidisciplinary AI initiatives.
8 years of coding experience
5 years of employment as a software developer
Bachelor of Science Computer Science and Ethics Politics Economics, Bachelor of Science Computer Science and Ethics Politics Economics at Yale UniversityRaffles Institution
Github Skills (34)
dialogue-systems10
chatbot10
conversation9
tooling9
large-language-models9
conversational-ai9
nlp9
conversational-bots9
machine-learning8
llm8
modeling7
pointer7
topic-modeling6
python6
summarization6
Programming languages (3)
Github contributions (5)
tanyichern/social-biases-contextualized
Oct 2019 - Aug 2021
Contributions:5 commits, 4 pushes, 1 branch in 1 year 9 months
cohere-ai/sandbox-conversant-lib
Nov 2022 - Mar 2023
Conversational AI tooling & personas built on Cohere's LLMs
Contributions:64 reviews, 90 commits, 68 PRs in 4 months
dialogue-generationdialogue-systemspersonaschatbotsconversational-bots
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