John Heisey
Assistant Director - Machine Learning at EY
Old Toronto, Ontario, Canada
Summary
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Senior🎓
Top SchoolJohn Heisey is an Assistant Director of Machine Learning at EY with a decade of experience applying ML and computational finance expertise to enterprise client solutions. He combines an Honours BSc in Physics and Mathematics from the University of Toronto with an MSc in Computational/Mathematical Finance from McMaster, blending rigorous quantitative foundations with hands-on model development and deployment. At EY he progressed from supervising associate to senior associate and now lead, delivering AI initiatives across the Client Technology Artificial Intelligence group. Comfortable bridging research and production, he brings practical experience teaching and mentoring in academic settings and translating complex models into auditable, business-focused outcomes. An analytical thinker with a health-records background early in his career, he has a nuanced appreciation for data quality and compliance in regulated domains.
10 years of coding experience
6 years of employment as a software developer
Master of Science Computational/Mathematical Finance, Master of Science Computational/Mathematical Finance at McMaster UniversityHonours BSc Physics and Mathematics, Honours BSc Physics and Mathematics at University of Toronto
Stackoverflow
3reputation
392reached
0answers
1question
Github Skills (3)
keras6
tensorflow6
lstm6
Programming languages (1)
Github contributions (5)
JHeisey/Stock-Jump-Predicition-and-Feature-Set-Comparison
May 2018 - Apr 2019
Contributions:8 commits, 7 pushes, 1 branch in 11 months
JHeisey/vae-tensorflow2
Aug 2019 - May 2024
Contributions:1 PR, 1 branch in 4 years 9 months
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