Yu-Cheng Tsai
Principal Machine Learning Scientist, Sage
Yu-Cheng Tsai is a Ph.D. graduate from Princeton University in Mechanical and Aerospace Engineering, where he focused on computational physics. In 2021, he joined Sage AI to evaluate time-series models, develop production models for the invoice general ledger coding classification system, and prototype graph neural network models for accounting workflows and leveraging Generative AI.
Mac Chen
Machine Learning Engineer, Sage
Mac Chen is an engineer with an M.Sc. in Artificial Intelligence from the University of Edinburgh. In 2025, he joined Sage AI and focused on agentic LLM systems, developing reliable tool-calling and evaluation frameworks to measure correctness and robustness, and improving observability to make model behaviour auditable in production.
Bona Chow
Machine Learning Engineer, Sage
Bona holds an MSc in Natural Sciences from the University of Cambridge and began her career in gemmology. During the COVID-19 pandemic, she started learning how to code and studying Data Science in her spare time, quickly becoming fascinated by artificial intelligence and machine learning.
Her dissertation project focused on developing a computer vision algorithm to classify 68 types of gemstones. She is passionate about using her experience to encourage more women and individuals from underrepresented backgrounds to explore opportunities in technology and pursue careers in AI.
Damani Eason
Senior Business Executive, Sage
Damani Eason is a Business Executive to the Chief Technology Officer at Sage. He holds a BSc in Industrial and Systems Engineering from the University of Florida. In his role, he partners with Sage’s AI, product, and engineering teams to shape how emerging technologies are translated into powerful solutions for businesses and developers. He is passionate about ensuring AI is accessible and resonates with the next generation, empowering them to move from using technology to building it.