Vincent Hellendoorn is a research scientist at Google DeepMind and former assistant professor at CMU with 11 years of experience at the intersection of AI for code, reinforcement learning, and thinking-efficiency research. He brings a strong academic background (PhD UC Davis, MSc/TU Delft) and a track record of applied ML engineering, including contributions to high-profile open-source work like GPT-NeoX where he optimized attention mechanisms with Flash Attention and dynamic Alibi caching. At DeepMind he works on Gemini and projects that push both model performance and developer productivity, while his prior academic roles blended rigorous research with practical tooling for software engineering. Known for moving seamlessly between theory and production, he combines deep algorithmic insight with hands-on systems improvements that scale.
11 years of coding experience
1 year of employment as a software developer
PhD, Computer Science, PhD, Computer Science at University of California, Davis
VWO, High School degree, VWO, High School degree at College het Loo
Bachelor's Degree, Computerscience, 8.2, Bachelor's Degree, Computerscience, 8.2 at TU Delft
An implementation of model parallel autoregressive transformers on GPUs, based on the Megatron and DeepSpeed libraries
Role in this project:
ML Engineer
Contributions:1 review, 6 commits, 2 PRs in 1 year 2 months
Contributions summary:Vincent contributed to the implementation and improvement of a model parallel autoregressive transformer, specifically within the context of GPT-NeoX. Their work included integrating Flash Attention, a technique for optimizing attention mechanisms. They also made adjustments to Alibi matrix caching for dynamic sequence lengths and refined other attention-related configurations. Further contributions include the addition of maximum tokens to the interactive mode.
Contributions:2 commits, 3 PRs, 3 pushes in 1 year 3 months
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Vincent Hellendoorn - Research Scientist at Google DeepMind