Eric X. Email & Phone Number

Cambridge, Massachusetts, US

I lead the engineering organization for HubSpot’s AI product line. We use AI to help millions of businesses grow better.

I run my one-man quantitive investment firm, focusing on taking advantage of what I call “narrative discontinuity”.

I now lead an initiative called MVAI (minimal viable AI) inside Meta. We take a startup mindset to build a brand new AI stack from scratch. Previously I led two large cross functional efforts to move FB's recommendation models (models behind FB Reels) to GPU training and inference. Both increased Reel's top line metrics by more than 10%.

San Francisco, California, US

I manage Feed, Search, ML Platform and Applied ML (modeling) teams at Reddit. Our teams are responsible for core product surfaces (Feed+Search) at Reddit. The teams are also responsible for building the ML platform (feature store, training pipeline, serving infrastructure).My contributions:* put together Reddit’s first ML vision & strategy doc, presented.

Basically the idea and algorithm behind Github CoPilot / OpenAI Codex, but five years ahead of its time. Applied AI (LSTM and large language models) to solve developer productivity. Trained a bunch of neural networks to understand and generate programming code, used large-scale language models and extensive compiler technology to do paragraph-level code.

San Francisco, California, US

* Grew and managed the sleep/wellness engineering team (essentially the Fitbit ML team) 3x, from 5 engineers to a total of 16.* Led the development of two generations of machine learning platforms at Fitbit, from design to production.* Architected systems to split a deep neural net into wearable hardware (DSP) and cloud, to save power and communication.

San Francisco, California, US

Fitbit's SRE team was formed after an embarrassing system meltdown during Christmas time, 2014. I volunteered to join and becoming a founding members of the SRE team after the crisis. I was the tech lead directly under a VP.From scratch, we defined our mission, wrote the team charter, and hired more engineers. A few highlights in my tenure as an SRE lead.*.

Mountain View, CA, US

Together with my team, we manage a data pipeline that processes all Google's display ads data -- that is about 20% of all display ads of the whole Internet.I led a team of four engineers (+PM) in developing a product later became known as Data Driven Attribution (http://doubleclickadvertisers.blogspot.com/2016/02/enable-better-decisions-with-data.html)..

Doctor Of Philosophy (Ph.D.), Artificial Intelligence

Education record

Bachelor’S Degree, Mathematics

Education record