Fundraising Fox

Ash Lewis

Founder

Cofounder at Fastino

Stanford, California, United States

FoundedFastino

30 Under 30 2026 · AI

About

Ash Lewis is the CEO and co-founder of Fastino, a company developing tools and infrastructure for training small language models (SLMs). The company's work includes Pioneer, a system that automates the SLM fine-tuning lifecycle across synthetic data generation, training, evaluation, deployment, and ongoing improvement on live inference data. Lewis writes about topics including SLMs, encoder architectures, post-training methods, and the deployment of small models at scale.

Cofounder at Fastino

Intro paths

In turn, Ash can intro founders to Fastino's investors below.

Co-founders at Fastino

GM
George MaloneyExecutive Officer, Director
AL
Ashley LewisExecutive Officer, Director
GH
George Hurn-MaloneyFounder

Experience

  1. FastinoCEO & co-foundercurrent2024 — present
  2. Various StartupsCEO / Founder / CTO / Board Advisorcurrent2014 — present

Education

  1. Kelvin Science SchoolHigh School2007 — 2012

Skills & more

JavaScript27Venture Capital22Deep Reinforcement Learning19Python (Programming Language)6Supervised Learning6Machine Learning3Software Development

From Ash's professional profile.

Frequently asked questions

Where does Ash Lewis work?
Ash Lewis is Cofounder at Fastino.
What companies did Ash Lewis found?
Ash Lewis founded Fastino.

Shared employers