Product Manager · AI Products · Y Combinator Alum

Liam Foster

Product leader obsessed with building AI tools that feel magical. Ex-founder (YC W22, acquired), now leading product at a Series B AI company. I thrive at the intersection of user experience, machine learning, and growth — turning complex AI capabilities into products people love and pay for.

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Years Experience
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Projects
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Skills

Experience

Where I've made an impact

J

Director of Product

Jasper AI · Austin, TX (Remote)

Apr 2023 — Present
Own product strategy for Jasper's core AI writing platform (100K+ paying users)
Launched AI Brand Voice feature driving 23% increase in enterprise upgrades
Reduced churn by 31% through onboarding redesign and activation improvements
Built and managed a team of 6 PMs across 3 product areas
W

Co-Founder & CEO

WriteMind (YC W22) · San Francisco, CA

Jan 2022 — Mar 2023
Built AI writing assistant from 0 to 15K users and $480K ARR in 14 months
Raised $3.2M seed round led by Y Combinator and a16z scout fund
Acquired by Jasper AI in March 2023 for product and team
N

Senior Product Manager

Notion · San Francisco, CA

Jun 2019 — Dec 2021
Led Notion API launch reaching 500K+ integrations in first year
Designed the templates marketplace growing to 10K+ community templates
Drove 40% improvement in new user activation through experiment-driven iteration

Stack

Technologies & tools I work with

5

Product

Product Strategy80%
User Research80%
A/B Testing80%
Growth80%
Pricing Strategy80%
5

Technical

SQL80%
Python80%
GPT/LLM APIs80%
Analytics (Amplitude)80%
Figma80%
4

Leadership

Team Building80%
Fundraising80%
Board Management80%
Cross-functional Leadership80%

Projects

Things I've built

WriteMind
Featured Project

WriteMind

AI writing assistant that learns your style. Built from 0 to $480K ARR, raised $3.2M seed, acquired by Jasper AI.

Next.jsGPT-4PineconeStripeVercel
The PM Playbook

The PM Playbook

WritingCommunityAI Strategy

Education

B.S. Computer Science & Business

UC Berkeley

19year

2015 — 2019

Double major. President of Blockchain at Berkeley. CalHacks organizer.

Testimonials

What people say

“

Liam has the rare combination of deep technical understanding and exceptional product intuition. He's the best product thinker I've worked with in the AI space.

M

Michael Siebel

Managing Director at Y Combinator

“

Liam's ability to translate complex AI capabilities into features users love is exceptional. The Brand Voice launch was a masterclass in product execution.

A

Austin Distel

VP Product at Jasper AI

Let's Build Something Great

Always open to new opportunities, collaborations, and conversations.

Email

liam.builds@example.com

Location

Austin, TX

Email Me →