jasongrant.me

I’m a design leader who ships production code. I lead design at Hi Marley and founded Hypoth, an AI products studio.

I lead product design at Hi Marley, where I’m consolidating the front-end onto one design system, designing AI-native experiences end-to-end, and shipping production code alongside engineering. Before Hi Marley I led design teams at Klaviyo and Vertex, and built design orgs from zero at both. I founded Hypoth, a small studio for AI products, where we write the question first and ship narrow.

~/nowupdated may 2026
Hi MarleyDirector of Product Design2025 — presentInsurtech · Series B

Lead design across every product surface, reporting to the CPO. Established a three-tier design fidelity model — production code, Figma overlays, and an interactive Vercel prototype site — chosen by intent rather than default. Consolidated four legacy component libraries into one production design system.

HypothFounder2025 — present

A studio for AI products. We start each one with a question we can't stop thinking about, then build an experiment to test it.

Current experiments
WrenH-02 · in beta

Articles you save become a short, private podcast you can listen to anywhere.

OllloH-01

A career growth tracker for the people doing the work.

KlaviyoSenior Manager → Director of Product Design2021 — 2025Martech · Series D to IPO

Held sole design quality authority across an 80-person design org after the VP of Design left, and was a primary design sign-off on PRDs. Built three design teams from zero (Design Systems, Content Design, Internationalization) as the design org grew from 12 to 80, including the Ascent Design System. Ran growth experiments, including a free-to-paid conversion test that lifted 28-day conversion +0.7% absolute and went GA.

VertexHead of Design2017 — 2021Pharma · Public

Built and led the Experience Design team from zero. Created the design system. Interfaced with C-level on platform consolidation across biology, chemistry, clinical, and exec knowledge management.

  1. Your Org Chart Decides Your Speed
  2. Execution Collapsed. Direction Didn't.
  3. Post-Figma Design: Real UI, Real Data
  4. Design Isn't Dead. It Just Needs to Split.
  5. Why Every Company Needs a UX Engineer
All writing on Substack