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. Designed the AI Writing Assistant end-to-end, including prompt engineering, for 26,000+ users across enterprise insurance carriers.

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.

KlaviyoDirector of Product Design · fractional interim VP2023 — 2025Martech · Series D to IPO

As fractional interim VP, held the design quality bar across an 80-person product org and represented design at PRD approval. Ran growth experiments, including a free-to-paid conversion test that lifted 28-day conversion +0.7% absolute and went GA. Built three teams from zero (Design Systems, Content Design, Internationalization), including the Ascent Design System.

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