Charlie Hart

ProductdesignleaderbasedinLosAngeles.

Two decades building products and design teams where high craft meets strong product strategy. Currently focused on AI, the future of money, and expanding economic opportunity for all.

BlockSquareBitkeyMetaHeadspaceAppleHuluPetSmartToyotaNBAAmerican Idol
Charlie Hart

Buildingproductsandteamsthathelppeoplethrive.

My design experience spans big tech, startups, and agencies across industries including streaming, e-commerce, health, mindfulness, small business tools, AI, and bitcoin. I've worked across the full product lifecycle, from 0→1 ideas to foundational platforms used by millions.

A consistent focus has been helping people navigate complex systems, whether that's helping small businesses understand their data, exploring how technologies like AI and bitcoin can give people more control over their financial lives, or designing products that connect people with critical services and support.

The through line: pairing high-craft design with strong product strategy to make powerful systems clearer, more accessible, and more useful to the people meant to serve.

My work spans both hands-on design and leading multidisciplinary teams of product designers, content designers, and researchers. I care deeply about craft, about thoughtfully adopting new tools like AI, and about creating supportive environments where designers can grow and do the best work of their careers.

I'm based in Los Angeles with my husband, daughter, and our dog Alfie.

17

Years experience

6+

Years leading teams

1B+

Users reached

190

Countries shipped to

Zero to One01

Building from scratch

Block

2025

Square AI

Square AI levels the playing field for local businesses by turning their own data into insights and action. Led a team of five designers to launch Square's first AI agent across web and mobile in 2025. Defined the product's visual identity, established generative data visualization principles for LLM outputs, and pioneered new prototyping workflows with AI tools in close partnership with engineering.

0→1Generative UIWeb & Mobile
Block

2024–2025

BitKey Self-Custody Wallet

Launched Bitkey — Block's first self-custody bitcoin wallet, built to make holding your own keys simple, safe, and recoverable. On a small, scrappy team I wore two hats: managing a team of product and content designers while also contributing directly as a principal designer on core features. Shipped the core product, rapidly scaled the feature set, and invented new ways of safely sending bitcoin (granted patent).

Bitcoin0→1Hardware & MobileInternational

Foundational Systems02

Owning and improving the surfaces that tie it all together.

Block

2020–2024

Onboarding at Square

A completely design-led project (no PM) that overhauled the first experience every new Square seller goes through. We consolidated over 140 independent onboarding flows into one cohesive journey — fixing leaky funnel steps and improving growth metrics considerably along the way. Required deep collaboration with every product team to ensure their products were accurately represented. The goals were clear: help sellers discover Square's ecosystem without overwhelming them, let them skip and return to steps at their own pace, set honest expectations about cost, and give every seller a personalized recommendation based on what we know about their business.

Growth & Activation35+ Product TeamsUI SystemsWeb & Mobile
Dashboard at Square
Block

2021–2024

Dashboard at Square

Led the team that redesigned the Square web dashboard and built a native mobile app from scratch — in parallel. The work centered on defining the identity for Home: surfacing the right information for the right seller at the right time, including early integration of AI. One of the most contested surfaces at Square, with every product team vying for placement. We built prioritization frameworks to keep it focused and user-first — not a mirror of our org chart. We also streamlined navigation to match how sellers actually think, replacing a structure that had been quietly shipping our internal org structure instead.

Web & MobileUI Systems35+ Product Teams

Products at Scale03

Building products loved by millions.

Social Good and Health Products at Meta
Meta

2018–2020

Social Good and Health Products at Meta

Designed Facebook Blood Donations — a product to connect willing donors with local opportunities to give. In many countries, too few donors exist to meet demand; people simply don't know when or where to donate. The feature has helped over 50 million donors sign up worldwide, saving lives and working toward ending the global blood shortage.

50M+ UsersWeb & MobileInternationalEmerging Markets
Headspace App and Web
Headspace

2016–2018

Headspace App and Web

Headspace is a meditation app committed to advancing mindfulness through clinically-validated research. As a senior UX designer, worked to make complex mindfulness concepts approachable — helping users gradually build and maintain a daily practice. The product now serves over 60 million members across 190 countries. Also led special projects focused on reducing churn, driving subscriber growth, and community features for sharing content with friends.

Web & MobileStartup60M+ MembersInternational
Hulu
Huge×Huge

2016

Hulu

As part of a large design team, redesigned Hulu's streaming app and web experience end to end — including the marketing site, onboarding and acquisition flows, and cross-platform viewing experience across mobile, tablet, and TV.

Cross-PlatformAt ScaleGrowth & Acquisition

E-Commerce04

Driving awareness, conversion, and loyalty for some of the world's most iconic brands.

Apple

2015–2016

Apple

Redesigned search, jobs, and education experiences for Apple.com — balancing editorial elegance with functional clarity at massive scale.

PetSmart

2016

PetSmart

Collaborated closely with PetSmart's executive team to redesign their sales website — modernizing the brand, improving product discovery and point-of-sale flow, and integrating a vast library of pet content including vet articles.

Toyota

2013–2015

Toyota

As a UX designer at Saatchi & Saatchi, worked as part of a team to redesign Toyota.com, the brand's flagship site with over a million daily visitors. Also contributed to the Toyota Owners platform and interactive Super Bowl campaigns and mobile games.

Inventions

Patents

17years.6companies.somanypixels.

2020 – 2026

Block

Design Director

Leading product design, research and content design across Square and Bitkey Teams. Products used and loved by millions of businesses and individuals.

SquareBlockBitkey

2018 – 2020

Meta

Product Designer

Designed social good and health products reaching over 50 million people worldwide.

Meta

2016 – 2018

Headspace

Senior UX Designer

Product design for one of the world's leading mindfulness platforms. 60M+ members.

Headspace

2015 – 2016

Huge

Senior Interaction Designer

UX and interaction design for large-scale digital platforms at global brands.

AppleHuluPetSmart

2013 – 2015

Saatchi & Saatchi

UX Designer

Global campaigns and digital product design for one of the world's iconic auto brands.

Toyota

2008 – 2013

Telescope

Designer

Interactive and broadcast design for live events and TV, such as voting on American Idol and more.

American IdolNBA