Santiago Alonso

Product Designer · New York

Resume

Founding and lead product designer in privacy, health and fintech. QuadPay's sole product designer from early stage to nearly 2 million customers and a ~US$300M acquisition. Founding designer of Fabric's Emergency Room Guide (ERG), which cut ER stays by 19 minutes per visit. At Cape, sole designer on enterprise, government and defense-adjacent products for high-risk users, from early prototypes to shipped products like Obscura.

hi@santiagoalonso.com · LinkedIn · GitHub

Experience

Product Designer, Cape

June 2025 – Present · New York, NY

Cape is a privacy-first mobile carrier recognized as one of TIME's Best Inventions 2025. Sole designer on enterprise, government and defense-adjacent products, on web and mobile.

  • Shape high-trust flows for sensitive users across product strategy, UX/UI, systems and brand.
  • Partner closely with forward-deployed engineering and product teams on complex products.
  • Shipped Obscura, Cape's identifier-rotating cellular service and hardened Android phone for government and other high-risk users.
  • Built Cape's design system in Figma and code: tokens, components, page blocks and templates, with guidance on when to use each pattern.

Staff Product Designer, Fabric Health

May 2024 – June 2025 · New York, NY

Rejoined after Fabric acquired Zipnosis and GYANT. Fabric Health is an AI-powered virtual care platform for 70+ health systems and payers, covering 100M+ lives. Lead designer on a team of 2-3.

  • Led patient-facing design for Zipnosis and on-demand labs: intake, communication during care, and follow-up after the visit.
  • Overhauled the patient side of Virtual Care (formerly Zipnosis), Fabric's white-label telehealth for health systems like Mount Sinai and NewYork-Presbyterian.
  • Designed a modular landing page system each health system could brand and arrange, with condition and protocol pages, clinically accurate imagery, copy reviewed by the medical team, and SEO built in.
  • Designed AI symptom search that takes patients from "I don't feel well" to the right treatment in their own words, with a different response for sensitive or urgent searches.
  • Designed and launched Fabric's first on-demand labs experience, from ordering through sample tracking to results.

Product Designer, Function Health

November 2023 – May 2024 · New York, NY

Function Health is an a16z-backed preventive health company offering 100+ lab tests with personalized results. Lead designer on the mobile apps, on a team of 2-3.

  • Led design of Function's first iOS and Android apps through launch, while Function had 40,000+ active paying members.
  • Designed My Function Story, Function's first product-led growth loop, which turned lab results into shareable cards with referral tracking.
  • Designed the walkthrough, intake and timeline flows around the top three support-ticket themes from user research.

Senior Product Designer, Fabric Health

October 2022 – November 2023 · New York, NY

Fabric works with health systems to improve patient access. Joined as the founding designer on Emergency Room Guide (ERG), when the company had under 20 people.

  • Sole designer on ERG, which reached 5,700 patients at 3 hospitals, one of them a pediatric ER, over six months.
  • ERG cut ER length of stay by 19 minutes per visit (about 1,800 hours in total) and saved nurses 5-10 minutes per intake.
  • Owned product, UX, marketing and brand early on, then scaled the visual language and design system through the rebrand to Fabric Health.

Senior Product Designer, Aplazo

August 2021 – October 2022 · Remote

Aplazo is Mexico's first buy now, pay later (BNPL) service. Sole designer.

  • Led design across the consumer iOS and Android apps, merchant dashboard, marketing site and marketplace.
  • Designed through Aplazo's high-growth period, as it raised a $27M Series A and grew to 500+ partner merchants.

Product Designer & Design Director, WeBuild

October 2017 – October 2020 · New York, NY

WeBuild is a product design studio working with fast-growing product companies. Concurrent with QuadPay.

  • Led and shipped 15+ client projects across industries, hands-on.
  • Grew the design team from 2 to 4 designers, and onboarded and mentored each new hire.

Senior Product Designer, QuadPay

August 2017 – October 2020 · New York, NY

QuadPay was a consumer fintech app for buy now, pay later installment payments, acquired by Zip Co. for ~US$300M in 2020. The company grew from under 10 to 50-100 people during this time.

  • Sole product designer from early stage through the acquisition, as the app grew to nearly 2 million customers.
  • Owned every design surface: the consumer iOS and Android apps, web checkout, marketing website and merchant experience.
  • The app was rated 4.9 on the App Store by 100,000+ users.

Product Designer, TheoremOne

July 2015 – August 2017 · New York, NY

TheoremOne is a technology consultancy serving enterprise clients.

  • Designed and shipped digital products for Apple, AT&T and Infor, including redesigns of legacy enterprise software.
  • Ran user research and usability testing to set design direction.

Education

Associate Degree, Design and Visual Communications, UTU, Montevideo, Uruguay, 2012

Skills

Design:
Product Design, UX/UI, Interaction Design, Design Systems, Prototyping, User Research, Usability Testing, Accessibility
Tools:
Figma, Adobe Creative Suite, Midjourney, Flora, Magnific, Claude Code, Codex
Build:
React, TypeScript, SwiftUI, Xcode, Android Studio, GitHub, Vercel
Languages:
English, Spanish (native)