Valentino Espinoza

AI product development and frontend infrastructure.

• Rebuilt AI chat frontend and established patterns for form library migration and analytics-driven iteration
• Provided design guidance across features and established a pattern for driving design decisions through user metrics
• Implemented visual regression testing for AI workflows; improved test suite pass rate from 75% to 100%

Design system architecture, accessibility, and frontend platform.

• Led company-wide accessibility program covering remediation, automated testing, engineer training, and VPAT compliance through WCAG 2.2 AA
• Architected design token pipeline improving design-to-code handoff and developer velocity
• Led design system adopted by 100+ engineers, driving best practices across 10+ teams through code review, RFCs, and cross-team collaboration

Full-stack product delivery and early design system contributions.

• Core contributor to the initial design system, establishing the component library foundation adopted company-wide
• Built full-stack features with Rails and React including calendar integrations, SEO, performance optimization with background jobs and observability tooling

Frontend modernization and API architecture.

• Migrated legacy Angular codebase to React and established GraphQL API patterns

Frontend development, accessibility, and backend contributions.

• Built key UI features including personalized navigation and a robust pane system; contributed design system components with test-driven development

React Native feature delivery and Rails backend support.

• Shipped end-to-end features across a React Native app and Rails backend, including payment flows and fundraising functionality

Early-career fullstack across mobile, web, and client projects.

• Built React Native apps demoed at CES and published to the App Store