Valentino Espinoza

Contract work on a Next.js and Sanity stack for SEO, content architecture, site quality, and marketing integrations after a short Govly contract.

• Build and maintain Next.js experiences backed by Sanity CMS, with a focus on SEO, content architecture, and site quality
• Lead framework, toolchain, and integration upgrades without disrupting ongoing product work
• Partner with design and engineering on UX decisions, implementation tradeoffs, and operational integrations including SendGrid and HubSpot

AI product development and frontend infrastructure.

• Rebuilt the AI chat frontend and set patterns for a broader form library migration
• Helped shape feature design and used product metrics to guide iteration
• Implemented visual regression coverage for AI workflows and raised suite pass rates from 75% to 100%

Design system architecture, accessibility, frontend platform, and full-stack product delivery.

• Led the company-wide accessibility program, including remediation, automated testing, engineer training, and VPAT support through WCAG 2.2 AA
• Led the design system used by 100+ engineers and helped set frontend standards across 10+ teams through RFCs, reviews, and shared implementation patterns; previously helped build the original component library foundation
• Built the design token pipeline that improved design-to-code handoff and day-to-day developer speed
• Built full-stack product features with Rails and React, including calendar integrations, SEO work, performance improvements, and observability tooling

Frontend modernization and API architecture.

• Helped move a legacy Angular codebase to React and establish GraphQL API patterns

Frontend development, accessibility, and backend contributions.

• Built key UI features including personalized navigation and a flexible pane system, and 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 tools

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

• Built React Native apps that were demoed at CES and released on the App Store