Sofia Delgado
Frontend Developer Β· React & Web Performance
Miami, United States
About
Frontend Developer with 5 years of experience building fast, accessible interfaces in React and TypeScript for consumer products. Rebuilt a checkout flow that cut load time 45% and raised Core Web Vitals from 62 to 96, and treats accessibility (a11y) as part of done. Owns components from Figma handoff to production, with Jest and Cypress tests on every release.
Experience
- Palmview DigitalΒ· Senior Frontend DeveloperMiami, FL (hybrid)2023-05 β Present
- Rebuilt the checkout flow in React and TypeScript, cutting load time 45% and raising Core Web Vitals from 62 to 96.
- Migrated 40 legacy jQuery pages to Next.js over two quarters with no downtime and a 30% drop in front-end bug reports.
- Built the design system in Tailwind CSS with 60 documented components, shrinking the CSS bundle 38%.
- Own the front-end test suite in Jest and Cypress in CI, catching regressions before release and halving production UI bugs.
- Led the accessibility (a11y) audit and fixes that brought the product to WCAG 2.1 AA, opening two enterprise deals that required it.
- Coral Bay StudioΒ· Frontend DeveloperMiami, FL2020-08 β 2023-04
- Built responsive marketing sites and web apps in Vue.js and React for 12 agency clients, all shipped on time.
- Moved the build tooling from Webpack to Vite, cutting local rebuilds from 20 seconds to under 1.
- Introduced Cypress end-to-end tests on the three highest-traffic flows, cutting regression bugs 30%.
- Worked directly from Figma handoff with designers and set up a shared component library reused across client projects.
- Sunfield AppsΒ· Frontend Developer InternMiami, FL2019-06 β 2019-09
- Built UI components in React and CSS Modules for an internal admin tool used by 25 staff.
- Participated in two-week Agile sprints and code review with senior engineers.
Education
- University of MiamiΒ· B.S. Computer ScienceComputer Science2015-08 β 2019-05
Projects
- a11y-lint-kitΒ· Creator and maintainerhttps://github.com/sofia-delgado-dev/a11y-lint-kit
Open-source ESLint plugin that flags common accessibility (a11y) mistakes in JSX before code review, adopted by four teams and 300+ GitHub stars.
Certifications
- Meta Front-End Developer Professional Certificate Β· Meta (2022)
- Google Mobile Web Specialist Β· Google (2021)