Alex Rivera
Building interfaces that feel inevitable.
About
A bit about how I work
I'm a frontend engineer who cares more about the last 10% of a feature than the first 90% — the focus states, the loading skeletons, the animation that resolves half a beat sooner than you'd expect.
Most of my work sits at the intersection of design systems and performance: making interfaces that feel considered without making them heavy. I like problems where the constraint is the interesting part.
- Location
- Portland, OR (remote-friendly)
- Focus
- Design systems & performance
- Availability
- Open to select contract work
Skills
What I reach for
Languages
- TypeScriptExpert
- JavaScriptExpert
- PythonProficient
- SQLProficient
- GoFamiliar
Frontend
- ReactExpert
- Next.jsExpert
- Tailwind CSSAdvanced
- Radix UIAdvanced
- MotionProficient
Backend
- Node.jsAdvanced
- GraphQLProficient
- PostgreSQLProficient
- REST APIsAdvanced
Tooling
- ViteAdvanced
- WebpackProficient
- PlaywrightAdvanced
- StorybookAdvanced
- GitExpert
Design
- FigmaProficient
- Design SystemsAdvanced
- Accessibility (WCAG)Advanced
Projects
Selected work
Experience
Where I've worked
Leading frontend architecture for Lumen's core analytics product and driving its migration to React Server Components.
- Cut the largest route’s JS bundle by 38% through route-level code-splitting and RSC adoption
- Established the team’s component review process, reducing UI regressions by half
- Mentored two mid-level engineers through their first senior-track projects
ReactTypeScriptNext.jsGraphQLBuilt and maintained the Northwind design system and its consuming product surfaces across six teams.
- Designed and shipped the Northwind token pipeline from Figma to code
- Reduced average new-feature UI build time by roughly 50%
- Ran a monthly accessibility audit that brought every product surface to WCAG AA
ReactStorybookStyle DictionaryOwned the checkout and product-listing experience for a mid-size e-commerce platform.
- Redesigned the checkout flow, lifting conversion by 12%
- Introduced automated visual regression testing to the frontend pipeline
Next.jsJavaScriptTailwind CSSJunior Web Developer
Fieldnote Labs
–
First engineering role, building internal tools and a public-facing survey app for field researchers.
- Shipped an offline-first PWA used by 30+ field researchers
- Learned production React and TypeScript from the ground up
ReactJavaScriptIndexedDB
Certifications
Credentials I've earned
Meta Front-End Developer Professional Certificate
Meta (via Coursera)
Verify credential (opens in a new tab)Open Source
What I've shared
Contact
Let's talk
Have a project in mind, or just want to say hi? My inbox is open.