Kevin Ariza

Senior frontend engineer with 7+ years shipping React and TypeScript products for the web and for iOS and Android. React and Next.js on the web, React Native and Expo on mobile, including App Store and Play releases.

Projects

Screenshot of OpenDBD website

OpenDBD

In-browser database schema designer. Interactive canvas for tables and relationships, with export to SQL, Mermaid, JSON, and PNG.

ReactTypeScriptViteTailwind CSS
Screenshot of SpellReach website

SpellReach

Chrome extension that helps Reddit users find the right communities and improve their posts.

Next.jsReactTypeScript
Screenshot of Ocluv website

Ocluv

Native iOS app that generates non-looping audio for focus and sleep. Shipped to the App Store.

iOSSwiftUIAVFoundation
Screenshot of Pyneer website

Pyneer

Interactive prep app that runs real code in the browser, with instant feedback.

ReactTypeScriptViteMonaco Editor
Screenshot of Flor website

Flor

AI-powered learning companion designed to enhance children's educational experiences through personalized and interactive content.

Next.jsReact.jsTypeScriptAI/MLOpenAI API
Screenshot of SynterAI website

SynterAI

AI-powered YouTube comment analysis tool that turns audience discussions into actionable insights for creators and marketers.

Next.jsReact.jsTypeScriptStripeOpenAI APIYoutube API

Experience

Senior React Native Engineer

Islands | December 2023 - January 2025

  • Implemented about 80 percent of the architecture and built most of the screens and flows for Leo Wallet (leo.app), a privacy-focused Aleo wallet in React Native and Expo. Shipped to the App Store and Google Play.
  • Owned authentication, encryption, and on-device storage, and integrated REST APIs with Zustand and domain-driven design.
  • Applied a container-presentational pattern so screens stayed testable, with a shared component library in Storybook.
  • Built an in-app browser with tabs and navigation that could exchange data with the web version of the wallet.
Senior Full Stack Engineer

Buildertrend | April 2022 - December 2023

  • Built Buildertrend Wallet, a financial app for construction customers, in React and TypeScript. Designed the notification service and the onboarding tracker that lifted engagement.
  • Also worked on the Python and FastAPI side of that product, including a networking library that cut space complexity by ten times.
Senior Frontend Engineer

Blankfactor | March 2021 - November 2021

  • Built the base architecture for React Native apps using domain-driven design and the Flux pattern.
  • Shipped web and mobile work in React, React Native, and TypeScript across Madwire Marketing 360, Math Nation, and Brawl Street.
  • Migrated older web interfaces to React with reusable components and better performance.
React Native Mobile Developer

PAGOLINEA | March 2020 - November 2021

  • Built a wallet and trading app for iOS and Android from scratch as the sole React Native developer.
  • Owned feature delivery through release on both stores, and shipped the first version ahead of schedule.
Independent Product Engineer

Chelone Labs | September 2024 - Present

  • Ship independent products in React, TypeScript, Next.js, and Swift, including OpenDBD, SpellReach, and Ocluv. Ocluv is on the App Store.
Senior Backend Engineer

Cloud Transit Xchange (CTX) | March 2025 - March 2026

  • Built and maintained production APIs in Node, Express, and TypeScript inside an existing backend. Tuned PostgreSQL for high-volume time-series data, alongside InfluxDB.

Tech Stack

Frontend

ReactTypeScriptNext.jsTailwind CSS

Mobile

React NativeExpoSwiftUI

Testing

JestReact Testing LibraryCypressStorybook

APIs and data

Node.jsExpressPostgreSQLREST

Recommendations

Esteban Contreras

Senior Fullstack Engineer at Buildertrend

“Kevin impressed me with his technical skills, dedication, and ability to deliver high-quality work.”

Tyler Sanderson

Senior Frontend Engineer at Buildertrend

“Kevin consistently showcased remarkable technical expertise and problem-solving capabilities.”

Fernando Flores

Senior Python Engineer at Buildertrend

“Kevin is a highly skilled Full Stack Developer with deep expertise in broad range of technologies.”

Jorge Santamaria

Frontend Developer at Blankfactor

“Kevin is always available to help me when needed, he strives for excellence and a valuable leader.”

Nela Vivas

UI/UX Designer at Ecoluciones

“Kevin was a fantastic person to work with, and is multi-skilled innovative perfectionist.”