Kamusta! ↗

Charles David Olivar

Software Engineer

Charlottesville, VA

Baby David crawling on a yellow mat, with a film date stamp from 1997
Two coworkers on a gray couch in an office lounge, one leaning back and flashing a peace sign, the other taking the selfie
fig. 01Chilling with a coworker at one of the office couches

Squarespace, Scheduling

  • +9.7%more trials became subscriptions after I rebuilt the Scheduling navigation. Modeled at $934K a year.
  • +20%more visitors subscribed from the new Scheduling homepage, which gets 35K visits a day.
  • 87%of a 21.4 second signup was one auth step. I wrote the proposal, another team built it, and 3 products use it now.
A selfie of David and a coworker in front of a window with a hazy view of the Manhattan skyline
fig. 02Nice views from the Empire State Building office

Priceline, Email

  • +123%more bookings from the VIP Monthly Recap email redesign. Net value per send was up 106%.
  • 97Kemail receipts a day, sent by a service I built. Each one had to go out within 30 seconds.
  • +7.7%more bookings per million sends from cross-sell deal cards.
Eight interns sitting in a row on the floor in front of a painted Indeed San Francisco mural, smiling at the camera
fig. 03Last day with fellow interns

Indeed, Job search

  • +11.5%more mobile apply starts from the recent-search tabs I built.
  • +7%more apply starts, and 4.6% more expected hires, from the homepage job feed. I led it from design doc to launch.
  • 32accessibility bugs fixed to meet WCAG 2.1 AA. Tested with Axe, VoiceOver and TalkBack.

Skills

  • TypeScript
  • JavaScript
  • React
  • Node.js
  • Express
  • Redux
  • HTML
  • CSS
  • Tailwind
  • Styled Components
  • Sass
  • Jest
  • Testing Library
  • Cypress
  • Puppeteer
  • WCAG 2.1 AA
  • i18n
  • A/B testing
  • Statsig
  • LaunchDarkly
  • PagerDuty
  • Git
  • Claude Code

Education

UC Berkeley

B.A. Computer Science

Certificate in Design Innovation

Full-time

  1. Senior Software EngineerSquarespace
  2. Software EngineerSquarespace
  3. Software EngineerPriceline
  4. UX DeveloperIndeed
  5. Associate UX DeveloperIndeed

Internships and teaching

  1. UX Design InternIndeed, San Francisco
  2. CS160 ReaderUC Berkeley, UI Development
  3. Software Engineering InternWalmart Global Tech
  4. CS61B Academic InternUC Berkeley, Data Structures

Talk to me about

  • Photography
  • Switchfoot
  • The Braves
  • C.S. Lewis
  • DC Comics

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Hello

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