# Experience: Sixteen years on the web.

I’ve spent my career on the web at Netflix, PayPal, and consultancies in Tijuana and Los Angeles before that: leading small teams through hard deadlines, and building the shared pieces other engineers depend on.

## Netflix (2021–now)

### Senior Software Engineer, Games Web

2021–now · San Diego, CA

Leading technical initiatives for Netflix's gaming platform and web experiences, driving architecture decisions, and mentoring engineers across multiple high-impact projects.

- Technical lead for the logged-in Netflix.com experience, setting the technical direction for features members use to find what to watch.
- Created the first GraphQL client in the Netflix website monorepo, now adopted by 4+ applications, and served on committees that review GraphQL schemas and API best practices.
- Part of the small tiger team that launched the Tudum global website.
- Helped plan the first cohort of new graduates: technical materials, a specialized bootcamp, and guidelines for selecting mentors.
- Worked on the main Netflix consumer application for smart TVs.

Case study: [Netflix’s first live event, on the web](https://www.carloscastro.dev/experience/netflix-live.md)

## PayPal (2014–2021)

### Staff Software Architect 2

2020–2021 · San Jose, CA

Architected solutions for PayPal.com across backend and frontend, designing integrated solutions using headless CMS and Server Driven UI.

- Architected PayPal.com pages built from a third-party headless CMS and server-driven UI, getting campaigns to market faster and saving millions in development costs.
- Led six frontend engineers in rebooting the UI component library with TypeScript, React, CSS Modules, and GraphQL.
- Architect for the web team across backend and frontend, designing solutions for the PayPal home page, which receives millions of unique visitors per year.

### Staff Software Engineer 2

2019–2020 · San Francisco Bay Area

Led frontend architecture for multiple teams including Billing and Developer Documentation, driving accessibility and performance improvements.

- Engineering lead for PayPal UI, the design system for every customer-facing PayPal app on Web, iOS, and Android, used by roughly 90% of consumer apps; grew the team from a product manager and me to eight engineers.
- Created the design tokens strategy and the NPM, CocoaPods, and Gradle delivery that turned it into packages for each platform.
- Frontend architect for Billing and for Developer Documentation, two teams of ten, leading features, accessibility, and performance.
- Launched a redesigned developer dashboard with a clear split between Sandbox and Production, and presented initiatives to C-suite leaders for funding.

Case study: [Creating a design system for PayPal’s customer-facing applications](https://www.carloscastro.dev/experience/paypal-design-system.md)

### Staff Software Engineer

2016–2019 · San Francisco Bay Area

Created PayPal.com's Design System and successfully introduced React to a team of 50+ engineers.

### User Interface Engineer

2015–2016 · San Francisco Bay Area

Developed and managed corporate sites and marketing campaigns, including creating an in-house blogging tool.

- Sites included About, Jobs, Stories, and Investor Relations; the blogging tool’s frontend was built in React.

### Full Stack Engineer

2014–2015 · San Francisco Bay Area

Worked on Merchant Signup Platform handling thousands of new merchants monthly across the world.

## Sibatel (2014–2016)

### Software Engineer

2014–2016 · Greater Los Angeles Area

Web Development Consulting for various companies.

## Tekmexico (2013–2014)

### Software Engineer

2013–2014 · Tijuana, Mexico

Web Development Consulting.

## INDEBC (2010–2013)

### Software Engineer / Systems Administrator

2010–2013 · Tijuana, Mexico

IT Department member handling systems, development, and support.

## Education

### Computer Engineering

Universidad Autónoma de Baja California · Baja California, Mexico

## Case studies

- [Netflix’s first live event, on the web](https://www.carloscastro.dev/experience/netflix-live.md): Technical lead for the web experience of Chris Rock: Selective Outrage, the first live event Netflix ever streamed.
- [Creating a design system for PayPal’s customer-facing applications](https://www.carloscastro.dev/experience/paypal-design-system.md): Engineering lead for PayPal UI, the design system for every PayPal app customers use (consumer, merchant, and checkout) on Web, iOS, and Android.