Marcos Acosta

Thanks for stopping by! I'm Marcos. My main thing is creating things on the internet, but like most people, I have other interests as well. Currently, I'm a backend engineer at Google, where I build new features related to app personalization on the Play Store. Outside of Google, some of my projects include:

• A public tracker for my liquid diet (2025)
• An explorable explanation about formal systems and causality (2025)
• Cursed Solutions, a UX... experience (2025)
• My long-form blog, World's Worst Detective (started 2024)
• CSS Hell, a CSS-based puzzle game (2023)
  • Went front-page on Hacker News in 2025, bringing in 17k views on one day
  • Live-streamed by CSS evangelist Kevin Powell
• RUGB, a color guessing game (2022)

When I'm not coding, you can find me playing with my band and reviewing NYCT subway stations. Some other ways to find me:

• Email (marcos.da.acosta@gmail.com)
• Bluesky (@marcos.ac)
• Wait outside of Canal St. around 9am on a weekday and wait for me to show up