v1.0.0

Software developer, founder, and amateur astronaut.

I'm Sergiu, a software developer and entrepreneur based in Boston, MA. I'm the founder and CEO of Planetaria, where we develop technologies that empower regular people to explore the world on their own terms.

Here's who I am & what I do

Hello, I'm Sergiu, a Full-Stack Web Developer based in Boston. I have passion for creating innovative and engaging web apps.

September 5, 2025

Crafting a design system for a multiplanetary future

Most companies try to stay ahead of the curve when it comes to visual design, but for Planetaria we needed to create a brand that would still inspire us 100 years from now when humanity has spread across our entire solar system.

September 5, 2025

September 2, 2025

Introducing Animaginary: High performance web animations

When you're building a website for a company as ambitious as Planetaria, you need to make an impression. I wanted people to visit our website and see animations that looked more realistic than reality itself.

September 2, 2025

July 14, 2025

Rewriting the cosmOS kernel in Rust

When we released the first version of cosmOS last year, it was written in Go. Go is a wonderful programming language, but it’s been a while since I’ve seen an article on the front page of Hacker News about rewriting some important tool in Go and I see articles on there about rewriting things in Rust every single week.

July 14, 2025

Work

Company
Planetaria
Role
CEO
Date
2019 Present
Company
Airbnb
Role
Product Designer
Date
2014 2019
Company
Facebook
Role
iOS Software Engineer
Date
2011 2014
Company
Starbucks
Role
Shift Supervisor
Date
2008 2011

Download Resume

resume.json