We launched Long Journey IV. Click here to read all about it!

Skip to Content
Long Journey Ventures
Portfolio
Our Values
Team
Jobs
Stories
Say hello
Long Journey Ventures
Portfolio
Our Values
Team
Jobs
Stories
Say hello
Portfolio
Our Values
Team
Jobs
Stories
Say hello
hero

Embark on a New Journey

Discover career opportunities within our portfolio of magically weird companies
companies
Jobs
Search 
jobs
Explore 
companies
Join talent network
Talent
My job alerts
Magrathea
Magrathea
magratheametals.com

Locations

San Francisco, CA, USA

Size

11-50 employees

Stage

Seed

founded in

2022

Magrathea is revolutionizing metal production by creating magnesium without mining, significantly reducing carbon emissions and environmental impact. Their innovative technology allows for the production of the lightest structural metal, which is abundant in brine, making it a sustainable alternative to traditional steel and aluminum. With a focus on decarbonization and electrification, Magrathea is positioned to meet the growing demand for eco-friendly materials in the automotive and other industries, having already produced the first ingots of metal from seawater. Their partnerships and advancements indicate strong traction in the market.

Something looks off?
Open jobs at Magrathea

On-site & Remote

Job function
Seniority
Salary
Powered by Getro
Privacy policyCookie policy
 

Bellwethers welcome.

Say hello

© 2025 Long Journey.