Muon Space

Muon Space is an American aerospace startup founded in 2021 and based in Menlo Park, California. The company specializes in designing, building, deploying, and operating low Earth orbit (LEO) satellite constellations aimed at climate monitoring, Earth intelligence, and national security. Muon Space offers end-to-end space systems, integrating aerospace engineering, software, data science, and modular satellites to deliver mission-critical data. The company has achieved significant milestones, including the launch of its demonstration satellite, MuSat-1, in June 2023. It has raised approximately $35 million in funding and secured $60 million from customers for payload development. Muon Space provides various services, including custom satellite constellations, the Muon Halo™ program for customers without spacecraft expertise, and data-driven Earth intelligence solutions that leverage AI for enhanced forecasting and decision-making. The team comprises veterans from leading aerospace organizations, fostering a culture of innovation and technical excellence.

Aviation & Aerospace Mountain View, United States Founded 2021 ~282 employees Private · Series B

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Employees
282
+9.3% in the 3 months to Sep 2026
Revenue / employee
$222K
Revenue ~$62.5M
Total funding
$147M
Last round Series B, Jun 2025
12-month attrition
15.3%
Tech: 13.1%
H1B filings, FY2025
1
Sponsors visas
Open jobs
32
Last 30 days

Headcount trend

Muon Space went from 104 employees in Oct 2024 to 282 in Sep 2026. Apr to Sep 2026: 79 people joined, 11 left.

Org structure

Headcount by department

Engineering147
Other75
Operations32
HR13
Sales6
Finance2
Product2
Design2

Funding

  • Jun 2025 · Series B · $45M · Congruent Ventures, Activate Capital, Acme Capital
  • Aug 2024 · Series B · $56.7M · Activate Capital, Congruent Ventures, Radical Ventures
  • Jun 2022 · Series A · $25M · Radical Ventures, Costanoa Ventures, Congruent Ventures
  • Oct 2021 · Seed · $10M · South Park Commons, Climactic, Space Capital
  • May 2021 · Seed · $10M · South Park Commons, Climactic, Space Capital

Salaries at Muon Space

All salaries

3 salary profiles in the US

Pay by level, gender and ethnicity

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering2

The department split adds up all the years listed above. FY2025 alone: 1 filings.

Peer reviews

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Muon Space FAQ

How many employees does Muon Space have?

Muon Space has about 282 employees, up 9.3% over the 3 months to Sep 2026.

Does Muon Space sponsor H1B visas?

Yes. Muon Space filed 1 H1B (LCA) application in FY2025, according to the latest U.S. Department of Labor disclosures. It was for a Engineering role.

What is Muon Space's revenue per employee?

Muon Space makes about $222K in revenue per employee, based on $62.5M annual revenue and 282 employees.

How much does Muon Space pay?

6figr has 3 salary profiles for Muon Space in the US, with pay broken down by role, level, gender and ethnicity on the Muon Space salaries page. See Muon Space salaries

How much funding has Muon Space raised?

Muon Space has raised $146.7M in total funding; its latest round was Series B in Jun 2025.

Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.