Sierra Space
Defending Today. Defining Tomorrow.™
1341 employees · est. 2021 · Louisville, United States
Leanspace is the older company (2020 vs 2021); Sierra Space is the larger of the two.
Side-by-Side Comparison
| Metric | Leanspace | Sierra Space |
|---|---|---|
| Founded | ||
| Founded | 2020 older | 2021 |
| Headquarters | ||
| Headquarters | Schiltigheim, France | Louisville, United States |
| Employees | ||
| Employees | 40 | 1341 larger |
| Industry | ||
| Industry | Computing, Information Technology, Space | Industrial, Manufacturing, Space |
| Funding Stage | ||
| Funding Stage | Seed | Series C |
| Total Funding | ||
| Total Funding | $8.00M | $2.26B |
| Funding Rounds | ||
| Funding Rounds | 4 | 5 |
| Services | ||
| Services | Satellite Operations, Mission Planning, Cloud Deployment Solutions | Designing and manufacturing satellite systems, Developing spaceplanes like Dream Chaser, Providing space infrastructure solutions, Creating environmental systems for space, Developing hypersonics & engines, On-orbit biomanufacturing |
| Target Customers | ||
| Target Customers | Leading space companies, Spaceflight organizations, Ground Segment and Mission Operations teams, Space development and technology companies, Space event attendees | Government and defense agencies, Space exploration companies, Biotechnology and manufacturing sectors, Aerospace and defense contractors |
| Taxonomy | ||
| Taxonomy | Space Software Infrastructure, API-driven Solutions, Digital Transformation, Innovation Platform, Competitiveness Boost, Ground Software Management, Asset Integration, Collaborative Systems | Defense Technology, Satellite Platforms, Reusable Spaceplanes, Hypersonic Technologies, Propulsion Systems, Space Infrastructure, National Security, Space Exploration, Orbital Services, Expandable Space Stations, Space Transportation, Solar Power Systems, Life Support Systems, Space Mechanics And Motion Control, Space Economy Solutions |
| Website | ||
| Website | leanspace.io | sierraspace.com |
About Leanspace
Leanspace is a 2020-founded company headquartered in France, with the slogan "🚀 Digitalize Your Mission." The startup operates in the industries of computing, information technology, space, and telecom. Recently, on 22 June 2022, Leanspace secured a significant €6.00M in Seed Round investment from...
About Sierra Space
Sierra Space, headquartered in Colorado, is a mission-proven defense tech company established in 2021. With a slogan of "Defending Today. Defining Tomorrow.™", the company has cultivated a strong foothold in the Industrial, Manufacturing, Space, and Transportation sectors. Sierra Space delivers sat...
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Funding, hiring, leadership and stack changes at Leanspace and Sierra Space — by email.
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Compiled from the BounceWatch company index. We last looked at Leanspace on 25 Mar 2025, and Sierra Space on 3 Aug 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.