COMPANY PROFILE

Stellar Alpina

Request full access

Rotating detonation engines for European in-space mobility

Dübendorf, SwitzerlandFounded 2026Space

Valuation $25–50M Last recorded · 2026

Headcount <100 Current team size

Total funding $0–10M Disclosed equity funding

Unlock exact values

About Stellar Alpina

Stellar Alpina is a Zurich SpaceTech company founded in 2026 by ARIS alumni Rick Röthlisberger, Simi Y. Wespi, Victor Elliesen and Patrick Egli that develops compact rotating detonation rocket engines (RDREs) and in-space vehicle architectures for orbital transfers, repositioning and future cislunar mobility. Detonation-based propulsion aims to deliver smaller, lighter engines with higher performance than conventional deflagration thrusters; the team completed Engine 0 hotfire campaigns within 82 days of incorporation, with eight detonative hotfires showing stable multi-wave operation cited as early commercial RDRE milestones in Europe. In May 2026 Stellar Alpina raised €3.8 million (CHF 3.5 million) in a pre-Seed led by Founderful with LP&E and strategic DeepTech investors to advance flight-oriented engines; separate Venture Kick support-programme capital is distinct from the priced equity pre-Seed. Sources: EU-Startups 28 May 2026; Founderful.

MoreLess Source: Dealroom company data

At a glance

Status: Operational
Founded: 2026
Headquarters: Dübendorf, Switzerland
Employees: 13
Open positions: None listed
Dealroom signal: 82.9/100
Industry: Space
Sector: Space, Space Tech, Space Exploration, Propulsion Systems, Space Upstream, Lunar, NIF defense security and resilience, NIF freedom of operations and mobility, DT and LS, science-based
Technology: Hardware, Deep Tech
Business model: Manufacturing
Client focus: B2B
Links: Website LinkedIn

Knowledge graph

Founder mafias, market maps, lists and research connected to this company by Dealroom

Market maps in Space

Market map Upstream Space Tech startups in Europe

Market map Lunar Economy

Market map Space Tech Landscape

Open roles

Track hiring at Stellar AlpinaOpen roles, team growth and hiring by functionBook a demo

Looking for a job? The startup jobs board lists open roles.Startups hiring now →

Funding history

2 recorded events

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
GRANT✓Other financing	Sep 2026	$176K	—	Venture Kick	↗
SEED✓Equity / VC	May 2026	$4.5M	$18M	LP&E · Founderful	↗

Showing the latest 2 of 2 recorded eventsBook a demo for the full funding history →

Growth signals

Stellar Alpina website traffic

Latest recorded traffic for Stellar Alpina is 1.3K monthly website visits, up 3150% over the last three months.

Latest monthly visits1.3K 3-month web change+3150%

Monthly website visitsFeb 2026–Jul 2026

Explore monthly traffic historyTrack growth over time and compare with peersBook a demo

Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Company	Headquarters	Status	Employees	Total funding	Valuation
OMOrbital MatterWe are working on a 3D Printing technology to be used in open space and on celestial bodies to manufacture large elements of space infrastructure	Warsaw, Poland	Operational	9	$2.7M	$4.4M
IMIntuitive MachinesEngineering solutions at the unimagined intersections between energy, medicine, and aerospace	Pasadena, United States	Operational
EVEvolunarLight weight autonomous drone for lunar pits and craters exploration	Turin, Italy	Operational
AIAgile Space IndustriesAn aviation and aerospace that specializes in propulsion, test rockets, and space exploration	Durango, United States	Operational
SSSmallSpark Space SystemsEnabling business to participate in the lunar economy and developing critical infrastructure to enable human and robotic exploration to the Moon and beyond	Cardiff, United Kingdom	Operational
X-X-energyDelivering the next generation of carbon-free energy by reinventing nuclear power	Rockville, United States	Operational
SDStellar DiscoveriesPioneering technologies to enable Crewed Space Exploration and Exploitation	Municipality of Metamorfosi, Greece	Operational
OHOhmSpaceHigh-thrust, high-efficiency electric satellite propulsion systems.	Rome, Italy	Operational