01
Real ownership
Founding-team scope with direct responsibility for analyses, designs and test preparation.
Careers
Build engines that change what can fly.
Join a founding-stage propulsion company where the distance between your work and the test article is measured in days, not departments.
Why join now
Early enough to shape the engineering culture.
The work is technically demanding, cross-disciplinary and close to the hardware. That is exactly the point.
02
Frontier engineering
Work on compressible flow, detonation, heat transfer and aerospace hardware integration.
03
Small team
Fast technical discussion, low hierarchy and direct access to the complete system.
04
Cross-disciplinary
Learn beyond a single analysis tool or component boundary.
05
Mission focus
Every project contributes to a propulsion demonstrator and a clear test milestone.
Open tracks
Six-month contract internships.
We are considering interns for three focused tracks supporting early rotating detonation research and demonstrator development.
01 / Propulsion
Propulsion intern
Support early detonation propulsion research, chamber and injector concepts, basic propulsion calculations, CFD setup and post-processing, test planning and technical documentation.
Good fit: Aerospace, mechanical, chemical or related engineering students and recent graduates interested in compressible flow, thermodynamics, combustion or CFD.
02 / Design
Design intern
Support mechanical design of propulsion hardware, fixtures, mounts, injector layouts, chamber components and prototype assemblies, including drawings, BOMs and design-for-manufacture work.
Good fit: Candidates with CAD experience in SolidWorks, CATIA, Fusion 360, Siemens NX or similar tools. Student engineering teams are a plus.
03 / Thermal
Thermal intern
Support heat-transfer calculations, thermal-load estimation, cooling concepts, high-temperature material research, simulation and design-trade documentation.
Good fit: Candidates interested in heat transfer, high-temperature materials, combustion chambers, cooling methods or CFD/FEA thermal analysis.
How to apply: Email your CV, portfolio or project links, and preferred role to connect@sleipnirx.com with the subject Internship Application — [Role Name].
Career questions
Ask the team.
Use this form for career or company questions only. Internship applications should be sent by email using the instructions above.
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