Rockelox
Propulsion Engineer // Turbomachinery Lead
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The Role
This is one of Rockelox's first engineering roles. The team will be deliberately small, which means you won't be handed one tiny subsystem and asked to work on it in isolation.
You'll work directly with the founder and have serious technical responsibility from day one.
Your primary ownership will cover:
- Pumps: centrifugal turbopumps and pump housings
- Turbines: high-speed axial gas turbines
- Rotordynamics: shafts, bearings, seals, and rotor dynamics
- Flow paths: volutes, manifolds, tubing, and associated hardware
- Test infrastructure: turbomachinery test hardware, tooling, and fixtures
But turbomachinery is your area of depth, not the boundary of your responsibility.
You'll work across the engine alongside the rest of the team, including everything from chamber & nozzle design to injectors, regenerative cooling, systems integration, and other core propulsion problems.
We need someone who can think about the whole engine, not just their own CAD model.
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What we're looking for
Show us what you've built.
The strongest signal isn't necessarily a prestigious university or company on your CV. It's evidence that you've taken difficult engineering problems from concept to hardware, dealt with things going wrong, and iterated until they worked.
That could be:
- A rocket engine
- A turbine or turbomachinery project
- An aircraft
- A race car
- A robotics system
- A machine you've designed and built yourself
- Something completely different
We're interested in what you built, what you personally contributed, what failed, and what you learned from it.
Academic achievement and relevant industry experience are both valuable. But hands-on engineering, ownership, and demonstrated ability matter more than pedigree alone.
If you've got something you're proud of, show us.
Where this goes
This is a founding engineering role for someone who wants to grow with Rockelox over the long term.
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The immediate mission is simple: design, build, and test critical turbomachinery hardware.
As Rockelox grows, you'll have the opportunity to build and eventually lead the team responsible for turbomachinery development.
Starting:
Q1 2027
Location:
UK (exact location TBC; relocation required. Occasional travel to events, test facilities, and partner locations)
Compensation:
Competitive salary + meaningful equity
If you've spent your free time building unreasonable things, we'd like to hear from you.
How to apply
Skip the cover letter.
Give us exactly 3 bullet points:
- The hardest technical problem you've personally solved.
- What you specifically did and how you approached it.
- The measurable result or impact.
We'd rather see evidence of what you can do than read another two-page cover letter.
More opportunities at Rockelox
We're hiring for multiple early engineering roles. Explore all opportunities at rockelox.com
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