Senior Propulsion Engineer

ALTEN

4d•Onsite

About The Position

Join our team in London as a Senior Propulsion Engineer. You will lead the development, analysis, and optimisation of advanced propulsion systems for next‑generation space missions. This role demands deep technical expertise, strong systems thinking, and the ability to drive complex engineering programmes from concept through qualification.

Requirements

Proven background in spacecraft propulsion or closely related space systems
Strong capability in thermodynamics, fluid dynamics, and system modelling.
Hands‑on experience from concept design through qualification and flight.
A Bachelor’s or Master’s degree in Engineering, or equivalent military experience.

Nice To Haves

Experience with electric propulsion, cold‑gas systems, or green propellants.
Ability to work across GNC, structures, avionics, and mission operations.
Expertise with CFD, thermal‑fluid simulation, or multi‑physics modelling.
Comfortable with vacuum chamber testing, leak checks, and performance characterisation.
Experience in fast‑paced development cycles, rapid prototyping, or on‑orbit servicing missions.
Ability to clearly present propulsion concepts to internal and external stakeholders.

Responsibilities

Propulsion system design — Own the architecture, modelling, and performance analysis of chemical and electric propulsion systems.
Technical leadership — Guide multidisciplinary teams, review critical designs, and ensure technical coherence across propulsion activities.
Test and validation — Define test plans, support integration, and lead performance verification campaigns.
Supplier management — Oversee external partners delivering propulsion hardware and ensure compliance with requirements.
Mission support — Provide propulsion expertise for mission analysis, system trades, and operational readiness.