Darwin Space are currently hiring for a Fluidics Systems Engineer on behalf of a business in Madrid.

Responsibilities

* Continued mechanical and functional development of the ATHENA PMU, including reliability improvements and production-readiness work.

* Developing and qualifying the in-vacuum propellant filling setup, including outgassing protocols, contamination control and fill calibration procedures.

* Characterising PMU performance: flow delivery, pressure stability, gas management and fill accuracy.

* Writing and maintaining test procedures, assembly instructions and qualification documentation.

* Working closely with the thruster and power electronics teams during integrated testing and firing campaigns.

* Contributing to make-vs-buy decisions and supplier interactions for PMU components.

Qualifications & Skills

* Background in vacuum systems engineering, precision fluidics, analytical instrumentation, or a closely related field, demonstrated either through industry experience or research.

* Hands-on experience handling sensitive or reactive liquids (hygroscopic, conductive, or corrosive media) in a laboratory or production context.

* Familiarity with vacuum hardware: pumping systems, pressure measurement at low ranges, outgassing characterisation, leak detection.

* Experience designing or assembling precision sealed systems (seals, fittings, polymer-to-metal interfaces).

* Rigorous experimental habits: clear documentation, awareness of contamination sources, systematic troubleshooting.

* Comfortable working in a small team where the scope of your role will evolve.

* Proficiency in mechanical CAD (Fusion 360, SolidWorks, or equivalent).

* Direct experience with ionic liquids or electrochemical systems.

* Familiarity with space environmental requirements (thermal vacuum, ECSS or NASA outgassing standards).

* Experience with low-pressure pneumatic proof testing and pressure system compliance.

* Background in microfluidics, MEMS, or lab-on-chip systems.

Darwin Recruitment is acting as an Employment Agency in relation to this vacancy.

James Godfrey