About Exotrail π
Born from a strong ambition to reach for the stars, Exotrail is a fast-growing scale-up founded in 2017. Its mission: to develop and commercialize propulsion systems for small satellites on a global scale.
We design products focused on impact, fast delivery, and continuous improvement. Inspired by the digital world, we are firmly customer-oriented and driven by an entrepreneurial spirit.
We manage risks to push boundaries and achieve results that would not be possible within a traditional space model.
We deploy every necessary resource to support the development of our products, whether in propulsion or in-orbit services. Strengthened by an innovative mindset inherited from our early days, we are preparing to grow into an ambitious industrial company.
π¨βπ»
We are looking for a Propulsion R&D Engineer at our Massy site to support the rapid growth.
Attached to the Plasma & Materials Team, you will be responsible for:
π Conducting advanced research
π Developing cutting-edge propulsion technologies
π Collaborating with cross-functional teams
Main responsibilities:
π Design, develop, and analyze advanced propulsion technologies, including prototype construction and validation testing under diverse operating conditions.
π Plan and execute laboratory tests, analyze performance data, identify discrepancies, and implement corrective measures to optimize propulsion systems.
π Research and evaluate innovative materials, manufacturing methods, and emerging technologies to enhance propulsion performance and reliability.
π Prepare technical reports, research papers, presentations, and maintain comprehensive documentation of research activities, experiments, and project progress.
π Drive innovation initiatives within the propulsion domain, contribute to new research concepts, and support patent applications and intellectual property strategies.
Preferred Experience πββοΈ
Education: PhD in electric propulsion, chemical propulsion, plasma physics, material science, or a related field
π Experience 3β5 years of relevant research experience gained through a PhD, postdoctoral work, or industry projects
π Hands-on experience with electric propulsion systems and laboratory environments, including vacuum chambers, oscilloscopes, diagnostics equipment, power supplies, and experimental setup integration.
π Proficiency in data acquisition, test applications, and data processing tools such as Python, ideally MATLAB, and/or LabVIEW.
π Strong analytical mindset with the ability to independently investigate, understand, and optimise experimental behaviour and propulsion system performance.
π Excellent written and verbal communication skills in both French and English, including strong technical writing abilities and a passion for developing agile, high-technology space solutions.
About our recruitment processπ€
We are committed to recruiting the right people for the right job regardless of your private background.
We meet at least three times in order to give you a better idea of what it's like to work at Exotrail:
1. Technical interview with our Talent Acquisition Manager: you will learn more about the position and our culture
2. On-site interview with your future manager: you will discover your work environment and learn more about the required qualifications
3. Interview with the team and a founder: you can make sure that you share the same vision and values of the company

We are an end-to-end space mobility operator.
Exotrail is a #space company which designs, develops, and operate #mobility solutions for an agile space. Our mission is to deliver mobility solutions for an efficient & sustainable space.
Thanks to this, a new world of telecommunication, Earth observation and space exploration will arise. Our mobility solutions range from highly flexible high-thrust propulsion systems for small satellites (spacewareβ’), mission simulation and operation software (spacestudioβ’ & spacetowerβ’), and orbital transfer vehicles (spacevanβ’).
Exotrail has been incorporated in 2017 and has secured since then over 75M⬠from prestigious Venture Capital funds and public grants. Our team consists of +150 people who are passionate about disrupting the space industry. We operate out of two locations: Toulouse and Massy (suburb of Paris) in France.