System architect (f/m)

À propos de Exotrail A propos d'Exotrail Née d’une forte ambition de conquérir les étoiles, Exotrail est une « scale-up » fondée en 2017. Sa mission : développer et commercialiser des moteurs pour petits satellites à l’échelle mondiale. Nous concevons des produits axés sur l’impact, la livraison rapide et l’amélioration continue. Inspirés par le monde du digital, nous sommes résolument tournés vers le client et portés par un esprit entrepreneurial. Nous gérons les risques pour dépasser les frontières et obtenir des résultats qui ne seraient pas possibles dans un modèle spatial traditionnel. Nous mobilisons tous les moyens nécessaires pour soutenir le développement de nos produits, qu’il s’agisse de propulsion ou de services en orbite. Forts d’un esprit d’innovation hérité de nos débuts, nous nous préparons à faire grandir une entreprise industrielle ambitieuse. Le poste We are looking for a System Architect at our Massy site, to support the rapid growth. Attached to the Test Engineering Team, the System Architect is a key technical leadership role responsible for defining the end-to-end architecture and ensuring the seamless integration of propulsion systems. You will act as the technical bridge between external subsystem suppliers and the final product, ensuring that all components (e.g. plasma, thermal, mechanical, electronics, fluidics) are harmonized to meet mission-critical satellite objectives. Drawing on your experience in integrator environments, you will lead the system lifecycle from initial concept through to final qualification and launch. You are the guardian of the system’s technical integrity, balancing performance, safety, reliability and cost within a high-stakes space environment. You will be working closely with design, engineering, manufacturing and subcontracting teams to ensure deadlines and technical specifications are met. Your responsabilities : Define and manage the functional, logical and physical architecture of propulsion systems as well as guarantee the compliance of the global system. You will also plan and carry out functional tests to validate propulsion system operation in near-space conditions. Elicit, flow down and track system-level requirements and ensure traceability from mission goals to subsystem specifications. Perform high-level design analysis including FMECA, Worst-Case Analysis (WCA) to ensure mission success. Lead the technical relationship with external vendors. Specify, review and validate technical deliverables from subsystem suppliers to ensure compatibility with the propulsion system and satellite bus. Define and manage Interface Control Documents (ICD) across mechanical, electrical, thermal and data interfaces. Oversee the Integration, Verification, Validation and Qualification (IVVQ) plan. Ensure the propulsion system meets space standards through rigorous testing and analysis. Participate in drafting integration procedures and reporting on project progress. Provide expert technical support during Assembly, Integration, and Testing (AIT) phases, including the management of Non-Conformance Reports (NCR) and participation in Review Boards (KO, PDR, CDR, QRR, QRB). Profil recherché Technical 7-10 years experiences minimum in space system engineering, with a significant background in subsystem integrators or Large System Integrators (LSI) or Tier-1 space suppliers. Master’s degree or PhD in Aerospace Engineering, Electrical Engineering, or a related field. Professional fluency in English is mandatory Deep understanding of the satellite propulsion market and the specific constraints of the space environment (vacuum, thermal, radiation). Understand of communication standards (CAN, RS). Strong grasp of electric and/or chemical propulsion principles and their interaction with the satellite’s AOCS (Attitude and Orbit Control System). Proven experience navigating the full space project lifecycle. Successfully passing international agency reviews (ESA/CNES/NASA) is a plus. Good understanding of ECSS and NASA standards, familiarity with MIL-STD for high-reliability components. Proficiency requirements management. Experience with MATLAB/Simulink or Python for system modelling is a nice to have. Soft Skills Ability to drive cross-functional teams and influence external partners. Autonomous, proactive and capable of making critical technical decisions in a fast-paced, high-pressure environment.