Functional Avionics Architect

At Exotrail, we are developing innovative space logistics solutions to make satellite operations more efficient, sustainable, and accessible. As part of our In-Orbit Services (IoS) division, we are looking for a Functional Avionics Architect to define, maintain, and validate the functional avionics architecture of our satellite platforms. You will play a key role in ensuring the consistency, robustness, and traceability of avionics functions across the spacecraft, from system requirements allocation to integration and validation activities. Your Missions Avionics Functional Architecture Definition
• Translate system and mission requirements into avionics functions allocated to spacecraft equipment.
• Define and maintain the functional architecture baseline, including functional diagrams, allocations, and operational scenarios.
• Lead architecture workshops with System, Software, AOCS, DHS, IVV, and other engineering teams.
• Ensure consistency between system requirements and avionics functional implementation. Functional Consistency & Interface Management
• Ensure functional consistency between avionics equipment such as OBC, PCDU, GNSS receivers, AOCS sensors, and TM/TC systems.
• Define and maintain internal functional ICDs, including data flows, synchronization, timing, and command logic.
• Drive technical trade-offs while balancing performance, maturity, cost, and system constraints.
• Support architectural decisions and interface management throughout the project lifecycle. Integration, Verification & Validation Support
• Contribute to the definition of IVV strategies, including HIL testing, simulations, and integration benches.
• Support the development and validation of FDIR (Fault Detection, Isolation and Recovery) strategies.
• Ensure traceability and verification of avionics requirements throughout testing activities.
• Contribute to compliance with ECSS and applicable space standards. Project Coordination & Work Package Leadership
• Act as Work Package Leader (WPL) for Functional Avionics Architecture activities.
• Define and maintain planning, workload, milestones, delivery strategy, and project objectives.
• Coordinate contributors and ensure the quality, completeness, and traceability of deliverables.
• Represent the work package toward project management and other technical teams.
• Participate in customer and internal reviews such as PDR and CDR.
• Communicate progress, risks, and technical decisions to stakeholders. About You Required Experience
• Several years of experience in avionics, systems engineering, functional architecture, or spacecraft development.
• Strong understanding of complex systems and the interactions between multiple avionics subsystems.
• Experience translating system requirements into functional architectures and technical solutions.
• Familiarity with verification, validation, integration, and testing activities.
• Experience working in aerospace, space, defense, or other high-reliability industries.
• Previous experience in the space sector is a strong plus. Technical Skills
• Functional avionics architecture design and allocation.
• Good understanding of satellite avionics subsystems and their interactions.
• Requirements engineering, traceability, and system verification.
• IVV methodologies, system validation, and functional testing approaches.
• Knowledge of FDIR principles and fault management strategies.
• Understanding of ECSS standards and space engineering processes.
• Ability to structure and manage complex multi-equipment architectures.
• Cross-functional coordination and technical leadership. Soft Skills
• Strong analytical and systems-thinking mindset.
• Excellent technical communication and documentation skills.
• Attention to detail and traceability.
• Ability to explain complex concepts clearly to different stakeholders.
• Leadership, teamwork, and collaboration.
• Ability to work in a fast-paced and multicultural environment.
• Professional proficiency in English. Why Join Exotrail? Joining Exotrail means contributing to ambitious missions that are redefining space logistics and satellite operations. You will work alongside passionate experts in a fast-growing international company at the forefront of the New Space industry, helping develop the next generation of space mobility solutions.

What We Offer
• 🏥 Company health insurance with 70% covered by Exotrail
• 🚆 50% reimbursement of public transportation costs
• 🏡 Up to 2 days of remote work per week, depending on the position
• 👶 Enhanced maternity and paternity leave coverage with no seniority requirement
• 📚 Learning and development opportunities
• 🧘 Well-being benefits including Moka Care, dedicated conferences, and our ExoCare Program for Moments That Matter
• ⏳ 35 days of paid leave per year (Annual Leave & RTT) Working Environment
• 📍 Offices located in the heart of Toulouse
• 🏭 Modern industrial facilities in Massy
• ☕ Free coffee, tea, and fresh fruit available on site
• 🌍 International and multicultural teams
• 🚀 Dynamic and rapidly growing space company Quality of Life at Work
• 🎉 Team events and afterworks
• 💆 On-site osteopathy sessions on both sites
• 🤝 Collaborative and supportive work culture Recruitment Process Our recruitment process is designed to be efficient while giving you the opportunity to meet the key stakeholders involved in the role:
• HR Interview with our Talent Acquisition team to discuss your background, motivations, and career aspirations.
• Hiring Manager Interview to explore your experience, skills, and fit with the team and projects.
• Technical Interview with our experts to assess your technical knowledge and problem-solving approach.
• Final Interview to discuss the role, expectations, and answer any remaining questions. We strive to provide feedback throughout the process and ensure a positive candidate experience. 🚀 We look forward to getting to know you and exploring how you can contribute to Exotrail's mission.