Senior Mechanical Engineer

At Orbital Paradigm, we’re building autonomous space reentry capsules to enable routine, fast-return transport from orbit to Earth, supporting in-space manufacturing, science, and logistics. We are seeking a Senior Mechanical Engineer with at least 5 years of experience to work on the design, simulation, analysis, development, and testing of advanced space hardware, including re-entry vehicles and mission-critical mechanical subsystems. The role involves taking ownership of complex design tasks, from requirements definition through detailed design, analysis, prototyping, and environmental testing. Please notice this is a position mainly aimed at engineers with structural simulation and analysis expertise. Key Responsibilities In charge of structural design, simulation and verification activities for aerospace structures and components Perform FEA (Finite Element Analysis) for stress, vibration, fatigue, and thermal loads. Support concept development through to detailed design, testing, up to AIT and qualification Collaborate with multidisciplinary teams (aerodynamics, propulsion, systems, manufacturing). Document engineering analyses, assumptions, and results for internal and external stakeholders. Provide mentorship and technical guidance to junior engineers. Contribute actively to design reviews and help establish engineering best practices. Adapt to evolving requirements and fast-paced iterations. Required Qualifications Bachelor’s or master’s degree in mechanical / aerospace engineering or similar (PhD a plus). 5 years of experience in aerospace mechanical / structural engineering. Strong expertise in structural simulation (FEA / CAE), including static, dynamic, thermal, and fatigue analysis. Solid understanding of aerospace materials and environmental testing ( Shock, Vibrations and Thermo-mechanical) Experience with CAD software (e.g., CATIA, NX, SolidWorks). Strong problem-solving ability and analytical mindset. Good communication and documentation skills in English. Preferred Qualifications Experience in aerospace, automotive, or other high-performance industries Experience in a startup or small-company environment with fast design iterations. Hands-on experience with manufacturing processes (machining, composites, additive manufacturing). Familiarity with systems engineering and project management. Track record of successful design from concept to flight-ready hardware. Personal Attributes Startup mindset : proactive, resourceful, adaptable, and comfortable with ambiguity. Willingness to go beyond the job description and take ownership of outcomes. Team player with strong collaboration skills. Passionate about aerospace innovation and eager to contribute to the growth of the company. What We Offer Location : Madrid, Spain Remote : Hybrid (2 days / week from home 2 fully remote weeks / year) Be part of a fast-growing space startup with real responsibilities. 30 vacation days (23 flexible, 7 during holidays). Salary range indicatively between 40 and 55 KEUR / year depending on seniority and profile Company shares plan Opportunities to grow with the company.