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As a Senior Mechanical Engineer, you will contribute to the mechanical design and development of Kreios Space’s satellite platform and ABEP thruster systems. You will work closely with multidisciplinary teams across the full development cycle, supporting the design, integration, validation and improvement of both laboratory and flight hardware. Your mission will be to ensure that mechanical solutions are robust, reliable and aligned with the demanding requirements of space environments. Senior professional with 5+ years of experience in mechanical design, ideally in the aerospace sector or other high-performance technology environments. Strong experience with CAD tools such as SolidWorks or similar. Experience with FEM tools , such as FEMAP and Nastran . Solid understanding of materials, structures and mechanical design in demanding operating conditions; space environment knowledge is a strong plus. Experience supporting the development, integration and validation of hardware . Comfortable working in multidisciplinary teams , contributing actively across different stages of the development process. Analytical and detail-oriented, with a rigorous approach to design, validation and problem-solving. Proactive mindset, with the ability to suggest improvements and adapt in fast-paced, technically demanding environments. Good communication skills, with the ability to document and explain technical solutions clearly. At Kreios Space, you won’t be joining a large, layered organization where engineering is far from decision-making. You will work close to the core of the technology, alongside the people designing, building and testing it. This is a hands-on role in a deep-tech environment where mechanical engineering has a direct impact on hardware performance, manufacturability and iteration speed. You will contribute to real systems, real constraints and real technical trade-offs, not just documentation or isolated design tasks. We are building ambitious space technology from the ground up, which means high ownership, fast learning and close collaboration across disciplines. If you enjoy working on complex hardware, moving between design and practical implementation, and being part of a team that is shaping the product as it evolves, this is the kind of environment where you can do your best work.