At Orbital Paradigm, we design, develop, manufacture, and operate reusable orbital logistics systems. Our spacecraft perform multiple orbital mission profiles and return safely to Earth through hypersonic atmospheric reentry and landing with pinpoint accuracy for rapid refurbishment and reuse.
Role Description
We are looking for a Mechanical Design Engineer to join our mechanical engineering team. The role covers the full hardware development lifecycle, from concept and detailed design through manufacturing, assembly, integration, and testing.
The position requires strong practical engineering capability in mechanical design, CAD modelling, manufacturing processes, tolerancing, technical drawings, fabrication methods, and mechanical interfaces. The engineer will work closely with suppliers, manufacturing partners, and multidisciplinary teams to deliver flight-ready hardware.
This is a hands-on role involving direct participation in fabrication, assembly, integration, troubleshooting, and test activities.
Key Responsibilities
Develop 3D CAD models, assemblies, and manufacturing drawings
Design mechanical systems, structures, mechanisms, and interfaces
Perform tolerance analysis and apply GD&T; principles
Select materials, fastening methods, and manufacturing approaches
Ensure designs meet functional, manufacturability, and integration requirements
Prepare and maintain engineering documentation, BOMs, and CAD models
Interface with suppliers, machine shops, and manufacturing partners
Participate directly in hardware fabrication, machining, assembly, and integration activities




Support spacecraft and subsystem integration campaigns, including hands-on assembly and fit-check activities
Support functional, environmental, and qualification testing campaigns
Troubleshoot and resolve manufacturing, integration, and test-related hardware issues and non-conformances
Contribute to iterative design improvements based on manufacturing and test results
Collaborate across disciplines to support successful system development
Participate in design reviews and technical trade studies
Required Qualifications
4+ years of relevant professional experience in aerospace, automotive, or other high-performance industries.
Degree in Mechanical Engineering, Aerospace Engineering, or related field
Strong mechanical design and engineering fundamentals
Proficiency with CAD tools (such as Hypermesh, SolidWorks, CATIA, or equivalent)
Experience producing manufacturing drawings and technical documentation
Practical understanding of mechanical manufacturing, fabrication, assembly, integration, materials, fastening systems, and GD&T;/tolerancing.
Demonstrated end-to-end experience designing, manufacturing, assembling,



and validating at least one mechanical component or hardware subsystem from concept through production and test
Experience with spacecraft structures, aerospace mechanical hardware, or mechanically demanding flight or high-performance systems.
Ability to work effectively in fast-paced hardware development environments
Strong problem-solving ability and analytical mindset.
Full proficiency in English, written and spoken.
Preferred Qualifications
Familiarity with aerospace industry standards such as ECSS, NASA, or MIL
Hands-on experience with manufacturing processes (machining, composites, additive manufacturing).
Basic proficiency with one or more programming languages such as Python and MATLAB.
Experience in a startup or small-company environment with fast design iterations.
Good proficiency in Spanish
What We Value
Excellence in technical work, execution, and professional conduct
Strong ownership mindset, with the ability to drive activities to clear outcomes through accountability, proactivity, and resourcefulness
Clear, efficient, direct, and constructive communication
Team-first attitude with low ego and strong cross-functional collaboration
What We Offer
Location: Madrid, Spain (office-first)
Flexible hybrid work (2 days/week from home + 2 fully remote weeks/year)
Salary depending on experience and profile between 40'000 and 55'000 EUR gross per year
Relocation package depending on seniority and profile
Versátil compensation (meal vouchers, health insurance, public transport)
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📌 Mechanical & Thermal - Mechanical Design Engineer (Madrid)
🏢 Orbital Paradigm
📍 Madrid