LOCATION: Burgos KEY RESPONSABILITIES * Create 3D models and 2D drawings of mechanical components and assemblies * Assist in prototype manufacturing, assembly and functional testing * Prepare technical documentation: BOMs, assembly manuals, test procedures, validation reports * Perform basic mechanical calculations (tolerances, loads, materials selection…) * Support the execution of test plans and validation checks * Participate in mechanical integration and assembly activities (hands\-on work) * Help in defining and improving manufacturing workflows and processes * Coordinate with suppliers for components, quotes, manufacturing and deliveries * Collaborate with other engineering departments (avionics, production…) * Ensure compliance with quality standards, safety rules, and internal procedure QUALIFICATIONS * Bachelor’s degree in Mechanical Engineering, Aerospace Engineering or related field * 1–3 years of relevant experience in mechanical design (professional or justified through academic/personal projects) * Proficiency in 3D CAD design (preferably SolidWorks; other CAD tools accepted) * Practical experience with prototyping, machining, workshop tools and assembly * Basic knowledge of additive manufacturing, CNC machining and experience using workshop tools (drills, saw, torque wrench, hand tools...) * Good understanding of manufacturing processes and mechanical drawings * Strong analytical and problem\-solving skills * Advanced English (spoken and written) * Ability to work hands\-on, independently and as part of a team * Strong attention to detail, quality\-oriented and proactive attitude VALUABLE / NICE\-TO\-HAVE * Experience or strong interest in the aerospace industry * Knowledge of FMEA, requirements definition, FEA tools (including thermal) or dynamical calculation * Experience writing technical documentation in English * Familiarity with industrial safety and workshop best practices Salary: 30,000\.00€\-50,000\.00€ per year depending on experience Job Types: Full\-time, Permanent Pay: 30,000\.00€ \- 50,000\.00€ per year Education: * Bachelor's (Preferred) Experience: * Mechanical Engineer: 1 year (Required) Language: * English (Required) * Spanish (Required) Work Location: In person