Mechanical Engineer (m/f/d)

## Key Responsibilities Design for Manufacture & Production Readiness - Embed design-for-manufacture (DFM) and design-for-assembly (DFA) thinking throughout the design process, proactively considering machinability, inspection accessibility, assembly sequence, and tolerance stack-up from the earliest stages - Engage proactively and often with the production engineering team to sense-check designs against manufacturing capability, raising and resolving producibility concerns before formal drawing release - Prepare complete and formally controlled design packages for job order handover, including fully detailed drawings with appropriate GD&T, complete BOMs with material specifications and bought-in part references, and any necessary manufacturing notes or special process requirements - Generation of production and assembly procedures and related documentation necessary to raise job orders for production - Lead or support production readiness reviews (PRRs), presenting design intent, critical features, and known risks to the production team in a structured and accessible way - Own drawing and model revisions arising from production queries, non-conformances, or concession requests, turning them around promptly to minimise disruption to the production schedule Mechanical Design & Analysis - Develop detailed 3D CAD models and 2D engineering drawings of hybrid rocket motor components including combustion chambers, fuel grain housings, oxidiser injectors, nozzle assemblies and structural interfaces - Define appropriate materials, surface treatments, and joining methods for components operating in the demanding thermal, chemical, and mechanical environment of a hybrid rocket motor - Support the creation and maintenance of design requirement documents, interface control documents (ICDs), and design justification reports as required Cross-Functional Collaboration - Work as an active member of the propulsion team alongside propulsion engineers, systems engineers, and test engineers, ensuring quality mechanical design - Liaise with external suppliers and subcontractors on manufactured and bought-in components, providing clear technical briefs and reviewing supplier drawings and quality documentation - Coordinate with the procurement team on lead times, material availability, and alternative sourcing options for critical components ## Basic Qualification - Degree in Mechanical Engineering or Aerospace Engineering (BEng minimum; MEng or MSc preferred) - Proven experience (typically 2–6 years) in detailed mechanical design and drawing release within an engineering environment, ideally aerospace, defence, or high-performance mechanical systems - Practical familiarity with metallic and composite manufacturing processes — including CNC milling and turning, filament winding, and hand lamination — with an understanding of how each process constrains and informs design decisions around geometry, tolerancing, fibre orientation, and surface finish - High proficiency in 3D parametric CAD (e.g. CATIA, Siemens NX, SolidWorks, or Creo) and production of fully detailed manufacturing drawings to recognised standards - Strong command of geometric dimensioning and tolerancing (GD&T / BS 8888 or ASME Y14.5) and tolerance analysis methods - Experience preparing complete design packages for handover to a manufacturing or production team, and an understanding of what constitutes a truly production-ready drawing release - Familiarity with engineering change management processes and working within a controlled PDM or PLM environment ## Desired Experience - Direct experience designing components for rocket motors, jet engines, gas turbines, or other high-temperature, high-pressure propulsion systems - Knowledge of hybrid or solid propellant systems, oxidiser feed system design, nozzle aerothermodynamics, or combustion chamber structural design - Familiarity with pressure vessel design codes (e.g. PD 5500, ASME BPVC) or structural analysis in accordance with ECSS or MIL standards - Hands-on experience with machined metallic components, knowing how design choices translate into real machining operations, tooling constraints, and inspection challenges - Exposure to composite structure design or non-metallic materials in propulsion or structural applications ## Benefits - €50 monthly Spendit Card – because it’s the little extras that make a difference - Christmas bonus on top - Job bike leasing for a sporty and sustainable commute - €60 gift for special occasions (birthday, wedding, birth of a child) - Regular team events – from Christmas parties to adventure offsites - 30 days of vacation to fully recharge - Flexible working hours (flextime) to match your personal rhythm - 1 day of remote work per week - Free coffee, tea & water – fuel for big ideas - Open, respectful feedback culture at eye level - Personal development opportunities through trainings, coaching & language courses - Buddy program with structured onboarding, including a welcome package - A diverse and inspiring startup environment, where talented people from over 16 nations collaborate to build something extraordinary - Hands-on involvement across end-to-end development processes in a fast-growing New Space startup