Mechanical Design Engineer

DOA21 Ltd is a European Aviation Safety Agency (EASA) approved Design Organisation (DOA) based in Malta. We specialize in offering tailored aircraft modifications and repairs across a wide range of disciplines, including Structural, Electrical, Avionics, ECS, Cabin Safety, including Flight Conditions/Permit to Fly.

We are seeking an experienced Mechanical Design Engineer to join its Design Organisation. The successful candidate will support the development, substantiation, certification and release of mechanical design solutions for aircraft modifications, repairs and certification projects. Working within the company’s approved Design Organisation procedures, you will contribute to delivering safe, practical and compliant engineering solutions in accordance with applicable EASA Part 21 and airworthiness requirements.

Key Responsibilities

• Prepare mechanical design data for aircraft modifications, repairs and installations.

• Produce and review engineering, installation, assembly and interface drawings, together with parts lists.

• Develop design solutions for aircraft structures, interiors, equipment installations, brackets, panels, fairings and other mechanical installations.

• Support mechanical installation, equipment mounting, structural interface and cabin interior design activities.

• Prepare or contribute to design reports, substantiation reports, stress reports, test plans and certification documentation.

• Support compliance demonstration against applicable certification requirements, including CS-23 and CS-25 where relevant.

• Review aircraft manuals, drawings, specifications, service bulletins and technical records.

• Support aircraft surveys, embodiment activities, conformity inspections and ground/flight testing where required.

• Work closely with Compliance Verification Engineers, suppliers, customers, maintenance organisations and regulatory authorities.

• Identify and communicate technical, certification and compliance risks at an early stage.

• Ensure all engineering records and design data are accurate, controlled and produced in accordance with DOA procedures.

About You

You will ideally have:

• A degree, apprenticeship or equivalent experience in Mechanical Engineering, Aerospace Engineering, Aircraft Engineering or a related technical discipline.

• Previous mechanical design experience within aviation, aerospace, defence, automotive or another regulated engineering environment.

• Strong knowledge of mechanical design principles, materials, fasteners, structures, installations and manufacturing methods.

• Experience producing engineering drawings and technical design documentation.

• Experience with CAD software such as CATIA, SolidWorks, AutoCAD, Inventor or equivalent.

• The ability to interpret aircraft manuals, drawings, specifications and technical documentation.

• Strong attention to detail with a practical, solution-focused approach.

• Excellent communication skills and the ability to work both independently and collaboratively.

Desirable Experience

Previous experience within an EASA Part 21J Design Organisation would be highly advantageous, together with knowledge or experience of:

• EASA Part 21 Subpart J

• CS-23 and/or CS-25

• Aircraft modifications, repairs, STCs and major/minor changes

• Aircraft interiors, avionics installations, mission equipment or structural repairs

• Equipment mounting, bracket and structural interface design

• Flammability, vibration, fatigue and structural substantiation requirements

• Aircraft surveys, embodiment, conformity inspections or flight testing

• Certification reports, compliance checklists and design approval data

We are looking for someone who is professional, technically curious, detail-oriented and solution-focused, with the ability to take ownership and work effectively within a dynamic, small-company environment where airworthiness, safety and compliance are fundamental.