Certification Engineer

Do you want to contribute to aircraft modifications and certification in a DOA environment?

Are you looking to work on high-impact aerospace projects in an international context?

We are currently looking for a Certification Engineer to strengthen our aircraft modification projects team .

About SII

SII is a European digital and engineering services company with 16,000 experts worldwide .

In the Netherlands, SII supports leading aerospace and industrial companies in engineering, certification, and innovation activities . We value empowerment and entrepreneurship , offering a stimulating work environment where our consultants can grow and make an impact.

SII Netherlands is part of an EASA Approved Design Organization (DOA) , enabling us to approve both minor and major aircraft modifications . Our certification engineers form a highly skilled team making these projects possible.

Your Role

As a Certification Engineer , you will be part of our aircraft modification team, supporting the full lifecycle of design and certification activities.

You will ensure that all modifications comply with airworthiness regulations , while contributing to innovative and efficient technical solutions .

What you’ll do

• Analyze and interpret customer requirements
• Define and review aircraft modifications, including: Metal and composite structures, Cabin interiors and cabin safety aspects and Support to electrical design aspects
• Conduct feasibility studies and optimize existing systems
• Participate in design reviews and interface coordination
• Prepare and review technical and certification documentation , including Change classification, Compliance demonstration and Flammability assessment
• Support testing activities and evaluate results
• Ensure compliance with EASA certification requirements

Your profile

• Engineering degree (Aerospace, Mechanical, or equivalent – HBO level or higher)
• Minimum 2 years of experience in aerospace engineering
• Experience in certification and/or aircraft modifications
• Knowledge of cabin safety requirements is a strong plus
• Good understanding of structures (metal/composite) and/or interiors / systems
• Strong communication and stakeholder management skills
• Comfortable working in an international environment
• Fluent in English (additional languages are a plus)
• Proactive, flexible, and solution-oriented
• A good sense of humor

What we offer

• Work on aircraft modification and certification projects
• Exposure to design, stress, and certification disciplines
• A collaborative and friendly team environment
• Open and entrepreneurial culture