Aviation Certification Engineer - Aircraft Modifications

Groupe SII; Haarlem; Hybrid; EUR 55,000 - 75,000; Full time

Job summary

SII Netherlands is seeking a Certification Engineer to strengthen 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 in an international environment. Fluent English is required, and the role offers collaboration with a global team.

Qualifications

• Engineering degree in aerospace or mechanical field (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.

Responsibilities

• Analyze and interpret customer requirements for aircraft modifications.
• Define and review modifications including structures, interiors, and systems.
• Conduct feasibility studies and optimize existing systems.
• Participate in design reviews and interface coordination.
• Prepare and review technical and certification documentation, including Compliance demonstration and Flammability assessment.
• Support testing activities and evaluate results.
• Ensure compliance with EASA certification requirements.

Skills

Communication skills

English language

Stakeholder management

Proactive mindset

Team collaboration

Education

Aerospace/Mechanical Engineering degree

Job description

SII Netherlands is seeking a Certification Engineer to strengthen 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 in an international environment. Fluent English is required, and the role offers collaboration with a global team.