Quality Assurance Engineer - Defense

LAMBDA-X HIGH-TECH ( provides state-of-the-art optical technologies and engineering services for customized optical systems. Our mission is to be the trusted partner in the field of optics for the deployment of innovation programs, from concepts to production through prototyping. We focus on high-tech innovation industries active in building a better environment (Space and Defense), a healthier world (Life Sciences, Medical Technology), and more robust processes (Scientific, Metrology, and Quality Control Equipment).

Leveraging 30 years of expertise in optical engineering and working in close cooperation with our customers, all Lambda-X team members participate in providing innovative and differentiating optical-based solutions in multiple and complex industrial environments. Lambda-X is a member of the Verhaert Masters in Innovation Group ( one of the biggest product development companies in Europe, offering all the necessary expertise to innovate successfully.

In view of its growth, Lambda-X is actively looking for a (m/f/x):

Quality Assurance Engineer – Defense

Your challenges

• Investigate recurring non-conformities and lead Root Cause Analysis using structured problem-solving methodologies such as 5 Whys, Ishikawa (Fishbone Diagram), FTA, or equivalent approaches.
• Define, implement, and monitor corrective and preventive actions to ensure sustainable quality improvements.
• Act as the main Quality interface for a strategic Defense project, maintaining regular interactions with the customer and participating in weekly quality reviews.
• Ensure compliance with customer requirements through the review, validation, and maintenance of project quality documentation.
• Collaborate closely with cross-functional teams to improve manufacturing performance, product quality and process efficiency.
• Monitor project milestones from a quality perspective, ensuring alignment between production schedules, quality gates and customer delivery expectations.
• Contribute to broader Quality Assurance activities across the organization, including non-conformity management, internal audit follow-up, quality onboarding, and the deployment of best practices.
• Demonstrate a hands-on mindset by supporting Quality Control activities when required, including inspections, testing, and verification activities in a high-precision manufacturing environment.

Your profile

You are our future teammate if you bring the following strengths:

• Strong team spirit and collaborative mindset .
• Quality-focused, rigorous, and pragmatic in your approach.
• Flexible, autonomous, and eager to continuously develop your skills and expertise.
• Able to react quickly, take ownership , make sound decisions, and drive solutions in a fast-paced environment.
• Strong communication skills , with the ability to synthesize and present information clearly and effectively.
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Your competences

• Master’s degree in engineering (Mechanical, Electromechanical, …) or equivalent through relevant professional experience.
• Proven Quality Assurance experience in a manufacturing environment , ideally involving high-precision assembly or advanced industrial processes.
• Fluent in French and English, with strong written and verbal communication skills.
• Hands-on experience in Root Cause Analysis is essential, with demonstrated use of structured problem-solving methodologies such as 5 Whys, Ishikawa (Fishbone Diagram), or equivalent approaches.
• Knowledge of ISO 9001 ; familiarity with EN 9100 is highly appreciated.
• Experience in cleanroom environments and associated standards would be a significant advantage.
• Knowledge of continuous improvement methodologies and quality tools is considered a strong asset.

We Offer

• A challenge with real added value in a continuously growing work environment, offering team spirit and a culture focused on achieving tangible, innovative results.
• An attractive salary package including insurance, a company car,... complemented by an in-depth onboarding process and a unique learning curve.
• The opportunity to work in a highly innovative sphere and to contribute to major scientific breakthroughs through your expertise and energy.
• And most importantly: an exceptional team with remarkable expertise and a distinctive approach to collaboration.

Location: Nivelles, Belgium.

• Ready to join us? Please send your cover letter and resume to: dle@lambda-x.com .