Lead Materials & Process Engineer — Optical Casting

AddOptics; Rotterdam; Hybrid; EUR 80,000 - 110,000; Full time

Benefits offered by this job

Competitive salary and benefits

Close-knit team

Job summary

AddOptics in Rotterdam, NL, seeks a Materials & Process Engineer to own optical casting development from material selection to production-ready SOPs. You will implement new PU systems, monomer formulations, and silicone tooling, turning lab concepts into scalable processes.

With 5+ years in optics or precision polymer processing, you’ll diagnose curing cycles, reduce bubbles and residual stress, and document workflows for the production team.

Qualifications

• 5+ years of hands-on process or materials engineering experience in optics, ophthalmic manufacturing, or precision polymer processing.
• Deep familiarity with optical casting materials — polyurethane systems, monomer formulations, silicone tooling.
• Understanding of what makes an ophthalmic lens optically acceptable: bubble-free, stress-free, dimensionally accurate.
• Experience developing and qualifying curing cycles and diagnosing issues affecting performance.
• Results-driven mindset with focus on practical solutions over textbook approaches.
• Comfort working with suppliers, asking critical questions and pushing for solutions.
• Ability to document processes clearly and train others to execute them.

Responsibilities

• Implementing new ophthalmic casting materials into production from initial evaluation to SOP-ready process.
• Eliminating bubbles, controlling shrinkage, reducing residual stress for consistent optical quality.
• Developing and optimising curing cycles that are predictable, repeatable, and scalable.
• Collaborating with material and machinery suppliers to troubleshoot and push for improvements.
• Evaluating new materials for feasibility and manufacturing compatibility.
• Writing clear SOPs so the production team can execute without direct supervision.
• Building the knowledge base and process framework for materials engineering at AddOptics.

Skills

Materials science

Optical casting

Process ownership

Supplier engagement

Education

BSc/MSc in Materials Science or related field

Tools

Silicone tooling

Curing cycle optimisation

Job description

AddOptics in Rotterdam, NL, seeks a Materials & Process Engineer to own optical casting development from material selection to production-ready SOPs. You will implement new PU systems, monomer formulations, and silicone tooling, turning lab concepts into scalable processes.

With 5+ years in optics or precision polymer processing, you’ll diagnose curing cycles, reduce bubbles and residual stress, and document workflows for the production team.