Prototype Engineer

Optical Systems AddOptics

Posted on Aug 27, 2026 Own the Build. Solve the Real Problems.

Location : Rotterdam, NL Commitment : Full time Experience : 3+ years

Some engineers like to stay in the design phase. You're not one of them.

At AddOptics, we work with R&D and product development teams from some of the most innovative companies in eyewear, consumer electronics, and critical technologies. They come to us with a device concept and a lens design - and they need to know if it works before they commit to production. That's where you come in.

As a Prototype Engineer, you own the full journey from feasibility to delivered prototype. You dig into the technical challenges, figure out what's buildable, and find the solutions that make a concept real. You'll work directly with our customers' engineers and be the technical backbone of the projects you run.

What You'll Be Working On -

• Assessing the technical feasibility and manufacturability of customer lens designs - understanding what works, what doesn't, and why -
• Owning prototype projects end to end: from first technical review through PoC, iteration, and final prototype delivery -
• Working hands-on with optical components, assemblies, and integration challenges - figuring out how lenses interact with the customer's broader device -
• Identifying and solving manufacturing constraints early, before they become expensive problems downstream -
• Running structured iterations based on customer test feedback - adapting quickly without losing engineering rigour -
• Setting up and applying measurement and verification methods to validate prototype performance -
• Being the technical point of contact for our customer's engineering team throughout the project

What We're Looking For -

• 3-7 years of hands-on experience in prototype engineering, product development, or precision manufacturing -
• A solid understanding of optical and mechanical systems - you know how componen...