Experimental Physicist, Soft X-ray Source Development

Invisix; Eindhoven; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Employee Share Ownership Plan

Learning and development budget

Flexible working arrangements

Job summary

Invisix is seeking an Experimental Physicist to advance the next-generation soft X-ray source for its metrology systems in Eindhoven. You will take setups from assembly to stable operation, identify performance limits and translate findings into hardware specs.

You'll collaborate with physicists and engineers, perform diagnostics, optimize the SXR source, solve hardware issues, and contribute to test bench design as the team grows. Fluency in English and hands-on lab work are essential.

Qualifications

• PhD in physics/optics/photonics or a related field, or MSc with 3–5 years of relevant experience.
• Strong grasp of physics; safe, structured lab work, independently and in a team.
• Hands-on experience with high-power or ultrafast laser systems and optical setups.
• Experience with optical measurement and diagnostics (spectroscopy, imaging, beam profiling, pulse characterization, power measurement).
• Experience with vacuum systems and lab instrumentation (detectors, motion control, data acquisition).
• Programming skills for data analysis or instrument control (Python, MATLAB, LabVIEW).
• Good spoken and written English.
• Active use of AI tooling to boost efficiency.

Responsibilities

• Build, align and commission optical and vacuum systems of the test bench to stable operation.
• Set up and run diagnostics to characterize the SXR light and optical systems generating it.
• Measure and optimize SXR source performance and translate learnings into specifications for metrology equipment.
• Solve hardware issues and test new ideas quickly.
• Control experiments and analyze data with detectors, motion control and data acquisition.
• Collaborate with physicists and engineers and take on adjacent responsibilities as the team grows.

Skills

Analytical thinking

Hands-on experimental work

High-power laser systems

Optics and metrology

AI tooling usage

English communication

Education

PhD in physics/optics/photonics or related field

MSc with 3-5 years high-tech experience

Tools

Python

MATLAB

LabVIEW

Job description

About Invisix

Semiconductor manufacturers can't build what they can't measure. Invisix Measuring Systems is a fast-growing scale-up in the high-tech industry, developing next-generation metrology solutions for the semiconductor sector. We work at the intersection of optics, software, and data.

We're a small team, but the depth of knowledge inside Invisix is anything but small. Our culture is professional and fast-paced, with short communication lines and a strong sense of shared purpose. Everyone here is committed, and everyone knows their work directly contributes to something bigger.

The Role

We're looking for an Experimental Physicist to build and improve the next-generation soft X-ray (SXR) source at the core of our metrology equipment.

You'll work in our lab with experienced colleagues who know this technology inside out. You take setups from first assembly to stable operation, find out what limits their performance, and turn what you learn into specifications for our metrology equipment.

Key Responsibilities

• Build, align and commission the optical and vacuum systems of our test bench, and bring them into stable operation

• Set up and run diagnostics to characterize the SXR light and the optical systems that generate it

• Measure and optimize the performance of the SXR source, and turn what you learn into specifications for our metrology equipment

• Solve hardware issues, find practical solutions and test new ideas quickly

• Control experiments and analyze the data, working with detectors, motion control and data acquisition

• Work with our experienced physicists and engineers, and take on adjacent responsibilities as the team grows, such as test bench design or contacts with suppliers

Is this you?

• PhD in physics, optics, photonics, electrical engineering or a related field, or an MSc in one of these fields with 3 to 5 years of relevant experience in a high-tech environment

• A strong grasp of the physics, so an unexpected result becomes a clue rather than a roadblock, and a safe, structured way of working in the lab, independently and as part of a team

• Hands‑on experience with high‑power or ultrafast laser systems and optical setups, in academia or industry

• Experience with optical measurement and diagnostics, such as spectroscopy, imaging, beam profiling, pulse characterization or power measurement

• Experience with vacuum systems and lab instrumentation, such as detectors, motion control and data acquisition

• Programming skills for data analysis or instrument control, for example in Python, MATLAB or LabVIEW

• Good spoken and written English

• Active use of AI tooling in your daily work (data analysis, instrument control scripts, documentation) to boost efficiency

Nice to have

• Experience with SXR or XUV optics and detection

• Experience in laser or optical engineering

• Experience with opto‑mechanical or in‑vacuum design

• Experience with EUV or SXR metrology for semiconductors

What We Offer

• A hands‑on role in our lab where your work directly shapes the product, with experienced physicists and engineers to learn from every day

• Competitive salary and benefits, including an Employee Share Ownership Plan

• A learning and development budget to support your growth

• Flexible working arrangements, and room to grow into adjacent responsibilities as the team scales

Interested?

If this sounds like your kind of challenge, we'd like to hear from you, even if you only recognize yourself in part of this description. Submit your resume, and let's find out together if there's a match.

If this isn't quite the right position for you but you're still interested in Invisix, reach out to us at [e-mail].

Diversity & Inclusion

We're committed to a diverse and inclusive workplace, where ideas and individuals flourish. We welcome applicants from all backgrounds and judge candidates on merit and potential contribution, regardless of race, ethnicity, gender, sexual orientation, age, religion, disability, or other identity characteristics. What we're looking for is talent with integrity, a collaborative mindset, and a drive to make an impact.

Your Data

Your application data is processed by Invisix and kept in our applicant tracking system so we can consider you for this role and future opportunities. See our privacy policy for details: invisix.com/privacybeleid/