At Lightium, we develop ultra-high-speed photonic integrated circuits (PICs) based on thin-film lithium niobate (TFLN). As we industrialize our process, we are strengthening our Operations Team with a Quality Control Intern who will own the final inspection of our dies and the incoming inspection of our wafers. This six-month, full-time, paid internship is aimed at candidates with a precision-handling background (ideally from quality control, microtechnology, watchmaking, optics, or laboratory work) who want structured, hands-on exposure to the semiconductor industry.
Position Summary
We seek a rigorous Quality Control Intern to verify the conformity of every die that leaves our cleanroom and every wafer that enters it. Working alongside R&D and Operations teams, you will apply defined control plans, inspect the parts, and maintain the traceability of our products. You will also support the downstream operations that bring inspected dies to our customers (packaging and labelling) and contribute to creating and improving the procedures that keep these processes consistent. No prior experience with wafers or cleanroom tooling is required; full training will be provided.
This role comes with real ownership and visibility. For a motivated and hands-on individual, it offers the opportunity to grow into a permanent position and take full responsibility for incoming/final inspection and related processes over time.
Key Responsibilities
Final Inspection of Dies:
Receive singulated wafers from the process team, pick individual dies with tweezers and vacuum tools, perform microscope inspection for surface defects, record labelled microscope images, and issue visual inspection reports against defined acceptance criteria.
Incoming Inspection of Wafers:
Inspect prime and semi-finished wafers upon arrival, verify conformity against specifications, and document deviations for the process and procurement teams.
Packaging & Dispatch:
Pick-and-place dies into die trays and GelPak carriers, print and apply labels, vacuum-seal protective bags, prepare carton packages, generate shipment labels with our carriers and complete delivery notes.
Inventory & Traceability:
Contribute to the daily use of our ERP system, support stock accuracy and material flow control, and ensure full traceability of wafers and chips across our R&D and production sites.
Procedures & Continuous Improvement:
Help write and maintain inspection, packaging, and logistics procedures. Support export and customs documentation, and assist with the reception of larger deliveries when needed.
What You’ll Bring
Educational Background:
Apprenticeship, CFC, or technical diploma in a precision-handling field such as Qualiticien/ne en microtechnique (e.g. CNIP), Microtechnology, Watchmaking, Optics, Laboratory Technician, Electronics Assembly, or a related discipline. Current students and recent graduates are welcome to apply.
Technical Skills:
Manual dexterity for handling small, fragile components; a methodical approach to measurement, conformity checks, and reporting; comfort using digital tools such as Excel, basic databases, and ERP systems for logging inspection data. Prior exposure to microscopes, optical or visual inspection, or cleanroom environments is an asset.
Mindset:
Rigor, attention to detail, and strong analytical capability; ability to work autonomously within a multidisciplinary team alongside engineers, production staff, and quality leads; motivation to learn about semiconductors, photonics, and industrial quality standards.
Languages:
Fluent English is required. German or Swiss German is an asset, not a requirement.
What We Offer
A hands-on learning experience
at the forefront of the PIC industry, directly contributing to advancements that redefine technological boundaries.
A vibrant and supportive work environment
where your contributions are valued and can lead to groundbreaking innovations.
A competitively paid position
with the possibility to transition into a full-time role with Employee Stock Option Plan (ESOP) upon outstanding performance.
The ability to participate in continuing education
(training, conferences, events, etc.).
Being treated like a regular member of the team - inclusion at team events and our annual fall retreat.
An opportunity to collaborate
with some of the brightest minds in the field, gaining insights and knowledge that will be invaluable in your future career.
Final Thoughts
We’d love to hear from you if you’re eager to build structured processes, work closely with suppliers, and grow within a fast-moving and result-driven environment. Lightium is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Please note that we are only allowed to offer this internship to European Union or Swiss Nationals or to Third Country Nationals who are enrolled in Swiss universities with internship requirements.
