At Lumiphase, we are looking for a Process Backend Engineer to join our team and contribute to the development of our next-generation integrated photonic technology. In this role, you will be at the core of our innovation, extracting and analyzing complex fabrication data to support with the optimization of both individual components and full photonic integrated circuits.

You will collaborate closely with cross-functional teams, applying advanced data analytics to drive process improvements, ensure quality, and enable the successful development of cutting-edge photonic solutions. This position offers versatile responsibilities in a dynamic environment, where your expertise will directly shape the performance and scalability of our technology.

• Development of backend production processes from die sorting to KGD shipment including automatic optical inspection (AOI)
• Backend equipment selection, installation, maintenance and operations
• Development of fiber attach processes
• Development of AOI recipes; analysis of particle data; trigger improvements
• Documentation of processes, work instructions and maintenance instructions; training technicians and operators on tool operation
• Contributions to other backend or packaging processes, such as dicing, assembly and wire bonding
• Coordination of activities with product- and data engineering and other groups

• Master degree in engineering or related field
• Several years experience in semiconductor backend processing
• Experience with automatic optical inspection, photonics, equipment responsibility, programming (e.g. Python) and/or semiconductor industry are a plus
• Comfortable working in a dynamic startup environment, ready to deal with rapidly shifting priorities
• Solid interpersonal and communication skills and team working attitude.
• Creative, motivated, critical-thinking, and hands-on attitude with attention to details
• Fluent English (spoken and written) with strong verbal and written technical communication skills; German is a strong plus

At Lumiphase, we offer a young, fast-growing, and dynamic working environment with broad options for personal development. We have world-class technical people who love to share their skills with new team members. People from all around the world have joined us, creating an open-minded and diverse team spirit. We are all dedicated to creating superior photonic products to solve hard problems in the field of communication as a big team effort.

We offer a variety of benefits to create a positive experience at work, and enable a healthy and enjoyable work-life balance.

• ZVV (Zürich region) annual transport pass and Halbtax
• 2 additional parental leave weeks,
• Flexible hours and hybrid work possibilities,
• On-site fitness room, canteen, and top quality espresso machine,
• Weekly Yoga classes,
• and a lot of fun team events!

We look forward to welcoming talented, new members to our team.

Our recruitment process consists of three stages:

1. A 30 min. phone interview to discuss your general career motivations, and present our company and this role.
2. A 1-1.5 hour phone interview with 1-2 members of the hiring team to deep dive into the core skills requirements.
3. An on-site visit to interview with and meet many members of the team that you would be working in. This often includes lunch and gives you a strong sense of the company culture and individuals.

Then, both parties take their decisions! We aim to complete all steps in one month, but also allow for modifications to ensure both sides have a full picture of the skills and culture match to take the decision in an informed way.

We built our company culture from day one, step by step, with the direct contribution of all our employees. Our culture finds its foundation in two core values:

• "Run, Don't Rush" emphasizes the importance of maintaining a steady, purposeful pace to achieve excellence without compromising quality.
• “It’s BTO: It's Better Together" highlights our commitment to teamwork and the belief that the only way to achieve our goals is by working in harmony and supporting each other.

At Lumiphase, we believe diversity strengthens our ability to achieve our mission. We are committed to fostering an inclusive environment where all individuals—regardless of race, ethnicity, gender, age, sexual orientation, physical ability, socio-economic background, or any other characteristic—feel valued, respected, and empowered.

Studies suggest that people from underrepresented groups, including women, often hesitate to apply unless they meet every listed qualification. If this role excites you but you’re not sure you check every box, we’d still love to hear from you. You might be just the person we’re looking for.