Senior Process Engineer

Ligentec; Ecublens; Hybrid; CHF 120,000 - 150,000; Full time

Benefits offered by this job

Home office up to 2 days/week

Job summary

Ligentec, a leader in integrated photonics, seeks a Senior Process Engineer in Ecublens, Switzerland. You will own, develop and qualify core unit processes for the silicon nitride platform, driving high yield and robust processes from concept to industrial scale.

Lead cross-functional teams and manage process capabilities, root-cause analysis, and production transfer. You will bring a university-level degree in Materials Science, Microengineering, Physics, or Chemistry and several years of

Qualifications

• University or HES degree in relevant field.
• Several years leading semiconductor/photonic process engineering projects.
• Deep expertise in unit process development, SPC, DoE, metrology, and failure analysis.

Responsibilities

• Develop, qualify, and document unit processes across lithography, deposition, etching, and back-end.
• Lead end-to-end projects, providing technical direction to engineers.
• Maintain process specifications, set control limits, and interpret capability data to optimize yield.
• Investigate excursions and implement corrective actions via change management.
• Transfer processes to volume production and support ramp-up.
• Drive continuous improvement and contribute to the QMS.

Skills

Process Development

SPC

DoE

Metrology

Failure analysis

Cleanroom

Communication

English

French

Education

University or HES degree in Materials Science, Microengineering, Physics, or Chemistry

Job description

About Us

We're a multicultural team of experts pushing the boundaries of what's possible in integrated optics. Our mission is to make photonic integration accessible and industrially scalable. We deliver best-in-class PIC platforms, design enablement, and integrated solutions that empower our customers to innovate faster and bring light-based technologies from concept to production.

About The Role

As a Senior Process Engineer, you will own, develop, and qualify the core unit processes that make our silicon nitride platform manufacturable, high-yielding, and robust. Positioned at the intersection of process development and industrial scale-up, you will lead complex engineering projects end-to-end, providing technical guidance to fellow engineers while keeping processes strictly within spec. In this high-impact position, you will drive process capabilities, resolve root-cause excursions, and directly shape how our next-generation integrated photonics platforms transition into high-volume manufacturing.

Key Responsibilities

• Process Development & Qualification: Develop, qualify, and thoroughly document unit processes across lithography, thin film deposition, etching, and back-end processing.
• Technical Project Leadership: Lead end-to-end projects of increased complexity, providing technical direction to engineers and ensuring seamless execution and quality.
• Process Control & Yield Optimization: Maintain process specifications, set control limits (SPC), design experiments (DoE), and interpret capability data to optimize stability and yield.
• Excursion & Root-Cause Analysis: Investigate process excursions to root cause and implement long-term corrective actions via documented change management.
• Production Transfer & Ramp: Successfully transfer newly developed unit processes to volume production and support ramp-up activities.
• Quality & Continuous Improvement: Drive continuous improvement initiatives and contribute actively to our Quality Management System (QMS).

What You Bring

• Education: University or HES degree in Materials Science, Microengineering, Physics, Chemistry, or a related field.
• Experience: Proven track record with several years of experience leading complex semiconductor/photonic process engineering projects from concept to completion.
• Process Expertise: Deep expertise in semiconductor unit process development, statistical process control (SPC), Designed Experiments (DoE), metrology, and failure analysis techniques.
• Cleanroom Operations: Rigorous cleanroom discipline, strong process documentation habits, and hands-on familiarity with fab environments.
• Problem-Solving & Communication: Exceptional analytical problem-solving skills paired with strong communication capabilities to collaborate across local and remote teams.
• Mindset: An open-minded, critical, and innovative approach with high technical autonomy and accountability.
• Languages: Working proficiency in English is required; French is a strong plus.

What We Offer

A dynamic role at the heart of the deep-tech revolution where your technical expertise directly impacts product adoption. You will join an international team of specialists, gain deep exposure to market-leading photonic applications, and shape how photonic integration is deployed worldwide.

Practicalities

• Location: Ecublens / Lausanne, Switzerland.
• Work percentage: 100%.
• Languages: English is our working language, other languages are a plus.
• Home office: up to two days per week.
• Start date: As soon as possible.

We are an equal-opportunity employer and welcome applications from all backgrounds.

If you have any question, reach out to Manal Mohamed, HR Business Partner at [e-mail]