Senior Process Engineer

Startupvalleys; Ecublens; Hybrid; CHF 120,000 - 180,000; Full time

Benefits offered by this job

Home office up to two days per week

Job summary

LIGENTEC in Ecublens, Switzerland, is seeking a Senior Process Engineer to own, develop and qualify core unit processes for our silicon nitride platform. You will lead complex projects, drive process capabilities, and ensure strict adherence to specs in a cleanroom environment.

The role requires collaboration across local and remote teams, with an emphasis on yield improvement, production transfer, and continuous quality enhancements. English is the working language; French is a plus.

Qualifications

• Degree in materials science, microengineering, physics or chemistry.
• Experience leading semiconductor/photonic process projects.
• Strong knowledge of SPC, DoE, metrology and failure analysis.
• Cleanroom discipline and rigorous documentation.

Responsibilities

• Develop, qualify and document unit processes across lithography, deposition, etching and backend.
• Lead end-to-end engineering projects with cross-functional teams.
• Maintain process specs, control limits, and DOE to optimize yield.
• Investigate excursions and implement corrective actions through change management.
• Transfer processes to volume production and support ramp-up.
• Drive quality improvements within the QMS.

Skills

Process development

SPC

DoE

Metrology

Root-cause analysis

Cleanroom operations

Technical communication

English proficiency

French a plus

Education

Degree in Materials Science / Microengineering / Physics / Chemistry

Job description

Posted 22 Oct 2026LIGENTEC Ecublens, Switzerland · MapApply# Senior Process EngineerEngineeringOriginal posting — from LIGENTECOpen original#### About usWe'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 roleAs 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 offerA 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.Please submit your application through our career page as soon as possible.If you have any question, reach out to Manal Mohamed, HR Business Partner at [e-mail]