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Optical Engineer - LCOS (Liquid Crystal on Silicon)

Molex
life insurance, parental leave
United States, California, Fremont
Apr 07, 2026

Molex possesses a rich heritage in the optical industry. We provide the highest performing and field-proven wavelength management solutions, from components and modules to integrated line-cards. Continuous innovation in passive component function integration, miniaturization, and manufacturing automation, cutting edge WSS and amplification technology and comprehensive optical, mechanical, electrical and software design capabilities enable us to serve the needs of high-density, high-bandwidth, and flexible optical networks of telecom, datacom, hyperscale datacenter and supercomputing.

About the role

Our Fremont team is seeking a highly motivated Optical Engineer to join our team in developing Liquid Crystal on Silicon (LCOS) phase modulators for optical telecommunications and display applications. This role offers the opportunity to work on cutting-edge optical device development, combining device design, experimentation, device and material testing, algorithm development, and data analysis. This person will work with a cross functional team across many geographic regions and may include travel.

What You Will Do

  • Collaborate with cross-functional teams to define and refine test strategies for LC materials, LC devices, and LCOS panels, ensuring robust performance and reliability.
  • Design, develop, and optimize test setups for optical and electrical characterizations.
  • Create and maintain test procedures and documentation for both R&D and manufacturing environments.
  • Partner with design, product, and manufacturing teams to identify failure modes, conduct root cause analysis, and implement effective screening methods.
  • Lead and support device qualification activities, including performance and reliability testing, data analysis, and reporting.
  • Contribute to product development through participation in Failure Mode and Effects Analysis (FMEA), and Design of Experiments (DOE).

Who You Are (Basic Qualifications)

  • Masters degree in Physics, Optical Engineering, Liquid Crystal (LC), or a related technical fiel
  • At least 1 year of research, internship or industry experience of Liquid Crystal materials and Liquid crystal device physics
  • Experience with data analysis and data analysis tools and test automation
  • Experience with experimental design
  • Proficiency in tools and programming languages such as Python, MATLAB, LabVIEW, COMSOL, and LCD Master

What Will Put You Ahead

  • PhD in Optical, Physics, Materials Science, or related technical field
  • Experience with LCOS development and testing
  • Familiarity with a wavelength selective switch (WSS) technologies


For this role, we anticipate paying $100,000 - $150,000 per year. This role is eligible for variable pay, issued as a monetary bonus or in another form.

At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. If you have questions, please speak to your recruiter about the flexibility and detail of our compensation philosophy.

Hiring Philosophy

All Koch companies value diversity of thought, perspectives, aptitudes, experiences, and backgrounds. We are Military Ready and Second Chance employers. Learn more about our hiring philosophy here.

Who We Are

At Koch, employees are empowered to do what they do best to make life better. Learn how our business philosophy helps employees unleash their potential while creating value for themselves and the company.

Our Benefits

Our goal is for each employee, and their families, to live fulfilling and healthy lives. We provide essential resources and support to build and maintain physical, financial, and emotional strength - focusing on overall wellbeing so you can focus on what matters most. Our benefits plan includes - medical, dental, vision, flexible spending and health savings accounts, life insurance, ADD, disability, retirement, paid vacation/time off, educational assistance, and may also include infertility assistance, paid parental leave and adoption assistance. Specific eligibility criteria is set by the applicable Summary Plan Description, policy or guideline and benefits may vary by geographic region. If you have questions on what benefits apply to you, please speak to your recruiter.

Additionally, everyone has individual work and personal needs. We seek to enable the best work environment that helps you and the business work together to produce superior results.

Equal Opportunities

Equal Opportunity Employer, including disability and protected veteran status. Except where prohibited by state law, some offers of employment are conditioned upon successfully passing a drug test. This employer uses E-Verify. Please click here for additional information. (For Illinois E-Verify information click here, aqui, or tu).

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