New

Sr Optical System Engineer (Optical Transmission System)

Molex
life insurance, parental leave
United States, California, Fremont
Jul 18, 2025
Molex possesses a rich heritage in the optical industry. We provide the highest performing and field-proven optical solutions from components, modules to integrated line-cards. We provide cutting edge wavelength management and amplifier technologies. Our comprehensive optical, mechanical, electrical and software integration capabilities enable us to serve the needs of high-density, high-bandwidth, and flexible optical networks. Our team in Fremont is hiring an experienced Sr Optical System Engineer to join our optical transmission team. In this role, the engineer will be responsible for developing optical transmission system simulations for the optical DWDM network. The Optical System Engineer will work customers on their technical needs and develop system modelling and simulation of the physical transport layer of various fiber-optic communication systems. We develop cutting edge network components and modules, such as high speed Optical Transceivers, DWDM/WDM Filters, Optical Amplifiers, Raman Amplifiers, Dynamic Gain Equalizer (DGE) and Wavelength Selective Switch (WSS). What You Will Do Conducting system modelling and simulation of physical transport layer of various fiber-optic communication network to support customers and internal development projects Identify best use of Molex cutting edge optical network components and modules, such as high speed Optical Transceivers, DWDM/WDM Filters, Optical Amplifiers, Raman Amplifiers, Dynamic Gain Equalizer (DGE), and Wavelength Selective Switch (WSS). Studying various aspects of both existing and potential future optical components including fibers to select right technique(s) suitable for modeling nonlinear propagation of optical signals with advanced modulation formats. Evaluating signal-to-noise ratio (SNR), optical SNR (OSNR), bit-error rate (BER), Q-factor, OSNR penalty and Q-penalty of the transmission system, and giving mitigation and components improvement recommendation on optical impairments (including filtering, chromatic dispersion, PMD, PDL, crosstalk, nonlinearities, etc.). Developing system design rules, link-level optical line system control algorithm and other innovative ideas for communication systems improvements. Developing and maintaining optical transmission system testing bed in full characterization of optical components and modules as well as system performance measurement for optimization direction. Performing validation simulation model and maintaining improvement of simulation modelling. Supporting technical discussion with customers for best use of Molex solutions and products. Assess and review designs and project activities to ensure compliance with customer requirements and development guidelines. Troubleshooting customer field network systems issue. Providing technical support for field operations, including issue investigation, log analysis, and resolution of optical network problems. Who You Are (Basic Qualifications) PH.D in Optical Engineering or Physics, or related technical field, or equivalent practical experience. At least 3 years of experience combined from academia and industry in the area of simulating and modeling of system and component for optical communications At least 3 years of hands-on experience in optical communication systems such as operating and maintaining DWDM optical networks. Hands-on experience with the operation, maintenance, and troubleshooting of: DWDM systems, Coherent optical transmission systems, Optical amplification technologies (EDFA, Raman), Optical protection schemes and Pluggable optics and transponders Hands-on experience with optical test equipment for troubleshooting and validation, including OTDR (Optical Time-Domain Reflectometer), OSA (Optical Spectrum Analyzer), BERT (Bit Error Rate Tester), and optical power meters. For this role, we anticipate paying $150,000 - $200,000 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).