Senior Device Electrical Engineer – High-Speed Optoelectronics

MKS Inc.; Milpitas (CA); On-site; USD 102,000 - 169,000; Full time

Job summary

MKS Inc. in Milpitas, CA, seeks a Senior Electrical Engineer – High-Speed Optoelectronics to design, analyze, and test high-speed optoelectronics devices.

You will contribute to product development from concept through production and collaborate with cross-functional teams to optimize receiver performance. The role requires 8+ years in electronics or device development, experience with photodiodes, TIAs, optical receivers, RF components, and device/circuit simulation.

Qualifications

• BS or MS in Electrical Engineering or Physics required.
• 8+ years in electronics or device development.
• Experience with high-speed optoelectronics devices and testing.
• Proficient in device and circuit simulation tools.
• Hands-on laboratory work and product development experience.

Responsibilities

• Design, analyze, and test high-speed optoelectronics devices.
• Contribute to product development from concept through production.
• Participate in design reviews and technical problem solving.
• Support manufacturing, sustaining engineering, and field investigations.
• Collaborate on designs of high-speed photodiodes (>100 GHz).
• Carry out simulations and develop models to predict performance.
• Travel up to 10% for work across facilities and suppliers.

Skills

High-speed electronics

Optoelectronic design

Photodiodes

Device and circuit simulation

Lab debugging

Product development lifecycle

RF components analysis

Education

BS or MS in Electrical Engineering or Physics

Tools

Oscilloscopes

VNAs

BERTs

Optical test equipment

GDS II / Layout tools

Job description

A Day in Your Life at MKS: As a Senior Electrical Engineer – High-Speed Optoelectronics Device at MKS, you will support the development of advanced optoelectronic products used in optical communication test systems. The successful candidate will contribute to the design and analysis of high-speed analog optoelectronic hardware, working closely with senior technical leaders and cross-functional engineering teams. This role is ideal for an engineer with experience in optical communications, high-speed electronics, or photonic systems who wants to expand their expertise across optics, electronics, and system-level design. The role includes hands‑on design, simulation, characterization, debugging, and product development activities.

You Will Make an Impact By:

• Design, analyze, and test high-speed optoelectronics devices.
• Contribute to product development from concept through production release.
• Participate in design reviews and technical problem solving.
• Support manufacturing, sustaining engineering, and field investigations.
• Collaborate on designs of high-speed photodiodes (>100 GHz)
• Understand/specify all aspects related to the photodiode – epitaxial design, fabrication processes, its contribution to receiver performance, reliability, etc.
• Support RF and high-speed signal path development.
• Perform laboratory measurements, troubleshooting, and performance characterization in both optical and electrical domains.
• Work closely with optical and RF engineers to optimize system performance.
• Work closely with FABs on all aspects of photodiode manufacturing.
• Engage in product introduction activities and releasing documentation.
• Perform simulations for device/circuit analysis.
• Develop models to predict photodiode performance.
• Carry out signal integrity and performance analysis activities.
• Correlate simulation results with laboratory measurements.
• Travel Requirements: Up to 10% of Travel is required.

Skills You Bring:

• BS or MS in Electrical Engineering or Physics.
• 8+ years of experience in electronics or device development.
• Experience designing and debugging high-speed electronic circuits.
• Experience with photodiodes, TIAs, optical receivers, RF components and analysis, or related optoelectronic components or systems.
• Experience with device and circuit simulation tools: Device physics (carrier transport, absorption, bandwidth, dark current), Optical simulation (waveguide coupling, absorption, mode overlap), RF/electrical simulation, Layout and GDS generation.
• Strong hands‑on laboratory skills.
• Experience supporting products through development and release.

Preferred Skills:

• Experience developing devices and electronics for high-speed optical communications or datacenter networking products.
• Experience working with 100G, 200G, 400G, or higher-speed optical communication systems.
• Familiarity with optical transceivers and receiver architectures.
• Experience with RF and microwave circuit design.
• Experience with fabrication of III‑V devices.
• Experience using oscilloscopes, VNAs, BERTs, and optical test equipment.
• Familiarity with photonic integrated circuits (PICs) and advanced optoelectronic devices.

Physical Demands and Working Conditions:

• Physical Demands and Working Conditions: work in an office and laboratory environment, lift laboratory equipment up to 20 lbs.

We are interested in a qualified candidate who is eligible to work in the United States. However, we will not be sponsoring work visas for this position, at this time.

Compensation and Benefits:

Salary Pay Range: $101,675 to $169,475 per year. This range is a good faith estimate of the expected salary range for this position, based on a wide range of factors including qualifications, experience and training, operational and business needs and other considerations permitted by law. At MKS, it is not typical for an individual to be hired at or near the top of the range for the role.

Bonus: This position is eligible for a discretionary annual bonus, in an amount to be determined by MKS [or as applicable].

Benefits:

Benefits: MKS offers a comprehensive benefits package, including health insurance coverage (medical, dental and vision), 401(k) with company match, life and disability insurance, 12 paid holidays, sick time, 15 paid vacation days, [6 weeks fully paid] parental leave, adoption assistance and tuition reimbursement [and for participation in any stock programs, signing bonus, etc.].

• Health insurance coverage (medical, dental and vision)
• 401(k) with company match
• life and disability insurance
• 12 paid holidays
• sick time
• 15 paid vacation days
• [6 weeks fully paid] parental leave
• adoption assistance
• tuition reimbursement
• and for participation in any stock programs, signing bonus, etc.

MKS is an equal opportunity employer, including disability, veteran status and all categories protected by law. Please review our EOE statements for additional details.

MKS will consider qualified applicants with a criminal history pursuant to the California Fair Chance Act and the Los Angeles County Fair Chance Ordinance for Employers.