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Closed listing

MKS Instruments Inc

Sr. Optical Engineer

Milpitas, CA, United States

Compensation and Benefits:Salary Pay Range: $120,000 to 170,000 per year.

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: Compensation and Benefits:Salary Pay Range: $120,000 to 170,000 per year.
Experience: Bachelor of Science in Engineering degree and 5 years of industry experience or Master's degree and 2 years of industry experience.
Posting language: English
Posted: Nov 3, 2026

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Original job description

Archived listing. The details below describe a past opening.

Milpitas, CA

Full time

R23658

A Day in Your Life at MKS:As a Senior Optical Engineer at Spectra-Physics, Lasers Business Unit of MKS Inc, you will partner with Multi-disciplinary Internal Teams to contribute to the development of platform extensions and improvement of optical designs of free-space and fiber-based laser systems. In this role, you will report to the Senior Engineering Manager, R&D.You Will Make an Impact By:

Design and engineer laser modules and systems for performance, cost, and reliability to solve our customers most pressing challenges.
Define experimentation and modeling strategies, build, test and troubleshoot laser systems, create reports and design documentation, and transfer designs to production.
Interact with Electrical, Mechanical, Software and Manufacturing Engineers to drive design activities, performance and reliability evaluation, and systematic problem-solving.
Travel Requirements: Up to 10% of Travel may be required.Skills You Bring:
Bachelor of Science in Engineering degree and 5 years of industry experience or Master's degree and 2 years of industry experience.
Experience designing and building optical systems and free-space beam alignment of laser oscillators or amplifiers
Ability to set up and perform optical measurements, evaluate the results, and clearly communicate the conclusions

Preferred Skills:

Industrial optical product development
Troubleshooting and failure analysis of optical modules and systems
Hand on experience with ultra-fast lasers and techniques
Gaussian beam propagation and ray-tracing software
Harmonic generation and nonlinear crystals

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.

MKS will consider qualified applicants with a criminal history pursuant to the California Fair Chance Act for Employers.

Compensation and Benefits:Salary Pay Range: $120,000 to 170,000 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: MKS offers a comprehensive benefits package, including health insurance coverage (medical, dental and vision), 401(k) with company match, life and disability insurance, 11 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.].

Globally, our policy is to recruit individuals from wide and diverse backgrounds. However, certain positions require access to controlled goods and technologies subject to the International Traffic in Arms Regulations (ITAR) or Export Administration Regulations (EAR). Applicants for these positions may need to be “U.S. persons.” “U.S. persons” are generally defined as U.S. citizens, noncitizen nationals, lawful permanent residents (or, green card holders), individuals granted asylum, and individuals admitted as refugees.

MKS Inc. and its affiliates and subsidiaries (“MKS”) is an affirmative action and equal opportunity employer: diverse candidates are encouraged to apply. We win as a team and are committed to recruiting and hiring qualified applicants regardless of race, color, national origin, sex (including pregnancy and pregnancy-related conditions), religion, age, ancestry, physical or mental disability or handicap, marital status, membership in the uniformed services, veteran status, sexual orientation, gender identity or expression, genetic information, or any other category protected by applicable law. Hiring decisions are based on merit, qualifications and business needs. We conduct background checks and drug screens, in accordance with applicable law and company policies. MKS is generally only hiring candidates who reside in states where we are registered to do business.

MKS is committed to working with and providing reasonable accommodations to qualified individuals with disabilities. If you need a reasonable accommodation during the application or interview process due to a disability, please contact us at: accommodationsatMKS@mksinst.com .

If applying for a specific job, please include the requisition number (ex: RXXXX), the title and location of the role

At MKS, it's all about courage, big ideas, and a serious passion for innovation. Winning here is about exploring possibilities, taking action , and solving our customers’ toughest challenges. It's not just a job – it's what you make of it. While you shape your role and make it unique, we invest in you with on-the-job and formal training, as well as educational assistance. Curiosity is key at MKS - ask questions, own your path.

Our success comes from celebrating the unique skills, diverse perspectives, and lived experience of employees from over 100 countries. The goal is to make sure that everyone feels that they belong. Diversity isn't just a nice-to-have; making sure everyone feels included is a big deal for us.

Our group of ~10,000 employees serves semiconductor manufacturing, electronics and packaging, and specialty industrial markets. With over 3,800 patents, our products are enabling advancements in 5G, renewable energy & storage, artificial intelligence, cloud technology, and big data. We're the behind-the-scenes support for some amazing technology.

MKS Inc., enables technologies that transform our world. MKS Inc, Product Overview (https://www.mks.com/mam/celum/celum_assets/resources/MKSProductOverview-DS.pdf)

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