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Salary
$32k – $54k per year
Location
In office (Irvine)
Seniority
Junior · 2+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 15, 2026. First seen by Alion on Oct 14, 2026. MKS scores B on the Alion truth index.

Overview
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MKS

MKS Instruments is an American company founded in 1961 that makes the instruments, subsystems and process control equipment inside semiconductor manufacturing tools, which means it sells mainly to the equipment makers rather than to chip fabs directly. Its portfolio covers vacuum and pressure measurement, gas and liquid delivery, power supplies, lasers and photonics, and, since the Atotech acquisition, the chemistry used in advanced packaging and printed circuit board plating. Headquartered in Andover, Massachusetts and listed on Nasdaq, it carries substantial debt from that acquisition and is exposed to the semiconductor equipment cycle at one remove.

A Day in Your Life at MKS:

As an Optical Coater at MKS, you will partner with the engineering and cleaning team to perform coating operations on parts, materials, and components, while documenting results. In this role, you will report to the Operations and Manufacturing Manager.

You Will Make an Impact By:

  • Performing coating operations of incoming parts, materials, components, and document results.
  • Coordinating the collection and disposition of coated material.
  • Determining or assisting in determining methods, sequences, and procedures necessary for coating/inspection.
  • Working from written procedures, drawings, sketches, and specifications.
  • Performing inspection/spectroscopy measurements where necessary.

Skills You Bring:

  • Completion of high school diploma, vocational training, or equivalent is preferred
  • Two or more years of related experience.
  • Experience using inspection tools and devices such as calipers, micrometers, microscope, height gauges, UV/VIS, Ellipsometer, Scratch dig standards, etc.
  • Experience performing per-coat/post coat inspection, cleaning, handling, and packaging optics
  • Knowledge of coating and vacuum systems, thin film deposition tools

Physical Demands and Working Conditions:

  • Perform activities such as sitting, standing, or typing for extended periods of time
  • Occasionally moves/positions objects up to 35 lbs.
  • Regularly requires manual dexterity and coordination of objects below, at, and above shoulder level.

Compensation and Benefits:

Hourly Pay Range: $16.70 - 27.83USD Hourly. 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, 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.].

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.

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: [email protected].

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

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