Job Description

Principal Responsibilities:

1. Failure Analysis & Root Cause Investigation

• Perform detailed failure analysis investigations on fiber laser units and subsystems, including:

• Optical components (fiber, collimators, isolators, lenses)

• Laser diodes and pump modules

• Power electronics and control boards

• Apply structured root cause analysis methodologies (e.g., 5 Why, Fishbone, Fault Tree Analysis, DMAIC).

• Conduct electrical, optical, mechanical, and thermal diagnostics to identify failure mechanisms.

• Validate failure hypotheses through experimentation, testing, and data analysis.

2. Reporting & Documentation

• Prepare clear, structured technical reports documenting:

• Failure symptoms

• Investigation methods

• Root causes

• Corrective and preventive actions (CAPA)

• Present investigation findings and recommendations to engineering, quality, production, and management teams.

• Maintain comprehensive failure databases and trend analysis dashboards.

3. Corrective Actions & Implementation

• Propose engineering solutions to resolve identified issues.

• Work with design, process, manufacturing, and supplier teams to implement corrective actions.

• Validate effectiveness of solutions through testing, verification, and reliability evaluation.

• Drive continuous product reliability improvement initiatives.

4. Failure Analysis Lab & Equipment Management

• Maintain the failure analysis station, ensuring:

• Equipment calibration and traceability

• Proper tooling availability

• Safe operation of optical and electrical systems

• Develop and improve test procedures, diagnostic tools, and fixtures.

• Ensure compliance with laser safety, electrical safety, and ESD standards.

5. RMA & Customer Support

• Provide technical support for RMA investigation and closure.

• Interface with customer service, sales, and field service teams to:

• Clarify failure symptoms

• Expedite root cause identification

• Provide technical feedback to customers when required

• Support urgent investigations for critical customer escalations.

Required Skills:

• Requires a Bachelor of Science in Engineering degree or equivalent experience and 5 years of related experience in Fiber Laser systems

• ​Min. 3 years of experience in Failure Analysis, Reliability engineering,

• Has experience with Laser systems or optoelectronics diagnostics

(Fresh graduates with strong laser or photonics research experience may be considered.)

• Strong understanding of fiber laser architecture and operation, pump diode lasers and drivers, beam delivery systems and fiber optics, optical isolation and beam shaping

• Experience in Optical alignment, beam profiling, power and spectral measurements.

• Knowledge on the use of fusion splicer, precision fiber cleaver, fiber strippers, oscilloscopes, power meters

• Good knowledge of root cause analysis methodologies and troubleshooting tools

• Competent in MS Excel (Data analysis, charts, pivot tables)

• Competent in Statistical tools (Minitab, JMP or Python preferred)

Physical Demands & Working Conditions:

• Must be able to communicate information and ideas so others will understand
• Must be able to exchange accurate information
• Operates in a professional office and cleanroom environment
• Constantly operates a computer and other office productivity machinery
• Ability to observe documents and details at close range (within a few feet of the observer)
• Dedication to safety to mitigate hazards including handling mechanical and electrical hardware, high voltage, gas, water, and heat
• Noise level in the work environment is low

#LI-DNI

Globally, our policy is to recruit individuals from wide and diverse backgrounds. However, certain positions require access to controlled goods and technologies subject to various export control regulations. Applicants for these positions may be limited (by, for example, their countries of citizenship, country of origin, or immigration status) where required by law or governmental contact, and/or employment made contingent upon the issuance of appropriate governmental licensing.

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

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