Engineer III

 Join UCT and be part of the fastest-growing sector in the world! We indirectly touch every semiconductor chip that goes into every smartphone, smart car, and device that uses artificial intelligence. This is a critical time for the semiconductor industry and for UCT - as technology evolves, we evolve with it. UCT is a diverse workplace where every talented employee is committed to continuous innovation, challenging the status quo and exceeding customer expectations. If you are a person with a relentless drive to succeed, a strong focus on quality with a passion for success – join us today!  

UCT is looking for a talented Engineer III to join us in Hayward, CA!

The Manufacturing Engineer III leads the development of manufacturing documentation, process workflows, and system builds to support high-technology production environments. This role ensures product quality, operational efficiency, and compliance by coordinating cross-functional efforts, conducting technical reviews, and driving continuous improvement. The engineer interfaces with customers and vendors, manages engineering changes, and supports cost estimation and capital planning to deliver reliable, scalable manufacturing solutions.

Essential Duties and Responsibilities:

• Create and revise manufacturing documentation including Sequence of Events (SOEs) and assembly process workflows using engineering prints and bills of materials.


• Provide technical direction and hands-on training to production staff.


• Plan, schedule, and coordinate engineering support for system builds.


• Prepare and update work instructions, BOM structures, and training materials.


• Facilitate interdisciplinary communication and coordination across project teams.


• Participate in customer and vendor meetings to support technical discussions and project alignment.


• Collaborate with engineering, manufacturing, and quality teams to ensure systems meet design, safety, and operational standards.


• Investigate and resolve internal and customer-reported issues, recommending corrective actions.


• Support cost estimation and capital project planning for new equipment and major repairs.


• Evaluate and process Engineering Change Orders (ECOs).


• Ensure projects are completed on time and within budget.


• Perform system inspections and partner with quality teams to ensure compliance with specifications and standards.


• Maintain regular attendance and perform other duties as assigned.

Other Duties

• Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Knowledge, Skills, and Abilities:

• Proficiency in lean manufacturing principles; Six Sigma Greenbelt preferred.


• Familiarity with semiconductor capital equipment and engineer-to-order environments.


• Experience with electronic work instruction software (e.g., Sequence).


• Working knowledge of ERP systems and manufacturing documentation tools.


• Strong computer skills, especially in Microsoft Excel and other MS Office applications.


• Proven ability to lead small teams and drive project success.


• Effective interpersonal skills with the ability to work independently and collaboratively.


• Professional demeanor with a positive attitude and strong communication skills.


• Demonstrated experience in high-technology manufacturing environments.

Educational/Certification Requirement:

• Bachelor of Science/ Bachelor of Arts degree in Engineering, Physical Sciences, Manufacturing, or related field preferred with 2 years of experience in related manufacturing/ production position; or


• Associate of Arts (AA) in a technical field with more than 5 years of manufacturing experience.

Work Experience:

• 5+ years related experience in high-technology manufacturing, preferably in semiconductor capital equipment or related industry.

Work Environment:

• Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions


• Work is performed primarily in a manufacturing, office, warehouse, and/or cleanroom environment

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• Ability to climb, stoop, kneel, crouch, reach, walk, push, pull, and grasp.


• Ability to lift up to 25 lbs. 


• Ability to lift over 25 lbs. with assistance.


• Ability to move arms, hands, and fingers.


• Ability to sit or stand for sustained periods.


• Required to have visual acuity to perform assigned tasks.


• Ability to sit for sustained periods.

 Environmental Exposure:

• Subject to hazards including electrical current, moving mechanical parts, and exposure to chemicals


• Required to wear personal protective equipment where applicable.


• May involve exposure to moderate noise levels from printers, faxes, computers, etc.


• The ability to talk on the phone and use a computer for extended periods may be required.


• May involve exposure to moderate noise levels from printers, faxes, computers, etc.

Overnight Travel:

• Work may require out-of-town travel depending upon assignment (training and meeting). 

Ultra Clean Technology is proud to be an equal-opportunity employer. We are committed to equal employment opportunity regardless of race, color, national or ethnic origin, age, religion, disability, sexual orientation, gender, gender identity and expression, marital status, and any other characteristic protected under laws and regulations.

The pay range for this position at commencement of employment is expected to be between $89,900.00 and $143,900.00/ year; however, base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. The total compensation package for this position may also include other elements, including variable pay and discretionary awards in addition to a full range of medical, financial, and/or other benefits (including 401(k) eligibility and various paid time off benefits, such as PTO (Paid Time Off) and parental leave), dependent on the position offered. Details of participation in these additional compensation and benefit plans will be provided if an employee receives an offer of employment.  

If hired, employee will be in an “at-will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.