Job Description
onsemi is seeking a Water Engineer - Central Utility Plant (CPU) for our Hopewell Junction, New York site. The Water Engineer is responsible for the technical ownership, reliability, optimization, and compliance of all water treatment and distribution systems supporting a 300mm semiconductor fabrication facility. This role ensures continuous delivery of ultrapure water (UPW), and associated utility systems required to maintain uninterrupted semiconductor manufacturing operations.
The Water Engineer partners with Facilities Operations, Process Engineering, Equipment Engineering, EHS, Quality, and external vendors to drive system reliability, reduce operating costs, improve sustainability, and support capacity expansion projects.
Responsibilities
RESPONSIBILITIES
Water System Ownership
- Own site water systems: UPW, RO, DIW, industrial, potable, and chemical delivery systems
Reliability & Operations
- Develop and execute reliability strategies
- Improve availability, capacity, quality, and cost
- Lead troubleshooting and support 24/7 operations
Water Quality Management
- Ensure compliance with semiconductor water specs
- Monitor key metrics: resistivity, TOC, silica, DO, particles, microbes
- Investigate excursions and implement corrective actions
Continuous Improvement
- Reduce water, chemical, energy use, and waste
- Lead sustainability and water reuse initiatives
- Perform root cause analysis (8D, RCA, FMEA, etc.)
Maintenance Strategy
- Define PM programs and optimize predictive maintenance
- Track MTBF, MTTR, availability, and cost
- Manage spare parts and critical inventory
Project Engineering
- Lead system upgrades and capacity expansions
- Manage scope, schedule, budget, and contractors
- Review designs, P&IDs, and construction packages
Compliance
- Ensure EPA, local, and wastewater permit compliance
- Support audits and maintain documentation
Data & Reporting
- Monitor systems via SCADA/facility systems
- Develop KPIs and dashboards
- Report performance to leadership
Key KPIs
- UPW availability ≥ 99.9%
- Zero water quality excursions and permit violations
- Improve the reuse rate, reduce consumption, and lower costs
- Improve MTBF, reduce MTTR
Qualifications
Required Qualifications
Education
- Bachelor’s Degree in: Chemical Engineering, Environmental Engineering, Mechanical Engineering, Civil Engineering, or Related Engineering Discipline
Experience
- 3+ years of experience in: Semiconductor Facilities in Water Treatment Systems, Industrial Utilities, Central Utility Plant Operations
Technical Knowledge
Strong knowledge of: UPW Systems, RO Membrane Systems, Ion Exchange Technologies, Chemical Treatment Processes, SCADA Systems, PLC Controls, Semiconductor Utility Requirements, Water Chemistry
Preferred Qualifications
- Experience supporting a 300mm semiconductor fab, Experience with advanced UPW systems in high-volume manufacturing, Professional Engineer (PE) license, Six Sigma Green Belt or Black Belt, Project Management experience, Knowledge of sustainability and water reclamation programs.
Salary: onsemi is excited to share the base salary range for this position is $75.300 to $120,400 exclusive of fringe benefits or potential bonuses. The final pay rate for the successful candidate will depend on geographic location, skills, education, experience, and/or consideration of the internal equity of our current team members. We also offer a competitive benefits package. https://www.onsemi.com/site/pdf/Benefits-Summary-USA.pdf
About Us
onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.
More details about our company benefits can be found here:
https://www.onsemi.com/careers/career-benefits
About The Team
We are committed to sourcing, attracting, and hiring high-performance innovators, while providing all candidates a positive recruitment experience that builds our brand as a great place to work.
onsemi is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, ethnicity, color, religion, ancestry, national origin, age, marital status, pregnancy, sex, sexual orientation, physical or mental disability, medical condition, genetic information, military or veteran status, gender identity, gender expression, or any other protected category under applicable federal, state, or local laws.
If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process, or are limited in the ability or unable to access or use this online application process and need an alternative method for applying, you may contact Talent.acquisition@onsemi.com for assistance.
