Job Description

onsemi is seeking a Gas Systems Engineer at our Hopewell Junction, NY site. This position is responsible for supporting the safe, reliable, and efficient operation of semiconductor facility gas systems. This entry-level role focuses on engineering, monitoring, maintenance support, and continuous improvement of bulk and specialty gas distribution systems for wafer fabrication processes.

This position is a standard Monday - Friday role, with expectations to provide on-call support and occasional off-hours coverage for critical system needs, planned work, or facility emergencies.

• Evaluate system performance and identify opportunities for efficiency improvements, reliability enhancements, and capacity expansion
• Develop and implement engineering solutions, including system upgrades and process modifications
• Drive cost reduction and energy efficiency initiatives
• Participate in troubleshooting complex, mechanical, and process-related system issues in bulk and specialty gas systems
• Perform root cause analysis and implement corrective and preventive actions
• Support capital projects, including new installations, retrofits, and system upgrades
• Develop and review technical documentation such as P&IDs, specifications, and procedures
• Develop and optimize preventive and predictive maintenance programs
• Ensure all gas system operations comply with safety standards, codes, and internal procedures
• Work closely with manufacturing, facilities, and EHS teams to support fab operations
• Coordinate with external vendors and contractors for system maintenance and upgrades
• Provide engineering support for new tool installations and gas tie-ins

• Bachelor’s degree in Chemical Engineering, Mechanical Engineering, Electrical Engineering, or a related field
• 0–5 years of experience (internship or co-op experience in semiconductor, chemical, or industrial systems preferred)
• Basic understanding of fluid systems, piping, and industrial process equipment
• Strong analytical and problem-solving skills
• Ability to work in a fast-paced, high-reliability manufacturing environment
• Proficiency with Microsoft Office tools

Salary: onsemi is excited to share the base salary range for this position is $65,800 to $102,100 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