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Salary
$66k – $102k per year
Location
In office (Hopewell Junction)

Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Jul 9, 2026. onsemi scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Onsemi is an American semiconductor company that was spun out of Motorola in 1999 and has since narrowed itself from a broad commodity chip supplier into a focused power and sensing business. Its silicon carbide and silicon power devices go into electric vehicle traction inverters, chargers and industrial drives, while its image sensors are used in automotive cameras and industrial vision, and it has deliberately exited lower-margin product lines to concentrate on these markets. Headquartered in Scottsdale, Arizona and listed on Nasdaq, it owns its own silicon carbide substrate manufacturing to secure supply.

onsemi is seeking a Diffusion Engineer. You will develop and support the manufacturing of 300mm silicon wafers used for Automotive and Consumer applications throughout the world. You will also provide process engineering support for additional process areas. In this team-based environment, you will work closely with integration, process and equipment teams to provide robust, quality products to our customers.

  • Own critical Furnace processes and associated health of ASM/TEL/Bruce equipment in a fast-paced, 24/7 manufacturing environment.
  • Apply technical skills to implement equipment and process improvements that increase product performance, reduce cost, and increase throughput and yield.
  • Design and document experiments utilizing engineering methodology to improve yield, cost, and throughput.
  • Resolve complex, time-sensitive technical problems to maintain production or development schedules.
  • As a Furnace Engineer, you will be expected to make decisions using data analysis and statistical process control (SPC) techniques.
  • Provide daily process and product lot disposition support in the furnace processing area.
  • Contribute to the understanding and resolution of all equipment-level shifts in tool performance
  • Within the first six to twelve months, develop advanced sustaining responsibilities and contribute to cost reduction, yield improvement, and production throughput increas
  • Education: BS degree in Engineering or a technical field. An MS degree is a plus
  • Experience: 0 to 2 years of relevant experienceyears in semiconductor processing or a similar industry
  • Knowledge of furnace process with a focus on ASM, TEL, and/or Bruce equipment
  • Experience working in cross-functional teams to achieve goals and metrics
  • Experience with FMEA risk analysis is a plus
  • Intermediate-level data analysis skills, specifically in Excel or JMP, using formulas, pivots, and charts, are required
  • Proficiency in Microsoft Office, particularly PowerPoint
  • Strong communication skills with experience in presenting technical project details
  • Self-motivated and results-oriented
  • Fluency (written and oral) in English is required

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

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