[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Western Digital jobs](https://jobs.opennash.com/companies/western-digital/) · [Search jobs](/search/) Western Digital · Fremont, CA # Senior Engineer, Applications Engineering (APC) Fremont, CA, United States Full-time Senior individual contributor Operations Listed on Western Digital’s official careers site. Posted September 17, 2026. Check that it is still open and apply there. [Apply on Western Digital’s careers site →](https://jobs.smartrecruiters.com/WesternDigital/744000150220789-senior-engineer-applications-engineering-apc-) [OpenNash Jobs](https://jobs.opennash.com/) / [Western Digital](https://jobs.opennash.com/companies/western-digital/) / Senior Engineer, Applications Engineering (APC) ## Job description The Senior Engineer,, Applications Engineering (APC) is responsible for developing, implementing, and sustaining Advanced Process Control (APC) systems—including run‑to‑run (R2R) control and fault detection & classification (FDC)—to improve manufacturing yield, process capability, cycle time, and equipment productivity. The role requires close collaboration with process, equipment, and IT engineering teams to deploy scalable APC solutions, advance automation initiatives, and drive continuous improvement across wafer manufacturing operations. As part of the industry’s transition from traditional feedback‑based APC to AI‑augmented, model‑driven control, the Senior Engineer will help integrate predictive and data‑driven methods that more accurately identify process drift, reduce variability, and minimize scrap. These next‑generation APC capabilities leverage machine learning, virtual metrology, and advanced equipment analytics to enhance system stability and responsiveness. The Senior Engineer plays a critical role in enabling these AI‑enhanced manufacturing capabilities while ensuring stable, high‑quality, and efficient wafer production. ### ESSENTIAL DUTIES & RESPONSIBILITIES Implement APC solutions in collaboration with Process Engineering, Equipment Engineering, IT, and external partners. Lead APC/automation projects through production release and quantify improvements against baseline metrics. Perform data analysis to develop and optimize FDC models for real‑time fault detection. Configure and deploy new control strategies and automation recipes; support recipe management and specification database setups. Develop and tune R2R control models using feedback and feed‑forward algorithms. Create advanced FDC models for scrap prevention, tool matching, predictive maintenance, and condition‑based maintenance. Conduct system integration testing for R2R, FDC, and automation host systems. Maintain R2R and FDC systems; monitor controller/model performance and initiate continuous improvement activities. Increasing use of predictive maintenance and health‑monitoring models leveraging FDC + ML to identify faults earlier and reduce unplanned downtime. Troubleshoot system issues and support system recovery during failures. Participate in roadmap planning for future APC and automation capabilities. Work effectively in a fast‑paced, cross‑functional environment and model continuous improvement behaviors. ## Qualifications REQUIRED-Must Have The Following BS/MS in Engineering (Computer, Electrical, Chemical, Industrial, Mechanical), Applied Physics, Operations Research, Data Science or Statistics. Experience with semiconductor R2R control and FDC systems. Strong analytical and programming skills; proficiency with statistical analysis and ML tools such as JMP, Python, and multivariate analysis platforms. Knowledge of semiconductor processing technologies and equipment. ### Solid understanding of IT systems, including Linux system administration and shell‑based workflow, Windows OS, SQL Server & SQL queries, Networking, SECS/GEM communications, and Data acquisition systems. ### SKILLS Experience applying large language models (LLMs) or AI‑assisted engineering workflows for data analysis, troubleshooting support, automation scripting, documentation generation, or accelerating APC/FDC model development. Effective verbal and written communication skills with project‑management experience. ## At a glance - Posted by the employer: Sep 17, 2026 - First seen by OpenNash: Oct 11, 2026 - Last checked: Oct 18, 2026 - Listed for: 31 days - Location: Fremont, CA, United States - Employment type: Full-time[Apply on Western Digital’s careers site →](https://jobs.smartrecruiters.com/WesternDigital/744000150220789-senior-engineer-applications-engineering-apc-) ## More jobs at Western Digital ### [Fall 2026 PhD Intern - Hardware Development Engineering](https://jobs.opennash.com/companies/western-digital/jobs/427efa4f2b34ab01f658/) Fremont, CA, United States ### [Probe Process Engineer](https://jobs.opennash.com/companies/western-digital/jobs/f83151ba7e892f172356/) Fremont, CA, United States ### [Senior Engineer, Wafer Quality Assurance](https://jobs.opennash.com/companies/western-digital/jobs/9afabb3c0b73371340b2/) Fremont, CA, United States ### [Senior Manager - Strategic Sourcing - MRO (Maintenance, Repair, Operations)](https://jobs.opennash.com/companies/western-digital/jobs/78e73aa02afa0bc099a9/) Fremont, CA, United States ### [Strategic Sourcing Commodity Manager - MRO](https://jobs.opennash.com/companies/western-digital/jobs/a98fdbe44db026b16a6f/) Fremont, CA, United States ## Similar jobs at other companies ### [Applications Engineering Manager - L5](https://jobs.opennash.com/companies/lockheed-martin/jobs/a974582bb55e7413db13/) Lockheed Martin · Fort Worth, TX ### [Applications Engineering Manager - Level 5](https://jobs.opennash.com/companies/lockheed-martin/jobs/14d5f54725911e2f12d2/) Lockheed Martin · Palmdale, CA ### [Senior Director, Digital Applications Engineering](https://jobs.opennash.com/companies/dollar-general/jobs/9c060f2fc1ab7dc1b98b/) Dollar General · TN, United States ### [Primary Care Provider APC | Atrius Health](https://jobs.opennash.com/companies/unitedhealth-group/jobs/32d8df9a278e7a072eeb/) UnitedHealth Group · Chelmsford, Massachusetts ### [Skilled Nursing Facility APC (NP/PA) | Reliant Medical Group](https://jobs.opennash.com/companies/unitedhealth-group/jobs/dcdc0a37bd86b7bc383c/) UnitedHealth Group · Worcester, Massachusetts OpenNash lists jobs from employers’ own careers sites and does not handle applications. Dates come from the employer where stated; “first seen” and “last checked” are our own observations. OpenNash Jobs · Official listings with dates and links to the employer. [Weekly hiring report](/reports/hiring/) · [Methodology](/methodology/)