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Senior Principal Controls Engineer

Baxter · Round Lake, IL · $128,000–$176,000 a year · Full time

Posted Jul 17, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about an Industry 4.0 or data connectivity project you delivered on a production floor.

What they are checking: Whether they have real experience connecting equipment data to improve performance.

Describe how you've worked with Operational Excellence and Quality to improve equipment performance.

What they are checking: Whether they can collaborate across teams named in the posting.

Tell me about a time you mentored other controls engineers or technicians.

What they are checking: Whether a senior principal can raise the skill level across the site.

What would you do

Operations wants a quick logic change during a shift to keep a line running. What do you do?

What they are checking: Whether they protect change control while helping production solve the problem.

A legacy control system is no longer supported. How would you plan a migration?

What they are checking: Whether they can reduce risk and downtime in a controls upgrade.

About the work

Walk me through how you would troubleshoot a recurring stoppage on an automated line.

What they are checking: Whether they use data and control logic to find the real cause of downtime.

How do you design PLC programs so they are easy for plant technicians to support?

What they are checking: Whether they write controls code with maintainability and standards in mind.

How do you handle computer system validation for control system changes in a regulated plant?

What they are checking: Whether they understand that controls changes must meet FDA and quality requirements.

How do you specify and accept new automated equipment from a vendor?

What they are checking: Whether they know FAT, SAT and documentation needed for reliable equipment delivery.

How do you measure equipment effectiveness and decide where to improve first?

What they are checking: Whether they use OEE and loss data to target the biggest gains.

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The full job description

As published by Baxter.

This is where your work makes a difference. At Baxter, we believe every person—regardless of who they are or where they are from—deserves a chance to live a healthy life. It was our founding belief in 1931 and continues to be our guiding principle. We are redefining healthcare delivery to make a greater impact today, tomorrow, and beyond. Our Baxter colleagues are united by our Mission to Save and Sustain Lives. Together, our community is driven by a culture of courage, trust, and collaboration. Every individual is empowered to take ownership and make a meaningful impact. We strive for efficient and effective operations, and we hold each other accountable for delivering exceptional results. Here, you will find more than just a job—you will find purpose and pride. Your role at Baxter This is where your expertise helps people In this role, you will support process and automation improvements within a manufacturing site. You will collaborate with Manufacturing, Operational Excellence, and Quality to drive improved performance of production equipment. You will be responsible for delivering equipment that supports process reliability, Industry 4.0 initiatives, and plant-wide efficiency, while ensuring process design and operation consistently meet Engineering and Quality standards. What you'll be doing • Support daily operations by identifying control system improvements, addressing obsolescence risks, and enhancing equipment reliability. • Develop and implement improvement strategies that align with site priorities and long term business goals. • Troubleshoot and optimize automated equipment at the machine and system level to improve throughput, uptime, and repeatability. • Advance the site’s digital transformation through automation, data integration, and Industry 4.0 initiatives. • Partner with manufacturing, quality, and compliance teams to ensure adherence to regulatory requirements. • Author, execute, and report on validation activities, including test protocols. • Lead NCR/CAPA investigations and implement corrective and preventive actions. • Own change control activities related to equipment and process modifications. • Serve as a subject matter expert for equipment troubleshooting and process performance issues. • Provide leadership, technical direction, and innovation on complex engineering initiatives that advance plant capability. • Direct oversight of employees. What you'll bring • Bachelor’s degree in Engineering (Electrical, Mechanical, Chemical, or related discipline preferred). • 8+ years of relevant engineering experience in a manufacturing environment. • Ability to work in a Penicillin/Cephalosporin facility. • Onsite, full‑time role with less than 10% travel. • Strong understanding of regulatory compliance, safety standards, and validation practices. • Experience with automation platforms, including Allen‑Bradley ControlLogix PLCs and Safety PLCs. • Proficiency with Allen‑Bradley HMIs, Fanuc/Staubli robotics, Cognex/Keyence vision systems, and Rockwell/Yaskawa servo systems. • Familiarity with motion control, VFDs, encoders, hydraulics, and pneumatics. • Hands‑on mechanical proficiency; experience with Serialization and SCADA systems is a plus. • Demonstrated capability in developing and performing validation protocols. • Experience with Industry 4.0 technologies, including AI‑based vision and robotics. • Exposure to Six Sigma, DFSS, and Voice of Customer methodologies. We understand compensation is an important factor as you consider the next step in your career. At Baxter, we are committed to equitable pay for all employees, and we strive to be more transparent with our pay practices. The estimated base salary for this position is $128,000 - $176,000 annually. The estimated range is meant to reflect an anticipated salary range for the position. We may pay more or less than of the anticipated range based upon market data and other factors, all of which are subject to change. Individual pay is based on upon location, skills and expertise, experience, and other relevant factors. This position may also be eligible for discretionary bonuses. For questions about this, our pay philosophy, and available benefits, please speak to the recruiter if you decide to apply and are selected for an interview. Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time. US Benefits at Baxter (except for Puerto Rico) This is where your well-being matters. Baxter offers comprehensive compensation and benefits packages for eligible roles. Our health and well-being benefits include medical and dental coverage that start on day one, as well as insurance coverage for basic life, accident, short-term and long-term disability, and business travel accident insurance. Financial and retirement benefits include the Employee Stock Purchase Plan (ESPP), with the ability to purchase company stock at a discount, and the 401(k) Retirement Savings Plan (RSP), with options for employee contributions and company matching. We also offer Flexible Spending Accounts, educational assistance programs, and time-off benefits such as paid holidays, paid time off ranging from 20 to 35 days based on length of service, family and medical leaves of absence, and paid parental leave. Additional benefits include commuting benefits, the Employee Discount Program, the Employee Assistance Program (EAP), and childcare benefits. Join us and enjoy the competitive compensation and benefits we offer to our employees. For additional information regarding Baxter US Benefits, please speak with your recruiter or visit our Benefits site: Benefits | Baxter Equal Employment Opportunity Baxter is an equal opportunity employer. Baxter evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic. Know Your Rights: Workplace Discrimination is Illegal Reasonable Accommodations Baxter is committed to working with and providing reasonable accommodations to individuals with disabilities globally. If, because of a medical condition or disability, you need a reasonable accommodation for any part of the application or interview process, please click on the link here and let us know the nature of your request along with your contact information. Recruitment Fraud Notice Baxter has discovered incidents of employment scams, where fraudulent parties pose as Baxter employees, recruiters, or other agents, and engage with online job seekers in an attempt to steal personal and/or financial information. To learn how you can protect yourself, review our Recruitment Fraud Notice .

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