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Plant Process Engineer III

Sonoco · Milwaukee, WI · $92,800–$104,400 a year · Full time

Posted Sep 11, 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 a capital improvement project you helped plan and execute. What was your role?

What they are checking: Whether they can handle project planning, contractors and budgets from start to finish.

Tell me about a time you worked across operations, maintenance, quality and safety to solve a problem.

What they are checking: Whether they can lead without authority across departments with different priorities.

Tell me about a time you found a compliance gap. What did you do?

What they are checking: Whether they act quickly and transparently on compliance issues rather than hoping no one notices.

What safety programs have you supported, and what was your part?

What they are checking: Whether they can support plant safety programs as part of their engineering role.

What would you do

How would you build a sustainability initiative that also saves the plant money?

What they are checking: Whether they can tie sustainability to cost and operations so leadership supports it.

How do you manage contractors working in the plant so the job is safe and done right?

What they are checking: Whether they control contractor safety, scope and quality instead of handing off and walking away.

An inspector from the state shows up for an unannounced visit. How do you handle it?

What they are checking: Whether they stay organized and honest and know where the plant's records are.

About the work

This role leads the plant's environmental compliance. Tell me about the permits and reporting you have managed, like air or stormwater.

What they are checking: Whether they have real environmental compliance experience, which is the core of this role.

What experience do you have with plant utilities like compressed air, steam or water systems?

What they are checking: Whether they can support infrastructure that affects both cost and reliability across the plant.

How do you decide which equipment reliability problems to tackle first?

What they are checking: Whether they use data on downtime and cost to prioritize instead of reacting to the loudest complaint.

How do you keep track of all your compliance deadlines and reports?

What they are checking: Whether they have a reliable system, since missed environmental deadlines lead to fines.

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The full job description

As published by Sonoco.

From a small family business to a multi-billion-dollar global company, Sonoco has been changing the face of products and packaging since 1899 — all while keeping the heart of “People Build Businesses” alive. Our talented people are at the core of our growth, constantly reinventing the Sonoco wheel with brilliant solutions every year. Today we are a world leader in global packaging solutions with diversified operations in over 34 countries. We're extremely proud of our portfolio of brands, our achievements in sustainability and industrialization and the groundbreaking work accomplished by our people. The Plant Process Engineer III is responsible for leading the plant's environmental compliance and sustainability initiatives while supporting the safe, reliable, and efficient operation of manufacturing processes and plant infrastructure. This position provides engineering support for manufacturing equipment, facilities, utilities, and safety programs, while assisting with the planning, coordination, and execution of capital improvement projects. Working collaboratively with Operations, Maintenance, Quality, and Safety teams, the Process Engineer III develops and implements solutions that improve equipment reliability, process performance, regulatory compliance, and operational efficiency. The role also coordinates contractors, supports continuous improvement initiatives, and provides technical support to ensure uninterrupted plant operations. What you will be doing: • Lead and manage plant environmental compliance by monitoring key performance metrics, maintaining required documentation, and assisting with regulatory reporting and audits. • Support capital improvement projects, including project planning, budgeting, implementation, tracking, and completion. • Administer and support plant safety programs to ensure compliance with company policies and regulatory requirements. • Provide engineering oversight for plant utility systems, facility infrastructure, and production support equipment to maximize reliability and operational efficiency. • Coordinate preventative and predictive maintenance programs for assigned equipment and systems. • Manage and oversee maintenance activities for plant facilities, including building infrastructure and critical support systems. • Coordinate equipment inspections, repairs, and maintenance activities with internal maintenance personnel and external contractors. • Provide engineering support for manufacturing equipment by identifying opportunities to improve reliability, efficiency, safety, and equipment performance. • Maintain 24/7 on-call availability to provide engineering support for critical manufacturing operations. Respond to after-hours equipment failures, process issues, and facility emergencies to minimize downtime and ensure the safe, reliable operation of the plant. • Lead root cause investigations and implement corrective actions to reduce equipment downtime and improve process reliability. • Develop and maintain equipment standards, maintenance procedures, and engineering documentation. • Monitor equipment and process performance using data analysis and key performance indicators (KPIs) to drive continuous improvement initiatives. • Collaborate with Operations, Maintenance, Quality, Safety, and Engineering teams to support production goals and improve overall plant performance. • Ensure assigned projects and equipment comply with company standards, environmental regulations, and applicable safety requirements. • Manage contractor relationships and ensure work is completed safely, on schedule, and within budget. • Participate in continuous improvement initiatives focused on increasing productivity, reducing costs, improving reliability, and enhancing operational performance. • Perform other duties and special projects as assigned. This position will be located at our Milwaukee, WI facility. We'd love to hear from you if: • B.S. in Engineering (or A.S in Engineering with equivalent experience) • 3-5 years experience in a leadership role within a manufacturing environment. • Strong background in mechanical systems, electronics/automation, and chemical processes. • Advanced computer skills in Word, Excel, CAD, and other project management software. • Comprehensive knowledge of OSHA safety requirements, with a strong emphasis on mechanical safety practices, machine guarding, energy isolation, lockout/tagout (LOTO), confined space entry, fall protection, and safe work procedures. • Knowledge of regulatory compliance, food safety standards, and environmental controls. • Excellent problem-solving abilities and attention to detail. • Knowledge of manufacturing processes, equipment, and quality control standards. • Ability to work under pressure and meet tight deadlines. • Strong communication and interpersonal skills. Compensation: The annual base salary range for this role is as follows: Engineer II, Plant Process is from $92,800 to $104,400, plus a quarterly target bonus of 12.5% of base salary. Engineer III, Plant Process is from $104,800 to $117,900, plus a quarterly target bonus of 12.5% of base salary. An annual incentive is awarded to eligible employees upon attaining various business and individual goals as defined by the Company and the department leader. This annual incentive is discretionary, and the Company has sole discretion to determine the amount of the award. #LI-RM1 At Sonoco Products Company, we offer a comprehensive total rewards package, including competitive pay and benefits. *Benefits listed below are for employees located in the U.S. Specific benefits and wellbeing programs may vary depending on your location (within the U.S. or global), or if you are a union employee. Benefits • Medical, dental, and vision coverage for you and your dependents, including FSA and HSA options • 401(k) retirement plan with company match • Wellbeing tools and resources to support holistic health, including an Employee Assistance Program with a variety of services • Paid time off and holidays to recreate, rejuvenate and care for the health of yourself and family • Variety of company paid and voluntary employee-paid insurance plans including life, personal accident, and disability insurance • Tuition reimbursement We are an equal opportunity employer, and we strictly prohibit and do not tolerate discrimination against employees, applicants or any other covered persons because of race, color, religion, national origin or ancestry, sex, pregnancy, sexual orientation, marital status, gender identity or expression, age, disability, genetic information, veteran status, or any legally protected characteristic.

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