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Senior Process Engineer Jobs in O Fallon, MO (NOW HIRING)

Optimal Inc.

Manufacturing Process Engineer

Wentzville, MO · On-site

$70K - $94K/yr

Paint Process Engineer - run and maintain automotive paint equipment and robots to ensure safety, quality and throughput metrics are attained dailyBusiness Group:The manager is the Maintenance ...

Optimal Inc.

Manufacturing Process Engineer

Wentzville, MO · On-site

$70K - $94K/yr

Paint Process Engineer - run and maintain automotive paint equipment and robots to ensure safety, quality and throughput metrics are attained daily Business Group: The manager is the Maintenance ...

Optimal Inc.

Manufacturing Process Engineer

Wentzville, MO

$70K - $94K/yr

Paint Process Engineer - run and maintain automotive paint equipment and robots to ensure safety, quality and throughput metrics are attained daily Business Group: The manager is the Maintenance ...

eShocan

Manufacturing Process Engineer 4

Wentzville, MO · On-site

$70K - $94K/yr

The Paint Process Engineer is responsible for developing, implementing, maintaining, and continuously improving manufacturing processes, equipment, and automation systems within the Paint Department.

Clayco

Process Lead Engineer

Saint Louis, MO · On-site

$96K - $125K/yr

The Process Engineer works closely with clients, process architects, utilities engineers, mechanical engineers, and construction teams to translate manufacturing processes into clear, coordinated ...

Sky Mavis

Process Lead Engineer

Saint Louis, MO · On-site

$120 - $190/hr

The Process Engineer works closely with clients, process architects, utilities engineers, mechanical engineers, and construction teams to translate manufacturing processes into clear, coordinated ...

Clayco (LJC)

Process Lead Engineer

Saint Louis, MO · On-site

$96K - $125K/yr

The Process Engineer works closely with clients, process architects, utilities engineers, mechanical engineers, and construction teams to translate manufacturing processes into clear, coordinated ...

Clayco (LJC)

Process Lead Engineer

Saint Louis, MO

$96K - $125K/yr

The Process Engineer works closely with clients, process architects, utilities engineers, mechanical engineers, and construction teams to translate manufacturing processes into clear, coordinated ...

Clayco (LJC)

Process Lead Engineer

Saint Louis, MO

$96K - $125K/yr

The Process Engineer works closely with clients, process architects, utilities engineers, mechanical engineers, and construction teams to translate manufacturing processes into clear, coordinated ...

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Showing results 41-60

All JobsProcess Engineer JobsSenior Process Engineer JobsSenior Process Engineer Jobs in O'Fallon, MO

Senior Process Engineer information

See O Fallon, MO salary details

$70.2K

$113.3K

$159.5K

How much do senior process engineer jobs pay per year?

As of Sep 2, 2026, the average yearly pay for senior process engineer in O'Fallon, MO is $113,302.00, according to ZipRecruiter salary data. Most workers in this role earn between $97,300.00 and $125,800.00 per year, depending on experience, location, and employer.

What does a senior process engineer do?

A Senior Process Engineer is responsible for designing, optimizing, and overseeing processes within manufacturing or production environments. They analyze workflows, troubleshoot issues, and implement improvements to increase efficiency, safety, and product quality. Senior Process Engineers often lead projects, mentor junior engineers, and collaborate with cross-functional teams to ensure operational excellence. Their expertise is vital in industries like chemicals, pharmaceuticals, oil and gas, and food processing.

What are the key skills and qualifications needed to thrive as a senior process engineer?

To thrive as a Senior Process Engineer, you need a strong background in chemical or process engineering, problem-solving skills, and typically a bachelor's or master's degree in a relevant field. Expertise in process simulation software (such as Aspen Plus or HYSYS), Six Sigma or Lean certifications, and familiarity with process control systems are highly valued. Outstanding analytical abilities, leadership, and effective communication set top performers apart in this role. These skills and qualifications are crucial for optimizing processes, ensuring safety and compliance, and leading teams to achieve operational excellence.

What are some common challenges senior process engineers face when working on cross-functional teams?

Senior Process Engineers often collaborate with professionals from various departments, such as operations, quality, and maintenance. A common challenge is aligning diverse priorities and communication styles to achieve shared project goals. Successfully managing these differences requires strong interpersonal and project management skills, as well as the ability to translate technical concepts for non-engineering colleagues. Regular meetings and clear documentation can help ensure everyone stays informed and engaged throughout the process.

What is the difference between Senior Process Engineer vs Process Engineer?

AspectSenior Process EngineerProcess Engineer
QualificationsBachelor's or Master's in Engineering, often with 5+ years experienceBachelor's degree in Engineering or related field, typically 1-3 years experience
ResponsibilitiesLeading process improvements, mentoring, project managementSupporting process development, data analysis, assisting senior staff
Work EnvironmentDesign teams, manufacturing plants, R&D departmentsManufacturing facilities, engineering teams, operational support

Senior Process Engineers typically have more experience, leadership duties, and oversee complex projects, while Process Engineers focus on supporting process development and implementation. Both roles are essential in manufacturing and engineering industries, but the senior role involves greater responsibility and strategic planning.

How much does a senior process engineer earn?

A senior process engineer typically earns between $80,000 and $130,000 annually, depending on experience, industry, and location. They often have specialized skills in process optimization, project management, and may hold certifications like Six Sigma or PE licensure.

What are the most commonly searched types of Process Engineer jobs in O'Fallon, MO?

The most popular types of Process Engineer jobs in O'Fallon, MO are:

What are popular job titles related to Senior Process Engineer jobs in O'Fallon, MO?

For Senior Process Engineer jobs in O'Fallon, MO, the most frequently searched job titles are:

What cities near O'Fallon, MO are hiring for Senior Process Engineer jobs?

Cities near O'Fallon, MO with the most Senior Process Engineer job openings:

Senior Process Engineer jobs near you
Infographic showing various Senior Process Engineer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $113,302 per year, or $54.5 per hour.

Manufacturing Process Engineer

Kforce Technology Staffing

Wentzville, MO • On-site

$70K - $94K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 8 days ago

Job description

RESPONSIBILITIES:
Kforce has a client in Wentzville, MO that is seeking a Manufacturing Process Engineer to direct the development and/or improvements of manufacturing processes and equipment.
Job Responsibilities:
* Propose and evaluate manufacturing process and equipment for assigned areas
* Meet plant goals and standards in safety, quality, delivery, and cost
* Coordinate the effective use of personnel, materials, and equipment in supporting SPQRC initiatives
* Evaluate expenditures for processes and/or equipment
* Provide technical assistance and training for assigned plant operations
* Works closely with production and maintenance personnel and suppliers to ensure timely completion of projects
* Analyze tooling and equipment and select proper steps for solution
* Communicate with internal and external business units
* Support plants in achieving Safety, People, Quality, Responsiveness and Cost goals
* Support and implement the QS9000/ISO14001/(GMS) Global Manufacturing System compliance processes
REQUIREMENTS:
* Bachelor's degree in Engineering or related discipline
* 8-10 years of experience required
* Expert knowledge of manufacturing and assembly processes
* Basic knowledge of tooling processes
* Basic knowledge of automotive industry processes
* Knowledge in MS Word, Excel, and PowerPoint
* Knowledge with Lotus Notes or other email communication tool
* Ability to partner with senior management to analyze and solve issues
* Ability to handle multiple projects simultaneously
* Strong written and verbal communication skills
* Ability to work well with others, exhibiting teamwork skills
The pay range is the lowest to highest compensation we reasonably in good faith believe we would pay at posting for this role. We may ultimately pay more or less than this range. Employee pay is based on factors like relevant education, qualifications, certifications, experience, skills, seniority, location, performance, union contract and business needs. This range may be modified in the future.
We offer comprehensive benefits including medical/dental/vision insurance, HSA, FSA, 401(k), and life, disability & ADD insurance to eligible employees. Salaried personnel receive paid time off. Hourly employees are not eligible for paid time off unless required by law. Hourly employees on a Service Contract Act project are eligible for paid sick leave.
Note: Pay is not considered compensation until it is earned, vested and determinable. The amount and availability of any compensation remains in Kforce's sole discretion unless and until paid and may be modified in its discretion consistent with the law.
This job is not eligible for bonuses, incentives or commissions.
Kforce is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.
By clicking ?Apply Today? you agree to receive calls, AI-generated calls, text messages or emails from Kforce and its affiliates, and service providers. Note that if you choose to communicate with Kforce via text messaging the frequency may vary, and message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You will always have the right to cease communicating via text by using key words such as STOP.
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About Kforce

Sourced by ZipRecruiter

Kforce is a professional staffing services firm that is located in Tampa, Florida, US. Operational since 1962, it specializes in flexible and direct hire staffing in Technology and Finance & Accounting, engaging over 23,000 highly skilled professionals annually with more than 4,000 customers. Kforce operates within various industry sectors such as healthcare, financial services, communications, and government. Their mission is to have a meaningful impact on all the lives they serve, with a focus on integrity, respect, and trust.

Industry

It services and finance and insurance

Company size

1,001 - 5,000 Employees

Headquarters location

Tampa, FL, US

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