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Senior Process Engineer Jobs in St Louis, MO (NOW HIRING)

Amrize

Senior Process Engineer, Cement Plant

Festus, MO · On-site

$88K - $114K/yr

Senior Process Engineer CEM | Req ID: 16705 | Location: Ste. Genevieve Cement MO ABOUT THE ROLE The Senior Process Engineer leads plant discussions and investigations to improve throughput ...

Spartech

Senior Process Engineer (REQ865)

Saint Louis, MO · Remote

$106K - $137K/yr

Senior Process Engineer Maryland Heights, MO Spartech offers a competitive salary, incentives, and benefit programs! Spartech, LLC, headquartered in Maryland Heights, Missouri, has over a dozen ...

Spartech

Senior Process Engineer (REQ865)

Saint Louis, MO

$98K - $127K/yr

Senior Process Engineer Maryland Heights, MO Spartech offers a competitive salary, incentives, and benefit programs! Spartech, LLC, headquartered in Maryland Heights, Missouri, has over a dozen ...

CRB

Senior Process Engineer - Liquid Systems

Saint Louis, MO · On-site

$101K - $130K/yr

We are seeking a Senior Process Engineer with deep expertise in liquid processing systems within the food and beverage industry . This role will lead the design and execution of process systems for ...

CRB

Senior Process Engineer - Liquid Systems

Saint Louis, MO · On-site

$101K - $130K/yr

We are seeking a Senior Process Engineer with deep expertise in liquid processing systems within the food and beverage industry . This role will lead the design and execution of process systems for ...

Actalent

Process Engineer

Saint Louis, MO

Process Engineer The Process Engineer plays a key technical role in the development, transfer, scale-up, validation, and continuous improvement of biologics manufacturing processes within a GMP ...

New

Pretium Packaging

Process engineer

Saint Louis, MO

$42.31 - $49.52/hr

The Process Engineer assists plant leadership and works collaboratively with all other departments to maintain the flow of work in the process molding lines, ensuring customer products are being ...

Elementis PLC

Process Engineer

Saint Louis, MO · On-site

$70 - $90/hr

The Process Engineer serves as a vital resource for Operations by applying technical skills to safely execute the supply plan. The Process Engineer enables the safe and reliable production at a low ...

New

Clayco (LJC)

Senior Process Designer

Saint Louis, MO · On-site

$95K - $102K/yr

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... Senior Process Designers play a pivotal role in ensuring project success through technical ...

Clayco (LJC)

Senior Process Designer

Saint Louis, MO · On-site

$95K - $102K/yr

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... Senior Process Designers play a pivotal role in ensuring project success through technical ...

Pretium Packaging

Process Engineer

Saint Louis, MO

$90K - $130K/hr

The Process Engineer assists plant leadership and works collaboratively with all other departments to maintain the flow of work in the process molding lines, ensuring customer products are being ...

Clayco (LJC)

Senior Process Designer

Saint Louis, MO · On-site

$95K - $102K/yr

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... Senior Process Designers play a pivotal role in ensuring project success through technical ...

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All JobsProcess Engineer JobsSenior Process Engineer JobsSenior Process Engineer Jobs in St. Louis, MO

Senior Process Engineer information

See St Louis, MO salary details

$72.9K

$117.8K

$165.8K

How much do senior process engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for senior process engineer in St. Louis, MO is $117,752.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,100.00 and $130,800.00 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 St. Louis, MO?

The most popular types of Process Engineer jobs in St. Louis, MO are:

What are popular job titles related to Senior Process Engineer jobs in St. Louis, MO?

For Senior Process Engineer jobs in St. Louis, MO, the most frequently searched job titles are:

What job categories do people searching Senior Process Engineer jobs in St. Louis, MO look for?

The top searched job categories for Senior Process Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Senior Process Engineer jobs?

Cities near St. Louis, MO with the most Senior Process Engineer job openings:

Senior Process Engineer jobs near you
Infographic showing various Senior Process Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 17% Part Time, 1% Temporary, 4% Contract, and 1% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $117,752 per year, or $56.6 per hour.

Senior Process Engineer, Cement Plant

Amrize

Crystal City, MO • On-site

$88K - $114K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Amrize rating

8.1

Company rating: 8.1 out of 10

Based on 38 frontline employees who took The Breakroom Quiz

116th of 545 rated manufacturers

Job description

We're seeking a Senior Process Engineer CEM who's ready to put your skills to work on projects that matter - and build a career with a company that's building North America.
Job Title: Senior Process Engineer CEM | Req ID: 16705 | Location: Ste. Genevieve Cement MO
ABOUT THE ROLE
The Senior Process Engineer leads plant discussions and investigations to improve throughput, efficiency, quality, and environmental performance. Through data analysis, field measurements, and conversations with employees are able to diagnose issues and develop solutions. As an influencer able to move the plant towards greater performance.
Relocation assistance provided for candidates outside this area.
WHAT YOU'LL ACCOMPLISH
  • The Senior Process Engineer provides technical support to the plant's production, quality, and environmental functions. Understands strategies, priorities, and optimization techniques that assist the plant in attainment of plant and company objectives. Evaluates operations, processes, and trends through the use of audits and systematic approaches (Six Sigma, RCFA, SPC, etc).
  • Provides technical support on implementation of new equipment and/or new procedures including training of plant personnel as required. Serves as coach / mentor to CP's in process and other departments.
  • Primary to the Senior Process Engineer position is the coordination and participation in improvement of the Plant's technical capabilities. The Senior Process Engineer's objectives are to initiate process optimization in collaboration with Quality, Production and Maintenance to ensure maximum and efficient utilization of the plant's equipment. This position has a requirement of elevating the technical knowledge and practices of all facets of the operation.
  • The Senior Process Engineer is seen as a developmental position to provide a full spectrum exposure to cement plant operations. Successful incumbents may be considered for advancement opportunities into supervisory or managerial positions.
  • Ensure compliance with internal control procedures - communicating problems in operations, unwarranted deviations from established standards, and violations of policy or law.
  • Demonstrate a commitment to communicating, improving and adhering to health, safety and environmental policies in all work environments and areas. Promote a culture of safety and exhibit these behaviors.

WHAT WE'RE LOOKING FOR
  • Education: Bachelor's degree
  • Field of Study Preferred: Chemical Engineering, Automation Engineering, similar disciplines
  • Required Training/Certifications: Minimum 5 years of cement plant experience
  • Required Technical Skills: Strong computer expertise in but not limited to: Excel, Access, IP21,SAP, and SPC.

Travel Requirements: Minimal
Additional Requirements:
  • Promotes safety.
  • Excellent verbal and written communication skills.
  • Successful candidates must adhere to all safety protocols and proper use of Amrize approved Personal Protection Equipment ("PPE"), including but not limited to respirators. Employees that are required to wear respirators must be clean shaven where the respirator seal meets the face in order to pass the qualitative and quantitative fit tests.

WHAT WE OFFER
** This role is eligible for a $10,000 sign on bonus!!**
  • Competitive salary
  • Retirement Savings: Choose from 401(k) pre-tax and/or Roth after-tax savings
  • Employee Stock Purchase Plan
  • Medical, Dental, Disability and Life Insurance
  • Holistic Health & Well-being programs
  • Health Savings Accounts (HSAs) & Flexible Spending Accounts (FSAs) for health and dependent care
  • Vision and other Voluntary benefits and discounts
  • Paid time off & paid holidays
  • Paid Parental Leave (maternity & paternity)
  • Educational Assistance Program
  • Dress for your day

#LI-SZ1
Amrize is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
We thank all applicants for their interest; however, only those selected for an interview will be contacted.
BUILDING INCLUSIVE WORKSPACES
At Amrize, there is endless opportunity for you to play your part. Whether you're in a technical, managerial, or frontline role, you can shape a career that works for you. We're seeking builders, creative thinkers and innovators. Come put your expertise to work while developing the knowledge and skills to drive your career forward. With us you'll have the chance to build your ambition!
Amrize North America Inc. takes pride in our hiring processes and our commitment that all qualified applicants will receive consideration for employment without regard to age, race, color, ethnicity, religion, creed, national origin, ancestry, gender, gender identity, gender expression, sex, sexual orientation, marital status, pregnancy, parental status, genetic information, citizenship, physical or mental disability, past, current, or prospective service in the uniformed services, or any other characteristic protected by applicable federal, state or local law. Amrize North America Inc, and its respective subsidiaries are Equal Opportunity Employers, deciding all employment on the basis of qualification, merit and business need. Amrize Canada Inc. is committed to the principles of employment equity and encourages the applications from women, visible minorities, and persons with disabilities. Amrize North America Inc. participates in E-Verify and will provide the federal government with your I-9 information to confirm that you are authorized to work in the United States.
In compliance with the ADA Amendments Act (ADAAA), if you have a disability and would like to request accommodation in order to apply for a position with us, please email recruiting-accommodations@amrize.com. This email address should only be used for accommodations and not general inquiries or resume submittals. In Ontario, our organization/business is committed to fulfilling our requirements under the Accessibility for Ontarians with Disabilities Act. Under the Act, accommodations are available on request for candidates taking part in all aspects of the selection process.
While we sincerely appreciate all applications, only candidates selected for an interview will be contacted.
PROTECT YOURSELF FROM RECRUITMENT FRAUD
The only way to apply for a position at Amrize is through our official Careers website. Be cautious of unsolicited offers or requests for information from other sources. Learn how to protect yourself from recruitment fraud here: Fraudulent Job Offers Policy

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