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Sr Process Engineer Jobs in O Fallon, IL (NOW HIRING)

Senior Process Engineer

Brentwood, MO

$97K - $126K/yr

The Impact You Will Make This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design ...

Senior Process Engineer

Brentwood, MO

$97K - $126K/yr

The Impact You Will Make This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design ...

Senior Process Engineer

Brentwood, MO

$97K - $126K/yr

The Impact You Will Make This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design ...

Senior Process Engineer

Brentwood, MO · On-site

$97K - $126K/yr

The Impact You Will Make This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design ...

Senior Process Engineer

Brentwood, MO

$97K - $126K/yr

The Impact You Will Make This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design ...

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 ...

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 ...

Senior Process Chemist Kelly ® Science & Clinical is seeking a Senior Process Chemist for a 6 ... Collaborate with analytical chemists, process engineers, project managers, and external partners to ...

Senior Process Chemist Kelly ® Science & Clinical is seeking a Senior Process Chemist for a 6 ... Collaborate with analytical chemists, process engineers, project managers, and external partners to ...

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 ...

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 ...

The Process Engineer enables the safe and reliable production at a low cost that meets or exceeds the customer requirements. This role requires in-depth conceptual and practical knowledge in job ...

Senior Process Designer

Saint Louis, MO

$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 ...

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 ...

Senior Process Designer

Saint Louis, MO

$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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Showing results 1-20

Sr Process Engineer information

See O Fallon, IL salary details

$70K

$113K

$159K

How much do sr process engineer jobs pay per year?

As of Jul 27, 2026, the average yearly pay for sr process engineer in O'Fallon, IL is $112,978.00, according to ZipRecruiter salary data. Most workers in this role earn between $97,000.00 and $125,500.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Sr Process Engineer, and why are they important?

To thrive as a Sr Process Engineer, you need a solid background in chemical, mechanical, or industrial engineering, often with a bachelor's or master's degree and relevant industry experience. Familiarity with process simulation software (such as Aspen Plus or HYSYS), Six Sigma or Lean certifications, and knowledge of safety and regulatory standards are typically required. Strong problem-solving, project management, and communication skills help distinguish top performers in this role. These skills and qualifications are vital for optimizing processes, ensuring efficiency and safety, and driving continuous improvement in complex manufacturing environments.

What are Sr Process Engineers?

Senior Process Engineers are experienced professionals responsible for designing, optimizing, and overseeing the processes used in manufacturing or production environments. They analyze workflows, troubleshoot process issues, and implement improvements to increase efficiency, reduce costs, and ensure product quality. Sr Process Engineers often lead teams, manage projects, and work closely with other departments such as quality assurance, maintenance, and operations. Their expertise is crucial in industries like chemicals, pharmaceuticals, oil and gas, and food processing. They typically hold a degree in engineering and have several years of experience in process engineering roles.

How does a Sr Process Engineer typically collaborate with cross-functional teams to improve manufacturing efficiency?

Sr Process Engineers work closely with teams such as production, quality assurance, maintenance, and R&D to identify areas for process optimization. They often lead or participate in cross-functional meetings to gather data, analyze workflow bottlenecks, and implement solutions that enhance efficiency and product quality. Effective communication and project management skills are essential, as Sr Process Engineers must balance technical requirements with practical constraints while ensuring all stakeholders are aligned with proposed changes.

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

AspectSr Process EngineerProcess Engineer
QualificationsBachelor's degree in engineering, 5+ years experience, certifications like Six SigmaBachelor's degree in engineering or related field, 1-3 years experience
ResponsibilitiesLead process improvements, optimize manufacturing processes, mentor junior staffAssist in process development, data collection, support process optimization
Work EnvironmentManufacturing plants, industrial facilities, cross-functional teamsManufacturing settings, engineering teams, project-based tasks

The main difference between a Sr Process Engineer and a Process Engineer lies in experience, responsibility level, and scope of work. The Sr Process Engineer typically leads projects, mentors others, and has more advanced qualifications, while the Process Engineer supports and executes process improvements under supervision.

What cities near O'Fallon, IL are hiring for Sr Process Engineer jobs? Cities near O'Fallon, IL with the most Sr Process Engineer job openings:
Infographic showing various Sr Process Engineer job openings in O'Fallon, IL as of July 2026, with employment types broken down into 1% Locum Tenens, 88% Full Time, 9% Part Time, and 2% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $112,978 per year, or $54.3 per hour.
Senior Process Engineer

Senior Process Engineer

kindeva

Brentwood, MO

$97K - $126K/yr

Other

Posted 11 days ago


Kindeva rating

6.7

Company rating: 6.7 out of 10

Based on 9 frontline employees who took The Breakroom Quiz


Job description

Our Work Matters

At Kindeva we make products that save lives, ensuring better health and well-being for patients around the world.

The Impact You Will Make

This is an exciting opportunity as a Senior Process Engineer that will serve as a technical leader and subject matter expert (SME) that is responsible for the design, implementation, optimization, troubleshooting, and lifecycle management of aseptic manufacturing processes and equipment used in the production of sterile pharmaceutical and/or biopharmaceutical products. This role provides strategic engineering support to ensure reliable, compliant, and high-performance aseptic manufacturing processes for injectable drug products (vials, syringes, cartridges, etc.). The engineer drives process optimization, contamination control, equipment lifecycle management, and continuous improvement while maintaining full compliance with cGMP, FDA, EMA, ISO, and other regulatory requirements.

Key Responsibilities

  • Act as the primary SME for aseptic manufacturing equipment, utilities (WFI, clean steam, compressed gases), and fill-finish systems (vial washers, depyrogenation tunnels, isolators/RABS, filling lines, cappers, lyophilizers, robotic systems, etc.).
  • Provide technical leadership for aseptic fill/finish operations, including process design, scale-up, process validation, troubleshooting, and ongoing performance monitoring.
  • Ensure robust aseptic practices and contamination control strategies (CCS) are implemented and sustained across all sterile operations.
  • Lead or support equipment and process lifecycle activities, including design reviews, FAT/SAT, IQ/OQ, requalification, and decommissioning.
  • Author, review, and approve technical documents such as SOPs, batch records, change controls, deviations, CAPAs, risk assessments, validation protocols/reports, and investigation reports.
  • Perform in-depth root cause analysis (using tools such as Fishbone, 5-Why, FMEA) on mechanical, automation, environmental and process deviations; author and implement CAPAs to drive permanent corrective solutions to improve yield, reduce downtime, and strengthen contamination control. 
  • Drive process optimization and continuous improvement initiatives using Lean, Six Sigma, and data-driven approaches to increase yield, reduce cycle time, minimize interventions, and enhance sterility assurance.
  • Provide engineering oversight and troubleshooting support during manufacturing campaigns, including real-time shop-floor support for complex technical issues.
  • Collaborate with Quality Assurance, Validation, Microbiology, Regulatory, Supply Chain, Operations and MSAT teams to ensure successful tech transfers, new product introductions (NPI), and regulatory inspections.
  • Support regulatory submissions and inspections by preparing technical packages and defending aseptic processes.
  • Lead or significantly contribute to change controls, process improvement projects, and capital projects aimed at enhancing sterility assurance, throughput, and operational efficiency. 
  • Author, review, and approve SOPs, batch records, preventive maintenance plans, calibration procedures, and engineering protocols/reports. 
  • Support cleanroom performance qualification activities including airflow visualization (smoke studies), particle monitoring, pressure cascade management, and personnel/material flow optimization. 
  • Mentor and provide technical guidance to junior engineers, manufacturing technicians, and cross-functional team members.
  • Monitor and analyze process performance metrics (e.g., yield, intervention rate, environmental monitoring trends, downtime) and implement improvements.

Qualifications & Requirements:

Education

  • Bachelor’s degree in Chemical Engineering, Mechanical Engineering, Biomedical Engineering, Electrical Engineering, or a related technical discipline.

Experience

  • 3+ years of hands-on engineering experience in a cGMP regulated pharmaceutical, biopharmaceutical, or sterile medical device manufacturing environment.
  • Experience with isolator technology, RABS, vial/syringe/cartridge filling lines, lyophilization, aseptic connections, and closed-system processing.
  • Proven track record supporting sterile product manufacturing.

Preferred Technical Skills & Qualifications

  • Proficiency in mechanical design software: SolidWorks, AutoCAD Inventor, or equivalent (required: creation of complex 3D models, assemblies, detailed drawings, and tolerance analysis). 
  • Automation knowledge: PLC programming (ladder logic, structured text), HMI/SCADA development, troubleshooting industrial control systems, and integration of robotic arms, servo systems, and vision technologies. 
  • In-depth knowledge of aseptic fill-finish equipment: peristaltic/rotary piston pumps, vial/syringe/cartridge fillers, stoppering/capping systems, isolators/RABS, VHP decontamination, and barrier technologies. 
  • Solid understanding of process control, instrumentation, sensors, actuators, and data acquisition systems. 
  • Familiarity with data analytics tools (Excel, Minitab, JMP, OSIsoft PI) for process monitoring, capability analysis, and statistical evaluation. 
  • Knowledge of cGMP requirements, EU Annex 1 contamination control strategy, sterility assurance, and cleanroom classification
  • Experience executing or leading process/equipment validation, media fills, and cleaning validation in aseptic environments. 
  • Exposure to lean manufacturing, Six Sigma, or reliability-centered maintenance methodologies. 
  • Previous involvement in capital project execution or technology transfer projects

What We Offer 

  • Opportunity to take ownership of high-impact aseptic systems and automation projects. 
  • Exposure to state-of-the-art fill-finish and barrier technologies. 
  • Career development path toward Principal Engineer or technical leadership roles. 
  • Competitive salary, bonus eligibility, and comprehensive benefits package. 
  • Structured technical training and mentorship opportunities

#LI-Onsite 


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