What Does a Process Engineer Do?
A process engineer designs, monitors, and improves the steps a plant uses to turn raw materials into a finished product, with the goals of higher yield, consistent quality, lower cost, and safe operation. Process engineers work in chemical, oil and gas, pharmaceutical, food and beverage, semiconductor, and discrete manufacturing plants. They write operating procedures, analyze process data with statistical process control, troubleshoot equipment and quality problems, and manage changes to the line. Most employers require a bachelor’s degree in chemical, mechanical, or industrial engineering, and mid-level roles ask for 2 to 5 years of plant experience.
A chemical engineer holds a specific degree and often works in research or plant design, while a process engineer holds a job title that people with chemical, mechanical, or industrial engineering degrees all fill. A manufacturing engineer usually works in discrete manufacturing on machining, assembly, tooling, and fixtures, and an industrial engineer focuses on labor, layout, and workflow efficiency. A quality engineer owns inspection, specifications, and corrective action, and works with the process engineer when a process produces defects.
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Hiring a Process Engineer: What to Expect
Process engineers come from other plants in the same industry, from engineering co-op and rotation programs, and from production supervisor or technician roles when the candidate holds an engineering degree. Screen for the process type and equipment they worked on, the statistics and root cause tools they use, and a measured improvement they made, such as a yield or scrap result. Ask them to explain how they took their last line modification through a management of change (MOC) process and who signed off, because the answer shows whether they have worked in a regulated plant.
Process engineer postings tend to leave out the industry and process type. A chemical plant process engineer, a pharmaceutical process engineer, and a semiconductor process engineer use different equipment, regulations, and software, so a generic posting gets applicants who cannot do the job. Name the product, the main equipment, the regulations that apply (such as OSHA Process Safety Management or FDA current good manufacturing practice), and the shift or on-call coverage the role expects.
A posting for this role should name the industry, the process type (batch, continuous, or discrete), and whether the job supports an existing line or a new plant startup. It should also list the data tools the engineer will use, such as AVEVA PI, JMP, Minitab, Python, or Power BI.
On architecture and engineering searches, 4 Corner Resources typically submits qualified candidates within 2 to 5 days, clients interview an average of 1.4 candidates per hire, and we submit 1.82 candidates per hire.
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Process Engineer Core Responsibilities
- Design, analyze, and improve production processes for yield, quality, cost, and safety
- Develop process documentation, technical specifications, and operating procedures
- Conduct designed experiments (DOE) and process simulations in tools such as Aspen Plus or Aspen HYSYS to validate process designs
- Troubleshoot process issues with root cause tools such as 5 Whys and fishbone diagrams, and recommend corrective actions
- Collaborate with engineers, operators, and quality teams on project delivery
- Maintain compliance with OSHA Process Safety Management, EPA rules, and FDA current good manufacturing practice where they apply
- Take process changes through management of change (MOC) and support process hazard analyses (PHA) and HAZOP reviews
- Implement process improvements using Lean and Six Sigma methodologies
- Evaluate and integrate new equipment, sensors, and control upgrades to improve production
- Pull and analyze process historian data from AVEVA PI or a similar system using Python, JMP, Minitab, or Power BI
- Support startup and commissioning of new lines and plants, including equipment checkout and validation
- Review alerts from AI-based anomaly detection or predictive maintenance tools against plant data before acting on them
Required Skills and Qualifications
Hard skills
- Strong knowledge of process design and engineering principles
- Proficiency in CAD and simulation tools (AutoCAD Plant 3D, Aspen Plus or Aspen HYSYS, MATLAB)
- Understanding of quality management systems such as ISO 9001 and regulatory standards such as OSHA PSM and FDA current good manufacturing practice
- Data analysis and statistical process control in Minitab, JMP, or Python, using historian data from systems such as AVEVA PI
- Ability to read P&IDs and process flow diagrams
- Working knowledge of DCS and PLC control systems, including how to specify control logic changes
Soft skills
- Strong analytical and problem-solving abilities
- Attention to detail and commitment to quality
- Clear communication with operators, maintenance, and quality staff, including written procedures and shift handoff notes
- Willingness to respond to line problems during off-shift or on-call coverage
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required
Certifications
- Six Sigma Green Belt, such as ASQ CSSGB, or Lean Manufacturing certification recommended
- Professional Engineer (PE) license recommended for senior roles
- OSHA 30-hour General Industry training for roles on the plant floor
Preferred Qualifications
- 2 to 5 years of plant experience in manufacturing, chemical, or industrial environments
- Familiarity with automation systems and process control software such as Emerson DeltaV, Honeywell Experion, or Rockwell FactoryTalk
- Experience with continuous improvement initiatives and cost-reduction projects
- Startup and commissioning experience on a new line or plant
- Python or SQL skills for plant data analysis, including review and testing of code suggested by AI assistants such as GitHub Copilot
How Much Does a Process Engineer Make?
Typical national range: $86,896 to $116,871, with a national average of $96,471. Salary data reviewed October 2026 by 4 Corner Resources.
Compensation for process engineers varies by experience, industry, and the scope of responsibilities. Those in specialized fields like chemical or petrochemical engineering generally receive higher pay. Click below to explore salaries by local market.
The average national salary for a Process Engineer is:
$96,471
Sample Job Description Templates for Process Engineers
Entry-Level Process Engineer
Position Overview
We are seeking an entry-level process engineer to support the design, analysis, and improvement of industrial processes. This role is ideal for recent graduates who want to apply engineering principles in manufacturing, energy, or related industries while learning under the guidance of senior engineers.
Responsibilities
- Assist in process design, development, and improvement projects
- Collect and analyze production data from the process historian and SPC charts to find yield and scrap losses
- Support troubleshooting and maintenance of process equipment
- Prepare technical documentation and standard operating procedures
- Collaborate with operators and engineers on project tasks
- Follow plant safety, environmental, and management of change (MOC) procedures
Requirements
Hard skills
- Foundational knowledge of process engineering principles
- Familiarity with CAD or process simulation tools such as AutoCAD or Aspen Plus
- Ability to analyze data in Excel, Minitab, JMP, or Python and prepare reports
- Ability to read P&IDs and process flow diagrams
Soft skills
- Eagerness to learn and accept mentorship
- Strong problem-solving skills
- Attention to detail and accuracy in documentation
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required
Preferred Qualifications
- Internship or co-op experience in manufacturing or process environments
- Exposure to Lean or Six Sigma methodologies
- Coursework or projects using Python for data analysis
Junior Process Engineer
Position Overview
We are hiring a junior process engineer to assist with process development and optimization projects. This role requires some prior experience or training and the ability to handle moderately complex engineering tasks with supervision.
Responsibilities
- Contribute to process modeling and simulation studies in Aspen Plus, Aspen HYSYS, or MATLAB
- Monitor production systems with SPC charts and historian trends, and recommend small-scale improvements
- Support testing and validation of new process designs
- Work with quality assurance teams on deviations, corrective and preventive actions (CAPA), and plant standards
- Assist in troubleshooting issues in production environments
- Maintain accurate documentation for assigned projects
Requirements
Hard skills
- Proficiency in CAD and process modeling software, such as AutoCAD Plant 3D and Aspen Plus
- Understanding of quality and safety protocols
- Ability to conduct basic data analysis and reporting in Minitab, JMP, Python, or Power BI
Soft skills
- Clear communication with operators and shift supervisors
- Analytical mindset and attention to detail
- Ability to manage multiple tasks with guidance
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required
Preferred Qualifications
- 1 to 2 years of professional experience in process or manufacturing engineering
- Familiarity with Six Sigma or Lean Manufacturing practices
Mid-Level Process Engineer
Position Overview
We are seeking a mid-level process engineer to design, implement, and optimize industrial processes. This role requires independent problem-solving, technical expertise, and collaboration with cross-functional teams to improve efficiency and quality.
Responsibilities
- Lead process design and optimization projects within assigned areas
- Develop process documentation, including technical specifications and SOPs
- Analyze historian and SPC data to identify bottlenecks and implement improvements
- Troubleshoot equipment and process issues with root cause analysis and track corrective actions to closure
- Collaborate with operations, maintenance, and quality teams
- Take process changes through management of change (MOC) and follow environmental, health, and safety regulations
- Review alerts from AI-based predictive maintenance or anomaly detection tools and confirm them against plant data
Requirements
Hard skills
- Strong knowledge of process engineering principles and practices
- Proficiency with simulation and modeling tools such as Aspen HYSYS or MATLAB
- Experience in process troubleshooting and root cause analysis
- Data analysis in Python, JMP, or Minitab using historian data from AVEVA PI or a similar system
Soft skills
- Project coordination with operations, maintenance, and quality teams, including written status updates
- Analytical and detail-oriented mindset
- Ability to manage projects independently with minimal supervision
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required
Preferred Qualifications
- 3 to 5 years of experience in process or manufacturing engineering
- Experience with continuous improvement projects and automation systems such as DCS and PLC controls
- Startup and commissioning experience on new equipment
Senior Process Engineer
Position Overview
We are hiring a senior process engineer to manage advanced process improvement projects and provide technical leadership. This role requires extensive engineering experience, the ability to guide junior staff, and expertise in scaling production systems.
Responsibilities
- Oversee the design and optimization of complex processes
- Mentor junior and mid-level engineers, providing technical guidance
- Lead troubleshooting efforts and resolve recurring process issues
- Work with plant leadership on long-term process and capital plans
- Lead process hazard analyses (PHA) and HAZOP reviews, and maintain compliance with OSHA PSM, EPA, and FDA requirements where they apply
- Conduct cost-benefit analyses and recommend equipment or system upgrades
- Lead startup and commissioning for new lines and major equipment
Requirements
Hard skills
- Advanced knowledge of process engineering and manufacturing systems
- Proficiency with advanced process modeling and simulation tools such as Aspen Plus, Aspen HYSYS, or COMSOL
- Strong understanding of OSHA PSM, current good manufacturing practice, ISO 9001, and plant quality systems
- Experience building Python or Power BI analyses on historian data for plant teams
Soft skills
- Leadership and mentoring abilities
- Strong decision-making and problem-solving skills
- Clear communication with operators, plant leadership, and finance on project cost and results
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required; master’s degree preferred
Preferred Qualifications
- 7 or more years in process or manufacturing engineering
- Professional Engineer (PE) license or Six Sigma Black Belt certification
Lead Process Engineer
Position Overview
We are seeking a lead process engineer to oversee multiple process engineering projects and provide direction to engineering teams. This role combines technical expertise with leadership responsibilities so projects are delivered on time and meet plant goals.
Responsibilities
- Lead and coordinate engineering teams on large-scale process projects
- Approve technical designs, process documentation, and specifications
- Oversee process improvement initiatives to enhance efficiency and safety
- Support long-term plans for process upgrades, plant data systems, and AI-based analytics tools
- Collaborate with senior management on budgets and resource planning
- Train and mentor engineers on MOC, root cause analysis, and plant data tools
Requirements
Hard skills
- Expertise in advanced process engineering, design, and troubleshooting
- Knowledge of large-scale manufacturing systems, including DCS, MES, and process historian systems
- Strong project management and cross-functional coordination skills
Soft skills
- Leadership and team management abilities
- Organization across several projects, budgets, and schedules at once
- Clear presentations to plant leadership, operations, and finance
Education
- Bachelor’s degree in chemical, industrial, or mechanical engineering required; master’s degree recommended
Preferred Qualifications
- 10 or more years in engineering, with leadership roles in process improvement
- Experience with Lean Six Sigma or other structured improvement frameworks
Principal Process Engineer
Position Overview
We are hiring a principal process engineer to provide technical and strategic leadership across engineering operations. This role requires deep expertise in process design, optimization, and innovation, as well as influence at the organizational level.
Responsibilities
- Define technical strategy for process design and improvement initiatives
- Lead enterprise-wide projects and set engineering standards
- Provide subject matter expertise for highly complex engineering challenges
- Mentor lead and senior engineers and review their technical work
- Work with executives on long-term capital, energy efficiency, and emissions goals
- Represent the organization in external forums, industry groups, and partnerships
- Set company standards for plant data, AI-based analytics, and model validation before results are used in operating decisions
Requirements
Hard skills
- Mastery of process engineering, design, and optimization
- Advanced knowledge of automation, simulation, and manufacturing systems
- Expertise in regulatory compliance, safety, and sustainability standards such as OSHA PSM, EPA reporting, and ISO 14001
Soft skills
- Executive-level leadership and strategic vision
- Strong influence and mentorship abilities across teams
- Clear communication with executives, regulators, and industry partners
Education
- Bachelor’s degree in engineering required; master’s degree or PhD preferred
Preferred Qualifications
- 15 or more years in professional engineering, with senior leadership responsibilities
- Professional Engineer (PE) license or Six Sigma Master Black Belt certification
- Record of leading process improvements adopted across multiple plants