Process Engineer Jobs in Mount Vernon, IL (NOW HIRING)

Salem, IL - Relocation Assistance Available 

Competitive base salary plus comprehensive benefits

*U.S. Citizenship or Green Card Required*

You’ll be the Manufacturing Engineer who keeps high-volume automotive assembly lines sharp, efficient, and ready for the next new product.

This is hands-on ownership of assembly processes from concept to full production — layouts, tooling, APQP, prototypes, and continuous improvement.

You’re not just supporting production. You’re shaping how new lighting products are built, scaled, and launched.

If you know how to turn smart engineering into smooth, reliable manufacturing, we want to talk to you.

You’ll be the go-to technical resource for complex automotive assembly operations:

• Assembly line layouts and workflow optimization
• Assembly methods and change-over fixturing
• Gauges, WIP storage, and tool storage strategy
• Advanced Product Quality Planning (APQP)
• Process FMEAs and process flow development
• Process design documentation and standards
• Prototype and pre-production builds
• Project milestone and micro-schedule support

You’ll work directly with plant assembly operations, APQP deliverables (PFMEA, Process Flow Charts, Process Design Sheets), and internal reporting like ISIR.

Your core challenge: make complex assembly processes safer, faster, and more reliable — without sacrificing quality.

• Providing day-to-day technical support for assembly processes in the plant
• Training team members on assembly processes and best practices
• Analyzing assembly line layouts, workflow, and assembly methods to maximize efficiency
• Evaluating and improving change-over fixturing, gauges, and tool storage
• Designing and maintaining work-in-process (WIP) storage strategies
• Developing APQP requirements including PFMEA, Process Flow Charts, and Process Design Sheets
• Leading and participating in prototype and pre-production sample builds
• Preparing and distributing internal Initial Sample Inspection Reports (ISIR)
• Supporting program-level project macro-schedules with detailed engineering micro-schedules
• Tracking project milestones and driving on-time completion of engineering deliverables
• Identifying process equipment load requirements for new and existing lines
• Defining tooling, equipment, and new process needs and communicating them to internal stakeholders

• Bachelor’s degree in Engineering, Industrial Technology, or a related discipline
• 2 to 4 years of related manufacturing experience
• Background working with assembly processes in a production environment
• Experience developing or working with PFMEA, process flows, or similar quality planning tools
• Comfort leading and supporting prototype and pre-production builds
• Ability to analyze layouts, workflows, and methods for efficiency improvements
• Experience supporting cross-functional project schedules and milestones
• Exposure to Just In Time (JIT) automotive manufacturing is preferred

You’ve been the manufacturing or process engineer that production calls first — the one who understands the line, the tooling, and the quality docs, and can turn problems into stable processes. You’re comfortable in a JIT, automotive-style environment where uptime, timing, and quality all matter.

If you’ve personally driven improvements in assembly efficiency using APQP tools and supported successful prototype-to-production launches, you’ll stand out here.

High-signal experience: APQP • PFMEA • Process Flow Charts • Process Design Sheets • Assembly line layout • Change-over fixturing • Gauges • WIP management • Tool storage • Prototype builds • Pre-production builds • ISIR • JIT automotive manufacturing

You’ll step into a high-impact role where your engineering decisions directly affect throughput, quality, and launch timing for advanced automotive lighting products.

You get both sides of manufacturing engineering: stabilizing and improving current assembly processes, and engineering the path for new product designs to be built at scale.

On top of that, you’ll have access to world-class health insurance, an award-winning 401k plan, paid time off, relocation assistance, supplier discounts, and a company-sponsored wellness program with gym reimbursement.

You’ll be part of an organization that actively supports diversity and mutual respect across all backgrounds, perspectives, and abilities.

Bachelor’s degree in Engineering, Industrial Technology, or related discipline required

2 to 4 years of related manufacturing experience required

If you’re ready to own manufacturing processes, drive real improvements on the line, and help launch next-generation automotive lighting, let’s talk.

Please send your resume to

Jake Moyer

Manufacturing Engineer, Manufacturing Engineering, Process Engineer, Industrial Engineer, Automotive Manufacturing, JIT, Just In Time, Assembly Line, Assembly Processes, APQP, Advanced Product Quality Planning, PFMEA, Process Failure Mode and Effects Analysis, Process Flow Charts, Process Design Sheets, Prototype Builds, Pre-Production, ISIR, Initial Sample Inspection Report, WIP, Work In Process, Tooling, Fixtures, Change-over Fixturing, Gauges, Production Engineering, Industrial Technology, Salem IL jobs, automotive lighting, plant engineer, production support

Libertyjobs.com has become an essential destination site for experienced job seekers. Our recruiters are continually posting active job openings to the website. Feel free to search our database of open positions and apply for your next career move!

Hundreds of new jobs are listed on the site every month in a wide range of industries and locations. Last year we had over 900,000 unique job seekers visit our website, which means over 75,000 skilled job seekers search our openings every month.

Established in 2003, Liberty Personnel quickly grew into one of the largest technical recruiting agencies on the East Coast. Today, Liberty Personnel has a national presence and a diverse client base. Listed below are a number of the industries and openings we work on:

Information Technology, Software Programmers, Engineering, Manufacturing, Legal, Plant Maintenance, Construction, Oil and Gas, Medical Communications, Accounting, Finance, Electronics, Scientific, Medical Device, Sales, Pharmaceutical, Admin, Automation, Controls, Civil, HVAC, Wastewater, Structural, Electrical, Chemists, Validations, Logistics, Food Production, Renewable Energy and Machinists.