Top Process Engineer Jobs in Chicago, IL

Performs entry-level process engineering and design for industrial projects, including equipment sizing and rating, hydraulic analyses, PFD and P&ID development, heat and material balances, and technical specification support. Evaluates equipment and processes for safety, environmental, and operational compliance; manages engineering data; presents technical information; and coordinates assignments across competing priorities. The role is primarily office-based with possible production-site assignments.

Drive manufacturing process improvements using data-driven analysis, Lean and Six Sigma methods to increase throughput, reduce scrap and downtime, standardize work, and support new equipment validation across machining, fabrication, assembly, and finishing.

Lead design and implementation of process projects ($2M–$10M) including equipment selection, P&ID and sanitary design, vendor/contractor management, procurement, schedule and budget oversight, construction support, and start-up activities while supporting client development and project execution.

Own process engineering for chocolate and confectionery innovation projects from technical brief through factory implementation. Translate recipes into process flows, equipment requirements, operating parameters, trial plans, and scale-up strategies. Lead factory trials, validation, commissioning, troubleshooting, root-cause analysis, process optimization, commercialization, shelf-life support, and technical documentation while collaborating with R&D, Culinary, Quality, Operations, Engineering, suppliers, and co-manufacturers.

The Process Engineer will optimize plastic blow molding processes, troubleshoot issues, train staff, and develop strategies to improve efficiency and reduce costs.

Develop process flow and piping diagrams, heat and material balances, equipment sizing, hydraulic analyses, relief and flare system designs, and process hazard reviews. Evaluate safety and environmental compliance, estimate and track project effort, solve design problems, present technical information, and coordinate or supervise junior engineering staff. The role supports energy and chemical industry projects and requires independent application of standard process engineering methods.

Lead a process engineering team to develop PFDs and P&IDs, size and specify equipment, perform hydraulic and relief/flare analyses, participate in HAZOP/LOPA, ensure regulatory compliance, mentor junior engineers, and support resourcing and project delivery for energy and chemical projects.

The Associate Process Engineer will lead and assist in process design, conduct technical evaluations, develop design documentation, and provide field support for engineering projects.

Lead and assist in process design for refinery and industrial applications, conduct evaluations, develop technical documentation, and manage field execution.

The Principal Process Controls Engineer leads project teams in automation design, mentors junior engineers, collaborates with clients, and develops process control standards, focusing on the food and beverage industry.

Hands-on R&D engineer designing and running experiments/DOEs to mature lab and pilot processes for nonwoven fabrics and adsorbents. Operate pilot spunbond/meltblown/lamination equipment, analyze data to define CQAs and process windows, document findings, manage samples and inventory, and support scale-up toward commercial production.

Lead development, characterization, qualification and transfer of high-volume optoelectronic assembly processes. Design and run DOE, perform FMEA/RCCA, specify/procure equipment, design tooling, document processes, train technicians, and ensure successful manufacturing transfer and equipment maintenance.

Plan, develop, and execute process engineering tasks for federal industrial and manufacturing projects. Create PFDs/P&IDs, perform mass/energy balances and equipment sizing, support PHAs/HAZOPs, prepare specifications, coordinate multidisciplinary teams, assist construction/commissioning/startup, and mentor junior engineers while ensuring safety, compliance, and process optimization.

Design and analyze chemical process systems: produce PFDs, P&IDs, heat and material balances, process simulations, and equipment datasheets. Size and rate pumps, vessels, exchangers, and relief systems; perform hydraulic and flare header analysis. Prepare instrument and line lists, process descriptions, and participate in HAZID/HAZOP reviews. Support projects as an individual contributor and present technical information to clients and peers.

Drive analysis, optimization, and continuous improvement of manufacturing processes. Manage plant CAPEX projects from specification through commissioning. Support maintenance planning, supplier and HSE collaboration, equipment validation, troubleshooting, KPI analysis, corrective actions, and Quality Management System improvements to enhance efficiency, safety, quality, and cost-effectiveness.

The Process Safety Engineer will conduct consequence modeling, risk assessments, and support process safety services while interacting with clients.

Lead piping stress and mechanical design for industrial/process facilities: perform CAESAR II analyses, evaluate nozzle and equipment loads, design supports and interfaces, prepare calculations and reports, coordinate multidisciplinary designs, support construction/startup, mentor junior engineers, and ensure code-compliant, constructible solutions.

Lead process design for industrial projects (pet food, meat processing), develop PFDs/P&IDs and material balances, specify equipment, run simulations (AFT, HTRI), coordinate vendors/teams, support construction/commissioning, and mentor junior engineers.

Lead automation projects across design, engineering, implementation, commissioning and lifecycle support. Serve as technical authority for control systems (DCS), provide cybersecurity and operational support, collaborate with sites and vendors, ensure safety and regulatory compliance, and travel for commissioning as needed.

Develop, characterize, qualify, and transfer assembly manufacturing processes to production. Design and run DOE, perform FMEA and root-cause analysis, design tooling/fixtures, document processes, train technicians, and oversee equipment procurement, calibration, and maintenance for high-volume optoelectronic assembly.

Design, build, and maintain scalable automated workflows and integrations using platforms like n8n, Zapier, Make, or Workato. Integrate systems via APIs/webhooks, troubleshoot workflow issues, monitor performance, document processes, and support data synchronization across CRMs and business tools while collaborating with cross-functional teams.

Lead the qualification and process development for a new InP photonics semiconductor fabrication facility, focusing on process integration and yield improvement.