Top Mechanical Engineering Jobs in Chicago, IL

Design and develop balance-of-plant thermal-fluid systems for a first-of-a-kind nuclear power plant, including steam, feedwater, condensate, condenser, heat exchanger, pump, valve, piping, and auxiliary systems. Perform thermal, structural, and fluid analyses; create CAD models and documentation; coordinate with vendors; support manufacturing, testing, commissioning, regulatory submissions, and system integration. Manage bills of materials, configuration control, schedules, budgets, and cross-functional design activities through deployment.

Leads mechanical architecture, design, simulation, verification, validation, and risk management for complex medical devices from conception through launch. Performs tolerance analysis, FEA, kinematic modeling, prototyping, and design-for-manufacturing optimization. Ensures compliance with medical device quality systems and regulations while collaborating with manufacturing, quality, and supply chain teams. Mentors junior engineers, manages multiple projects, and prepares technical documentation and presentations.

Leads mechanical product development, conceptual and detailed design, engineering analysis, prototyping, design reviews, and new product introduction. Collaborates with industrial designers, customers, manufacturing, sales, and engineering teams to resolve technical issues and ensure products meet performance, quality, regulatory, and manufacturability requirements. Performs FEA on plastic and metal designs and supports APQP, DFMEA, PFMEA, testing, documentation, and product release.

Designs and develops mechanical product assemblies, fixtures, enclosures, and manufacturing processes for predictive-maintenance products. Responsibilities include SolidWorks modeling, component DFM/DFA, BOMs, drawings, material selection, prototype building and testing, structural integrity, regulatory compliance, and production readiness. The role coordinates with internal teams, supply-chain partners, and manufacturers while managing schedules and communicating progress on a distributed remote team.

Designs tooling, jigs, fixtures, compound dies, and progressive dies for metal-forming applications using SolidWorks, AutoCAD, or comparable CAD software. Details designs, supports tight-tolerance requirements, liaises with the toolroom, and collaborates with customers to incorporate design specifications.

Designs, analyzes, tests, maintains, repairs, and improves mechanical systems and components. Responsibilities include signing and sealing engineering documents, developing and evaluating systems, creating blueprints, conducting field visits, managing projects, and applying engineering analysis under general supervision. The role requires a Professional Engineer license, strong problem-solving and communication skills, and willingness to work in varied physical environments. Travel is required 5–10% of the time.

Designs and integrates novel electromechanical and fluidic hardware for GutLab products. Responsibilities include prototype assembly, testing, troubleshooting, repair, test automation, fixture development, documentation, and quality support. The role requires hands-on hardware development, CAD-based design, wiring, soldering, scripting, and collaboration across disciplines to transition products from prototype toward production.

Leads troubleshooting and improvement of dry gas seal designs for turbomachinery. Performs seal calculations, CSTEDY and ANSYS analyses, CAD work, test-data interpretation, root-cause investigations, engineering changes, customer reporting, and design testing. Provides manufacturing and operations guidance, manages difficult customer testing situations, develops product enhancements, publishes technical materials, and trains junior engineers.

The Mechanical Engineer will serve as either a Mechanical Reliability Engineer or Mechanical Project Engineer. Responsibilities include supporting maintenance and operations, improving preventive and predictive maintenance programs, troubleshooting equipment, managing outages, conducting root cause analyses, and coordinating capital projects. Project duties include developing designs, estimates, specifications, schedules, and startup plans while managing contractors, costs, timelines, and construction activities. The role requires collaboration across engineering, maintenance, operations, purchasing, and suppliers.

Designs, analyzes, and supports mechanical seals, couplings, bearings, filters, and fluid-control products. Responsibilities include application engineering, advanced seal and fluid calculations, CSTEDY analysis, product development, testing, failure investigation, troubleshooting, technical specifications, CAD direction, engineering change control, customer presentations, and technical training. The role also manages development projects, supports production transitions, and provides technical guidance to engineers and customers.

Develop thermal-hydraulic models for scientific apparatus using ASME B31.3-2022 for installation at a research reactor. Perform steady-state and transient temperature modeling, work independently, and coordinate with EPC contractors and vendors on costs and budgets. The role is remote, part-time, and temporary, with at least four required site visits to State College, Pennsylvania. U.S. citizenship, background screening, drug-free status, and references are required.

Design and quality-check commercial HVAC and electrification systems, including VRF, heat pumps, ERV, and DOAS installations. Develop load calculations, equipment selections, refrigerant piping designs, standards, and contractor-ready scopes. Support commissioning, troubleshooting, energy savings calculations, utility incentives, controls coordination, and hydronic engineering. Collaborate with cross-functional teams, contractors, manufacturers, and third-party MEP firms while mentoring engineers and scaling repeatable UHP project designs.

Designs and optimizes mechanical systems for mission-critical data centers, including HVAC, heat rejection, cooling distribution, airflow, redundancy, fault tolerance, heat-load calculations, CFD analysis, energy efficiency, air quality, and capacity planning. Coordinates mechanical designs with electrical and other engineering disciplines, supports client-facing projects, and ensures compliance with data center standards and best practices.

Performs independent mechanical engineering design, calculations, equipment sizing, controls documentation, code compliance, and Revit modeling across project phases. Coordinates with internal disciplines, consultants, and clients; responds to RFIs and submittals; conducts field verification and construction observations; supports QAQC, peer reviews, project planning, and mentoring of junior staff.

Senior Mechanical Engineer responsible for designing critical facility and data center mechanical systems, developing specifications and layouts, coordinating with multidisciplinary teams, supervising construction administration, managing client and contractor interactions, evaluating building conditions and system options, and mentoring staff. The role requires consulting-firm MEP experience, employee supervision, PE licensure, and hands-on CAD/Revit design expertise.

Own mechanical hardware systems from requirements through design, manufacturing, testing, integration, production, maintenance, and repair. Responsibilities include subsystem architecture, detailed CAD design, tolerance analysis, design for manufacturability, vendor coordination, test fixture development, instrumentation, data analysis, failure analysis, documentation standards, and hands-on warehouse testing of physical products.

Design, fabricate, test, and iterate mechanical components and assemblies. Build and wire prototypes, perform machining and 3D printing, run tests, analyze data, write Python or C scripts for hardware testing, integrate systems, document work, and maintain or repair hardware in service.

Designs mechanical and electromechanical test fixtures, tooling, and related hardware for optical networking products. Responsibilities include CAD modeling, engineering drawings, BOMs, configuration-controlled documentation, engineering analysis, tolerance studies, fabrication support, assembly, troubleshooting, validation, and deployment. The role collaborates with engineers, technicians, suppliers, and manufacturing partners to deliver reliable, manufacturable solutions throughout the product development lifecycle.

Leads medium-complexity manufacturing engineering projects, including equipment design, process improvements, automation, machine rebuilds, and manufacturing line installations. Develops technical specifications, layouts, schedules, budgets, and project documentation. Provides hands-on troubleshooting and technical support for mechanical, hydraulic, pneumatic, and electrical systems. Collaborates with plant, maintenance, EH&S, vendors, and other stakeholders to improve productivity, reliability, safety, and cost efficiency. Extensive travel is required.

Lead the architecture, hydraulic design, documentation, integration, manufacturing readiness, controls coordination, and commissioning of liquid-cooling and mechanical distribution systems for modular AI data centers. Own P&IDs, calculations, equipment and valve schedules, interfaces, standards, and performance validation. Collaborate with thermal, electrical, controls, manufacturing, commissioning, supply chain, OEM, and field teams to create scalable, serviceable, repeatable systems for deployment across multiple sites.

Designs and coordinates mechanical and electrical building systems in BIM using Revit and related software. Creates layouts, schematics, schedules, drawings, and shop drawing submittals; manages revisions and as-built information; coordinates MEP subcontractors; resolves design issues; supports budgeting, material ordering, field inspections, and customer communication. Ensures designs comply with specifications, building codes, safety requirements, and quality documentation standards.

Leads mechanical engineering for data center operations, including HVAC and cooling system design, infrastructure optimization, capacity planning, energy efficiency, maintenance practices, and project delivery. Provides operational troubleshooting and technical leadership, manages vendors and multidisciplinary teams, ensures regulatory compliance, and supports reliable, sustainable, cost-effective data center infrastructure. Travel up to 25% is required.

Own the mechanical design, documentation, integration, testing, and commissioning of industrial automation systems and EOAT. Develop SolidWorks models, drawings, BOMs, and release processes; troubleshoot electromechanical systems; support manufacturing, product development, and field deployments; and collaborate with vendors, integrators, and cross-functional teams. The role is hands-on and requires shop-floor work, with travel up to 25%.

Own mechanical design, documentation, and commissioning for industrial automation systems, robotic equipment, conveyors, material-handling systems, and EOAT. Responsibilities include SolidWorks modeling, drawings, BOM management, prototyping, assembly, system integration, troubleshooting, testing, root-cause analysis, design for manufacturability, vendor coordination, and supporting product improvements. The role is hands-on and requires shop-floor work, cross-functional collaboration, on-site work near Chicago, and travel up to 25%.

Owns end-to-end mechanical design, documentation, prototyping, integration, and commissioning of industrial automation systems and robotic end-of-arm tooling. Responsibilities include SolidWorks modeling, drawings, BOMs, release control, troubleshooting, testing, root-cause analysis, design for manufacturability, vendor coordination, and continuous improvement. The role works hands-on on the shop floor and collaborates across mechanical, electrical, controls, software, product, and deployment teams.