Senior Mechanical Engineer — Optical Interconnects
Molex Inc
Molex is seeking an innovative Senior Mechanical Engineer to join our R&D team focused on fiber optic interconnect solutions for cloud, AI, and hyperscale markets. Lead product development from concept to industrialization, drive simulations and testing, and ensure DFMA-friendly designs in coordination with manufacturing and patent teams. Ideal candidates have 5+ years in NPD, strong experience with NX/Creo/SolidWorks, GD&T, and FEA, and a demonstrated ability to work across cross-functional #J-18808-Ljbffr Molex
$120k - $160k
...EngineeringJob Number: 195177Apply: JobMolex is seeking an innovative Senior Mechanical Engineer to join our R&D team. This team is responsible for the conceptualization of industry leading fiber optic interconnect solutions and systems in rapidly growing markets in cloud...SeniorFlexible hours$100k - $130k
...combined with the resources, stability, and engineering expertise of a global industry leader.This role leads the mechanical design, product validation, and manufacturing... ...testing (NDT), including X-ray inspection and optical or electron microscopyFamiliarity with Finite...SeniorFlexible hours- ...Our client is a multidisciplinary engineering firm focusing on the design, integration, and construction management of capital asset... ...partnerships with their clients and vendors. Our client is seeking a Mechanical Project Engineer. While this position will be based in the...SeniorContract workWork at office
$115k - $167.5k
...Minnesota / Milwaukee, Wisconsin / Downers Grove, IllinoisFacilities Engineering – Mechanical /Full Time (40) /HybridTKDA is a 100% employee-owned engineering, architecture, and design firm seeking a Senior Professional Mechanical Engineer to join our Facilities...SeniorFull timeH1bVisa sponsorshipWork visaMonday to FridayNight shift$102.5k - $138.5k
...Senior Mechanical Engineer As Chemring Energetic Devices (CED) celebrates 50 years of building products that protect our country, protect the individual warfighter, and send rockets into outer space, our growth is creating new opportunities to expand our team with...SeniorFor contractorsWork at officeShift work- Zachry Group is seeking a Principal Engineer Mechanical - HVAC in Downers Grove, IL. The role involves leading industrial HVAC and plumbing projects, estimating scopes, and coordinating across disciplines to ensure code-compliant design solutions. Responsibilities include...Senior
- ...blueprints, and operate CNC mills, EDMs, and surface grinders to tight tolerances. You’ll read drawings, write Mastercam programs, and collaborate with engineering and production to troubleshoot tooling and improve processes. #J-18808-Ljbffr Moldtronics Mold & MachiningSenior
- ENFRA LLC seeks a Mechanical Engineer PE II to sign and seal engineering documents, analyze and improve systems, and lead projects with direct client interaction. The role emphasizes strong problem-solving, communication, and technical expertise in a fast-paced environment...Senior
- Dover, headquartered in Downers Grove, Illinois, seeks an Advanced Manufacturing Engineer for Welding & Fabrication to lead process optimization and new equipment transitions. You will design manufacturing processes, drive OEE improvements, develop playbooks, and deploy...SeniorRemote job
$80k - $120k
...Your Job We are seeking a Mechanical Engineer to lead the design, development, and deployment of advanced fiber optic interconnect solutions. This role will be instrumental in driving Molex's mission to enable high-speed, high-density optical connectivity for tomorrow...Permanent employmentRelocation packageFlexible hours- ...surface grinders, ensuring tight tolerances and high-quality molds. Responsibilities include creating Mastercam programs, interpreting engineering drawings, and collaborating with engineering and QA to troubleshoot issues and drive continuous improvement. #J-18808-Ljbffr...Senior
$84.76k - $129.5k
...preparation or review of: Modification packages for operating nuclear power plants Functional mechanical drawings and/or drawings for nuclear power plant systems Engineering analyses and evaluations to support modifications and operation of plant systems Technical...SeniorHourly payWork at officeLocal areaRemote workWorldwideFlexible hours3 days per week- ENFRA in Illinois, USA, seeks a Mechanical Engineer PE II to design, analyze, test, maintain, and improve complex systems across energy infrastructure projects. The role requires a PE license, a bachelor’s in engineering, 6-8 years of experience, strong problem-solving...Senior
- Sargent Lundy is seeking a Senior Piping Engineer based in Warrenville, Illinois, who will provide technical direction and supervision for project teams. The role includes reviewing complex calculations, ensuring compliance with engineering standards, and leading design...SeniorWork at office3 days per week
$28k
...Senior Mechanical Engineer Opportunity Do you have an entrepreneurial spirit and a passion for engineering? Do you love designing and implementing complex electrical systems? Are you looking for a company that is constantly trying to push the boundaries of what it...SeniorFor contractorsFor subcontractorLocal area- TKDA is a 100% employee-owned engineering, architecture, and design firm seeking a Senior Professional Mechanical Engineer / Project Manager to join our Facilities Engineering division. You will lead the planning, design, and delivery of complex mechanical systems for industrial...Senior
- RINA is seeking a Senior Marine Structural Engineer to join our Plant Engineering team with offices in Houston, Sunrise/Ft. Lauderdale, Boston, and Chicago/Lisle. You will lead berthing, mooring, and structural designs for berth facilities, guide pile and fender analyses...Senior
- RINA is seeking a Senior Coastal Engineer to lead the maritime discipline from concept through construction for projects in the Environmental and Engineering Geoscience Division. The role supports offices in Houston, TX, Fort Lauderdale, FL or Chicago/Lisle, IL. You will...Senior
- Zachry Group is seeking a Stress Engineer IV for the Downers Grove Design Center. The role involves leading formal stress analysis of... ...safety and quality mindset. The ideal candidate has 10+ years in mechanical stress engineering, with extensive ASME code experience, and...Senior
- Sargent Lundy in Warrenville, Illinois, seeks an experienced engineer for a nuclear power plant systems design role. Responsibilities... ...developing cost estimates. Candidates should have a BS/MS in Mechanical or Chemical Engineering and over 10 years of experience in the...Senior
$90k - $130k
...Job Description Job Description Title: Senior Mechanical Engineer Location: Downers Grove, IL Hire Type: Direct Hire - in office 5 days a week. Shift/Hours: 40 Hours/Week Base Salary: $90k – $130k Benefits: * Industry-leading performance-based...SeniorWork at officeShift work$120k - $150k
Lombard, ILMechanical Engineering - Engineering /Full Time /HybridValdes Architecture & Engineering is seeking an experienced Senior Mechanical Engineer to support projects across municipal infrastructure, water and wastewater, building systems, industrial process facilities...SeniorFull timeFor contractorsLocal area- ...countries and 160 years of heritage, we turn individual know-how into collective progress. We are currently recruiting for a Senior Marine Structural Engineer to join our office in Houston, TX, Sunrise/Ft. Lauderdale, FL , Boston, MA or Chicago/Lisle, IL within the Plant...SeniorTemporary workWork at officeFlexible hours
$112k - $169k
Downers Grove, IllinoisFacilities Engineering - Mechanical /Full Time (40) /HybridTKDA is a 100% employee-owned engineering, architecture, and design firm seeking a Senior Professional Mechanical Engineer / Project Manager to join our Facilities Engineering division.In...SeniorFull timeH1bWork at officeVisa sponsorshipWork visaMonday to Friday- ...Senior Mechanical Engineer to support plant engineering, manufacturing operations, equipment improvements, and capital projects. Ready to apply Before you do, make sure to read all the details pertaining to this job in the description below. This is an all-around...Senior
$110k - $120k
...Senior Mechanical Engineer Naperville, Illinois - Posted on October 16, 2026 Published By Christina Pandiarajan Tremendous direct hire opportunity for a Senior Mechanical Engineer to join a robust and growing manufacturer in Naperville! The Sr. Mechanical Engineer...Senior$90k - $175k
...Overview ENERCON's Chief Engineering Group is seeking a Senior Mechanical Analysis Engineer to join the team in the Kennesaw, GA (Suburb of Atlanta) or FT Worth, TX, or Naperville, IL office locations. This role offers the chance to lead innovative mechanical engineering...SeniorWork at officeRemote work$90k - $110k
...seeking several innovative Mechanical Designers to join our R&D team... ...HQ in Lisle, IL. The Optical Connectivity Group is responsible... ...and/or molded products from engineers, product management, field engineering... ...supplier of connectors and interconnect components, driving...Flexible hours$107.2k - $204k
Overview Become a part of ENERCON as a Mechanical Design Engineer. We are seeking talented Mechanical Engineers to join our Nuclear Design Group.... ...path has many options. You can bring your experience to our senior roles or principal engineer position where you’ll lead and...SeniorFull timeContract workCurrently hiringRemote work- Enercon Services, Inc. is seeking a Mechanical Design Engineer to join the Nuclear Design Group. The role offers a path from senior engineer to principal engineer, mentoring others and leading projects across multiple locations, including Naperville, IL. You will contribute...Senior
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