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Design Engineer III

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: Essex Industries
Full Time, Seasonal/Temporary position
Listed on 2025-12-27
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Mechanical Engineer, Manufacturing Engineer, Systems Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Location: St. Louis

Essential Duties And Responsibilities

  • Leads multiple engineering programs, including defining the project scope of works, product development records, milestones, and staff requirements, and customer requirements.
  • Leads complete product design programs from requirements definition through detailed design, analysis, prototyping, verification, qualification testing, and production handoff.
  • Create and maintain 3D models, engineering drawings, and bills of material with appropriate GD&T and configuration control. (Solidworks Prefered)
  • Perform or coordinate necessary engineering analyses (e.g., structural, thermal, tolerance, reliability, FMEA) to validate design adequacy prior to test.
  • Plan and lead prototype build activities, working closely with manufacturing, supply chain, test, and quality to resolve technical issues.
  • Develop verification and qualification plans, including test methods, success criteria, sample configuration, and traceability to requirements.
  • Support or lead execution of design verification and qualification testing, including test readiness, test oversight, data review, and anomaly resolution.
  • Analyze test results, document non-conformances, drive root cause and corrective actions, and update designs and documentation as required.
  • Prepare and present design reviews (concept, preliminary, critical design, test readiness, qualification/production readiness) to internal and external stakeholders.
  • Ensure designs comply with applicable industry standards, customer specifications, and regulatory requirements.
  • Generate and maintain technical documentation, including design reports, analysis summaries, test reports, and qualification evidence.
  • Coordinate with project management to provide engineering inputs to schedules, risk registers, and resource planning; proactively manage technical risks.
  • Provide technical support through production launch and early field use, including evaluation of issues and implementation of design improvements.
  • Champion design-for-manufacture, design-for-assembly, and design-for-reliability practices throughout the product lifecycle.
  • Mentor junior engineers and contribute to continuous improvement of design and qualification processes, tools, and standards.
  • Makes improvement suggestions for department processes and procedures.
Required Education/Experience/Certifications
  • Bachelor’s degree in Mechanical, Aerospace, or related engineering discipline from an accredited program.
  • 5–8+ years of progressive product design and development experience, including direct responsibility for verification and qualification or certification testing in a regulated or standards-driven environment.
  • Demonstrated experience owning designs from concept through detailed design, prototype build, test, and transition to production, ideally within aerospace or highly regulated industries.
Benefits
  • Base Pay and Overtime Pay Eligible
  • Bonus Opportunity
  • Paid time off
  • 10 company holidays
  • Training & Development
  • Retirement Benefits – 401k matching
  • Tax-Advantaged Accounts
  • Medical, dental, vision coverage
  • Flexible Spending Account
  • Life Insurance
  • Parental Leave
  • Pet Insurance
  • Employee Assistance Program

Seniority level:
Mid-Senior level

Employment type:

Full-time

Job function:
Engineering and Information Technology

Industries:
Aviation and Aerospace Component Manufacturing

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