Sr Mechanical Design Engineer
Bascom Hunter · O'Fallon, MO · 4 days ago
On-siteDesignFull-time
Responsibilities
- Lead the design of aerospace mechanical and electromechanical products from concept through production.
- Design rugged electronic enclosures, thermal management hardware, structural assemblies, and precision mechanical components.
- Perform engineering trade studies balancing performance, weight, manufacturability, reliability, and cost.
- Develop tolerance analyses, mechanical interfaces, fits, and assembly strategies.
- Perform structural analysis using Analytical calculations and FEA to evaluate stress, vibration, fatigue, thermal effects, and structural integrity.
- Develop margins of safety and correlate analytical models with test results.
- Evaluate materials, fasteners, sealing methods, and mechanical interfaces.
- Support all phases of product development including requirements, design reviews, detailed design, prototype builds, qualification testing, and production transition.
- Develop engineering documentation, manufacturing drawings, and design packages using SolidWorks and ASME Y14.5 GD&T.
- Support Engineering Change Notices (ECNs) and configuration management activities.
- Design products to meet military and aerospace environmental requirements including vibration, shock, thermal cycling, altitude, humidity, and corrosion.
- Integrate electronics, wiring, connectors, thermal management hardware, and mechanical structures into compact aerospace products.
- Incorporate design practices supporting EMI/EMC, grounding, shielding, environmental sealing, and thermal management.
- Support DFM/DFA activities, prototype builds, qualification testing, and production.
- Work with Manufacturing, Quality, Suppliers, and Test Engineering to resolve technical issues and improve product performance.
- Mentor junior engineers and support technical proposals and engineering estimates.
Requirements
- Bachelor's degree in Mechanical Engineering.
- Minimum 7 years of mechanical design experience developing aerospace, defense, or other high-reliability products.
- Experience designing complex mechanical or electromechanical assemblies from concept through production.
- Proficiency with SolidWorks (or equivalent 3D CAD) and ANSYS Mechanical (or equivalent FEA).
- Strong understanding of structural analysis, mechanics of materials, fatigue, vibration, tolerance analysis, materials, fasteners, and environmental sealing.
- Experience creating manufacturing drawings compliant with ASME Y14.5.
- Strong analytical, communication, and problem-solving skills.
- U.S. Citizenship required.
Preferred Qualifications
- Master's degree in Mechanical or Aerospace Engineering.
- Experience with rugged electronic packaging and aerospace enclosure design.
- Experience supporting MIL-STD-810, DO-160, or equivalent environmental qualification programs.
- Familiarity with EMI/EMC design practices, thermal management, pressure vessels, fluid systems, or refrigeration systems.
- Experience supporting prototype builds, qualification testing, and production transition.
- Experience with configuration management and engineering release processes.
Desired Characteristics
- Strong engineering judgment and hands-on problem-solving skills.
- Able to independently own mechanical work packages from concept through production.
- Effective collaboration across multidisciplinary engineering teams.
- Self-motivated with a commitment to technical excellence, quality, and continuous improvement.