> Markdown version of [/jobs/ext/1473331-principal-mechanical-engineer-platform-integration](https://www.wearedevelopers.com/jobs/ext/1473331-principal-mechanical-engineer-platform-integration). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Mechanical Engineer, Platform Integration - **Company:** CHAOS Industries - **Location:** El Segundo, CA, United States - **Experience:** Expert - **Salary:** $175,000.0 - $215,000.0 - **Contract:** Permanent contract - **Skills:** 3d Models, Computer-Aided Design, Abaqus, Computational Fluid Dynamics, Configuration Management, Comsol Multiphysics, SolidWorks (CAD), Network Interface Controllers, Hardware Design, Hardware Interface Design, Nastran (Computer-Aided Design Software), Rapid Prototyping Process, Systems Integration, MIL-STD-810 Environmental Testing, Ansys - **Published:** July 28, 2026 - **Apply:** https://www.dice.com/job-detail/41f39fdd-ee46-45aa-965e-242de2d7454e ## About the Role * The position spans the full product lifecycle, from early concept development and architecture through detailed design, analysis, prototyping, qualification testing, production, and sustainment of fielded systems. * The ideal candidate has strong hands-on mechanical CAD and system integration experience, demonstrated prototyping skills, a deep understanding of ruggedized hardware design, and a proven ability to work independently and guide cross-disciplinary engineering efforts. * This is a full-time, on-site position in El Segundo, CA., * Bachelor's degree in Mechanical Engineering or a related discipline * 8+ years of progressively responsible experience in platform-level mechanical design and system integration for aerospace and defense applications * Proven experience integrating mechanical subsystems and mission systems into vehicles, mobile platforms, or fixed installations * Strong proficiency with CAD tools (e.g., SolidWorks or equivalent) for large assemblies and top-down design * Solid understanding of mechanical interfaces, tolerancing, alignment, installation practices, and interface control documents (ICDs) * Familiarity with structural analysis methods (hand calculations, FEA) * Familiarity with ruggedized military hardware and environmental qualification considerations * Experience interpreting and applying military standards, such as MIL-STD-810 and related platform qualification requirements * Demonstrated ability to lead technical decisions and resolve complex, cross-disciplinary integration challenges * Strong communication skills and ability to operate effectively in multi-project development environments * Ability to obtain and maintain a U.S. security clearance Preferred Requirements: * Master's degree in Mechanical Engineering or a related field * Prior experience serving as a mechanical technical authority on a program * Experience with mechanisms and actuation systems, including linkages, bearings, motors, hydraulics, and pneumatics, gimbals, or rotary joints * Experience with system-level requirements allocation * Familiarity with vehicle integration constraints, including shock, vibration, transport, and operational loads * Experience with at least one commercial FEA or multiphysics simulation package (NASTRAN, ABAQUS, ANSYS, CFD codes, COMSOL, etc.) * Knowledge of manufacturing and assembly processes for mobile or deployable mechanical structures and mechanisms * Experience with prototyping, additive manufacturing, CNC machining, and other fabrication techniques * Familiarity with military-style connectors (e.g., mil-circular 38999, ARINC, micro-D) ## Description * Provide technical leadership and hands-on prototyping and mechanical integration of mission systems: electronics, enclosures, effectors, launchers, mechanisms, and support equipment into ground- and sea-mobile platforms * Architect and design mechanical structures, frames, mounts, enclosures, and mechanisms subject to shock, vibration, thermal, and environmental constraints * Develop and maintain 3D CAD models, assemblies, and interface control documentation (ICDs) to support multi-disciplinary system integration * Perform first-order structural and thermal analyses and requirements allocations to ensure compliance with customer requirements and applicable military standards * Lead system-level integration, qualification, and acceptance activities, including oversight of installation, alignment, and fit-check efforts * Serve as a primary technical hardware interface with customers, platform providers, suppliers, and manufacturing partners. 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