Senior CAD Integration Engineer — CATIA & Large-Assembly

Mainspring Energy, Inc.; Menlo Park (CA); On-site; USD 130,000 - 153,000; Full time

Job summary

Mainspring Energy, Inc. in Menlo Park, CA seeks a Senior Product Integration Engineer (CAD) to own the integrated CAD definition as designs evolve. You will unify subsystem CAD into authoritative CATIA assemblies and ensure cohesive product integration across engineering teams.

Strong 3D CAD experience, packaging/interface problem solving, and cross-team collaboration are essential for this hands-on role.

Qualifications

• BS in Mechanical Engineering, Product Design, or a related technical field, or equivalent relevant experience
• 5+ years of experience in mechanical CAD, product design, packaging, product integration, or complex equipment design
• Advanced proficiency with CATIA, NX, Creo, SolidWorks, or another advanced 3D CAD platform; strong CATIA experience is highly preferred
• Demonstrated experience building and maintaining large, complex, multi-subsystem assemblies with disciplined reference and configuration practices
• Strong mechanical intuition and ability to identify packaging, clearance, routing, serviceability, assembly, and interface issues from 3D CAD
• Strong understanding of mechanical interfaces, drawings, GD&T, BOMs, revisions, and engineering change workflows
• Ability to communicate spatial and interface problems clearly and collaborate with engineers from multiple subsystem teams
• Detail-oriented, organized, and comfortable coordinating multiple design changes that affect interfacing hardware

Responsibilities

• Build, maintain, and continuously improve authoritative POR and future-state reference assemblies for the Linear Generator
• Integrate subsystem CAD from multiple Design Engineering teams into full-product CATIA assemblies and keep those assemblies current as engineering changes progress
• Maintain clean full-product CAD structure, references, interfaces, metadata, and configuration logic across major assemblies
• Perform packaging studies, interference checks, clearance reviews, routing studies, service-access checks, and assembly-access evaluations
• Identify conflicting space claims and work with Design Engineers to negotiate interfaces and converge on practical whole-product solutions
• Create and maintain reference geometry, interface geometry, envelopes, simplified models, and other integration artifacts needed to support cross-team design work
• Support design reviews with clear visualizations of clashes, interfaces, access constraints, and product-level integration risks
• Identify and resolve inconsistencies among integrated CAD, drawings, EBOM structure, and the intended product configuration before release
• Support Product Release and Configuration Management by providing a clear, traceable digital definition of the product state being released
• Help establish scalable methods and standards for CATIA, large-assembly performance, imported geometry, simplification, reference assemblies, and cross-CAD workflows

Skills

Mechanical CAD

Product design

Packaging

Product integration

Complex equipment design

Mechanical intuition

GD&T understanding

Education

BS in Mechanical Engineering

BS in Product Design

Equivalent experience

Tools

CATIA

NX

Creo

SolidWorks

3D CAD platforms

Job description

Mainspring Energy, Inc. in Menlo Park, CA seeks a Senior Product Integration Engineer (CAD) to own the integrated CAD definition as designs evolve. You will unify subsystem CAD into authoritative CATIA assemblies and ensure cohesive product integration across engineering teams.

Strong 3D CAD experience, packaging/interface problem solving, and cross-team collaboration are essential for this hands-on role.