Mechanical System Integration and Test Engineer

Manufacturing & Test Fixture Design

Design, release mechanical fixtures, wiring diagrams, automated High Voltage connections, etc. for automated end-of-line and functional circuit testers.

Design and build assembly fixtures for shock and vibration testing.

Design and build Ingress Protection (IP) test setups, dust chambers, spray/water-jet nozzles, immersion tanks, and enclosure mounting fixtures, per IEC 60529 test methods.

Mechanical Integration & Architecture

Create and maintain 3D system layouts, packaging studies, interface definitions, and 2D drawings

Track integration milestones (interface freeze, fixture readiness, first article build) and drive resolution of schedule risk.

Define and manage mechanical and packaging interfaces between subsystems, including enclosures, power electronics assemblies, busbars, cable routing, cooling systems, insulation, fasteners, and assembly hardware

Reliability & Environmental Test Development

Own the full test cycle for mechanical components: test plan, fixture/stand design, execution, data analysis, and report-out.

Develop physics-of-failure models for mechanical components, translating mechanical, thermal, and environmental stresses into expected degradation and lifetime, with defined acceleration factors and failure criteria.

Run IP, shock/vibration, and accelerated life testing hands-on, from bring-up through full test campaigns.

Define instrumentation and DAQ plans (thermocouples, strain gauges, accelerometers, load cells) for long-duration test campaigns.

Failure Analysis

Lead root cause analysis on mechanical failures (fasteners, seals, enclosures, structural elements), separating root cause from secondary damage.

Translate findings into design, material, or interface changes, and verify fixes through re-test.

This role owns the fixtures, test stands, and reliability data that decide whether a design is provable, buildable, and testable, with a seat at the table when architecture is still being decided. You are the person who makes sure interfaces between subsystems don't fall through the cracks, and who turns failure physics into real test setups rather than reaching for an off-the-shelf tester.

What You Will Bring

We prioritize first principles thinking, hands-on skill, and initiative over keywords. Domain-specific experience will help determine the career level for each hire.

Must-Have Requirements

Bachelor's degree in mechanical engineering, mechatronics, or similar.

3+ years of full-time industry experience designing mechanical fixtures, test hardware, or electro-mechanical assemblies.

Strong experience with 3D CAD (bonus for CATIA V6/3DX).

Experience designing fixtures or test setups for manufacturing, functional test, environmental sealing (IP ingress), or shock/vibration qualification.

Experience with reliability modeling (physics-of-failure, accelerated lifetime testing, or degradation modeling) and leading failure analysis on mechanical components.

Experience developing instrumentation and DAQ strategies for long-duration testing.

Experience defining and managing interfaces between mechanical and electrical subsystems (harnessing, connectors, fasteners, thermal interfaces).

Comfortable running hands-on test execution on hardware you build, not just handing it off to someone else.

Comfort influencing design decisions during early architecture phases and tracking integration milestones across a program.

Excellent communication skills, strong problem-solving skills, and attention to detail.

Scripting experience in Python or MATLAB for test automation and data analysis.

Nice-to-Haves

Experience with GD&T and tolerance analysis.

Experience facilitating DFMEAs.

Experience with creepage/clearance, grounding, insulation systems, and safety requirements.

Experience with thermal systems, including air or liquid cooling integration.

Experience with FEA or associated software (Ansys, SolidWorks Simulation, etc.).

Experience with product lifecycle management (PLM) and controlled release processes.

Experience with medium voltage (34.5kV) or grid-related products, such as converters, switchgear, circuit breakers, insulation, and shielding.