Senior Battery Pack Mechanical Engineer, Aerospace

magniX; Everett (WA); On-site; USD 160,000 - 210,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401K with company match

Paid vacation & holidays

Company events

Job summary

magniX in Everett, Washington is seeking a Senior Battery Mechanical Engineer to lead the design, specification, and integration of lithium-ion battery packs for aerospace applications. You will bridge hands-on concepts with technical leadership, guiding partners through development and industrialization while ensuring aviation-grade safety and certification readiness.

The role emphasizes mechanical packaging, CAD modeling, test planning, and collaboration with suppliers to deliver robust

Qualifications

• 7+ years of EV lithium battery pack design experience.
• Experience with high voltage (400V+) and large packs (50kWh+).
• Strong CAD skills and supplier collaboration.

Responsibilities

• Develop battery pack mechanical packaging concepts with suppliers.
• Perform CAD modeling of modules, enclosures, mounting systems.
• Ensure designs meet aerospace structural, thermal, vibration, and safety requirements.
• Thermal runaway containment strategy design and development
• Define and execute test plans for battery module mechanical testing, including thermal runaway propagation and containment, structural performance, and environmental testing.
• Define battery pack requirements from the system level down to components for integration and certification.
• Provide technical oversight to partners and suppliers for detailed pack design and manufacturing development.
• Review design artifacts, analyses, changes, and qualification plans for magniX alignment.
• Contribute to program planning for battery pack development, verification, production readiness, and industrialization.
• Develop certification strategies and means of compliance for high-voltage battery systems.

Skills

Battery design experience

Education

Bachelor’s degree in Electrical, Mechanical, or Chemical Engineering

Tools

SolidWorks

Job description

magniX in Everett, Washington is seeking a Senior Battery Mechanical Engineer to lead the design, specification, and integration of lithium-ion battery packs for aerospace applications. You will bridge hands-on concepts with technical leadership, guiding partners through development and industrialization while ensuring aviation-grade safety and certification readiness.

The role emphasizes mechanical packaging, CAD modeling, test planning, and collaboration with suppliers to deliver robust