Senior Battery Mechanical Engineer

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

Benefits offered by this job

Medical, dental, and vision insurance

4 weeks paid vacation + 1-week year‑op

401K with 9.5% company contribution

Life/AD&D and disability insurance

Catered lunches and company events

Job summary

magniX is seeking a Senior Battery Mechanical Engineer in Everett, WA to lead mechanical design of lithium-ion battery packs for electric and hybrid-electric aerospace applications. You will integrate with magniX engineers and suppliers, developing modules, enclosures, and interfaces for aircraft installation.

You will ensure designs meet aerospace structural, thermal, vibration, and safety requirements, driving CAD work and testing plans while guiding certification and production-readiness

Qualifications

• Bachelor's degree in engineering required.
• 7+ years of EV battery pack design experience.
• Experience with 400V+ and 50kWh+ packs is preferred.

Responsibilities

• Lead mechanical design of lithium-ion battery packs for aerospace applications.
• Create and review CAD models for modules, enclosures, and mounting interfaces.
• Ensure designs meet aerospace structure, thermal, vibration, and safety requirements.
• Define pack requirements from system level to components with safety and certification in mind.
• Provide oversight to partners and suppliers for detailed pack design and manufacturing development.

Skills

EV battery design

High voltage packs

CAD design

Education

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

Tools

SolidWorks

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

Senior Battery Mechanical Engineer

Full Time Technical Everett, WA, US

9 days ago Requisition ID: 1109

Salary Range: $160,000.00 To $210,000.00 Annually

About magniX:Based in the beautiful Pacific Northwest, magniX builds solutions for the electric age, applying its aerospace-grade batteries, power electronics, power distribution, electric engines, and software to mission-critical applications across data centers, energy storage, defense, mobility, space, and aerospace. Built on an 800-volt architecture, magniX technology delivers industry-leading energy density, cycle life, and safety, and magniX electric engines have powered more than 200 flights across six different airframes, where the company remains the industry leader. As magniX extends its aerospace-grade standards into new markets, we are building a commercial organization to match, and are now ready to take our technology and products to market. Be part of a passionate team that is ushering in the electric age.

About the role:As a Senior Battery Mechanical Engineer at magniX, you will lead and contribute to the design, specification, and integration of advanced lithium-ion battery packs for electric and hybrid-electric aerospace applications. This role blends hands-on conceptual design with the technical leadership required to guide partners and suppliers through detailed development and industrialization.

Primary Responsibilities:

• Develop lithium-ion battery pack mechanical and structural packaging concepts in collaboration with magniX engineers and external suppliers.
• Perform CAD modeling of modules, pack enclosures, mounting systems, and aircraft installation interfaces.
• 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 individual components, considering aircraft integration, safety, and certification needs.
• Provide technical oversight and guidance to partners and suppliers responsible for detailed pack design and manufacturing development.
• Review design artifacts, analyses, engineering changes, and qualification plans to ensure alignment with magniX requirements.
• Contribute to program planning activities related to battery pack development, verification, production readiness, and industrialization.
• Participate in development of certification strategies and means of compliance for high-voltage battery systems.

Required Qualifications:

• Bachelor's degree in Electrical, Mechanical, or Chemical Engineering
• 7+ years of experience with EV lithium battery pack design
• Experience with high voltage and large size battery packs (400V+ and 50kWh+)

Preferred Qualifications:

• Experience with specification and procurement of battery pack components and material
• Experience with qualification strategy development and testing of battery packs, including thermal runaway containment
• Proficient in CAD design tools (preferably Solidworks)

Location:Applicants must be willing and able to commute to magniX's location in Everett, Washington.

• 100% company-paid premiums for medical, dental, and vision insurance (for employees & dependents).
• 4 weeks paid vacation + 1-week annual end-of-year shutdown, sick time, and 11 paid holidays.
• 401K retirement plan with industry leading 9.5% company contribution.
• Company paid Life insurance, AD&D, Short-Term and Long-Term disability insurance
• Catered lunches and quarterly company fun-day events!

Salary Range: $160-$210k

E-Verify: magniX utilizes E-Verify for employment eligibility verification

Pre-employment Screenings: Employment with magniX is contingent upon satisfactory completion of pre-employment requirements including a background screen.

Export Control Compliance:This position may require access to export-controlled data. To meet export control compliance requirements, candidates must be a "U.S. Person" (U.S. citizens, lawful permanent residents, refugees, or asylees), or an appropriate export authorization by the U.S. Government may be required prior to such access. Employment, and the continuity of employment of non-U.S. persons, is contingent upon the company’s ability to secure and maintain the necessary export control authorization.

EHS/Environmental Requirements:This job operates in a manufacturing and testing environment. While performing the duties of this job, the employee routinely is required to use hands to keyboard, communicate, listen to, and interpret instructions and remain stationary for extended periods of time. This would require the ability to move around the facility and occasionally move/lift items weighing up to 25 lbs. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of the job. Applicants are invited to apply for a reasonable accommodation to perform the essential duties of the job.

Required PPE (Personal Protective Equipment):Required PPE provided by magniX based on the employee’s position and exposure. Below are typical PPE used on the manufacturing and testing floor:

• Safety shoes
• Safety Glasses - Safety Goggles

Diversity and Inclusion: magniX is an equal opportunity employer. We value and embrace diversity. We do not discriminate on the basis of race, color, national origin, religion, gender, gender identity or expression, sexual orientation, marital status, age, or disability status.