Staff Engineer, Mass Properties - Ranger (R6353) (Aerospace)

Location: On-site in Seattle, Washington, United States

Salary: $170,000–$260,000 per year

Company

Venture-backed defense-tech organization developing intelligent autonomous systems, including autonomy software, aircraft, and simulation technologies.

What you will do

• Lead and participate in system-level trade studies covering payload, propulsion, power distribution, thermal management, and flight dynamics.
• Estimate, calculate, and verify weight, center of gravity, and inertia for components, assemblies, and complete aircraft systems across early design, prototyping, and production.
• Develop and refine mass-properties analysis tools, estimation methods, and optimization approaches.
• Generate and maintain mass-properties reports and databases tracking weight trends across vehicle programs.
• Implement and execute verification tests to validate design assumptions.
• Collaborate with aerodynamics, structures, avionics, propulsion, and manufacturing teams to control mass properties throughout development.

Requirements

• B.S. in Aerospace Engineering, Mechanical Engineering, Material Science/Engineering, or a related field.
• 3+ years of mass-properties analysis experience in aerospace, defense, or high-tech vehicle development.
• Proficiency with CAD software such as SolidWorks, Siemens NX, or similar.
• Familiarity with mass-properties industry standards, including ATA100, SAWE RP A-7, RP 7, RP 8, or predecessors.
• Experience defining mass-properties requirements and ensuring compliance across design iterations.
• Experience developing and maintaining a Mass Properties Management and Control Plan.
• Strong organizational skills and attention to detail.
• Offers are contingent on a cleared background and possible reference check.

Culture & Benefits

• Full-time regular employee package includes base pay within the listed range, bonus, benefits, and equity.
• Temporary employee package includes pay within the listed range and temporary benefits after 60 days of employment.
• Compensation considers skills, experience, licenses, certifications, and work location.
• Equal opportunity workplace with reasonable accommodation available for disabilities or special needs.
• Artificial intelligence tools may support parts of the hiring process, while final hiring decisions remain human.