Mass Property Engineer

Position Summary:

As a Mass Properties Engineer, you will be responsible for the weight and balance management of our next-generation eVTOL aircraft. You will track, calculate, and optimize the mass properties (mass, CG, and moments of inertia) throughout the entire product lifecycle-from conceptual design to flight testing and certification. Your work is critical to ensuring the aircraft meets performance targets, safety requirements, and JCAB/FAA certification standards.

Key Responsibilities:

• Weight & Balance Management: Establish and maintain the aircraft’s mass properties database using PLM software and specialized weight management tools.
• Estimation & Analysis: Perform detailed weight estimations for primary structures, propulsion systems (batteries/motors), and avionics during the design phase.
• CG Control: Monitor Center of Gravity (CG) envelopes and provide design recommendations to engineering teams to ensure the aircraft remains within controllable limits.
• Inertia Calculations: Calculate and analyze Moments of Inertia (MOI) and Products of Inertia (POI) for flight dynamics modeling and control law development.
• Reporting: Generate Mass Properties Reports (MPR) for design reviews and regulatory compliance (e.g., SAWE RP8).
• Verification: Lead physical weighing activities of components, sub-assemblies, and the fully integrated aircraft to validate digital models.
• Optimization: Identify weight reduction opportunities and lead "weight sweeps" to improve the aircraft’s payload capacity and range.

Required Qualifications:

• 10+ years of experience in mass properties engineering within the aerospace industry.
• Proficiency in CAD software (CATIA V5, NX, or SolidWorks, etc.) to extract mass data.
• Experience with weight management software.
• Strong understanding of SAWE Recommended Practices.
• Proficiency in Excel/VBA, Python, or MATLAB for data analysis and automation.

Preferred Qualifications:

• Experience in eVTOL sector
• Experience with composite structures and high-voltage battery systems mass characteristics.
• Knowledge of certification processes.
• Experience in flight test support and actual aircraft weighing operations.

What We Offer:

• Strong communication skills to interact with design owners, systems engineers, manufacturing, and program management.
• High rigor, attention to detail, and ownership of integration issues.
• Ability to synthesize complex technical topics concisely. 
• Ability to work in fast-paced environments with evolving requirements.

Type of Employment

• Permanent Employee or Contract Employee
• Probationary period: 3 or 6 month

Place of Employment

• Nagoya Airport Office: Nagoya Airport Terminal Building 2nd floor, Toyoba, Toyoyama-Cho, Nishikasugai, Aichi Prefecture
  • Measures to Prevent Secondhand Smoke: Smoking Room Provided
• Scope of Change: Places determined by the Company (including places where telework is performed)

Working Hours

• Discretionary labor system
  • Discretionary Labor System: Specialized Class Deemed working hours per day: 10 hours
• Basic working hours: Start 9:00 End 18:00（Including 1hour break time）
  • Overtime Work: Available

Holidays

• 115 days off per year（Saturday / Sundays / Newyear holidays（12/29～1/3） / Company designated holidays）
• Annual paid leave
• Refresh leave (Granted after 1, 3, 4, 5 years of service)

Salary

• Estimated Annual Salary: JPY 7,000,000 - JPY 12,000,000
• Monthly Salary: JPY 584,000 - JPY 1,000,000
  • Includes fixed overtime pay for 45 hours, amounting to JPY 202,181 - JPY 346,205

    *Additional overtime pay will be provided for hours exceeding the fixed overtime.

• To be determined based on skills, experience, and abilities

Expenses

• Commuting allowance, business trip allowance, moving allowance, etc.
• Relocation Packages

  *There are some conditions.

Social Insurance

• Health insurance
• Employee pension (according to Japan standards)
• Employment insurance
• Worker’s accident compensation insurance

Scope of Work Change

• Reassignment may occur to any other work.