Mass Properties Engineer – Lunar Transfer Stage

Jobtailor; Alabama; On-site; USD 120,000 - 180,000; Full time

Job summary

Jobtailor is seeking an experienced Mass Properties Engineer to own the Transfer Stage mass budget and manage CG, inertia, and mass data across design reviews. You will drive mass-trade studies, track propellant loading, and ensure traceability from assumptions to measurements while coordinating with subsystems across the vehicle.

Requirements include 5+ years in mass budgeting, CAD tool proficiency (CATIA/NX/SolidWorks/Creo), and strong communication skills. U.S.

Qualifications

• 5+ years of demonstrated ownership of mass budget.
• Ability to navigate and interpret subsystem detailed assemblies.
• Understanding of center of gravity, moments and products of inertia, and mass margin management.
• Proficiency with Python and/or MATLAB for data tracking, reduction, and reporting.

Responsibilities

• Maintain the MK1 Transfer Stage mass-properties model, keeping component mass, CG, and inertia data accurate and traceable.
• Support mass roll-ups and margin tracking against stage allocations.
• Flag mass growth trends to subsystem leads and program leadership.
• Reconcile predicted and measured mass properties and support root-cause investigations.
• Assist with stage- and vehicle-level CG and weighing operations, including test setup coordination and data analysis.
• Identify downstream consumers of mass-properties data and effective delivery methods.
• Track propellant loading and burn-state mass properties across mission phases.
• Generate status reports and present findings at design reviews, program milestones, and status meetings.
• Maintain configuration control of mass-properties documentation.
• Document assumptions, threats, methods, and uncertainty in mass estimates.
• Own the Transfer Stage mass budget and allocation flow-down to subsystems.
• Champion minimum-mass solutions across Fluids, Avionics, Thermal, GN&C, and Structures.
• Lead mass trade studies with manufacturing, balancing mass, cost, schedule, and producibility.
• Serve as responsible engineer for mass properties at program-gated reviews.
• Define uncertainty and margin methodology and set MGA policy by design maturity.

Skills

Mass Budget Ownership

CAD Tools Proficiency

Python Data Tracking

Center Of Gravity Understanding

Data Analysis

Propellant Loading Accounting

Education

B.S. in Aerospace/Mechanical Engineering

Tools

CATIA

NX

SolidWorks

Creo

Job description

Jobtailor is seeking an experienced Mass Properties Engineer to own the Transfer Stage mass budget and manage CG, inertia, and mass data across design reviews. You will drive mass-trade studies, track propellant loading, and ensure traceability from assumptions to measurements while coordinating with subsystems across the vehicle.

Requirements include 5+ years in mass budgeting, CAD tool proficiency (CATIA/NX/SolidWorks/Creo), and strong communication skills. U.S.