Mass Properties and Integration Systems Engineer - Lunar Permanence

Application close date:
Applications will be accepted on an ongoing basis until the requisition is closed.

At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We're working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight!

This role is part of the Lunar Permanence business unit, which develops Blue Origin's Blue Moon landers and related products. To further Blue Origin's mission of millions of people living and working in space for the benefit of Earth, we are building sustainable infrastructure for our transport of crew and cargo from Earth to the lunar surface.

We are looking for a Systems Engineer III to support mass properties engineering for the Mk1 Transfer Stage. This role owns the day-to-day maintenance and analysis of the mass-properties Bill of Materials (BOM), supports mass property predictions and tracking across the vehicle lifecycle. You'll work closely with design, manufacturing, integration, and test teams to ensure the vehicle's mass, center of gravity, and moments of inertia are understood, tracked, and reported accurately at every program milestone.

Mass properties data underpins nearly every other engineering discipline on the vehicle - from structural margins to guidance and control to propellant budgeting. As a Systems Engineer II on this team, you won't just track mass - you'll actively work with Fluids, Avionics, Thermal, GN&C, and Structures to find where mass can come out of the vehicle, and partner with manufacturing on trades that balance metrics for the best cost to performance ratio for our customers.

Your work directly supports program-level decisions and keeps the vehicle within its mass and CG requirements throughout design, build, and test.

Beyond tracking and reporting, this role is expected to dig into subsystem designs to find and drive mass reduction opportunities. You'll build close working partnerships with system leads championing minimum-mass solutions and partnering with manufacturing teams on trade studies that balance mass, cost, and producibility.

This is a strong fit for an engineer who wants hands-on ownership of a critical vehicle integration discipline, is comfortable getting into the design weeds with other subsystems, and enjoys cross-functional collaboration, hardware exposure, and design reviews.

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

• 5+ years of demonstrated ownership of mass budget
• Working proficiency with CAD tools (CATIA, NX, Solid Works, or Creo), able to navigate and interpret subsystem detailed assemblies
• Demonstrated understanding of center of gravity, moments and products of inertia, and mas margin management
• Proficiency with Python and/or MATLAB for data tracking, reduction, and reporting
• Ability to earn trust, maintain positive and professional relationships, and give to a culture of inclusion.
• Excellent written and oral communication skills.
• Minimum of a B.S. degree in Aerospace Engineering, Mechanical Engineering or related engineering discipline
• Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

• Experience with BOM-based mass properties tracking on a flight vehicle or spacecraft
• Familiarity with rendezvous, proximity…