Relativity Space

Senior Simulation and Modeling Engineer

Relativity Space$148K — $203K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's, Master's, or PhD in engineering, physics, mathematics, or related field
  • 5+ years of relevant full-time work experience
  • Proficient in C++, Rust, and Python programming languages
  • Experience in developing physics-based aerospace vehicle simulations
  • Ability to thrive in a fast-paced startup environment
  • Demonstrated ownership of end-to-end project solutions

Responsibilities

  • Contribute to the 6DOF simulation for GNC algorithm development
  • Collaborate with analysis and hardware teams for subsystem model integration
  • Implement numerical solvers and physics models
  • Develop simulation configuration, scheduling, logging, and Monte Carlo capabilities
  • Create interfaces between simulations and GNC algorithms
  • Maintain and enhance the simulation environment for users
  • Support cross-functional software package development

Benefits

  • Competitive salary and equity
  • Generous PTO and sick leave
  • Parental leave
  • Annual learning and development stipend
Full Job Description
About the Team:

The Guidance, Navigation, and Control (GNC) and Performance teams are responsible for defining and analyzing how Terran R flies, from liftoff to landing. The work combines a variety of disciplines such as advanced modeling, orbital mechanics, software development, and dynamic systems to optimize every phase of flight. You'll develop flight algorithms, simulate trajectories, and model Terran R's dynamic behavior across mission profiles. Whether you're early in your career or a seasoned expert, you'll have the opportunity to own critical pieces of the system, influence design, and see your work fly. The department is part of the Integrated Performance team, uniting key disciplines to drive performance at every stage of the mission.

About the Role:
  • You will be a key contributor to the 6DOF simulation used for GNC algorithm development, Monte Carlo analysis, and hardware-in-the-loop (HITL) testing
  • Work with analysis and hardware teams to develop and integrate subsystem models into the 6DOF simulation
  • Implement numerical solvers and physics models
  • Develop simulation configuration, scheduling, logging, and Monte Carlo capabilities
  • Develop simulation interfaces with GNC algorithms
  • Maintain and improve the development environment for simulation users
  • Contribute to other cross-functional software packages at Relativity

About You:
  • An undergraduate or graduate degree (BS/MS/PhD) in engineering, physics, mathematics or related disciplines
  • 5+ years of relevant full-time work experience
  • Proficiency with compiled (e.g. C++, Rust) and scripted (e.g. Python) languages
  • Experience developing physics-based simulations of aerospace vehicles
  • Ability to work in a fast paced and intense startup environment
  • Ability to complete projects with ownership of end-to-end solutions with a high degree of independence

Nice to haves but not required:
  • Familiarity with the design and analysis of launch vehicles or space systems
  • Experience developing aerospace vehicle simulations that interface with GNC algorithms and/or hardware-in-the-loop (HITL) testing
  • Experience implementing high-performance computing (HPC) solutions
  • Experience implementing software development practices and workflows such as Docker, continuous integration (CI), and continuous deployment (CD)


At Relativity Space, we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience, qualifications, and other job-related factors.

Compensation is only one part of our total rewards package. Relativity Space offers competitive salary and equity, a generous PTO and sick leave policy, parental leave, an annual learning and development stipend, and more! To see some of the benefits & perks we offer, please visit here.

Hiring Range:

$148,000-$203,500 USD

About Relativity Space

Relativity Space is an American aerospace manufacturer that is developing 3D printed rockets. The company was founded in 2015 by Tim Ellis and Jordan Noone, and is headquartered in Los Angeles, California. Relativity Space's goal is to reduce the cost and time required to produce rockets by using 3D printing technology. The company's rockets are designed to be fully reusable, which could significantly reduce the cost of space launches. Relativity Space has received funding from a number of investors, including Mark Cuban and Playground Global.
Learn more about Relativity Space
Size
200 employees
Industry
Founded
2016

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