Software Engineer II, Spacecraft Simulation

True Anomaly, Inc.; Denver (CO); On-site; USD 90,000 - 150,000; Full time

Benefits offered by this job

Healthcare

Flexible time off

Lunch and snacks

401(k)

Equity

Dog Fridays

Job summary

True Anomaly, Inc. is hiring a Spacecraft Simulation Software Engineer to build high-fidelity, multi-physics software for spacecraft modeling and mission analysis.

You will contribute to 6DOF dynamics, thermal, and propulsion simulations, collaborating with engineers across teams to validate control algorithms and predict mission outcomes. The role requires strong C++ skills (C++17/20) and Python scripting, with a focus on performance, reliability, and real-time capabilities.

Qualifications

• Bachelor's degree in aerospace, mechanical, CS, physics, or related field.
• 1-3 years of professional C++ experience.
• Experience with Python for scripting and prototyping.
• Strong object-oriented software development practices.
• U.S. Citizen and eligible for DoD clearance.

Responsibilities

• Write well-structured, efficient code using modern C++ (C++17/20), focusing on performance.
• Develop and maintain multi-physics simulation libraries for spacecraft systems modeling.
• Implement coupled physics algorithms capturing interactions between subsystems.
• Design time-stepping algorithms, solver architectures, and integration schemes for real-time simulations.
• Maintain libraries with Python and C++ APIs for internal use at True Anomaly.
• Collaborate with internal teams to plan and execute missions and analyses.
• Participate in code reviews and architectural discussions to uphold standards.

Skills

C++

Python

OO design

Education

Bachelor's degree

Tools

Git

CI/CD pipelines

Job description

Software Engineer II, Spacecraft Simulation

Denver, CO or Long Beach, CA

Space is a warfighting domain. True Anomaly seeks those with the talent and ambition to build the technology that secures it.

OUR MISSION

True Anomaly delivers decisive capabilities for space superiority. We build autonomous spacecraft, advanced payloads, mission software, and space-based interceptors — enabling the U.S. and its Allies to secure the space environment and counter threats from the ultimate high ground.

OUR VALUES

• Be the offset.We create asymmetric advantages with creativity and ingenuity.
• What would it take?We challenge assumptions to deliver ambitious results.
• It’s the people. Our team is our competitive advantage and we are better together.

BENEFITS & PERKS *

• Best-in-class healthcare: 100% company-paid medical, dental, and vision coverage for you and your dependents, with HSA/HRA options
• Generous time off: Flexible Time Off (FTO) for exempt employees, accrued PTO of up to 25 days for non-exempt employees, plus 12 paid holidays; Parental Leave; Sick Leave
• Fuel for your day: Daily catered lunch and unlimited snacks for in-office employees
• And more: 401(k) retirement plan, fitness reimbursement, and Dog Fridays
• Equity participation: Equity is included as part of our total compensation package, giving you an opportunity to share in the company’s success.

*Do not apply to fixed term and temporary roles

YOUR MISSION

Software is the central nervous system for True Anomaly's engineering and product thesis. Software bridges the gap between military objectives, theoretical physics, and the human and autonomous control of spacecraft and ground systems. True Anomaly is seeking a Spacecraft Simulation Software Engineer to contribute to the continuing evolution of our spacecraft, constellation modeling, and simulation software with a focus on multi-physics, high-fidelity simulation.

You will work in a fast-paced, interdisciplinary team to identify, develop, and deliver algorithms for modeling complex coupled physics including 6-degree-of-freedom (6DOF) rigid body dynamics, thermal systems, attitude dynamics and control, power systems, propulsion, and their interactions. This role focuses on building the simulation infrastructure that enables engineers to design spacecraft, validate control algorithms, analyze system performance, and predict mission outcomes with high confidence.

RESPONSIBILITIES

• Write well-structured, efficient code using modern C++ best practices (C++ 17 / C++ 20), with a particular emphasis on performance and maintainability
• Develop and maintain multi-physics simulation libraries for spacecraft systems modeling including:
  • 6DOF rigid body dynamics with environmental perturbations (gravity gradient, solar radiation pressure, atmospheric drag, magnetic torques)
  • Thermal modeling including conduction, radiation, and solar heating
  • Attitude dynamics and control system simulation
  • Propulsion system modeling (thrusters, tanks, mass properties)
  • Power generation and distribution (solar arrays, batteries, loads)
  • Sensor and actuator models (reaction wheels, star trackers, gyros, magnetometers, thrusters)
• Implement coupled physics algorithms that capture interactions between subsystems (thermal-structural, power-thermal, propulsion-dynamics, etc.)
• Design and implement time-stepping algorithms, solver architectures, and integration schemes for real-time and faster-than-real-time simulation
• Maintain libraries that provide APIs in multiple languages (Python, C++) to other applications within True Anomaly
• Work with other internal teams who leverage our simulation APIs to plan and execute missions, develop advanced algorithms for spacecraft operation, and perform trade-space analyses
• Participate in code reviews, architectural discussions, and sprint planning sessions to maintain high standards of software quality and adherence to project timelines

QUALIFICATIONS

• Bachelor's degree in aerospace engineering, mechanical engineering, computer science, physics, a similar discipline, or relevant experience
• 1-3 years of professional experience in C++
• Experience with the Python programming language for scripting and prototyping applications
• Strong understanding of object-oriented software development practices
• Ability to understand new challenges quickly, formulate a plan, get buy-in, and execute
• Understanding of complex distributed systems, and how the components you design and deliver will fit into those larger systems
• Excellent problem-solving skills and attention to detail
• U.S. Citizen and eligible for DoD Secret or TS/SCI clearance

PREFERRED SKILLS AND EXPERIENCE

• Experience developing physics-based modeling and simulation environments (i.e., modeling spacecraft dynamics, thermal systems, or control algorithms)
• Knowledge of numerical methods:
  • ODE solvers and integration schemes (Runge-Kutta, etc.)
  • Numerical linear algebra and matrix computations
  • Sparse matrix techniques
• Experience with spacecraft subsystems:
  • Attitude determination and control systems (ADCS)
  • Guidance, navigation, and control (GNC)
  • Thermal control systems
  • Electric power systems (EPS)
  • Propulsion systems
• Understanding of coordinate frames and transformations (ECI, ECEF, body frame, etc.)
• Experience with quaternion mathematics and rotation representations
• Knowledge of orbital mechanics and perturbation forces
• Familiarity with model validation, verification, and uncertainty quantification
• Experience with version control systems (Git) and CI/CD pipelines

COMPENSATION

• Equity + Benefits including Health, Dental, Vision, HRA/HSA options, PTO and paid holidays, 401K, Parental Leave

Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, location, and experience.

ADDITIONAL REQUIREMENTS

• Work Location—This is a fully onsite role. Candidates must be based in or able to commute to our Denver or Long Beach office daily.
• Work environment—the work environment; temperature, noise level, inside or outside, or other factors that will affect the person's working conditions while performing the job.
• Physical demands—the physical demands of the job, including bending, sitting, lifting and driving.

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

True Anomaly is committed to equal employment opportunity on any basis protected by applicable state and federal laws. If you have a disability or additional need that requires accommodation, please do not hesitate to let us know.

As set forth in True Anomaly’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.