Software Engineer I,II,III: Simulations

Build and extend the mission simulation environment that Lodestar's autonomy stack is developed and validated against

Develop high-fidelity sensor and environment models - electro-optical cameras, orbital lighting and illumination

Build software-in-the-loop and hardware-in-the-loop test benches so that flight software can be trialed against realistic simulated missions

Design distributed simulation services to run mission scenarios at scale

Own the internal simulation tooling, telemetry, and regression frameworks

0–2 years of professional experience in simulation, robotics, games. Can also include Internships and research placements.

Working proficiency in C++ and Python

Exposure to ROS 2 in an academic, research, or professional setting

Understanding of multithreading fundamentals - threads, synchronization primitives, race conditions

Familiarity with 3D game engines (Unreal Engine or Unity) or comparable physics and graphics simulation tooling

Comfortable developing in Linux and with containerised workflows (Docker)

2–5 years of industry experience building simulation, robotics, or games.

Strong modern C++ (C++17 or later) alongside Python

Production experience with ROS 2 - node design, DDS middleware, message passing, launch and configuration management

Hands-on SIL and/or HIL experience: building test harnesses and integrating real vehicle or flight software against simulated sensors and actuators

Experience with Unreal Engine for sensor or environment simulation, or equivalent depth in Unity, Isaac Sim, or Gazebo

Experience designing distributed services - inter-process communication, message transport, and orchestration across multiple machines

Demonstrated multithreaded and concurrent programming in a real-time or soft-real-time context

6+ years of industry experience, including end-to-end ownership of a simulation stack or a major simulation subsystem

Track record architecting simulation infrastructure - deciding what to model at what fidelity, and defending those trade-offs to engineering stakeholders

Depth in real-time distributed system design: determinism, time synchronisation, clock management, and reproducibility across nodes

Experience standing up HIL benches or SIL pipelines from scratch, including CI integration and automated regression testing

Experience mentoring engineers and setting technical direction across team boundaries

Comfortable deriving requirements from first principles

Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision and dental coverage , as well as access to a 401(k) retirement plan .

Lodestar is an Equal Opportunity Employer; employment with Lodestar is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.