Giant Army is looking for a physics developer to join our team. You will work with our senior physics developer, team scientists, and other developers to add the necessary physics and simulation code to bring realistic, sandbox-style spaceships to Universe Sandbox.

This is a full-time, remote position.

Join us. We’re making something incredible that’s unlike anything else.

Your Role

  • Develop rigid body simulation within our existing custom physics engine (we do not and cannot use Unity’s built-in physics)
  • Build upon the rigid body simulation and innovate with spaceship features such as:
    • Thrusters
    • Data-driven historical simulations (Cassini, Voyager, etc.)
    • Modular spaceship parts
    • Destruction of spacecraft from heating, lasers, and collisions (both from other spacecraft and asteroids/planets/moons)
    • Integration with our planned megastructures/tethers feature


  • (Strong C# && Unity Engine experience) || (Experience with an entity component model && object-oriented programing)
  • Experience with physics engine development
  • Familiar with version control (we use GitHub), task-management systems (we use GitHub+ZenHub), unit tests, code reviews, and so forth
  • Self-driven; comfortable working collaboratively and remotely
  • Appreciation for, and focus on, realism and detail
  • Passion for science, astronomy, spaceships, and real-time interactive simulations
  • Love of fantastical what-if scenarios: (note citation #6 on 148)

Company Overview

Giant Army is the company behind Universe Sandbox. Our headquarters are in Seattle, Washington, USA, with team members across the United States, Germany, and Denmark.

Team members enjoy a flexible, collaborative environment. We strive for work-life balance, and we pursue the features that get us excited about science. We do the work so we can share it with others. We’re committed to creating an accessible experience that can’t be found elsewhere.

Science is for everyone, and we welcome all qualified applicants.

Product Overview

Universe Sandbox is a space simulator that merges real-time gravity, climate, collision, and physical interactions to reveal the beauty of our universe and the fragility of our planet. It’s more than a game; it’s a way of experiencing and learning about reality in a way that’s never been done before.

Universe Sandbox is available on Windows, Mac, Linux, and VR with mobile and future platforms planned. We’ve sold nearly half a million copies and have a “Very Positive” rating on Steam with 93% positive user reviews.

How to Apply

Apply here

Resume and code sample required. Please either upload or include links.