Soma Capital Portfolio Jobs

Simulation Software Engineer



Software Engineering
San Francisco, CA, USA
Posted on Saturday, January 20, 2024

Astranis is on a mission to bridge the digital divide by connecting the four billion people worldwide who currently lack internet access. We're doing this by building the next generation of smaller, more cost-effective spacecraft to bring the world online.

As a team, we’ve launched two satellites into orbit, signed ten commercial deals worth over $1 billion in revenue, raised over $500 million from top global investors, and recruited a team of over 300 world-class engineers. We all work out of our (legendary) San Francisco office, which was once used to build ships during the World Wars.

Our satellites, which operate from geostationary orbit (GEO), weigh only 400 kg and utilize a proprietary software-defined radio payload. Each satellite can connect over two million people, and we’re very excited for the impact we’ll soon have in the Philippines, Peru, Mexico, and more!

Backed by substantial funding and a passionate, collaborative team, we offer a rewarding work environment where you'll learn and make a significant impact, no matter where you are in your career.

Apply and join us on our journey towards global connectivity!

Simulation Software Engineer

As our Simulation Software Engineer, you will design, develop, and test our high-fidelity spacecraft simulation that is used to validate the software that controls our satellites while in orbit.

You will improve the core simulation infrastructure and collaborate with engineering teams across the company to model new systems and add interesting new features to the simulator.


  • Design, develop, and maintain software for our high-fidelity software simulation platform
  • Implement and improve software- and hardware-in-the-loop simulations to validate satellite software and flight algorithms
  • Accelerate the software development process through infrastructure improvements
  • Develop and enhance Monte Carlo simulation tooling for assessing system performance under various conditions
  • Incorporate physics-based models into simulation
  • Develop analysis and visualization tooling to provide insight into our system
  • Support in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team


  • BS or MS in Computer Science, Aerospace Engineering, or equivalent background experience
  • Strong programming skills with expertise in C/C++, Python, or other high-level object-oriented programming language(s)
  • Experience building simulations of complex physical systems
  • Ability to effectively collaborate with interdisciplinary teams on large software projects
  • Strong problem-solving skills and attention to detail
  • Highly motivated, self-starting, and able to perform duties autonomously without much supervision
  • Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria.


  • Understanding of classical or modern control theory, and basic orbital mechanics
  • Knowledge of memory management, threading, and interprocess communication techniques
  • Experience building and maintaining software infrastructure used across teams
  • Experience in statistical analysis techniques and Monte Carlo simulation
  • Experience with databases
  • Experience with JavaScript (React, Angular, or similar framework)
  • Experience with spacecraft design
All our positions offer a compensation package that includes equity, robust benefits, and bonuses.

What we offer:
Base pay is a single component of Astranis's total rewards package, which may also include equity in the form of incentive stock options, performance bonuses, high quality company-subsidized healthcare, disability and life insurance benefits, flexible PTO, 401(K) retirement, and free on-site catered meals.
Astranis pay ranges are informed and defined through professional-grade salary surveys and compensation data sources. The actual base salary offered to a successful candidate will additionally be influenced by a variety of factors including experience, credentials & certifications, educational attainment, skill level requirements, and the level and scope of the position.
Base Salary
$125,000$160,000 USD
U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required
(To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States, or other protected individual as defined by 8 U.S.C. 1324b(a)(3))
Our mission and our products are meant to connect the world and everyone in it, regardless of gender, race, creed, or any other distinction. We believe in a diverse and inclusive workplace, and we encourage all people to join our team and bring their unique perspective to help make us stronger.