Simulation Software Engineer

Compensation $200K – $300K • ASI is dedicated to maintaining fair and equitable compensation practices. The salary range provided for this role reflects the minimum and maximum cash compensation targets for candidates across all U.S. locations and levels of expertise/experience. Additionally, all employees receive generous equity packages and have access to a comprehensive benefits offering. Actual compensation packages are determined based on relevant skills, experience, education and training. For more information, connect with the recruiting team or Hiring Manager during the process as they can provide more detailed information about the salary range based on the applicant’s position level and location within the overall range. About ASI is the frontier AI company that dynamically orchestrates critical infrastructure and defense assets, across air traffic control, energy, logistics, and combat operations. ASI's systems simulate physical operations, hours, days, and weeks ahead, so the people running air traffic control, the electric grid, and military operations can catch problems early and act before they spread. ASI is powering vital infrastructure for customers like United Airlines, National Grid, the Federal Aviation Administration, Delta Air Lines and the Department of War. ASI is headquartered in Boston with offices in Washington, DC, Denver, and Europe, and is backed by leading investors, including Andreessen Horowitz, Citadel Securities, and Spark Capital. About the Civil Aviation Team We are modernizing America’s air traffic control system on an accelerated timeline, tackling one of the world’s most complex real-time optimization challenges: safely coordinating tens of thousands of daily flights in a dynamic, safety-critical environment. Our team is building next-generation trajectory prediction and decision-support systems while preparing the airspace for emerging technologies like commercial space operations and advanced air mobility. This mission-critical work demands exceptional precision, resilience, and reliability to support the safety and efficiency of the national airspace. What You Will Do As a Simulation Software Engineer on the Civil Aviation team, you will create software simulators to model the behavior of the entire National Airspace System, including aircraft trajectories, weather, ATC and pilot behavior, etc. You will use your knowledge of discrete time simulation, physics, statistics, and algorithms to design and implement simulation infrastructure and models. What We Value

• Experience building infrastructure for discrete-time simulations

• Experience implementing physics-based models in discrete-time simulations

• Experience designing algorithms for mission-critical applications

• Experience with Monte Carlo analysis as a means to validate and tune algorithm performance

• Domain experience in aviation or related fields where physical systems are modeled and controlled

• Experience with modern programming languages such as Rust and Python

• Strong collaboration skills and comfort working across teams in a mission-critical environment.

• Proficient in leveraging modern LLM tools to accelerate development workflows and enhance code quality.

How We Hire We look at the interview process not as a screening or test, but rather as an opportunity to simulate what it would look like working together. We build the interview process around you. Eligibility ASI works with export-controlled technology and restricted U.S. Government data, including on contracts mandating U.S. immigration status and location restrictions for performing personnel. Employment offers are contingent on ability to timely obtain all required authorizations for contemplated job duties.