Frontend Engineer

Compensation $170K – $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 part of our product engineering team, you'll work closely with our civil aviation and design teams to create mission-critical products with a top-notch user experience. You'll work on systems that reflect the real-world intricacies of air operations and build new user-facing features in React, Redux, Mapbox, and TypeScript, with everything from database models to APIs. What We Value

• Proficiency in JavaScript/TypeScript, React, and CSS.

• Experience building complex, map-based web applications with Mapbox, Maplibre, or Google Maps, with a focus on real-time rendering of multiple interactive features and overlays.

• Familiarity with WebGL, WebGPU, or ThreeJS for accelerated graphics rendering and WebAssembly (WASM) for enhancing application performance.

• A bias for action. When you see a problem, you solve it.

• Ability to write fast, efficient, and maintainable code.

• Strong attention to detail and a passion for great user experiences.

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