Senior Software Engineer, Simulation Platform

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century’s most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril’s family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and control center. As the world enters an era of strategic competition, Anduril is committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years.ABOUT THE TEAM The Simulation Platform team owns the core architecture and infrastructure of Anduril's high-fidelity, multi-domain military mission simulator. It models hundreds of entities--aircraft, ships, submarines, satellites, ground vehicles--moving, sensing, communicating, and engaging across realistic physical environments. The simulator powers training, mission planning, autonomy development, and hardware-in-the-loop testing across Anduril's product portfolio. It connects to live systems, integrates with Anduril's Lattice platform, and runs inside a GUI for interactive scenario authoring. Mission Sim is a large, mature C++20 codebase with an Entity-Component-System architecture, a stable C ABI plugin system, embedded scripting, and a variety of physics-based models. Keeping this system fast, correct, extensible, and pleasant to develop against at scale, with a growing team of model developers is our job.WHAT YOU'LL DOModel authoring tools — an early effort you will help stand up to extend the Sim frontend with UI for authoring and tuning Mission Sim models. You will negotiate extension APIs with the GUI team and build an ergonomic UI atop them, working alongside Simulation Modeling engineers.Custom Entity-Component-System architecture that underpins the entire simulator: entity lifecycle, component storage, and the update loopPlugin and SDK development - maintaining a versioned C ABI, which enables external teams to extend the simulatorPerformance and scale — keeping the simulation loop fast enough for real-time and faster-than-real-time execution with hundreds of concurrent entities; reasoning about memory layout, cache behavior and contention, as entity counts growIntegration architecture — gRPC services, DIS protocol interoperability, networking messaging, and file recording for analysis and playbackSupport domain experts in integrating new and enhancing existing capability modelsREQUIRED QUALIFICATIONS3 years of professional experience with C++20 and strong C++ skills; you should be comfortable with templates, move semantics, smart pointers, and the kinds of design decisions that show up in framework codeExperience designing internal APIs and frameworks that other engineers build on, with focus on backwards-compatibility and ergonomicsSolid understanding of systems programming fundamentals: memory management, shared libraries, ABI stability, linking, interfacing with the operating systemComfort with linear algebra and applied mathFamiliarity with Linux-based C++ development toolchainsAbility to reason about performance-sensitive code — cache behavior, memory layout, algorithmic complexityClear technical communication and ability to work in a large, shared codebase and negotiate architectural decisions that affect a growing teamEligibility to obtain and maintain an active U.S. Government Secret security clearancePREFERRED QUALIFICATIONS5+ years of professional experience with C++20Experience leading or mentoring engineers on a project — setting technical direction and bringing others alongComfort operating in ambiguity — scoping the problem, the approach, and the interfaces when none exist yet, and driving them to a decisionExperience with military simulation, defense modeling & simulation, or related domainsExperience with Entity-Component-System architectures or game engine design patternsExperience in designing and implementing GUI-supported workflowsFamiliarity with gRPC, DIS (IEEE 1278.1) distributed simulation standardExperience with Python/C++ interop (pybind11, embedded interpreters)Familiarity with behavior trees or autonomous agent architecturesDeveloping in NixExperience with numerical simulation, physics modeling, or scientific computingUS Salary Range$191,000—$253,000 USDThe salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. Highly competitive equity grants are included in the majority of full time offers; and are considered part of Anduril's total compensation package. Additionally, Anduril offers top-tier benefits for full-time employees, including: BenefitsAt Anduril, we invest in our people. Our comprehensive, competitive benefits package (available at little to no cost to employees) ensures you’re supported in health, recovery, and whatever comes next. For more information, Explore Our Benefits.Protecting Yourself from Recruitment ScamsAnduril is committed to maintaining the integrity of our Talent acquisition process and the security of our candidates. We've observed a rise in sophisticated phishing and fraudulent schemes where individuals impersonate Anduril representatives, luring job seekers with false interviews or job offers. These scammers often attempt to extract payment or sensitive personal information.To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind:No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process. Our legitimate recruitment is entirely free for candidates.Please always verify communications:Direct from Anduril: If you receive an email from one of our recruiters, it will only come from an @anduril.com address.Via Agency Partner: If contacted by a recruiting agency for an Anduril role, their email will clearly identify their agency. If you suspect any suspicious activity, please verify the agency's authenticity by reaching out to View email address on click.appcast.io. Exercise Caution with Unsolicited Outreach: If you receive any communication that appears suspicious, contains grammatical errors, or makes unusual requests, do not engage. Always confirm the sender's email domain is @anduril.com before providing any personal information or clicking on links.What to Do If You Suspect Fraud: Should you encounter any questionable or fraudulent outreach claiming to be from Anduril, please report it immediately to View email address on click.appcast.io. Your proactive caution is invaluable in protecting your personal information and upholding the security and trustworthiness of our recruitment efforts.Data PrivacyTo view Anduril's candidate data privacy policy, please visit . By submitting your application, you consent to Anduril Industries using a third-party service provider to conduct pre-employment risk, integrity, and due diligence screening and assessing potential risks as part of your application process. This third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. This third-party service provider does not act as a consumer reporting agency. Use of this provider helps to ensure compliance with applicable laws and protect technology, intellectual property, and organizational security.