Senior Software Engineer, Simulation Platform

Anduril-1; Seattle (WA); On-site; USD 191,000 - 253,000; Full time

Job summary

Anduril Industries, a defense technology company, seeks a Senior Software Engineer for the Simulation Platform in Seattle. You will contribute to a high-fidelity, ECS-based simulator that enables mission planning, autonomy development, and hardware-in-the-loop testing across platforms.

The role emphasizes C++20, performance optimization, API design, and integration with gRPC and DIS protocols. Collaboration with GUI and domain experts is essential in a fast-paced, security-conscious environment.

Qualifications

• 3 years of professional experience with C++20 and strong C++ skills, templates, move semantics and framework design.
• Experience designing internal APIs and frameworks with backward-compatibility and ergonomics.
• Solid understanding of memory management, shared libraries, ABI stability, linking, OS interfaces.
• Familiarity with Linux-based C++ development toolchains and performance-sensitive code.

Responsibilities

• Model authoring tools: help stand up UI for authoring and tuning Mission Sim models and extend extension APIs with GUI team.
• Maintain a custom ECS-backed simulator architecture and support entity lifecycle, storage, and update loop.
• Develop plugins and SDKs, preserving a versioned C ABI for external extensions.
• Keep the simulation loop fast for real-time and faster-than-real-time execution with many entities.
• Support integration with gRPC services, DIS interoperability, networking, and file recording for analysis.
• Assist domain experts in integrating and enhancing capability models.

Skills

C++20

Systems programming

API design

Linux

Performance optimization

Memory management

Code review

Tools

gRPC

DIS protocol

C ABI

pybind11

Job description

Senior Software Engineer, Simulation Platform

Seattle, Washington, United States

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 DO

• Model 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 loop


• Plugin and SDK development - maintaining a versioned C ABI, which enables external teams to extend the simulator


• Performance 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 grow


• Integration architecture - gRPC services, DIS protocol interoperability, networking messaging, and file recording for analysis and playback


• Support domain experts in integrating new and enhancing existing capability models

REQUIRED QUALIFICATIONS

• 3 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 code


• Experience designing internal APIs and frameworks that other engineers build on, with focus on backwards-compatibility and ergonomics


• Solid understanding of systems programming fundamentals: memory management, shared libraries, ABI stability, linking, interfacing with the operating system


• Comfort with linear algebra and applied math


• Familiarity with Linux-based C++ development toolchains


• Ability to reason about performance-sensitive code - cache behavior, memory layout, algorithmic complexity


• Clear technical communication and ability to work in a large, shared codebase and negotiate architectural decisions that affect a growing team


• Eligibility to obtain and maintain an active U.S. Government Secret security clearance

PREFERRED QUALIFICATIONS

• 5+ years of professional experience with C++20


• Experience leading or mentoring engineers on a project - setting technical direction and bringing others along


• Comfort operating in ambiguity - scoping the problem, the approach, and the interfaces when none exist yet, and driving them to a decision


• Experience with military simulation, defense modeling & simulation, or related domains


• Experience with Entity-Component-System architectures or game engine design patterns


• Experience in designing and implementing GUI-supported workflows


• Familiarity with gRPC, DIS (IEEE 1278.1) distributed simulation standard


• Experience with Python/C++ interop (pybind11, embedded interpreters)


• Familiarity with behavior trees or autonomous agent architectures


• Developing in Nix


• Experience with numerical simulation, physics modeling, or scientific computing

US Salary Range

$191,000 - $253,000 USD

The 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:

At 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 .

As set forth in Anduril Industries’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.