Game Engine Engineer, Battle Road

About Onebrief

Onebrief is collaboration and AI-powered workflow software designed specifically for military staffs. By transforming this work, Onebrief makes the staff as a whole superhuman - meaning faster, smarter, and more efficient.

We take ownership, seek excellence, and play to win with the seriousness and camaraderie of an Olympic team. Onebrief operates as an all-remote company, though many of our employees work alongside our customers at military commands around the world.

Founded in 2019 by a group of experienced planners, today, Onebrief’s team spans veterans from all forces and global organizations, and technologists from leading-edge software companies. We’ve raised $320m+ from top-tier investors, including Battery Ventures, General Catalyst, Sapphire Ventures, Insight Partners, and Human Capital, and today, Onebrief is valued at $2.15B. With this continued growth, Onebrief is able to make an impact where it matters most.

Battle Road Digital, part of Onebrief, applies state-of-the-art innovations and experience from the video game industry to build the future of simulations, modeling, and operations with AtomEngine – our proprietary cloud-based game engine that’s making the world playable.

About the Role

We are looking for a Game Engine Engineer who can operate comfortably across engine subsystems, reason about performance and scale, and conceive and develop thoughtful abstractions.

The Game Engine Engineer implements, and evolves the core systems that power AtomEngine, our proprietary cloud-based game engine for large-scale simulation and modeling. Operating at the foundation of the platform, this role works across engine subsystems to ensure performance, scalability, and correctness as simulation complexity grows, developing and refining engine-level abstractions that support complex entities, behaviors, environments, and runtime systems.

Successful candidates are systems-minded engineers comfortable working near the engine core, navigating ambiguity, and applying strong technical judgment to build clean, composable, and durable foundations rather than one-off solutions.

What You'll Do

• Design, implement, and evolve core engine systems that power the AtomEngine runtime and editor.

• Design, build, and maintain complex, reusable engine systems and tools that form the foundation of AtomEngine.

• Analyze and lead efforts to improve performance, scalability, and stability across the engine and its dependent systems.

• Balance short-term delivery needs with long-term architectural clarity and maintainability

• Collaborate closely with simulation engineers, tools developers, and AI engineers to integrate engine capabilities into higher-level systems

• Contribute to code quality, technical standards, and best practices across the engine codebase

• Identify technical risks and propose pragmatic solutions that preserve system integrity while maintaining development velocity

What We Look For

• 3+ years of software engineering experience, with a history of shipping games working across subject areas

• Familiarity with popular game engines (Godot, Unity, Unreal)

• Strong knowledge of standard engineering practices and a high bar for quality

• Due to federal contract requirements, U.S. Citizenship is mandatory for this position.

Notice to Third Party Recruitment Agencies
Please note that Onebrief does not accept unsolicited resumes from recruiters or employment agencies. In the absence of an executed Recruitment Services Agreement, there will be no obligation to any referral compensation or recruiter fee. In the event a recruiter or agency submits a resume or candidate without an agreement Onebrief explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency. Any unsolicited resumes, including those submitted to hiring managers, shall be deemed the property of Onebrief.