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 As a Staff Game Engine Engineer, you'll play a critical role in shaping the technical direction of AtomEngine, our scalable cloud-based simulation and modeling platform. You will serve as a technical leader for the engine team, driving architectural decisions, establishing engineering standards, and guiding the evolution of the core platform that enables simulation, AI, and modeling capabilities across the company. In this role, you'll partner closely with engineering leadership and cross-functional teams to balance near-term product needs with long-term platform investments, ensuring AtomEngine remains performant, scalable, and extensible as the platform grows. Key Responsibilities * Define and drive the technical vision and architecture of AtomEngine, ensuring the platform can support current and future simulation, AI, and modeling requirements. * Lead the design and evolution of core engine systems, frameworks, and developer tooling, establishing patterns that enable multiple teams to build effectively on the platform. * Own architectural decisions spanning engine runtime, editor tooling, performance infrastructure, and platform scalability. * Identify and drive high-leverage investments that improve performance, reliability, maintainability, and developer productivity across the engine ecosystem. * Lead complex technical initiatives that span multiple teams, aligning stakeholders and driving execution from concept through delivery. * Partner with simulation, AI, platform, and product engineering teams to ensure engine capabilities effectively support higher-level systems and organizational priorities. * Establish and champion engineering standards, architectural principles, and development best practices across the engine codebase. * Serve as a technical mentor and force multiplier for other engineers through design reviews, technical guidance, and knowledge sharing. * Proactively identify technical risks, architectural bottlenecks, and scaling challenges, developing pragmatic strategies to address them before they become constraints. * Balance short-term delivery objectives with long-term platform strategy, making thoughtful tradeoffs that maximize both engineering velocity and system health. REQUIRED QUALIFICATIONS * 9+ years of professional software engineering experience, including significant experience developing game engines, simulation platforms, or other performance-critical systems. * Demonstrated experience owning the architecture and technical direction of large-scale engine, platform, or infrastructure systems. * Deep understanding of game engine architecture, including rendering, ECS frameworks, data-oriented design, tooling, asset pipelines, or runtime systems. * Proven track record leading complex technical initiatives that require alignment across multiple teams and stakeholders. * Strong experience optimizing performance, scalability, reliability, and developer workflows in large codebases. * Experience establishing engineering standards, conducting architecture reviews, and influencing technical decision-making beyond your immediate team. * Strong systems-thinking skills with the ability to evaluate long-term platform tradeoffs and investment opportunities. * Familiarity with modern game engines such as Godot, Unity, Unreal Engine, or equivalent technologies. * Experience shipping and supporting complex live-service products. * Due to federal contract requirements, U.S. Citizenship is required for this position. Nice to Have * Experience with military simulation, constructive modeling, or defense software * Experience working on real-time-strategy (RTS) games * Experience working alongside government customers 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.