Staff Game Play Engineer, Battle Road

Onebrief builds collaboration and AI-powered workflow software for military planning and operational coordination.

Today, many critical planning workflows still rely on fragmented systems, static documents, and disconnected tools that make collaboration and decision-making unnecessarily difficult. Onebrief brings modern software, AI, and real-time collaboration into those environments, helping teams operate with greater clarity,...

We are a distributed team of builders from military, operational, and technology backgrounds who care deeply about improving how important work gets done. Some team members work remotely, while others work directly alongside customers in operational environments around the world.

As a Staff Gameplay Engineer, you'll be a senior technical leader on the AtomEngine team — setting the architectural direction for gameplay systems, providing cross-team technical guidance, and directly improving the quality and velocity of everything we ship. This is a high-impact individual contributor role with broad organizational influence.
Own and drive gameplay systems architecture across AtomEngine, providing technical direction on complex, cross-cutting problems
Provide architectural input across multiple concurrent projects — raise the quality ceiling and hit rate on feature delivery
Collaborate closely with designers and PMs to shape features from concept through delivery, ensuring technical feasibility, performance, and schedule alignment
Implement and optimize gameplay systems using Godot, GDScript, and C++
Design with a deep understanding of client/server architecture, state replication, latency, and scale
Partner with QA and testing teams to validate features, identify edge cases, and drive quality outcomes
Mentor mid and junior engineers — invest in the team's growth, not just your own output
Write and maintain clear technical documentation to support long-term maintainability and cross-team collaboration
Balance delivery, quality, and long-term maintainability through sound technical judgment and pragmatic tradeoffs.

9+ years of game engine or gameplay engineering experience, with demonstrated Staff or equivalent scope
Deep familiarity with and experience tailoring game engines — Godot, Unity, Unreal, or custom
Sees and cultivates emergent behaviors across multiple interacting systems
Experience shipping and supporting live service games at scale
Proven ability to architect complex gameplay systems and communicate technical decisions to cross-functional stakeholders
Track record of raising engineering quality and velocity across a team, not just within your own work
Demonstrated technical judgment in balancing feature delivery, system quality, technical debt, and long-term investment
Ability to create clarity and drive execution in ambiguous problem spaces
History of simplifying systems, reducing complexity, and improving maintainability
Low ego — you're here to make the product and the team better
U.S. Citizenship required due to federal contract requirements
Experience with military simulation, constructive modeling, or defense software
Familiarity with entity component systems or simulation-at-scale architecture
Experience working on real-time-strategy (RTS) games
Experience working alongside government customers
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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.