Staff Software Engineer, Full-stack

Onebrief builds collaboration and AI-powered workflow software for military planning and operational coordination. Military planning is complex by nature, requiring teams to coordinate information, people, and decisions across systems and locations. Onebrief brings planning, collaboration, simulation, and AI into one connected environment, helping teams test strategies, adapt to changing conditions, and make decisions with greater clarity when the stakes are real.

Responsibilities

Own and drive technical strategy across multiple squads, shaping architectural decisions that have a lasting impact on Onebrief's platform.; Tackle the company's most ambiguous technical challenges, turning loosely defined problems into scalable solutions that teams can execute.; Build the shared systems, patterns, and platform capabilities that enable engineering teams to move faster and deliver more effectively.; Partner with engineering and product leadership to influence the technical roadmap, balancing long-term platform health with rapid customer delivery.; Shape how engineering works by evolving AI-assisted development practices, engineering standards, and technical decision-making across the organization.; Raise the technical bar by mentoring engineers through design reviews, architectural guidance, and cross-team collaboration.

Requirements

12+ years of software engineering experience with a track record of technical leadership across teams and platforms.; Strong experience designing scalable distributed systems, APIs, data models, and cloud-native architectures.; Full-stack expertise with the ability to work across frontend, backend, and infrastructure as needed.; Active user of AI-assisted development tools, with a thoughtful approach to integrating them into engineering workflows.; Excellent written and verbal communication skills, including driving technical alignment through design docs and architecture discussions.; Comfortable leading through ambiguity and influencing without direct authority.

Nice to have

Background in mission-critical or high-compliance domains (FedRAMP, SOC2, DoD); Experience with authentication and identity infrastructure at scale (OIDC, SAML, federated identity); Prior experience in a high-growth B2B SaaS environment scaling through significant inflection points; Familiarity with event-driven architectures and the trade-offs of async-first system design