Executive Assistant, Legal

Consequential Work. Dedicated People.

About Onebrief

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, coordination, and adaptability in situations where decisions carry real-world consequences.

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.

Founded in 2019, Onebrief is backed by leading investors including General Catalyst, Battery Ventures, Insight Partners, Sapphire Ventures, and Human Capital. Valued at more than $2 billion, we continue to invest in product innovation, AI capabilities, and team growth.

Why This Role Exists
We are hiring an Executive Assistant to provide comprehensive administrative and operational support to our General Counsel/Vice President of Enterprise and Governance. In an organization managing complex corporate, legal, and regulatory environments, our leader requires an elite operational partner to streamline workflows, coordinate critical stakeholder engagements, and protect executive time.

This role goes beyond basic scheduling; it is built for an administrative professional who brings structure, predictability, and clarity to a highly dynamic corporate environment. Operating with positive agency and low ego, you will serve as the reliable connective tissue between the executive office and both internal and external stakeholders, ensuring long-term priorities remain aligned and on track.

What You’ll Do
You will partner closely with our internal operations and legal leadership to manage administrative logistics and maximize executive efficiency. Your core responsibilities include:
• manage a complex, shifting calendar and coordinate comprehensive travel arrangements to fully optimize the executive's daily schedule.
• ensure the executive is thoroughly prepared for all internal and external engagements by assembling meeting materials, presentations, and coordinating preparatory reviews.
• serve as the primary point of contact and liaison for internal teams and high-profile external stakeholders, managing sensitive correspondence with diplomacy and a clear understanding of the executive's voice.
• track ongoing priorities, align stakeholders, surface potential roadblocks early, and simplify decision-making processes across the enterprise and governance portfolio.
• establish repeatable administrative workflows to reduce friction and improve day-to-day operational efficiency across the team.
• provide hands-on assistance with special projects, research tasks, and corporate organizational initiatives as needed.
• maintain the highest level of confidentiality and discretion when handling sensitive legal, enterprise, and corporate governance information.

Minimum Qualifications
• Experience providing executive-level administrative support in a fast-paced, high-accountability corporate or startup environment.
• Proven track record of managing complex calendars, travel logistics, and optimizing schedules across competing priorities.
• Strong technical proficiency with G-Suite, Slack, and internal collaboration tools like Notion.
• Demonstrated ability to exercise independent judgment and solve administrative challenges with minimal direction.
• Excellent interpersonal and communication skills to effectively build trust and represent the executive to outside parties.
• Ability to provide flexible support to accommodate fluctuating project timelines, including traveling for in-person support across the USA when required.

Preferred Qualifications
• Prior experience supporting a legal, corporate governance, or government relations executive.
• Track record of creating structured organizational tools, databases, or processes to optimize team workflows.
• Experience navigating strict confidentiality constraints or sensitive regulatory environments.

Indicators of Success
This role will evolve as priorities change, but the outcomes below reflect what success typically looks like in the first six months.
A successful Executive Assistant will:
• deliver a seamless rhythm of calendar and communication management that significantly increases the daily leverage and focus of the General Counsel.
• build deep trust across internal teams and external partners, acting as an effective, reliable gatekeeper and facilitator for the executive's office.
• introduce structured administrative workflows that allow the executive office to operate proactively rather than reactively.
• demonstrate proactive anticipation of executive needs, ensuring all meeting materials and context are delivered accurately and ahead of schedule.
• navigate fluctuating workloads and shifting meeting constraints with calm, structured execution.

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.