Onebrief

Onebrief makes military headquarters run seamlessly

onebrief.com

HQ: Honolulu, HI, USA; Remote

51-200

B2B

Company research

Public company, workplace, funding, and market signals

Updated Aug 16, 2026

Overview

Onebrief is a defense-tech software company that provides a collaborative, AI-enabled platform for military staff workflows, operational planning, mission command, and wargaming. Its website describes it as the operating system for modern command.

Primary product

Onebrief platform for military staff workflows / operational planning / collaboration; includes API, AI-assisted planning, and wargaming/simulation capabilities.

Founded

2019

Headquarters

Honolulu, Hawaii, United States

Team size

201-500

Work style

Remote

Industry

Software Development

Sub-industry

Defense technology / military workflow software / operational planning software

Offices

Honolulu, Hawaii, United States

Business model

B2G

enterprise software

subscription software

services/implementation

Funding

Stage

Series D

Total raised

$333.2M

Latest round

Series D · Jan 2026

Latest amount

$200M

Series D

Jan 2026 · Battery Ventures and Sapphire Ventures

$200M

Series C Extension

Jun 2025 · Battery Ventures

$20M

Series C

Feb 2025 · General Catalyst and Insight Partners

$50M

Series B

Dec 2024 · Human Capital

$53M

Seed Round

Jun 2021

$500K

People & investors

Leadership

Grant Demaree

Chief Executive Officer

Adam Lackey

Chief Operating Officer

Cory Ondrejka

Chief Technology Officer

Colten O'Malley

Chief Information Security Officer

Derron Blakely

Vice President, People

Molly Wilkinson

Government Relations (title from company announcement)

Founders

Rafa Pereira

Co-founder (retired); formerly CTO / Head of Product

Investors

9Yards Capital

Alchemist Accelerator

Work & culture

Mission-driven, high-trust, high-intensity, and focused on truth and excellence. The company emphasizes elite engineering, autonomy, and serving military and national-security customers.

Work style

Remote

Compensation

No public compensation bands found. Public signals emphasize venture-backed growth, rapid hiring, and employee tender offers rather than pay ranges.

Benefits

Fully remote organization

Annual in-person company week in October

High ownership and autonomy

Product & market

Pricing

Not publicly disclosed; likely contract-based enterprise/government licensing.

Differentiators

—Built specifically for military staff planning and operational workflows
—Live on classified and unclassified networks (NIPR, SIPR, JWICS)
—Open/bidirectional API for DoD data integration
—Used across major operational plans (OPLANs) and military headquarters
—Adds AI-assisted workflows and wargaming/simulation via Battle Road Digital

Technology

AWS

GitHub

GitHub Actions

GitLab

Kubernetes/Helm

React

Java

Python

gRPC

Prometheus

Datadog

Linkerd

Istio

Keycloak

SAML

Google Workspace

Microsoft 365

Atlassian

Jenkins

Airtable

Customers

U.S. military headquarters worldwide

U.S. Combatant Commands

Air Combat Command

U.S. and allied military staffs

Global military forces

Competitors

Palantir

Microsoft

other defense workflow / C2 / operational planning software vendors

Scale & contact

Estimated revenue

~$25M-$50M annual revenue (Exa estimate showed ~$33.2M annual revenue as of 2026-06)

Estimated monthly visits

12.8K

Traffic estimate as of Jun 2026

Signals & risks

Other

Nov 2024

Onebrief said it made the bulk of a financing raise in February as a hedge against a potential yearlong Continuing Resolution and defense-appropriation risk, indicating sensitivity to government budget cycles.

Source

Acquisition

Jan 2026

Onebrief acquired Battle Road Digital to add wargaming/simulation capabilities.

Source