Full-Time
Posted on 9/9/2025
Defense planning SaaS enabling real-time collaboration
$190k - $220k/yr
Stuttgart, Germany
In Person
Relocation assistance available; role requires residency in Stuttgart, Germany.
US Citizenship, US Top Secret Clearance Required
Onebrief offers a software-as-a-service planning tool for defense and military organizations that converts complex operation plans into reusable, shareable cards. The system supports real-time updates and rapid propagation of changes to improve collaboration among commanders, staff officers, NCOs, and allies. It focuses on defense workflows with a card-based format, enabling faster decision cycles and less time spent on slide-building and planning tasks. The goal is to speed up, simplify, and coordinate defense planning by providing a fast, collaborative, and scalable tool that integrates across military roles and partners.
Company Size
201-500
Company Stage
Series D
Total Funding
$362.2M
Headquarters
Honolulu, Hawaii
Founded
2019
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Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
401(k) Retirement Plan
Flexible Work Hours
Unlimited Paid Time Off
Parental Leave
Home Office Stipend
Onebrief expands leadership team with techveteran Cory Ondrejka. February 6, 2026 HONOLULU (Feb. 3) - Onebrief, the operating system for modern command, today announced that it has hired Cory Ondrejka as Chief Technology Officer (CTO). Ondrejka brings to Onebrief more than 30 years of experience inventing and delivering new technologies while leading large engineering teams, including at Google and Meta. As CTO, Ondrejka will lead Onebrief's engineering organization. He will lead the expansion of Onebrief's artificial intelligence-driven support capabilities and integrate advanced wargaming, modeling, and simulation tools through Onebrief's acquisition of Battle Road Digital. This will bring together operational planning, wargaming, and simulation within the Onebrief platform, creating a single, unified environment for military command. He will focus on making these tools intuitive and seamless, enabling teams to plan, test, and adapt at superhuman speeds. "Over the last three decades, Cory has been involved in some of the most important shifts in modern technology," said Onebrief CEO Grant Demaree. "He understands how to turn new ideas into trusted systems. Cory has already been deeply involved in its work strengthening Onebrief's AI Assist capabilities and integrating Battle Road Digital's best-in-class simulation technologies into its platform. His leadership is critical to its efforts to strengthen and scale this platform. He is the right person to lead its technology. "Joining Onebrief feels like a homecoming," said Ondrejka, a graduate of the United States Naval Academy. "The team is solving real problems for military planners, by incorporating AI into a platform that unites planning and wargaming in one unified system. As we integrate Battle Road into the platform, I'm looking forward to continuing the work of building technology that our nation's military leaders can trust when it matters most." Ondrejka has held senior leadership roles across both early-stage companies and some of the world's largest technology organizations. As vice president of Google Experience, Ondrejka served as Google CEO Sundar Pichai's technical strategy advisor and led engineering teams of more than 1,500 people. His responsibilities included improving core consumer technologies and helping teams apply AI across widely used products. Ondrejka also served as vice president of Mobile Engineering at Meta during the pivotal period when Facebook was shifting from a desktop-focused product to a mobile-first platform. As a leader at Meta during this transformation, he created the technology and product experience that enabled Meta to experience explosive growth both before and after its IPO in 2012. Previously, Ondrejka served as CTO of SmartNews, where he led global engineering teams and drove the adoption of artificial intelligence and large language model technologies to improve content discovery, ranking, and system reliability at scale. Earlier, he was the co-creator and CTO of Second Life, the pioneering virtual world developed at Linden Lab and named one of Time magazine's "Best Inventions" of 2002, which helped shape early thinking around shared digital spaces and online communities.
Onebrief appoints new chief technology officer. Cory Ondrejka will spearhead the integration of wargaming and modeling tech following Onebrief's acquisition of Battle Road Digital. Image: Onebrief / Built In Onebrief, a company working to develop highly efficient command systems for military applications, announced the appointment of a new chief technology officer. Joining the company is Cory Ondrejka, an engineering leadership veteran from companies including Google and Meta. Ondrejka has over three decades of experience inventing and delivering new technologies. In his new role, he will spearhead the expansion of Onebrief's AI-driven support capabilities and integrate the advanced wargaming, modeling and simulation tools gained through the company's recent acquisition of Battle Road Digital. "Over the last three decades, Cory has been involved in some of the most important shifts in modern technology," Grant Demaree, Onebrief's CEO, said in a statement. "He understands how to turn new ideas into trusted systems. Cory has already been deeply involved in our work strengthening Onebrief's AI Assist capabilities and integrating Battle Road Digital's best-in-class simulation technologies into our platform. His leadership is critical to our efforts to strengthen and scale this platform."
Onebrief closed a $200M Series D at a post-money valuation of over $2B, and acquired Battle Road Digital to expand next-gen wargaming capabilities.
Onebrief Closes $200M Series D at $2.15B Valuation
Onebrief raises $200M at $2.15B valuation, acquires Battle Road Digital. Defense technology company Onebrief Inc. announced today that it has raised $200 million in new late-stage funding on a valuation of $2.15 billion and that it used the new funding to acquire Battle Road Digital Inc., a technology company that applies advanced simulation and game-inspired software to defense and broader strategic challenges. Founded in 2019, Onebrief builds collaborative software designed to modernize how military staffs plan, coordinate and execute operations. The company's platform replaces traditional, fragmented tools such as static documents, spreadsheets and email chains with a real-time, artificial intelligence-assisted workflow system that keeps all participants synchronized. Support is offered for complex planning processes by turning inputs into structured building blocks, automating repetitive tasks and helping teams share a single source of truth for operational plans. Onebrief describes its platform as an "operating system for modern command" in that it enables rapid decision-making and collaboration across distributed teams and organizational levels. The platform is also aimed at reducing the time it takes to prepare operational plans from days or weeks to hours or minutes, important in rapidly evolving military contexts. Onebrief's Series D round was led by Battery Ventures LP and Sapphire Ventures LP, with Salesforce Ventures, General Catalyst and Insight Partners LP also participating. "Since we first invested in Onebrief in early 2025, the company has continued to demonstrate a clear vision and proven strategy for deploying game-changing software to the military," said Michael Brown, general partner of Battery Ventures. "We're excited to reaffirm our commitment to the company in this new funding round." Battle Road, the company Onebrief is using some or all of the new funding to acquire, was founded in 2021 and applies advanced simulation and game-inspired software to defense and broader strategic challenges. The company's main offering is AtomEngine, a cloud-first, large-scale simulation platform that can model extensive environments, including terrain, weather, infrastructure and interactive AI-driven entities, for use in wargaming, mission planning, training and analysis. Battle Road's platform allows users to simulate complex scenarios at scale, from detailed tactical engagements to intricate operational exercises involving multiple domains. The platform also supports real-time interactions, multi-user sessions and integration with existing command-and-control systems to allow planners and commanders to explore how different decisions might play out under various conditions. "Integrating with Onebrief allows us to rapidly bridge the gap between simulation and live operations," said Josh Henderson, founder of Battle Road. "This partnership is about developing a platform that provides commanders with powerful new tools to explore tomorrow's fight today while preserving valuable lives, time and resources." Coming into its acquisition, Battle Road had raised a single seed round of $5 million, according to data from PitchBook. Investors in the company included DNS Capital and Konvoy Ventures LP. Image: Battle Road. A message from John Furrier, co-founder of SiliconANGLE: Support its mission to keep content open and free by engaging with theCUBE community. Join theCUBE's Alumni Trust Network, where technology leaders connect, share intelligence and create opportunities. * 15M+ viewers of theCUBE videos, powering conversations across AI, cloud, cybersecurity and more * 11.4k+ theCUBE alumni - Connect with more than 11,400 tech and business leaders shaping the future through a unique trusted-based network. SiliconANGLE Media is a recognized leader in digital media innovation, uniting breakthrough technology, strategic insights and real-time audience engagement. As the parent company of SiliconANGLE, theCUBE Network, theCUBE Research, CUBE365, theCUBE AI and theCUBE SuperStudios - with flagship locations in Silicon Valley and the New York Stock Exchange - SiliconANGLE Media operates at the intersection of media, technology and AI. Founded by tech visionaries John Furrier and Dave Vellante, SiliconANGLE Media has built a dynamic ecosystem of industry-leading digital media brands that reach 15+ million elite tech professionals. Its new proprietary theCUBE AI Video Cloud is breaking ground in audience interaction, leveraging theCUBEai.com neural network to help technology companies make data-driven decisions and stay at the forefront of industry conversations.