---
title: 'Principal Infrastructure Engineer at Onebrief'
canonical: 'https://feeny.ai/job/principal-infrastructure-engineer-onebrief-united-states-vm9msmxkf189'
type: 'job'
last_seen: '2026-09-04'
---

# Principal Infrastructure Engineer at Onebrief

- **Company:** Onebrief
- **Location:** United States
- **Compensation:** $240k–$290k
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-06-04
- **Last confirmed live:** 2026-09-04
- **Apply:** https://jobs.ashbyhq.com/onebrief/28e9e96d-91fe-4da6-882c-283a59820b9e

## Job description

CONSEQUENTIAL WORK. DEDICATED PEOPLE.

## ABOUT ONEBRIEF

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.

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.

## ABOUT THE ROLE

Onebrief's infrastructure team owns the platform that delivers our software to military staffs. Our charter spans Kubernetes clusters in commercial and government cloud, application streaming for thin-client users on classified networks, a unified artifact pipeline that signs and ships the same builds to every environment we operate, and air-gapped appliances at forward sites.

We're hiring an Infrastructure Engineer who builds security into the systems they operate rather than treating it as a separate workstream. You'll architect, build, and run the platform end to end. This includes RFCs, PRDs, and reviewing and writing production code alongside Product and Engineering teammates. The work cuts across cloud-native deployments, edge appliances, data platforms, and the application streaming layer that puts Onebrief on classified environments. You'll partner with Governance, Risk, and Compliance (GRC) and mission owners on STIGs, CVE remediation, audit prep, and the controls work that lets us operate in environments such as IL5, IL6, and JWICS.

Success means a platform that stays up under real operational load, ships trusted artifacts to every profile we run, and passes audits without fire drills.

## ABOUT YOU

People by-name request you because you bias towards action. You are a problem-solver by nature who genuinely cares about the mission and the outcome. You operate without hand-holding. You read a problem, weigh tradeoffs, and move. Sometimes the tradeoffs have harsh consequences that you pay for later, but you are resilient and adapt. When the work crosses into expertise you don't have, you dig into the problem, pull in the right teammates, apply their feedback, and continue.

## WHAT YOU'LL DO

- Design, develop, test, iterate, and deploy secure production systems across cloud-native and edge appliance deployments
- Embed with cross-functional teams and advise on infrastructure, security, and deployment best practices that hold up in production
- Own end-to-end infrastructure outcomes for one or more critical programs or priority infrastructure initiatives
- Harden the artifact pipeline so the same signed builds run in cloud, single-tenant high-side, and air-gapped appliance deployments

## WHAT WE LOOK FOR

You'll do well in this role if you bring:

- 8+ years operating production infrastructure in DevOps/DevSecOps, Platform, SRE, Cloud, or Infrastructure role
- Full-stack engineering experience when necessary, e.g., production experience designing, building, and operating services in a modern backend language (e.g., Go, Python, Rust, TypeScript)
- Deep production Kubernetes experience: operators, networking, storage, multi-cluster operations, and a feel for what breaks at scale
- Expertise with major cloud providers (e.g., Amazon AWS, Microsoft Azure), with strong instincts for designing across providers and profiles
- Strong application and infrastructure security fundamentals: identity, network segmentation, secrets management, common vulnerability classes, and sound security judgment under ambiguity
- Demonstrated ability to build working solutions from scratch, connect disparate applications together, and jump into existing code bases to add value
- Experience packaging and shipping workloads into disconnected or air-gapped environments
- Demonstrated leadership/mentorship experience
- Ability to obtain a SECRET clearance

Nice to have qualifications:

- Active US SECRET or TOP SECRET security clearance
- Government cloud expertise (AWS GovCloud, Azure Government)
- FedRAMP, IL4/IL5, IL6, or JWICS environment exposure
- Audit experience (FedRAMP, SOC 2, or equivalent)
- Big data and distributed data experience
- Prior experience supporting defense, intelligence, or other regulated industries

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.

## About Onebrief

## Company Overview
- **One-liner**: Onebrief provides an AI-powered, collaborative operating system for military command, planning, and decision-making.
- **Entity Type**: Private (Series D)
- **Headquarters**: Honolulu, Hawaii, USA
- **Founded**: 2019
- **Founders**: Grant Demaree (CEO)

## Core Business
- **Primary Industry**: Defense technology / Military software
- **Target Customers**: B2G (Business to Government) – specifically the U.S. Department of Defense, including the Army, Navy, Air Force, Marine Corps, Space Force, and Special Operations Forces. Also serves NATO and allied partners.
- **Mission Statement**: To enable a "superhuman command" that makes brilliant decisions, scales output, and is optimally efficient, transforming how military commands operate and make decisions.

## Products & Services
- **Onebrief Platform**: An AI-enabled, web-based operating system for modern military command. It fuses agentic workflows, decision intelligence, and collaborative tools into a unified, resilient platform. It is live on all major military networks (NIPR, SIPR, JWICS) and integrates with existing partner systems. Key capabilities include:
    - **Agentic Workflows**: AI-enabled capabilities to automate routine tasks and accelerate planning.
    - **Live, Synchronized Data**: Real-time data syncing across all products and users.
    - **Holistic Integrations**: Seamless interoperability with existing military systems and partner networks.
    - **Resilient Foundations**: Engineered to stay live, performant, and secure in all conditions, including wartime reality.

## Market Standing
- **Valuation**: $2.15 billion (as of Series D in early 2026) [cbinsights.com](https://www.cbinsights.com/company/onebrief)
- **Total Funding**: $162.89M (including a $200M Series D round) [cbinsights.com](https://www.cbinsights.com/company/onebrief)
- **Key Metric**: Total funding of $162.89M. The company is integral to three of the four largest operational plans (OPLANs) globally. [onebrief.com](https://www.onebrief.com/)
- **Notable Investors**: Battery Ventures, General Catalyst, Insight Partners, Salesforce Ventures, Sapphire Ventures, and 14+ others. [cbinsights.com](https://www.cbinsights.com/company/onebrief)
- **Growth Signals**: Raised a $200M Series D at a $2.15B valuation in early 2026. Acquired Battle Road Digital. Named one of Fast Company's Most Innovative Companies for 2026. Reports a 70% reduction in planning cycle time and a 50% increase in information accuracy for users. [onebrief.com](https://www.onebrief.com/)

## Competitive Advantages
- **Deep Domain Expertise**: Built by a team with extensive military experience (45% of employees are veterans from the Joint Staff, Service Components, NATO, and Special Operations). This gives them unparalleled insight into the specific pain points of military planning. [onebrief.com](https://www.onebrief.com/careers)
- **Mission-Critical Integration**: The only performant software solution specifically designed for this use case that is live and integrated on all major classified and unclassified networks (NIPR, SIPR, JWICS). [onebrief.com](https://www.onebrief.com/)
- **Proven Impact**: Documented results include a 70% reduction in planning cycle time, a 50% increase in information accuracy, and elimination of ~20 hours of weekly redundant work per user. [onebrief.com](https://www.onebrief.com/)
- **High-Level Endorsement**: Integral to three of the four largest operational plans (OPLANs) globally and endorsed by top military leaders. [onebrief.com](https://www.onebrief.com/)

## Strategic Focus
- **Scaling the Platform**: Rapidly scaling the organization and its platform to serve more commands and allied partners.
- **AI-Enabled Command**: Deepening AI and agentic workflow capabilities to further automate and accelerate military planning and decision-making.
- **Expanding Reach**: Growing its footprint across the DoD and allied nations, as evidenced by the acquisition of Battle Road Digital and partnerships like the one with Second Front Systems for rapid deployment. [cbinsights.com](https://www.cbinsights.com/company/onebrief)

## Why Work Here
- **Mission-Driven Impact**: Employees directly contribute to solutions that support national security and the effectiveness of military operations. The work is described as "solving problems that matter" with a tangible impact on mission-critical operations. [onebrief.com](https://www.onebrief.com/careers)
- **High Ownership & Autonomy**: The company empowers employees with a high degree of ownership and autonomy, allowing them to lead projects and shape the platform's future. [onebrief.com](https://www.onebrief.com/careers)
- **Rapid Growth & Career Development**: As a rapidly scaling company, employees have a unique opportunity to influence the company's direction and unlock significant career advancement. [onebrief.com](https://www.onebrief.com/careers)
- **Elite Team Composition**: The team includes veterans from elite military units (Joint Staff, Delta Force, 75th Ranger Regiment) and technologists from top tech companies (Palantir, Google, Amazon, Microsoft). This creates a unique, high-performance culture. [onebrief.com](https://www.onebrief.com/careers)
- **Veteran-Friendly Culture**: 45% of employees are veterans, and the company is explicitly designed to be a mission-driven environment that aligns with the values of service, dedication, and teamwork. [onebrief.com](https://www.onebrief.com/careers)
- **Work Policy**: Not explicitly stated, but the platform is built for distributed collaboration, suggesting a flexible or remote-friendly environment is likely.

## Sources
1. [onebrief.com](https://www.onebrief.com/)
2. [onebrief.com/careers](https://www.onebrief.com/careers)
3. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/onebrief)
4. [onebrief.com/about](https://www.onebrief.com/about)
5. [cbinsights.com](https://www.cbinsights.com/company/onebrief)

## Other roles at Onebrief

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- [Senior Site Reliability Engineer, Colorado Springs](https://feeny.ai/job/senior-site-reliability-engineer-colorado-springs-onebrief-colorado-springs-2m47v5cxs4d3) — Colorado Springs, CO
- [Senior Corporate Security Systems Engineer](https://feeny.ai/job/senior-corporate-security-systems-engineer-onebrief-united-states-gcxaqs80khvx) — United States
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