Onebrief is collaboration and AI-powered workflow software designed specifically for military staffs. By transforming this work, Onebrief makes the staff as a whole superhuman - meaning faster, smarter, and more efficient.
We take ownership, seek excellence, and play to win with the seriousness and camaraderie of an Olympic team. Onebrief operates as an all-remote company, though many of our employees work alongside our customers at military commands around the world.
Founded in 2019 by a group of experienced planners, today, Onebrief’s team spans veterans from all forces and global organizations, and technologists from leading-edge software companies. We’ve raised $123m+ from top-tier investors, including Battery Ventures, General Catalyst, Insight Partners, and Human Capital, and today, Onebrief is valued at $1.1B. With this continued growth, Onebrief is able to make an impact where it matters most.
Role OverviewWe're seeking a Machine Learning Engineer with a deep understanding of information retrieval, knowledge representation, and edge-deployable ML systems.
In this role you will work toward transforming complex, interconnected military operational plans into actionable, queryable knowledge. You'll lead the design and implementation of scalable systems for chunking, indexing, and retrieving rich data from multiple modalities. Your solutions will enable fast, reliable information retrieval to augmented Generative AI systems.
Expect to architect hybrid retrieval pipelines that blend semantic search, keyword-based methods, and graph reasoning, optimize embeddings for specialized content, and build resilient systems that power rapid decision-making.
We're looking for someone with hands-on experience building real-world retrieval and knowledge-driven systems.
What You'll Do
Design and build hybrid retrieval systems that combine semantic, symbolic, and graph-based methods
Develop pipelines to encode and retrieve operational knowledge using LLMs, vector databases, and custom chunking/indexing strategies
Build and optimize retrieval-augmented generation (RAG) systems for high-stakes environments
Architect knowledge graphs and integrate them into retrieval workflows
Collaborate with ML, product, and domain experts to transform requirements into deployable solutions
Key Technologies
Vector Databases, Hybrid Search Pipelines
Embeddings & Transformer-based models
Knowledge Graphs (Neo4j, RDF, SPARQL, custom schemas)
Python, Distributed Systems, ETL pipelines
Docker, Kubernetes, Edge Computing platforms
Required:
B.S. in Computer Science, Engineering, or equivalent practical experience
2–4 years of experience in applied ML, information retrieval, or knowledge systems
Strong Python programming skills
Experience with semantic search, vector stores, and retrieval system design
Comfort with ETL workflows and structured, domain-specific datasets
Understanding of distributed systems and performance trade-offs
Familiarity with testing and evaluating information retrieval systems
Understanding of security considerations in data handling and system design
Preferred
Experience designing chunking/indexing pipelines for large, domain-specific datasets
Experience designing or deploying knowledge graphs in real-world systems
Experience with offline-capable and edge-deployable ML systems
Familiarity with containerization and orchestration tools (Docker, Kubernetes)
Exposure to geospatial data and reasoning systems
Background in defense, national security, or other mission-critical domains
Understanding of LLM prompt engineering, context window optimization, and RAG techniques
Advanced degree (M.S. or PhD) in a relevant field is a plus
Working Style:
First principles thinking with high ownership mentality
Strong communication and collaboration skills
Bias for action - you deliver working systems in imperfect conditions
Comfortable working autonomously in a fast-moving startup environment
Compensation Range: $200K - $230K
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What We Do
Before Onebrief, military planning and collaboration was slow, inefficient, and resource-intensive. Building slides with no version control as partners collaborated would have staffs spend weeks or months on a single product or document.
With Onebrief, these workflows are now simple and collaboration between large commands is efficient. Staff optimization is the key to building a more resilient, more effective military. Today Onebrief users report at least 2x time savings - and growing.
Onebrief is a first of its kind software for the military. While many others have tried to build a solution for this problem, Onebrief’s “card” structure for reusing data and enabling real time updates is what makes this possible. Core features and attributes that make this platform powerful include:
- Global Collaboration
- Real-Time Updates
- AI Automation
- Interoperability + Integrations
- Deployable across Secret and Top Secret Networks
Mission Driven
Onebrief is composed of professionals from backgrounds of all kinds - spanning veterans across forces and organizations, and technologists from leading-edge software giants.
Onebrief is more than just a software platform; it's a mission-driven company dedicated to improving the efficiency and effectiveness of military planning. By joining the team, you'll contribute to solutions that directly support national security and the work of service members.
Your work directly addresses critical challenges that military planners and operators face daily. Every line of code and every design decision contributes to real-world outcomes.
The software was designed and built by a team of experienced planners - lending a nuanced perspective on the challenges our partners face. Our team embeds alongside users - from
the Pentagon to the Indo-Pacific - to build a platform that meets their unique needs.
Rapid, Strategic Growth
Our users love the platform and growth is scaling, most recently reporting operational usage growth at a 19,600% annualized rate. Stronger utilization is underway and we’re at an exciting period of advancement.
As a rapidly growing organization, you'll directly influence its direction and long-term success. Over the past year we’ve seen exciting growth metrics:
First, our headcount has grown 150% YoY to keep pace with our product advancement and customer growth.
Our funding has skyrocketed, most recently raising our Series C, led by top-tier venture investors who have deep expertise in defense tech.
Why Work With Us
Impactful Transformation
At Onebrief, we believe optimizing the military staff is the most impactful thing - on a per-dollar basis - in defense tech right now. This has the potential to save the department of defense billions of dollars and save users countless hours. It’s a longstanding problem that we’re uniquely positioned to solve.
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Onebrief Offices
Remote Workspace
Employees work remotely.
