Senior Engineering Manager, Data Foundations

About Onebrief

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 $320m+ from top-tier investors, including Battery Ventures, General Catalyst, Sapphire Ventures, Insight Partners, and Human Capital, and today, Onebrief is valued at $2.15B. With this continued growth, Onebrief is able to make an impact where it matters most.

About the Role:

As Senior Engineering Manager for Data Foundations, you’ll build and lead a new team responsible for establishing the application data architecture that support Onebrief’s next phase of scale.

As the platform grows across deployments, customers, and integrations, early-stage data flexibility becomes harder to sustain. You’ll own the evolution to a clear, opinionated, enterprise-grade application data schema, ontology and versioning strategy that all Onebrief product engineering teams build upon.

The Kinds of Problems You’ll Tackle:

This role is centered on foundational, cross-org problems, not incremental feature delivery.

Examples of the challenges this team will own:

• Iterate and evolve our application data schema, long term data strategy, ontology and ensure our SaaS data architecture is ready for exponential growth

• Take ownership of our application’s data model and build on its success while evolving its long term architecture to ensure continued growth and resiliency.

• Establishing a logical data ontology that becomes the baseline for all product data movement

• Preparing the platform for seamless enterprise integrations, audibility, and data lifecycle governance

• Ensure our data model is flexible and can operate in cloud and unique air-gapped environments

Why This Role Matters:

The data foundation you build will directly determine:

• How quickly our product development teams can ship features safety

• How fast we are able to scale our 3rd party ecosystem and integrations reliably

• How well the platform supports new customers, and use cases

This role will influence multiple domains at Onebrief including product feature teams, AI, Identity and our back-end services. Getting it right creates leverage for the entire company.

About You:

You’re a senior engineering leader who has owned foundational systems in enterprise SasS or customer facing data-focus services.

You’ve led teams through ambiguous, high-impact architectural change, particularly around data models, schemas, or core platform abstractions. You’re comfortable making trade-off decisions, understanding which ones must be right and which can evolve.

You lead with low ego and high trust. You create clarity in complex problem spaces, communicate crisply across functions, and care deeply about building teams and systems that scale beyond you.

What You’ll Do:

• Build and lead a focused team designed for high ownership and fast architectural decision-making, with opportunity to expand over time.

• Own Onebrief’s data model, schema, and evolution strategy from first principles

• Lead large-scale architectural change, setting standards for how data is structured, versioned, and governed

• Partner closely with product, platform & infrastructure teams as an application architecture leader.

• Drive execution of foundational roadmap initiatives tied to long-term platform success.

• Develop Principle, Staff, and Senior engineers, creating clarity and autonomy without becoming a bottleneck

You won’t be writing production code day to day, but this is a hands-on leadership role. You’ll be making decisions impacting system design, application architecture and technical tradeoffs.

What We Look For:

• 10+ years total engineering experience (backend, data, or full-stack)

• 4+ years directly managing software/data engineering teams

• Proven experience designing and scaling data-intensive systems for SaaS or platform products

• Experience evolving data models and APIs in product