AI Ecosystem Engineer - Secure Integrations (Hybrid)

Brex; Washington; Hybrid; USD 171,000 - 240,000; Full time

Job summary

Brex, the intelligent finance platform, is seeking an AI Engineering lead to own Brex’s external AI ecosystem, building and shipping integrations with OpenAI, Claude, Slack and other partners. This role focuses on secure, auditable interfaces and scalable production software.

Based in Seattle in a hybrid setup (three days in office weekly with remote options), you’ll work cross-functionally with Security, Platform, Sales, Enablement and internal agent teams to raise the bar for reliability and

Qualifications

• Experience building and owning production software, including systems that integrate with or depend on third-party platforms.
• Demonstrated technical ownership for user-facing products with real external customers.
• Deep experience with identity, authentication, and secure data access across system boundaries, including OAuth and RBAC for permissions.
• Proven ability to ship and operate reliable integrations with external APIs and clients outside your control.
• Strong product judgment, written communication, and end-to-end ownership, including accountability for quality and launch readiness.

Responsibilities

• Own Brex's MCP Apps for OpenAI, Claude, Slack, and other embedders, including roadmap decisions across core and long-tail partners.
• Define the technical, UX, and reliability standards for how Brex surfaces and operates within external AI assistant ecosystems.
• Design and maintain secure, auditable integration patterns, including permissions, read/write access, and acting on behalf of users across third-party environments.
• Build and operate production-grade integrations that remain resilient amid evolving platforms, unpredictable clients, and shifting constraints.
• Partner cross-functionally with Security, Platform, Sales, Enablement, and internal agent teams to ensure integrations are safe, valuable, and well-supported.
• Serve as the center of excellence for reusable AI capabilities across Brex, defining and evangelizing standards, patterns, and shared components that power AI functionality both within the Brex platform and across external ecosystem integrations.

Skills

Production software ownership

External API integrations

OAuth & RBAC

Technical ownership

Secure data access

Job description

Brex, the intelligent finance platform, is seeking an AI Engineering lead to own Brex’s external AI ecosystem, building and shipping integrations with OpenAI, Claude, Slack and other partners. This role focuses on secure, auditable interfaces and scalable production software.

Based in Seattle in a hybrid setup (three days in office weekly with remote options), you’ll work cross-functionally with Security, Platform, Sales, Enablement and internal agent teams to raise the bar for reliability and