Brex Inc

AI Engineer, Ecosystem

Brex Inc$171K — $240K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of experience in software development or technical product management.
  • Strong background in maintaining production software and integrating with third-party platforms.
  • Proven experience in user-facing products with external customer interactions.
  • Expertise in identity management, authentication mechanisms, and secure data handling (OAuth, RBAC).
  • Demonstrated reliability in managing APIs and integrations with external clients.

Responsibilities

  • Own roadmap and decisions for Brex's MCP Apps across various third-party AI platforms.
  • Define UX, technical, and reliability standards for Brex's interactions within AI ecosystems.
  • Design secure, auditable integration patterns for user permissions and actions in third-party environments.
  • Build resilient production-grade integrations that adapt to changes and challenges in external platforms.
  • Collaborate with cross-functional teams to ensure safe and effective integrations and product support.
  • Act as the lead for reusable AI capabilities, promoting best practices and standards across the organization.

Benefits

  • Hybrid work model with required in-office attendance on scheduled days.
  • Up to four weeks of fully remote work per year.
  • Collaborative and energetic office environment in San Francisco.
Full Job Description
What you'll do

You'll be a technical owner for Brex's external AI ecosystem: the integrations, surfaces, and standards that allow customers to interact with Brex through third-party assistants and platforms.

Over the next year, you'll turn early integrations into first-class, exemplar applications - stable, secure, and opinionated - that are showcased by platform partners and relied on by power users at Brex's most sophisticated customers. You'll design how Brex data and actions are safely exposed, how permissions and auditability work across boundaries, and how new capabilities (including richer UI surfaces) are introduced over time.

This is a product role disguised as infrastructure. Success is measured by real usage, trust, and customer reliance - not by the number of integrations shipped.

Where you'll work

This role will be based in our San Francisco office. We are a hybrid environment that combines the energy and connections of being in the office with the benefits and flexibility of working from home. We require three coordinated days in the office per week - Monday, Wednesday, and Thursday. As a perk, we also have up to four weeks per year of fully remote work!

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.

Requirements
  • 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 role-based access control (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.

Bonus points
  • Experience publishing and maintaining apps or integrations in third-party marketplaces (iOS, Slack, Shopify, GitHub, Chrome, etc.).
  • Prior work on administrative or platform-side tooling for ecosystems.
  • Familiarity with conversational or agentic interfaces in production environments.
  • Experience building evaluations to measure and improve the quality, reliability, and safety of AI-powered features.

Compensation

The expected salary range for this role is $171,000 - $240,000 USD. However, the starting base pay will depend on a number of factors including the candidate's location, skills, experience, market demands, and internal pay parity. Depending on the position offered, equity and other forms of compensation may be provided as part of a total compensation package.

About Brex Inc

Brex is a financial services company that offers credit cards and cash management accounts to technology companies. Brex was founded in 2017 by Henrique Dubugras and Pedro Franceschi. The company is headquartered in San Francisco, California. Brex offers a credit card designed specifically for startups, which does not require a personal guarantee or deposit. The company also offers a cash management account that allows businesses to manage their finances in one place. Brex has raised over $300 million in funding from investors including Y Combinator, Peter Thiel, and Max Levchin.
Learn more about Brex Inc
Size
500 employees
Industry
Founded
2017

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