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BrexBrexSan Francisco, CA

Staff Software Engineer, Travel & Expense

Staff engineer providing technical leadership across Brex's Travel & Expense domain (expenses, travel, policy, spend controls). Identify and drive cross-team technical problems, set architecture direction, raise engineering bar, and mentor without direct reports. Requires 8+ years experience with large-scale backend systems.

240k – 285k/yr
Hybrid8+ YOEFullstack Engineering

About the role

Responsibilities

  • Identify the highest-impact technical problems across Travel & Expense — including the cross-team gaps that individual teams can't see or own — and drive them to resolution.
  • Set and raise the technical bar across the group through design reviews, architecture decisions, and hands-on work where it matters most.
  • Partner as a peer with existing Staff Engineers and with EMs across expenses, travel, policy, and spend controls to align on direction and unblock execution.
  • Act as a force multiplier: mentor senior engineers, improve how teams design and ship, and grow the next generation of technical leaders.
  • Bring an AI-forward mindset to how the org builds, reviews, and operates.
  • Contribute directly to the group's technical strategy and inform where leadership invests.

Requirements

  • 8+ years of software engineering experience, with a track record of technical leadership across multiple teams or a group.
  • Demonstrated ability to identify and drive ambiguous, cross-cutting problems to resolution without a defined charter.
  • Deep experience designing and operating large-scale backend systems in production.
  • Strong collaboration skills; a track record of raising the bar for engineers around you and working effectively with both ICs and managers.
  • Excellent written and verbal communication.

Nice-to-Haves

  • AI-forward mindset for building, reviewing, and operating systems.

Skills

Backend SystemsSystem DesignArchitectureTechnical LeadershipMentorshipAI
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