Software Engineer

Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain real-time visibility, and control spend effortlessly. Brex’s AI-native automation and world-class service eliminate manual expense and accounting tasks for customers so they can focus on what matters most. Tens of thousands of the world's best companies run on Brex, including DoorDash, Coinbase, Robinhood, Zoom, Plaid, Reddit, and SeatGeek.

• Build and maintain the core accounting platform, including reusable records, rules, mappings, and versioned APIs that Brex product teams and external partners extend without one-off solutions.
• Own ERP connectivity end-to-end, building and scaling reliable integrations with NetSuite, QuickBooks, Xero, SAP, and Oracle, including sync, error recovery, and rate-limit handling.
• Implement customer-facing close experiences for reviewing, configuring, reconciling, and exporting financial activity in our React/TypeScript dashboard.
• Collaborate with Product, Design, Data Science, and Implementation teams to translate complex accounting and ERP concepts into experiences that feel simple for finance teams.
• Design distributed systems where correctness is non-negotiable, making idempotency, reconciliation, traceability, and proactive issue detection first-class parts of the architecture.
• Own problems end-to-end, from user experience and API design to data models, scalability, and ongoing observability.
• Work with ML models in production, integrating predicted GL coding and mappings into accounting workflows while preserving explainability and human review.
• Participate in on-call rotation and maintain high operational standards for mission-critical systems.

• 5+ years of full-time software engineering experience with a focus on backend development.
• 2+ years of experience building systems in a domain where correctness and reliability were core requirements, such as fintech, payments, financial systems, or another regulated industry (e.g. healthcare, legal).
• Strong curiosity for digging deep into the technical problems, and a track record of owning significant technical scope and delivering high quality solutions.
• Experience designing APIs, data models, and platform capabilities that serve many different customer workflows and configurations.
• Proficiency in backend technologies (e.g., Kotlin, Java, TypeScript) and comfort with our stack (Kotlin and Micronaut).
• Experience architecting, developing, and testing full-stack applications end-to-end.
• Comfort working with databases (e.g., PostgreSQL), event streaming (e.g., Kafka), and distributed systems.
• A high bar for engineering standards: code quality, testing, observability, and operational excellence, and a habit of raising that bar in others through review and mentorship.
• Strong written and verbal English communication and interpersonal abilities.

• This role will be based in our São Paulo 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 currently require a minimum of 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.