Senior Software Engineer, Operational AI

The shape of it

In the posting’s own words

What you'll do Brex's AI strategy has three pillars: Product AI builds AI into the products our customers use, Corporate AI gives every employee AI tools to work faster, and Operational AI builds the AI that runs the company. The Operational AI team owns the AI systems and internal platforms that make Brex's operations AI-native, from onboarding and KYC automation to AI-powered customer support. We're a small team with a large surface area, and our work directly shapes how fast Brex can onboard, serve, and grow its customers. As a Senior Software Engineer on the team, you'll focus on Agents Platform, Brex's internal platform for building, evaluating, and running AI agents in production. It already powers critical automations in customer onboarding and AI tools for our sales and customer success teams. You'll own its technical direction, help it evolve from simple workflows into agents that take action, and make it the default way Brex ships AI into its operations.

What it asks for · 8

• 5+ years of professional software engineering experience, with a track record of designing, building, and operating reliable production backend systems.
• Experience with distributed and asynchronous systems and the reliability concerns that come with them, such as retries, idempotency, backpressure, and observability.
• Strong written and verbal communication, and the judgment to prioritize across many internal customers, including non-engineers. English proficiency is required, as interviews will be conducted in English.
• Experience building eval frameworks, LLM gateways, or agent platforms used by other teams.
• Experience with Temporal or another durable workflow engine.
• Experience with service and agent authorization, such as RBAC, scoped credentials, or agents acting on behalf of users.
• Production experience with tool use, MCP, retrieval, or agentic loops.
• Experience in fintech or another regulated environment, where auditability and model governance matter.

Tools and skills named

Words the posting leans on

• experience10×
• platform10×
• agents9×
• systems9×
• customer7×
• engineering6×
• build5×
• tools5×
• building4×
• internal4×
• operational4×
• production4×
• technical4×
• data3×
• design3×
• developer3×

Counted from the posting after the mission statement and the legal notices are set aside. The ones near the top are the ones a screener is looking for.

More open at Brex

• Account Executive, YCSan Francisco, California, United States
• Account Protection SpecialistVancouver, British Columbia, Canada
• AI Engineer, WorkbenchSan Francisco, California, United States
• Banking Relationship ManagerSan Francisco, California, United States
• Brand Marketing LeadNew York, New York, United States; San Francisco, California, United States; United States
• Candidate Experience AnalystSão Paulo, São Paulo, Brazil