AI Engineer, Product

EngineersOfAI; San Francisco (CA); Hybrid; USD 110,000 - 140,000; Full time

Benefits offered by this job

Up to four weeks of remote work per year

Job summary

EngineersOfAI is looking for a Product Engineer in San Francisco to develop the Audit Agent, transforming customer spend reviews from manual operations into an automated system. This hybrid role requires presence in the office three days a week, balancing collaborative energy and remote work flexibility.

You'll engage closely with engineering teams to shape products that enhance user experience and streamline financial tasks. Proficiency in both backend and frontend development is essential for success in this position. Join us to redefine modern financial operations at EngineersOfAI.

Qualifications

• Strong experience in shipping customer-facing features across both backend and frontend.
• Ability to translate product requirements into features.
• Experience with feedback and evaluation loops.

Responsibilities

• Build and ship customer-facing features in production.
• Define data contracts between the agent and financial systems.
• Stand up feedback loops to gather product signals.
• Run experiments on customer-facing behavior.
• Engage directly with customers and prioritize product development.

Skills

End-to-end feature development

System design

API design

Data modeling

Job description

Why join us

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.

Working at Brex allows you to push your limits, challenge the status quo, and collaborate with some of the brightest minds in the industry. We’re committed to building a diverse team and inclusive culture and believe your potential should only be limited by how big you can dream. We make this a reality by empowering you with the tools, resources, and support you need to grow your career.

AI at Brex

AI Engineering at Brex is redefining how businesses run their finances by building intelligent, autonomous systems directly into the Brex platform. Our teams develop AI agents that don’t just surface insights—they take action, optimizing spend, managing workflows, and making real-time decisions on behalf of our customers. By deeply integrating proprietary financial data with product and platform infrastructure, we’re turning complex financial operations into simple, automated experiences and setting a new standard for how modern finance works.

What you’ll do

You’ll be a product engineer building Brex's Audit Agent — an agentic system that reviews customer spend at scale and replaces the manual work traditionally done by BPO teams. The agent itself reasons; the surrounding product harness is what makes that reasoning useful, trustworthy, and operable for real customers.

That product harness is where you’ll live. You’ll design and ship the workflows, surfaces, and data flows that turn the agent's output into something a reviewer can trust and act on — from the reviewer experience itself, to the contracts with Brex's financial system of record, to the feedback loops that make the agent better over time. You’ll move fluidly between backend and frontend as the work demands, picking the right altitude for the problem rather than defending a layer.

This role sits between deep agent design and the customer-facing UI, and it leans toward whichever side the next user problem lives on. You'll partner closely with the engineers driving each — translating ambiguous product requirements into shipped features, pushing back when the design isn't right, and treating the seam between agent reasoning and human workflow as a first-class product surface.

The majority of your work will be backend: system design, data modeling, API shape. A meaningful minority will be on the UI itself, where you'll build alongside our frontend engineers when that's where the next user problem lives.

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

• Build and ship customer-facing features in production — from sketch to rollout to iteration based on real customer feedback.
• Define the data contracts between the agent and the rest of Brex's financial system of record, and evolve them as the product gets sharper.
• Stand up feedback and evaluation loops that let us quickly gather product signals and close them with product fixes — better signals, better surfaces, better workflows.
• Run experiments on customer-facing behavior (UI flows, prompt-driven product changes, new review modes) and make calls based on what the data says.
• Talk to customers and reviewers directly, bring what you learn back into the product, and prioritize what to build next on the team.

Requirements

• Strong track record of shipping customer-facing features end-to-end across both backend and frontend — you don't bo