What is an Engineering Manager?

At Brex, the role of an Engineering Manager (EM) is pivotal to our mission of building the AI-powered spend platform that empowers companies to operate with confidence. This position is not merely about administrative oversight; it is a role for a "player-coach" who thrives in an environment where builders become leaders. You will be responsible for scaling systems with speed and intention, balancing the immediate needs of product delivery with the long-term health of our technical architecture.

You will lead high-performing teams across critical domains—whether that is driving our Salesforce ecosystem, securing our platform against emerging threats, or fueling our growth engine through Acquisition and Activation workflows. Your impact will be measured by your ability to translate complex business requirements into scalable technical roadmaps, mentor engineers to reach their full potential, and collaborate deeply with Product, Design, and Operations partners.

This role sits at the intersection of technical excellence and strategic execution. Whether you are designing systems for millions of financial transactions or creating frictionless onboarding journeys for startups and enterprises like DoorDash and Flexport, you will be expected to push limits and challenge the status quo. At Brex, we value high autonomy, and you will be empowered to make architectural decisions that shape the future of financial technology.

Common Interview Questions

These questions are based on real interview experiences from candidates who interviewed at this company. You can practice answering them interactively on Dataford to better prepare for your interview.

Getting Ready for Your Interviews

Preparing for an Engineering Manager interview at Brex requires a shift in mindset. You need to demonstrate that you are a seasoned leader who has not lost touch with the craft of engineering. The interviewers are looking for evidence that you can operate at a high strategic level while understanding the "nuts and bolts" of the systems your team builds.

We evaluate candidates based on several core criteria:

Technical Leadership & Architectural Judgment You must demonstrate the ability to guide technical decisions without necessarily writing every line of code. Interviewers will assess how you evaluate trade-offs in distributed systems, how you ensure reliability in financial software, and how you champion an AI-native vision in your technical strategy.

People Management & Team Building We look for a "servant leader" approach. You will be evaluated on your track record of hiring diverse talent, managing performance, and fostering an inclusive culture. You should be ready to discuss how you grow engineers from mid-level to senior roles and how you handle difficult conversations with empathy and clarity.

Operational Excellence & Execution Brex moves fast. You need to show how you manage project timelines, handle cross-functional dependencies, and deliver high-quality software in a hybrid, fast-paced environment. We value leaders who can create processes that reduce friction rather than add bureaucracy.

Product & Business Acumen Engineering at Brex does not happen in a silo. You will be tested on your ability to partner with GTM and Product leaders to drive business outcomes. You should be able to articulate how technical decisions impact the bottom line, customer experience, and our competitive advantage in the fintech space.

Interview Process Overview

The interview process for an Engineering Manager at Brex is rigorous and designed to test both your leadership philosophy and your technical competence. It generally begins with a Recruiter Screen to align on your background and interest, followed by a Hiring Manager Screen where you will discuss your management experience and the specific scope of the role (e.g., Security, Activation, or Salesforce).

Following the initial screens, you will move into a comprehensive interview loop. Unlike some EM roles at other companies that are purely behavioral, Brex places a significant emphasis on technical ability. You should expect a System Design round where you will architect a solution relevant to our domain (fintech/payments/workflow). There will also be dedicated sessions for People Management, Project Retrospectives, and a "Topgrading" or Career History interview that dives deep into your professional journey and decision-making patterns over time.

This timeline illustrates a standard flow, though specific steps may vary slightly depending on the team (e.g., Security Engineering may have more specific domain questions). Use this visual to pace your preparation; ensure you are technically sharp for the middle stages and ready to discuss your leadership narrative in depth for the final rounds.

Deep Dive into Evaluation Areas

To succeed, you must be prepared to discuss specific competencies in detail. Based on candidate reports and our hiring philosophy, here are the major areas you will be evaluated on.

System Design & Architecture

For an Engineering Manager, we do not expect you to code the solution live, but we do expect you to design it. You must show you can build systems that are secure, reliable, and scalable.

Be ready to go over:

• Data Consistency: How to handle transactions where data integrity is non-negotiable (e.g., double-entry ledgers).
• Scalability: Designing systems that handle high throughput for global payments or real-time spend management.
• Integration Patterns: How to architect systems that integrate with third-party tools (like Salesforce) or legacy banking infrastructure.
• Advanced concepts: Event-driven architecture, idempotency in payments, and AI/agentic implementation strategies.

Example questions or scenarios:

• "Design a real-time expense notification system that scales to millions of users."
• "How would you architect a system to handle corporate card transaction clearing ensuring zero data loss?"
• "Design an onboarding flow that verifies business identity instantly using third-party APIs."

People Management & Culture

This is the core of the role. You need to show that you can build and sustain a healthy, high-performing engineering organization.

Be ready to go over:

• Performance Management: specific examples of managing high performers and turning around underperformers.
• Hiring Strategy: How you identify "bar-raising" talent and pitch them on the Brex vision.
• Team Structure: How you organize teams for autonomy and speed.

Example questions or scenarios:

• "Tell me about a time you had to manage a low-performing engineer out of the team."
• "How do you resolve conflicts between two senior engineers who disagree on an architectural direction?"
• "Describe how you have improved team morale during a period of high pressure or reorganization."

Execution & Cross-Functional Collaboration

You will be asked how you get things done. This area tests your ability to deliver software while managing stakeholders in Product, Design, and Sales.

Be ready to go over:

• Project Management: How you prioritize technical debt against new feature development.
• Stakeholder Management: specific examples of negotiating roadmaps with Product Managers.
• Incident Management: How you handle production outages and lead post-mortems.

Example questions or scenarios:

• "Describe a project that was behind schedule. How did you handle it and what was the outcome?"
• "How do you decide when to build a custom solution versus buying an off-the-shelf tool?"
• "Tell me about a time you had to say 'no' to a critical request from a stakeholder."