Application Security Lead for AI/ML & Cloud

Neobankbeat; United States; On-site; USD 240,000 - 300,000; Full time

Job summary

Brex in the United States is seeking a Staff Application Security Engineer to lead the security program for our fast-moving product platforms. You will set standards, drive secure-by-default practices, and mentor engineers across teams.

In this role you will shape threat models for AI/ML workflows, oversee proactive vulnerability discovery, and collaborate with Product Platform, Cloud Infrastructure, and Data teams to secure core primitives from design to deployment. On-site work is required.

Qualifications

• 8+ years of experience in Application Security or related field.
• Proven track record leading multi-quarter security programs in a fast-paced environment.
• Hands-on expertise securing AI/ML/agentic architectures and AI vectors.

Responsibilities

• Lead the technical vision and roadmap for the Application Security team.
• Establish secure defaults and standards across engineering teams.
• Architect secure AI/ML workflows and mitigate prompt injection risks.
• Mentor engineers and accelerate security skills across teams.
• Drive proactive vulnerability discovery and offensive security testing.

Skills

Application Security

Technical leadership

AI security

Threat modeling

Cloud security

Python/Go

Communication

Tools

Kubernetes

AWS

GraphQL

gRPC

Job description

Brex in the United States is seeking a Staff Application Security Engineer to lead the security program for our fast-moving product platforms. You will set standards, drive secure-by-default practices, and mentor engineers across teams.

In this role you will shape threat models for AI/ML workflows, oversee proactive vulnerability discovery, and collaborate with Product Platform, Cloud Infrastructure, and Data teams to secure core primitives from design to deployment. On-site work is required.