Principal AI Security Engineer

The posting, as Zip Co Limited wrote it

Lead the technical direction for securing AI applications, autonomous agents, and AI-enabled engineering workflows at Zip.

Architect and build scalable security controls for LLM applications, RAG systems, and agentic AI platforms.

Develop AI security testing, automation, and secure-by-default engineering practices to enable safe innovation at scale.

Remote-first opportunity for US-based employees, with the option to work in person from our Manhattan office.

Start your adventure with Zip

Join Zip's Security team and help shape how we securely build and operate AI-powered systems. AI is transforming how we develop software, operate our platforms, and deliver products. As our Principal AI Security Engineer, you'll lead the technical direction for securing AI applications, autonomous agents, and AI-enabled engineering workflows.

This is a hands-on engineering role for someone who has built and secured AI solutions in production. You'll work directly with engineering, platform, and security teams to design and implement scalable security controls that enable innovation without introducing unnecessary risk.

We're looking for a builder who can establish architectural direction, write code, and turn complex AI security challenges into practical engineering solutions.

Interesting problems you'll get to solve

Architect and secure AI systems

• Define and implement security architecture for LLM applications, RAG, autonomous agents, and AI-powered products.
• Engineer protections against prompt injection, data exfiltration, insecure tool execution, excessive agency, and other AI-specific threats.
• Establish secure patterns for model access, NHI access, authorization, secrets management, and sensitive data protection.
• Design security boundaries for AI agents interacting with enterprise systems, APIs, databases, and cloud infrastructure.

Build security into AI-first engineering

• Establish secure-by-default patterns that allow developers to adopt AI without bypassing security controls.
• Develop secure harnesses and guardrails for AI coding assistants, autonomous development agents, and AI-generated software.
• Secure MCP servers, agent tool integrations, and AI-enabled development workflows.
• Build reusable security components, APIs, and automation that integrate directly into engineering platforms and CI/CD pipelines.

Engineer AI security testing and automation

• Build automated security testing and evaluation capabilities for AI applications and agents.
• Develop approaches for AI red teaming, prompt injection testing, and security regression testing.
• Implement monitoring and detection for suspicious AI behavior, unauthorized tool execution, and sensitive data exposure.
• Post incidence response - agent misalignment (exceeds authority, unauthorized action).
• Partnering with the Agentic Platform team on controls to prevent recurrence.
• Leverage AI to automate security engineering activities, including threat model

[…]
benefits.

*Please note that visa sponsorship is not available for this position.

If hired, employees will be in an 'at-will position' and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation or benefit program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.

Be a part of a team that reflects the diversity of our customers

We pride ourselves on being a workplace that provides equal opportunities to people of all ages, cultural backgrounds, sexual orientations, gender identities, abilities, veteran status, and everything else that makes you unique.

Equally, we’re committed to ensuring our recruitment processes are accessible and inclusive. Please let us know If there are any adjustments that need to be made to ensure you have a fair and equitable experience.

And finally…get to know us

Zip Co Limited (ASX: ZIP) is a digital financial services company, offering innovative, people-centered products. Operating in two core markets - Australia and New Zealand (ANZ) and the US, Zip offers access to point-of-sale credit and digital payment services, connecting millions of customers with its global network of tens of thousands of merchants. We’re proud to be a values-led business and our values - Customer First, Own it, Stronger Together and Change the Game - guide us in everything we do.

I acknowledge by clicking "Submit Application", that the information provided is true and correct. I also understand that any willful dishonesty may render for refusal of this application or immediate termination of employment. By providing your information, you acknowledge that you have read our Zip Applicant and Candidate Privacy Notice and authorize Zip to process your data subject to those terms. Zip participates in the federal government’s E-Verify program. #LI-Remote

Before you apply, give Zip a try -> rebrand.ly/check-zip-out