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About the Role

ACV Auctions is seeking a Principal Architect, Product Security to secure the development and deployment of AI within the company's marketplace. This role is critical for protecting sensitive data and ensuring the integrity of AI-driven features, including computer vision models, pricing models, and LLM functionalities. You will define secure architecture, standards, and controls for AI systems, guiding engineering teams to deliver secure applications.

Responsibilities

Define ACV's target-state secure architecture and reference patterns for AI/ML systems, including LLM features, retrieval pipelines, agentic workflows, and computer vision models.
Protect the integrity of ACV's vision-based condition and pricing pipeline against adversarial inputs and manipulated or AI-generated imagery.
Set secure-by-default standards for AI development, covering prompt injection defense, output handling, tool and agent permissioning, and model and training-data supply chain security.
Threat model and review high-risk AI and application designs using frameworks like MITRE ATLAS and OWASP Top 10 for LLM and Agentic Applications.
Own the security architecture for AI-assisted engineering tools, including coding assistants and autonomous agents.
Establish ACV's AI security testing capability, including adversarial testing, red-teaming, evaluation harnesses, and runtime guardrails.
Advise leadership on multi-year AI security strategy and translate policy into enforceable technical controls.
Scale AI security expertise across engineering through programs like Security Champions and mentor engineers.
Represent ACV's AI security architecture externally.
Perform additional duties as assigned.

Requirements

Ability to read, write, speak and understand English.
Bachelor's degree in a related field, or commensurate experience.
12+ years of security experience, with deep application security architecture expertise.
15+ years of security experience without a degree.
Hands-on GenAI/LLM security work required, demonstrated through production experience or a verifiable body of work.
2+ years of production AI security experience preferred.
Security architecture experience, owning the enterprise secure-architecture vision for AI systems and application security.
AI/ML security depth, including LLM application threats and model-level threats.
Hands-on technical fluency, including reading and writing code (Python preferred) and personal use of AI security tooling.
Working fluency with OWASP Top 10 for LLM Applications, OWASP Top 10 for Agentic Applications, MITRE ATLAS, and NIST AI RMF.
Experience defining reference architectures and paved-road standards, including for AI-assisted development.
Ability to align engineering and ML leadership to the target architecture.
Application security experience, including OWASP Top 10, secure code review, threat modeling, and SAST/DAST/SCA tooling.
Cloud security experience on AWS, Kubernetes, and infrastructure-as-code.
Familiarity with ML platforms and inference infrastructure (e.g., SageMaker, Bedrock) is a plus.
Comfort working in a fast-paced, cloud-native environment with clear written and verbal communication.
SABSA or equivalent architecture credentials, CCSP or a cloud security specialty are a plus.
Demonstrated body of AI security work (research, tooling, red-team findings, AI CTF results, open-source contributions) carries more weight than any certification.

Skills

Application Security Architecture
GenAI/LLM Security
AI Red-Teaming
Published Research or Tooling
Open-Source Contributions
AI Security Competition Results
Python
Garak
PyRIT
promptfoo
OWASP Top 10 for LLM Applications
OWASP Top 10 for Agentic Applications
MITRE ATLAS
NIST AI RMF
Secure Code Review
Threat Modeling
SAST/DAST/SCA Tooling
Snyk
Checkmarx
GitHub Advanced Security
Burp Suite
AWS
Kubernetes
Infrastructure-as-Code
SageMaker
Bedrock

Location

Remote

Work Type

Full-time

Experience Level

Principal
12+ years
15+ years

Education Level

Bachelor's degree in a related field or commensurate experience

Benefits

Multiple medical plans including a high deductible, low cost health plan
Company-sponsored (paid) Short-Term Disability, Long-Term Disability, and Life Insurance
Comprehensive optional benefits such as Dental, Vision, Supplemental Life/AD&D, Legal/ID Protection, and Accident and Critical Illness Insurance
Generous paid time off options, including uncapped vacation days
The greater of 3 paid sick days or in accordance with the applicable state or local paid sick leave law
6 paid company holidays
2 floating holidays
Parental leave
Bereavement leave
Jury duty leave
Voting leave
Other forms of paid leave as required by applicable law or regulation
Employee Stock Purchase Program
Retirement planning through the Company’s 401(k)

About the Company

ACV is a technology company that has revolutionized how dealers buy and sell cars online, transforming the automotive industry.
ACV Auctions Inc. (ACV) has applied innovation and user-designed, data driven applications and solutions.
We are building the most trusted and efficient digital marketplace with data solutions for sourcing, selling and managing used vehicles with transparency and comprehensive insights.
We are disruptors of the industry.
Our network of brands include ACV Auctions, ACV Transportation, ClearCar, MAX Digital and ACV Capital within its Marketplace Products, as well as, True360 and Data Services.

Equal Opportunity

ACV is committed to an inclusive culture in which every individual is welcomed and empowered to celebrate their true selves.
We achieve this by fostering a work environment of acceptance and understanding that is free from discrimination.
ACV is committed to being an equal opportunity employer regardless of sex, race, creed, color, religion, marital status, national origin, age, pregnancy, sexual orientation, gender, gender identity, gender expression, genetic information, disability, military status, status as a veteran, or any other protected characteristic.
We also consider qualified applicants regardless of criminal histories, consistent with legal requirements.
If you have a disability or special need that requires reasonable accommodation, please let us know.