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Added 1 month ago
Software Development Engineer, Early Career - 2026
Amazon
Vancouver, BC
Leverage and contribute to the development of GenAI and AI-powered tools to enhance development productivity while staying current with emerging technologies.
Added 1 month ago
PC
Financial Instruments Valuation and Market Risk Manager
Pwc Canada
Toronto, ON
- Full-time
Assisting in the development of leading edge GenAI solutions that transform the delivery of these services, and provide GenAI advice to our clients
Added 1 month ago
PC
Credit Risk Modelling Senior Associate (Bilingual FR/EN)
Pwc Canada
Montreal, QC
- Full-time
…challenge and proposed business solution on the topics such as GenAI, cloud, climate risk modeling…
Added 1 month ago
AI Application Security Architect
ACV
Toronto, ON
…servers, and autonomous agents, with guardrails that preserve developer velocity across an API-first engineering…
Added 2 months ago
GD
Data Scientist I
Groupe Dynamite
Mont-Royal, QC
- Full-time
In this role you will be part of a self managed team responsible for building and driving forward our core demand forecasting, recommendation engines and GenAI solutions.
Added 2 months ago
TH
Manager, Data Science (Askuity division)
The Home Depot Canada
Toronto, ON
- Full-time
Lead and mentor a team of data scientists in developing AI-powered solutions, including Generative AI (GenAI), for Fusion.
Added 23 days ago
E
Agentic AI Optimization Developer
Equifax
Toronto, ON · CAN - Ontario - Toronto
- Full-time
Advanced Debugging & Automation: Strong background in writing automated test scripts (Python-heavy) and using tracing/observability concepts to debug cascading errors in asynchronous,…
Added 23 days ago
E
Agentic AI Developer
Equifax
Toronto, ON · CAN - Ontario - Toronto
- Full-time
…human intervention. We are seeking a highly skilled Agentic AI Developer to be the core engineer constructing our next-generation AI…
Added 25 days ago
GS
Senior Software Engineer
Guidewire Software
Mississauga, ON · Toronto, ON
- Full-time
Your work will directly support PDO’s mission to embed GenAI across our products and improve operational excellence, contributing to Guidewire’s broader goal of transforming how the world’s…
Added 1 month ago
TT
AI/ML Engineer
TC Transcontinental
Mississauga, ON
- Full-time
Added 2 months ago
A
Senior Platform Engineer
AutoTrader.ca
Toronto, ON
- Full-time
…centralized Kubernetes, managed CI/CD, project templates, and the developer tooling that runs on top of AWS. Our customers are developers. We live "you build it, you run it" and we invest…
Added 2 months ago
GD
Data Scientist I
Groupe Dynamite, Inc Garage
Mont-Royal, QC · Ville Mont-Royal, Quebec
- Full-time
In this role you will be part of a self managed team responsible for building and driving forward our core demand forecasting, recommendation engines and GenAI solutions.
Added 1 month ago
B
Senior Manager Data Engineering
BMO
Toronto, ON · SCC
- Full-time
Hands on experience in one or more of SQL, NoSQL, Python, Spark, Scala, code optimization, debugging
Added 1 month ago
DT
Senior Solutions Principal
Dell Technologies
Toronto, ON
- Full-time
…development, prompt engineering) and tools/languages such as Python, Spark, notebooks, and ML frameworks (e.g., scikit-learn, MLflow, TensorFlow/PyTorch, LangChain, LlamaIndex at a…
Added 2 months ago
S
Sr. Regression Tester with AI Exp
Synechron
Toronto, ON
- $110,000 to $120,000 CAD / year
- Full-time
…functionality of our banking applications. Your expertise in AI, GenAI, Java, Playwright, Selenium, and Javascript will be essential in creating robust test frameworks and ensuring seamless…
Added 1 month ago
P
Credit Risk Modelling Senior Associate (Bilingual FR/EN)
PwC
Montreal, QC
- Full-time
…challenge and proposed business solution on the topics such as GenAI, cloud, climate risk modeling…
Added 1 month ago
MC
Data Scientist
Meridian Credit Union
Toronto, ON
- Full-time
Develop GenAI and LLM models. Get direction from and technical guidance from more senior members of the team
Added 2 months ago
M
Applied AI, Forward Deployed Machine Learning Engineer
Mistral
Montreal, Quebec
- Full-time
Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems - across high-stakes…
Added 2 months ago
M
Applied AI, Technical Lead, Forward Deployed AI Engineer
Mistral
Montreal, Quebec
- Full-time
Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems - across high-stakes…
Added 2 months ago
TA
Lead AI Engineer
Tiger Analytics Inc.
Remote, Canada
- Remote
AI/ML: GenAI, LLMs, Agentic AI, Multi-Agent Systems, RAG, Prompt Engineering, AI Guardrails, MLOps.
Added 1 month ago
Senior Software Developer, Manufacturing Data Solutions (Python/SQL)
Sonova AG
Kitchener, ON
As a Senior Software Developer, you will apply your expertise to deliver reliable and scalable data-oriented solutions in a collaborative global environment.
Added 1 month ago
Senior Platform Engineer
AutoTrader.ca
Toronto, ON
…centralized Kubernetes, managed CI/CD, project templates, and the developer tooling that runs on top of AWS. Our customers are developers. We live "you build it, you run it" and we invest…
Added 3 months ago
BC
BCG Platinion | Senior AI Tech Architect - AI Platforms
Boston Consulting Group (BCG)
Toronto, Ontario
- $160,000 CAD / year
- Full-time
Added 3 months ago
S
Architecte en IA agentique - Intelligence Engineering / Agentic AI - Sr. Architect - Intelligence Engineering
Slalom
Montreal, Quebec
- Full-time
Développer en Python et, lorsque pertinent, dans d’autres langages afin de livrer des systèmes d’apprentissage automatique, des API, des harnais d’évaluation, des pipelines de récupération,…
Added 2 months ago
M
Principal Data Scientist
Mastercard
Toronto, ON
- Full-time
Proficiency in Python, ML frameworks (Scikit-learn, PyTorch, TensorFlow), SQL, Spark, and Azure ML/Snowflake.

ACV

AI Application Security Architect

Toronto, ON, Canada

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Job details

Experience: 12+ years' of security experience, 15+ years' without degree, including deep application security architecture.
Posting language: English
Posted: Aug 13, 2026

Original job description

If you are looking for a career at a dynamic company with a people-first mindset and a deep culture of growth and autonomy, ACV is the right place for you! Competitive compensation packages and learning and development opportunities, ACV has what you need to advance to the next level in your career. We will continue to raise the bar every day by investing in our people and technology to help our customers succeed. We hire people who share our passion, bring innovative ideas to the table, and enjoy a collaborative atmosphere.

Who we are:

ACV is a technology company that has revolutionized how dealers buy and sell cars online. We are 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 that were once unimaginable. We are disruptors of the industry and we want you to join us on our journey. 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.

At ACV we focus on the Health, Physical, Financial, Social and Emotional Wellness of our Teammates and to support this we offer:

Company Sponsored (paid) Healthcare, Dental, Vision, Life/AD&D, Short-Term and Long-Term Disability.

Comprehensive additional optional benefits such Critical Illness and Supplemental Life/AD&D.

All insurance benefits go into effect on your date of hire.

Generous Parental Leave Top-Up Pay and Vacation Programs.

Employee Stock Purchase Program with additional opportunities to earn stock in the company.

Retirement planning through the Company’s RRSP.

Who we are looking for:

ACV Auctions is hiring an Principal Architect, Product Security to secure how we build and ship AI, as part of the Product Security team. ACV's marketplace runs on AI that customers stake real money on: computer vision models that grade vehicle condition, pricing models that inform lending decisions, and LLM features across our products. You will define how that surface gets protected, and how our engineers use AI coding assistants and agents without trading away security. You will help engineering deliver secure applications across ACV's marketplace, protecting sensitive dealer, consumer, vehicle, and payment data.

Company-wide security architect for AI systems and the applications built around them. Defines ACV's target-state secure architecture, reference architectures, and standards for machine learning and LLM-powered systems, and guides the highest-risk AI and application designs across engineering. A P6 architecture-track role alongside Principal Engineer on the Product Security Career Ladder. Company / multi-year scope; owns AI and application security architecture and standards; sets direction on the most consequential design decisions.

Focus areas: this role spans AI/ML security and application security. It is a technical architecture role. ACV's AI Governance function owns policy, risk registers, and regulatory alignment; this role owns the technical controls and architecture that make those policies real in production systems.

What you will do:

Actively and consistently support all efforts to simplify and enhance the customer experience.
Define ACV's target-state secure architecture and reference patterns for AI/ML systems: LLM features, retrieval pipelines, agentic workflows, and the computer vision models behind vehicle condition and pricing.
Protect the integrity of ACV's vision-based condition and pricing pipeline against adversarial inputs and manipulated or AI-generated imagery, partnering with fraud and inspection teams on detection and image-provenance controls.
Set secure-by-default standards adopted across engineering for AI development: prompt injection defense, output handling, tool and agent permissioning, and model and training-data supply chain security.
Threat model and review the highest-risk AI and application designs, applying frameworks such as MITRE ATLAS and the OWASP Top 10 lists for LLM and Agentic Applications.
Own the security architecture for AI-assisted engineering: coding assistants, MCP servers, and autonomous agents, with guardrails that preserve developer velocity across an API-first engineering organization.
Stand up ACV's AI security testing capability: adversarial testing and red-teaming of models and LLM features, evaluation harnesses, and runtime guardrails, making deliberate build-vs-buy decisions.
Advise engineering and security leadership on multi-year AI security strategy, and partner with AI governance to translate policy into enforceable technical controls.
Scale AI security expertise across engineering, including through ACV's Security Champions program; mentor Staff and Principal engineers; and represent ACV's AI security architecture externally.
Perform additional duties as assigned.

What you will need:

Ability to read, write, speak and understand English.
Bachelor's degree in a related field, or commensurate experience.
12+ years' of security experience, 15+ years' without degree, including deep application security architecture.
Hands-on GenAI/LLM security work required, demonstrated through production experience or a verifiable body of work: AI red-team engagements, published research or tooling, open-source contributions, or AI security competition results.
2+ years of production AI security experience preferred.
Security architecture: owns the enterprise secure-architecture vision for AI systems and application security.
AI/ML security depth: LLM application threats (prompt injection, insecure output handling, data leakage through retrieval, excessive agency in agents and tools) and model-level threats (poisoning, evasion, extraction, malicious pre-trained models).
Hands-on technical fluency: reads and writes code (Python preferred) and has personally used AI security tooling (e.g., Garak, PyRIT, promptfoo, or equivalent) rather than only evaluating vendors.
Frameworks: working fluency with the OWASP Top 10 for LLM Applications, the OWASP Top 10 for Agentic Applications, MITRE ATLAS, and NIST AI RMF, and the ability to turn them into standards engineers actually follow.
Standards and patterns: defines reference architectures and paved-road standards, including for AI-assisted development.
Influence: aligns engineering and ML leadership to the target architecture.
Application security (commensurate with level): OWASP Top 10, secure code review, threat modeling, and SAST/DAST/SCA tooling (e.g., Snyk, Checkmarx, GitHub Advanced Security, Burp Suite).
Cloud security (commensurate with level): cloud-native security on AWS, Kubernetes, and infrastructure-as-code; familiarity with ML platforms and inference infrastructure (e.g., SageMaker, Bedrock) a plus.
Comfort working in a fast-paced, cloud-native environment with clear written and verbal communication.
Illustrative credentials (a plus, not required): SABSA or equivalent architecture credentials, CCSP or a cloud security specialty. A demonstrated body of AI security work (research, tooling, red-team findings, AI CTF results, open-source contributions) carries more weight than any certification; the AI security credential market is not yet mature.

Our Values

Trust & Transparency | People First | Positive Experiences | Calm Persistence | Never Settling

At ACV, we are 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.

For information on our collection and use of your personal information, please see our Privacy Notice.

No immigration or work visa sponsorship provided for this position.

Compensation: The compensation range for this position is listed in the "Job Details" section at the bottom of this posting. Please note that final compensation will be determined based upon the applicant's relevant experience, skillset, location, business needs, market demands, and other factors as permitted by law.

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More about this job

Responsibilities

The AI Application Security Architect will define the target-state secure architecture for AI/ML systems and LLM-powered features across the marketplace. They will also lead adversarial testing, threat modeling, and the implementation of technical controls to protect sensitive data and model integrity.

Requirements

Candidates must have 12+ years of security experience with deep expertise in application security architecture and hands-on production experience in GenAI/LLM security. A bachelor's degree in a related field is preferred, though commensurate experience is accepted.

Skills

AI Security
Application Security
Machine Learning Security
LLM Security
Threat Modeling
Python
Cloud Security
AWS
Kubernetes
Infrastructure-as-Code
Prompt Injection Defense
Red-Teaming
Security Architecture
SAST
DAST
SCA

Benefits

Healthcare
Dental
Vision
Life Insurance
AD&D Insurance
Short-Term Disability
Long-Term Disability
Critical Illness Insurance
Parental Leave
Vacation Programs
Employee Stock Purchase Program
Retirement Planning

Visa sponsorship

Not detected in the job text

Keywords

AI Security
Application Security
LLM
Machine Learning
Threat Modeling
Python
AWS
Kubernetes
Infrastructure-as-Code
Garak
PyRIT
Promptfoo
OWASP Top 10
MITRE ATLAS
NIST AI RMF
Snyk
Checkmarx
GitHub Advanced Security
Burp Suite
SageMaker
Bedrock
Computer Vision
Red-Teaming
Security Champions
Data Privacy
API-first
Cloud-native
SABSA
CCSP
AI Governance

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