Security Associate Jobs in Toronto, ON (NOW HIRING)

Are you excited by the opportunity to shape how AI-powered products are designed and secured at enterprise scale?

Join Thomson Reuters as anAI Security Associate Architect, where you will help define secure architecture for products and systems used by millions of professionals worldwide.

As anAI Security Associate Architect, you will join Thomson Reuters' Security Architecture team, a senior group setting the technical direction for how we design and secure our products and enterprise systems end-to-end.

You will lead architecture and design reviews, threat modeling, and Secure AI assessments across our product portfolio, with a focus on how we build, ship, and run AI-powered features and the platforms that support them.

This is a hands-on, influential role. You will partner with product engineering, platform engineering, information security, and risk management teams to ensure security is shaped early, designed in, and not bolted on. You will work alongside domain architects across the organization and contribute to our multi-year Security Architecture direction.

Location:Toronto, hybrid

About the Role

In this opportunity asAI Security Associate Architect, you will:

• Architect security across products and platformsby leading security architecture reviews and design consultations across Thomson Reuters' product portfolio.

• Develop reference architectures and secure design patternsincluding architecture decision records, guardrails, and implementation guidance that engineering teams can adopt directly.

• Lead Secure AI architectureby conducting Secure AI design reviews for AI-powered products, features, platforms, and internal AI development workflows.

• Build and evolve threat models for AI systems, including risks related to prompt injection, model and data integrity, agent and tool-use security, AI supply chain, RAG, LLMs, model serving, AI gateways, and MCP-based tools.

• Drive threat modeling and risk-informed designacross web, API, mobile, cloud, container, Kubernetes, and modern application architectures.

• Partner with engineering as a trusted technical advisoron new initiatives, architectural pivots, high-impact features, vendor decisions, and customer-facing architecture decisions.

• Strengthen the Security Architecture practiceby improving knowledge bases, review templates, decision records, and mentoring product and platform engineers on secure design.
  

About You

You're a fit for the role ofAI Security Associate Architectif your background includes:

• 7+ years of experience in security architecture, product security, application security, or cloud security engineering, with hands-on architectural ownership.

• Demonstrated experience leading architecture and design reviews across multiple products or platforms.

• Hands-on expertise with at least one major cloud platform, such as AWS, Azure, or Google Cloud, including identity, networking, secrets management, data protection, and logging.

• Practical experience securing modern application architectures, including APIs, microservices, containers, Kubernetes, and CI/CD.

• Working knowledge of GenAI and LLM security, including prompt injection, model and data integrity, agent and tool-use security, AI supply chain considerations, and secure AI design patterns.

• Strong understanding of core security principles, including cryptography, public key infrastructure, authentication and authorization, OAuth 2.0, and network security protocols.

• Ability to engage deeply with technical teams, including reading and discussing code in Python, Go, Java, or similar languages when an architecture review requires it.

• Strong threat modeling skills and the judgment to apply frameworks pragmatically, including OWASP ASVS, NIST CSF, NIST SSDF, OWASP LLM Top 10, and MITRE ATLAS.

• Excellent written and verbal communication skills, with the ability to influence senior engineers and translate complex security trade-offs into clear recommendations.
  

Preferred qualifications:

• Hands-on experience with Google Cloud security, such as Vertex AI, IAM, VPC Service Controls, and Security Command Center.

• Experience reviewing or designing AI/ML platforms such as Vertex AI, SageMaker, Bedrock, Azure AI, or self-hosted environments, including model lifecycle and data pipeline security.

• Experience with AI red teaming, adversarial ML evaluation, or LLM security testing.

• Experience with software supply chain security, including SBOM, SLSA, provenance, attestation, and workload identity.

• Familiarity with security frameworks such as OWASP ASVS/SAMM, NIST CSF and SSDF, BSIMM, OWASP LLM Top 10, and MITRE ATLAS.

• Experience with Infrastructure as Code, such as Terraform or CDK, modern CI/CD, and infrastructure security at scale.

• Relevant security certifications such as OSCP, OSWE, CKA/CKS, GCP Professional Cloud Security Engineer, AWS Security Specialty, or CCSP.

• Industry contributions such as open-source projects, conference talks, working group participation, including CoSAI or OWASP, research, or teaching.

#LI-LP2

Replacement: This position is open due to an existing vacancy to support our evolving business needs.

What's in it For You?

• Hybrid Work Model: We've adopted a flexible hybrid working environment (2-3 days a week in the office depending on the role) for our office-based roles while delivering a seamless experience that is digitally and physically connected.

• Flexibility & Work-Life Balance: Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.

• Career Development and Growth: By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow's challenges and deliver real-world solutions. Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.

• Industry Competitive Benefits: We offer comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.

• Culture: Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.

• Social Impact: Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives.

• Making a Real-World Impact:We are one of the few companies globally that helps its customers pursue justice, truth, and transparency. Together, with the professionals and institutions we serve, we help uphold the rule of law, turn the wheels of commerce, catch bad actors, report the facts, and provide trusted, unbiased information to people all over the world.

Our use of AI within the recruitment process Thomson Reuters utilizes Artificial Intelligence (AI) to support parts of our global recruitment process. Unless you opt-out, our AI system will assess the information provided by you and compare it to the requirements listed for the role, and present the result to our recruitment personnel for further review. The AI system acts as a supporting tool, but there is always a human making the decision if you will be considered for the role

Thomson Reuters complies with local laws that require upfront disclosure of the expected pay range for a position. The base compensation range varies across locations. For Ontario, Canada, the base compensation range for this role is $140,000 CAD - $175,000 CAD. Base pay is positioned within the range based on several factors including an individual's knowledge, skills and experience with consideration given to internal equity. Base pay is one part of a comprehensive Total Reward program which also includes flexible and supportive benefits and other wellbeing programs. This role may also be eligible for an Annual Bonus based on a combination of enterprise and individual performance.

About Us

Thomson Reuters informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. We serve professionals across legal, tax, accounting, compliance, government, and media. Our products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency. Reuters, part of Thomson Reuters, is a world leading provider of trusted journalism and news.

We are powered by the talents of 26,000 employees across more than 70 countries, where everyone has a chance to contribute and grow professionally in flexible work environments. At a time when objectivity, accuracy, fairness, and transparency are under attack, we consider it our duty to pursue them. Sound exciting? Join us and help shape the industries that move society forward.

As a global business, we rely on the unique backgrounds, perspectives, and experiences of all employees to deliver on our business goals. To ensure we can do that, we seek talented, qualified employees in all our operations around the world regardless of race, color, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under applicable law. Thomson Reuters is proud to be an Equal Employment Opportunity Employer providing a drug-free workplace.

We also make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law. More information on requesting an accommodation here.

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More information about Thomson Reuters can be found on thomsonreuters.com