Senior Security Engineer Jobs in Toronto, Ontario

17 open Senior Security Engineer jobs in Toronto, Ontario at 13 companies, including Okta, PagerDuty and Fullscript. Updated daily from company career pages.

Okta

Okta is a management platform that secures critical resources from cloud to ground for workforce and customers.

PagerDuty

PagerDuty is an operations performance platform that helps monitor IT infrastructure, detect issues, and resolve incidents.

Fullscript

Fullscript is a supplement dispensing platform and patient adherence tool that supports practitioners at the point of care and beyond.

Doppel

Doppel is the modern digital risk protection platform. It protects brands against phishing, account takeovers, and other digital threats.

Amazon

Amazon is an e-commerce website for consumers, sellers, and content creators.

Braze

Braze is a customer engagement platform that enables customer-centric interactions between brands and consumers.

Cohere

Cohere provides access to advanced Large Language Models and NLP tools through one easy-to-use API.

Clio

Clio is a suite of web-based tools that help law firms in practice management and client collaboration.

Relay

Relay is a digital bank designed for growing businesses.

TripleLift

TripleLift is the programmatic technology company for native, branded content and OTT.

Intact Financial Corporation

Intact Financial Corporation is an insurance company that provides property and casualty insurance products to individuals and businesses.

Brookfield Renewable Partners

Brookfield Renewable Partners owns and operates assets in the property, renewable power, infrastructure and private equity sectors.

Smile CDR

Smile CDR specializes in delivering fast, secure, compliant data infrastructures to enable for data intensive sectors such as healthcare.

Updated 2026-10-10.