penetration testing jobs in Toronto

You are as unique as your background, experience and point of view. Here, you’ll be encouraged, empowered and challenged to be your best self. You'll work with dynamic colleagues - experts in their fields - who are eager to share their knowledge with you. Your leaders will inspire and help you reach your potential and soar to new heights. Every day, you'll...

RQ08437 - Security Specialist - Penetration Testing - Senior Responsibilities: Conducts penetration tests, web application vulnerability assessments, code reviews and network vulnerability assessments of all environments or applications related to the OPS province-wide I&IT infrastructure and information resources. Defines, evaluates, and assesses security...

RQ08438 - Security Specialist - Penetration Testing - SeniorJob Openings RQ08438 - Security Specialist - Penetration Testing - Senior the job RQ08438 - Security Specialist - Penetration Testing - SeniorResponsibilities:Conducts penetration tests, web application vulnerability assessments, code reviews and network vulnerability assessments of all environments...

About The Role What if your hacking skills could directly shape how safe and secure AI systems are for millions of users worldwide? We're looking for Penetration Testing Experts to join AI red team engagements - probing, attacking, and stress-testing AI-powered applications and infrastructure to identify vulnerabilities before bad actors do. About The...

A leading cybersecurity firm in Toronto is seeking a Senior Security Specialist to conduct penetration testing and vulnerability assessments across various platforms. The ideal candidate has significant experience in identifying and mitigating security threats, as well as strong analytical and leadership skills. This role requires collaboration with multiple...

About the role As a Senior Security Engineer, you will make an impact by leading the implementation and optimization of Tenzai security solutions while strengthening enterprise Threat & Vulnerability Management (TVM) capabilities. You will be a valued member of the Cyber, Data & Security team and work collaboratively with Engineering, DevOps, and Risk &...

Penetration Testing Coordinator, Security Operations - Payments Client Duration: 6 Months Location: Etobicoke, Hybrid 3x/week Overview: We are seeking a Penetration Testing Coordinator to support an established Security Operations program and coordinate penetration testing engagements from intake through completion. This is not primarily a hands-on...

Practice - CIS - Cloud, Infrastructure, and Security Services About Cloud Infrastructure & Security Services: Cognizant’s Cloud, Infrastructure, and Security Services Practice (CIS), is all about embracing digital transformation by driving core modernization holistically across layers. We help customers transform infrastructure and workplace to meet the...

About The Role What if your hacking skills could directly shape how safe and secure AI systems are for millions of users worldwide? We're looking for Penetration Testing Experts to join AI red team engagements — probing, attacking, and stress-testing AI-powered applications and infrastructure to identify vulnerabilities before bad actors do. This is a...

Leverage your hacking skills to improve AI security as a Remote Penetration Tester with Alignerr. Engage in red team activities that uncover vulnerabilities in AI systems and infrastructure. As a Penetration Testing Expert at Alignerr, you will work on flexible, high-impact projects that directly enhance the safety of AI applications worldwide. This role...

AI Red Team Penetration Tester (AI Security) About The Role What if your hacking skills could directly shape how safe and secure AI systems are for millions of users worldwide? We're looking for penetration testing experts to probe, attack, and stress-test AI-powered applications and infrastructure — identifying vulnerabilities before bad actors do. This...

About Cloud Infrastructure & Security Services: Cognizant's Cloud, Infrastructure, and Security Services Practice (CIS), is all about embracing digital transformation by driving core modernization holistically across layers. We help customers transform infrastructure and workplace to meet the rapidly evolving needs of the digital era. Our holistic approach...

Alignerr is seeking an AI Red Team Penetration Tester to rigorously test AI-powered applications and infrastructure. This remote, hourly contract role emphasizes offensive security expertise to uncover vulnerabilities before adversaries do.You will assess AI/ML pipelines, web, network, and API security, document findings clearly, and contribute to enhancing...

A leading security consultancy in Toronto is seeking a Senior Security Specialist to conduct penetration testing and vulnerability assessments for Ontario's I&T infrastructure. The role requires extensive experience with security methodologies and tools, along with strong analytical and leadership skills. Candidates must have proven experience in identifying...

Central Toronto (Summerhill West / Rathnelly / South Hill / Forest Hill SE / Deer Park), Canada | Posted on 09/29/2026 - City Central Toronto (Summerhill West / Rathnelly / South Hill / Forest Hill SE / Deer Park) - Country Canada Job Description Position: Senior Test Analyst Location: Toronto, ON Job ID#: RQ11510 Duration: 6 Months Role...

ResponsibilitiesProvides advice on the testing strategy, test plans, the selection of testing tools, and the identification of resources required for testing.Plans and organizes testing efforts for large systems in Graphical User Interface (GUI) and non-Graphical User Interface (GUI) environments, including the execution of systems integration tests,...

Systems Testing QA Specialist - Intermediate Toronto, ON, Canada Contract Workspace On-Site Start Date 2026-10-19 Job Type Client Hourly Wage 48-56 End Date 2027-03-31 Job Description Responsibilities - Provides advice on the testing strategy, test plans, the selection of testing tools, and the identification of resources required for...

RQ09396 - Systems Testing/QA Specialist - Intermediate Job Openings RQ09396 - Systems Testing/QA Specialist - Intermediate About the job RQ09396 - Systems Testing/QA Specialist - Intermediate Responsibilities: Provides advice on the testing strategy, test plans, the selection of testing tools, and the identification of resources required for testing Plans...

A leading cybersecurity firm in Canada is seeking a Security Engineer to enhance its offensive and defensive security posture. You will engage in penetration testing for products in a multi-cloud environment (AWS & GCP), manage vulnerabilities, and perform security assessments. Ideal candidates demonstrate expertise in multi-cloud architectures, AI...

RQ08300 - Systems Testing/QA Specialist - SeniorJob Openings RQ08300 - Systems Testing/QA Specialist - SeniorAbout the job RQ08300 - Systems Testing/QA Specialist - SeniorResponsibilities:· Lead QA in development projects and release cycles as an application subject matter expert.Ensure digital applications are fully tested and conform to WCAG standards...