At EY, we’re all in to shape your future with confidence.
We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go.
Join EY and help to build a better working world.
The opportunity
Ernst & Young is seeking junior and intermediate-level technical security professionals with hands-on expertise in Microsoft Sentinel and Microsoft Defender to support our Managed Detection and Response (MDR) services within a Security Operations Center (SOC) environment.
This role is designed for an experienced Tier 1 / Tier 2 SOC Analyst who performs threat detection, investigation, and response activities.
The successful candidate will operate in a client-facing MSSP environment and will contribute directly to the quality, effectiveness, and continuous improvement of EY’s MDR services.
This job posting relates to an existing vacancy within our organization.
Your key responsibilities:
Working with our technical team and clients the candidate will be responsible for:
Key Skills for This Role
Microsoft SentinelMicrosoft DefenderKQL
Full Job Posting
Job description
At EY, we’re all in to shape your future with confidence.
We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go.
Join EY and help to build a better working world.
The opportunity
Ernst & Young is seeking junior and intermediate-level technical security professionals with hands-on expertise in Microsoft Sentinel and Microsoft Defender to support our Managed Detection and Response (MDR) services within a Security Operations Center (SOC) environment.
This role is designed for an experienced Tier 1 / Tier 2 SOC Analyst who performs threat detection, investigation, and response activities. The successful candidate will operate in a client-facing MSSP environment and will contribute directly to the quality, effectiveness, and continuous improvement of EY’s MDR services.
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This job posting relates to an existing vacancy within our organization.
Your key responsibilities:
Working with our technical team and clients the candidate will be responsible for:
Security Monitoring and Incident Response
Perform security monitoring, triage, and investigation of alerts generated from Microsoft Sentinel and Microsoft Defender platforms using documented playbooks.
Escalate confirmed or complex incidents, including suspected compromise, lateral movement, persistence mechanisms, and data exfiltration scenarios.
Perform investigations using log analytics, endpoint telemetry, identity signals, and cloud-native audit logs.
Validate, scope, and document security incidents, including root cause analysis and impact assessment.
Assist with containment and recovery under senior guidance.
Detection Engineering and Use Case Development
Support tuning and maintenance of Sentinel analytics rules.
Assist with false positive reduction and improving signal quality across Sentinel and Defender data sources.
Document detection gaps
Contribute to use case development under guidance to enhance detections, hunting queries, and alert enrichment.
Threat Hunting
Support threat hunting activities
Identify anomalous or suspicious activity that may not trigger existing detections.
Document hunting hypotheses, findings, and recommendations for detection improvements or control gaps.
Client Engagement and Technical Advisory
Communicating incident findings clearly
Participating in client calls when required
Supporting onboarding and steady-state operations
Support senior team members in identifying logging, configuration improvements.
Support onboarding and steady-state operations for MDR clients within a managed services context.
Operational Excellence
Contribute to playbooks and procedural improvements.
Participate in knowledge sharing and case reviews.
Assist with service quality improvements, detection maturity, and operational consistency across clients.
Ensure investigations and responses align with applicable regulatory, contractual, and evidentiary requirements.
Key Requirements:
Proven experience operating in a SOC or MSSP environment at a Tier 1 or Tier 2 level.
Hands-on expertise with Microsoft Sentinel, including analytics rules, KQL, workbooks, and incident investigations.
Experience with Microsoft Defender technologies, including Defender for Endpoint and identity-related signals.
Exposure to investigations across cloud, endpoint, and identity domains.
Working understanding of attack techniques, threat actor behaviors, and incident response methodologies.
Ability to manage multiple investigations simultaneously while maintaining investigation quality and documentation.
Strong written and verbal communication skills, with the ability to explain technical findings to security-focused audiences.
Proficiency in French, including Quebec French, is desired for client facing engagements.
Qualifications:
Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related discipline.
Relevant certifications such as: o Microsoft Certified: Azure Security Engineer Associate o Microsoft Sentinel specialization o CISSP, GCED, GCIA, or similar (preferred, not required)
Minimum 1-2 years of experience in cybersecurity operations, with significant time spent in incident response and security monitoring roles.
Prior experience in a client-facing or managed services environment is strongly preferred
EY reports salary ranges in accordance with applicable provincial pay transparency legislation. Individual salaries within the anticipated salary ranges noted below are determined through a wide variety of factors including but not limited to internal equity, education, relevant experience, knowledge, and applicable skill sets.
Toronto, Calgary, Vancouver : $65,500 - $99,000
Ottawa, St. John's : $62,500 - $94,000
Halifax, Saint John, Dieppe, Victoria : $59,000 - $89,000
Inclusiveness at EY Inclusiveness is the heart of who we are and how we work. We’re committed to fostering an environment where differences are valued, policies and practices are equitable, and our people feel a sense of belonging. We embrace diversity and are committed to combating systemic racism, advancing gender equity and women in leadership, advocating for the 2SLGBTQIA+ community, promoting our neuroinclusion and accessibility initiatives, and are dedicated to amplifying the voices of Indigenous peoples (First Nations, Inuit, and Métis) nationally as we strive towards reconciliation. Our diverse experiences, abilities, backgrounds, and perspectives make our people unique and help guide us. Because when people feel free to be their authentic selves at work, they bring their best and are empowered to build a better working world. Learn about our commitment to Inclusiveness at https://www.ey.com/en_ca/about-us/corporate-responsibility/equity
EY | Building a better working world
EY is building a better working world by creating new value for clients, people, society and the planet, while building trust in capital markets.
Enabled by data, AI and advanced technology, EY teams help clients shape the future with confidence and develop answers for the most pressing issues of today and tomorrow.
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