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Added 2 mins ago
M365 Architect
EY
Toronto, ON
Cloud Security: Knowledge of how to protect sensitive information within Microsoft 365 by using security and compliance features is crucial. This includes setting up security policies,…
Added 47 mins ago
T
Engineer I
TD
Mississauga, ON · Toronto, ON
- Full-time
About This Role: We are looking for a Cybersecurity engineer with admin level knowledge and experience working on enterprise Security Information and Event management (SIEM) tools. Although…
Added 1 hour ago
AP
Detection Engineer
Arobas Personnel
Montreal, QC
- Full-time
The Detection Engineer will support the organization’s Splunk-based detection environment, working closely with Incident Response, Cyber Threat Intelligence, SOC, and Red Team stakeholders…
Added 1 hour ago
T
Engineer I
TD
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- Full-time
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Added 1 hour ago
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Added 1 hour ago
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Senior Java Developer
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Software Engineer Internship - Winter 2027
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- $40,000 to $50,000 CAD / year
- Full-time
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Our award-winning software platform is powered by a team of world-class experts in big data, machine learning, security, and scalable infrastructure. Our culture is open, positive,…
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Lead AI.Net Developer
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Guardrail Enforcement & Code Quality: Implement the engineering guardrails, security validations, and code-quality parsers defined by the Lead AI Engineer to ensure safe, compliant, and…
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Senior Identity Security Engineer
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Senior Associate SIEM Implementation
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Added 3 hours ago
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Security Engineer – SIEM, EDR, IAM & Cloud Security
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Design, implement, and maintain security controls across network, cloud, server, endpoint, and application environments.
Added 3 hours ago
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Added 3 hours ago
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DevOps Engineer
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Arobas Personnel

Detection Engineer

Montreal, QC, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 4, 2026
Posting language: English
Posted: Nov 4, 2026

Original job description

Arobas Personnel is looking for an experienced Detection Engineer for a contract opportunity with one of our clients in Montreal.

The Detection Engineer will support the organization’s Splunk-based detection environment, working closely with Incident Response, Cyber Threat Intelligence, SOC, and Red Team stakeholders to strengthen detection coverage and improve the quality of security detections.

Key Responsibilities

🔹 Ensure operational continuity of the Splunk-based detection stack

🔹 Review and implement rule tuning requests from the Incident Response team, including false-positive reduction, logic refinement, and threshold adjustments

🔹 Design, develop, and deploy new Splunk detections based on threat patterns, indicators, and TTPs provided by the CTI team

🔹 Map new and existing detections to MITRE ATT&CK to track detection coverage

🔹 Develop and refine detection content for Purple Team exercises, incorporating identified gaps and post-exercise improvements

🔹 Test and validate detection effectiveness before production deployment, including true-positive validation and noise reduction

🔹 Maintain detection logic under version control and document tuning rationale

🔹 Track and manage work items in Jira

🔹 Participate in handoffs and collaboration sessions with Incident Response, CTI, SOC, and Red Team stakeholders

Key Deliverables

🔹 Tuned and updated Splunk detection rules addressing Incident Response requests, with documented rationale

🔹 New detection use cases covering CTI-identified threat patterns, mapped to MITRE ATT&CK

🔹 Detection content supporting Purple Team exercises, including post-exercise improvements

🔹 Up-to-date documentation of detection logic and coverage gaps

🔹 Work items properly tracked and closed in Jira

Must-Have Skills

🔹 Strong hands-on experience with Splunk, including SPL, correlation searches, dashboards, data models, and detection-as-code workflows

🔹 Proven Detection Engineering experience writing, tuning, and validating SIEM detection rules in a production environment

🔹 Working knowledge of MITRE ATT&CK for threat modeling and coverage mapping

🔹 Familiarity with relevant security telemetry and log sources, including EDR, Windows/Linux/Sysmon, network, and cloud logs

🔹 Experience with Threat Hunting methodologies and CTI-provided IOCs/TTPs, including structured intelligence such as STIX/TAXII or narrative reporting

🔹 Understanding of Incident Response processes and the ability to translate tuning requests into actionable detection rule changes

Nice To Have

🔹 Exposure to Purple Teaming and adversary emulation, including tools or approaches such as Atomic Red Team and Caldera

🔹 Scripting skills with Python and/or PowerShell for detection logic, automation, and tooling

🔹 Experience with Git for managing detection content as code

🔹 Experience with Jira in an Agile or operational environment

🔹 Ability to clearly document technical decisions and rationale for handoff to technical teams and management

Id

10059

Emplacement

Montréal

Durée De L'emploi

Temps Plein

Nombre D'emplois Vacants

1

Date Limite De Dépôt

Dernière mise à jour:

26-11-04 15:21

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More about this job

Responsibilities

Maintain and improve the Splunk-based detection environment by tuning existing rules, developing new detections from threat intelligence, and validating detection effectiveness before deployment. Map detection coverage to MITRE ATT&CK, support Purple Team exercises, document detection logic, and coordinate work with security teams using Jira.

Requirements

The role requires hands-on Splunk and production SIEM detection engineering experience, including writing, tuning, and validating detection rules. Candidates should understand MITRE ATT&CK, threat hunting, security telemetry, CTI, and Incident Response; Purple Teaming, scripting, Git, and Jira experience are advantageous.

Skills

Splunk
Search Processing Language (SPL)
Detection Engineering
SIEM Detection Rules
MITRE ATT&CK
Threat Hunting
Cyber Threat Intelligence
Incident Response
Security Telemetry
EDR
Windows and Linux Logs
Sysmon
Network and Cloud Logs
Purple Teaming
Python
PowerShell

Visa sponsorship

Not detected in the job text

Keywords

Splunk
Search Processing Language (SPL)
Correlation Searches
Dashboards
Data Models
Detection As Code
SIEM
MITRE ATT&CK
EDR
Windows
Linux
Sysmon
Network Logs
Cloud Logs
Threat Hunting
Cyber Threat Intelligence
Indicators Of Compromise (IOCs)
Tactics, Techniques, And Procedures (TTPs)
STIX/TAXII
Incident Response
Purple Teaming
Adversary Emulation
Atomic Red Team
Caldera
Python
PowerShell
Git
Jira
False-Positive Reduction
Detection Validation

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