About the Company Act Digital is an international technology and cybersecurity consulting company supporting major organizations across digital transformation, cyber defense and security operations.

Within our cybersecurity activities, we support large enterprise and financial-sector clients on topics including:

Detection engineering

SOC operations

Incident response

Offensive security

Purple teaming

Threat-driven defense improvement

We are currently looking for a Detection Engineer to join a major financial-sector environment in Montreal. About the Role

As a Detection Engineer, you will help improve and validate cybersecurity detection capabilities against modern attacker techniques.

This role combines detection engineering, purple teaming and offensive validation activities. The objective is not only to create detections, but also to continuously test and improve their effectiveness against realistic attack scenarios. You will work closely with SOC, Incident Response and Security Engineering teams to strengthen detection coverage and defensive maturity across the environment.

Main responsibilities include

Reviewing and improving existing detection use cases

Developing new detection logic and behavioral analytics

Validating detections through offensive testing and adversary simulation

Identifying detection gaps across endpoint, identity, network and cloud environments





Simulating attacker techniques mapped to MITRE ATT&CK;

Improving detection quality and reducing false positives

Supporting continuous improvement of monitoring and response capabilities Qualifications

3+ years of experience in cybersecurity

Experience in Detection Engineering, Threat Detection, SOC or Purple Teaming

Hands-on experience with offensive security techniques or adversary simulation

Experience working in enterprise or regulated environments

Solid understanding of modern attack techniques and intrusion methodologies Required Skills

SIEM and EDR technologies

Detection use case development and tuning

MITRE ATT&CK; framework

Log analysis and event correlation

Threat detection methodologies

Offensive security fundamentals

Scripting skills (Python, PowerShell and/or Bash)

Windows security and Active Directory knowledge

Strong analytical and investigation capabilities Preferred Skills

Experience in financial or highly regulated environments

Experience with purple teaming or adversary simulation

Experience with detection-as-code methodologies

Knowledge of threat hunting methodologies

Familiarity with Windows internals, Active Directory and cloud environments

Knowledge of modern attack chains, lateral movement and privilege escalation techniques

📌 Cybersecurity Detection Engineer / Purple Team (Montreal)
🏢 act digital
📍 Montreal