Glocomms is partnered with a leading North American quantitative trading firm to identify a Senior Information Security Analyst to join their Montreal-based security team. This individual will play a critical role in supporting enterprise IT operations, end-user technology services, and information security initiatives across a fast-paced trading environment. The successful candidate will work closely with internal stakeholders, technology teams, and external security providers to strengthen the firm's security posture while ensuring a seamless user experience.

Primary Responsibilities

Provide advanced IT support and helpdesk services for desktop, endpoint, and infrastructure-related issues across a global user base. Support and maintain security controls, monitoring platforms, and operational processes that protect the firm's technology environment. Monitor security alerts, dashboards, and ticketing systems, performing real-time analysis and triage of security events and incidents. Investigate, escalate, and coordinate response efforts for cybersecurity incidents, including phishing attempts, malware activity, network-based threats, and suspected compromises. Conduct event log analysis, threat detection activities, and security investigations utilizing SIEM platforms, IDS/IPS technologies, and related monitoring tools. Identify security gaps and recommend countermeasures, mitigating controls, and remediation strategies to improve overall security posture. Collaborate with third-party security providers, infrastructure teams, and business stakeholders to support incident management and security operations. Assist with network and infrastructure troubleshooting involving routers, switches, TCP/IP networking, DNS, HTTP, and other core networking protocols. Support security reporting, documentation, and communication to technical and non-technical stakeholders. Participate in security operations coverage, including occasional after-hours or weekend support as required.

Key Qualifications

5+ years of experience in Information Security, Cybersecurity, IT Operations, Help Desk, Systems Administration, or a related technical discipline. Strong understanding of enterprise IT environments, end-user support, and infrastructure operations within mid-to-large-scale organizations. Experience monitoring and investigating security events within a Security Operations Center (SOC) or similar security operations environment. Hands-on experience with SIEM tools, security monitoring platforms, incident response processes, and threat detection technologies. Solid knowledge of network security concepts, IDS/IPS, host-based firewalls, data loss prevention (DLP), and common attack methodologies. Strong understanding of networking fundamentals, including TCP/IP, DNS, HTTP, IP addressing, routers, switches, and network troubleshooting. Experience analyzing phishing campaigns, malware activity, intrusion attempts, and other cybersecurity threats. Familiarity with scripting and automation using Python, Bash, or PowerShell. Excellent analytical, problem-solving, and security investigation skills with the ability to assess and prioritize risks effectively. Strong written and verbal communication skills, proven stakeholder management abilities, and the capacity to work collaboratively across technical and business teams.

This is an excellent opportunity to join a highly regarded quantitative trading organization where technology and security are core to the firm's success. The role offers exposure to complex enterprise infrastructure, cybersecurity operations, and business-critical systems in a collaborative and high-performance environment. This position is based in Montreal and requires employees to work onsite 2-3 days per week. No C2C/C2H.