Senior IT Security Computer Support Specialist

Location: Ottawa, ON Client: Department of National Defence (DND) Clearance: Secret (minimum), Top Secret preferred About The Role We are seeking two Senior IT Security Technical Support Specialists to support DND environments. These resources will provide advanced technical troubleshooting, secure system support, and implementation of complex security requirements across enterprise networks and applications. General Responsibilities: Coordinating emerging technology application specifications Serving as a user support liaison between vendors, IT technicians, and end‑user departments Providing training expertise and direction in emerging technology or special application support Emulating or reproducing technical problems encountered by users Providing advice and training to users in response to identified difficulties Recommending and implementing complex security requirements Providing business systems, network, and Internet support to users Collecting, organizing, and maintaining a problems/solutions log Verifying accuracy and completeness of work performed Designing, configuring, and deploying server‑based file systems and applications Identifying, researching, and resolving complex technical problems Recommending new products or processes to enhance business activities Planning or participating in department‑wide system upgrades Requirements ESSENTIAL REQUIREMENTS All candidates must meet the following mandatory criteria: Education Certificate, diploma, or degree in Computer Science or a related field from a recognized Canadian post‑secondary institution Experience Minimum 24 months of relevant experience performing duties aligned to the Senior Technical Support Specialist category Additional Security‑focused Requirements Candidates must also demonstrate experience in security‑specific technical support, including: Implementing or supporting complex security controls (IAM, MFA, RBAC, encryption, hardening baselines) Troubleshooting and resolving security‑related incidents, authentication failures, or access issues Supporting secure network, server, and application environments Participating in security‑driven upgrades, patch cycles, and configuration deployments Working with security vendors, internal security teams, or DND security stakeholders Maintaining security logs, audit trails, and incident documentation Providing security‑focused user training (secure access, MFA onboarding, cyber hygiene) Reproducing or validating security‑related technical problems Supporting vulnerability assessments, remediation activities, or compliance checks Ideal Candidate Profile Strong understanding of defence‑sector security requirements Experience supporting classified or secure environments Excellent communication skills with both technical and non‑technical users Ability to work independently in high‑security, high‑availability environments

The role involves providing advanced technical troubleshooting and secure system support for DND environments. Responsibilities include coordinating technology specifications, user support, training, and implementing complex security requirements.

Candidates must have a certificate, diploma, or degree in Computer Science or a related field and a minimum of 24 months of relevant experience. Experience in security-specific technical support and a strong understanding of defense-sector security requirements are essential.

Identified from the job description. Confirm important requirements above.

• Technical Support
• Security Controls
• Troubleshooting
• User Training
• Network Support
• Incident Documentation
• Vulnerability Assessments
• Cyber Hygiene
• IAM
• MFA
• RBAC
• Encryption
• Hardening Baselines
• Secure Environments
• Communication Skills
• Problem Solving

• Technology
• Government & Public Sector
• Security & Safety
• Consulting

Minimum education

Professional degree

Minimum experience

2+ years

Apply by

Oct 17, 2026

Posting language

English

Working hours

40 hours per week

Seniority

Mid-Senior level

Application method

Direct apply is available