administrateur principal de système.

Reporting directly to the IT Director, the Infrastructure & Cybersecurity Lead serves as the second most senior technical authority within a 5-person team, acting as the primary backup for the Director. This position is tailored for an experienced IT professional (8+ years) eager to move beyond pure daily operations into architectural planning and strategic decision-making. You will oversee Azure cloud optimizations, strengthen the cybersecurity posture, define governance policies (MS Entra ID), and manage external service providers. The ideal candidate brings a 360-degree vision across infrastructure, cloud, and security, alongside strong communication skills to demystify technical concepts for business stakeholders. If you want your work to have a tangible impact within a renowned public/cultural institution while setting yourself up for future IT leadership, this is the opportunity for you.

Advantages
Competitive market salary range ($90,000 - $110,000 based on experience).

Balanced 35-hour work week with a hybrid model (3 days on-site in downtown Montreal).

4 weeks of starting paid vacation.

Excellent public sector benefits package (including a strong pension plan and comprehensive group insurance).

Responsibilities
Architecture & Strategy (30%): Design cloud and infrastructure architecture plans; perform proofs of concept; define IT standards and MS Entra ID governance; mentor team members.

Operations & Cloud Management (40%): Maintain performance and resilience of network/server infrastructure (Fortinet, Cisco); optimize Azure resource usage and cloud costs; serve as M365/Intune expert.

Cybersecurity & Governance (30%): Implement security tools (firewalls, IDS/IPS, IAM); manage vulnerability assessments; define incident response plans; supervise external managed security service providers (MSSP/SOC).

Qualifications
Bachelor’s degree in Computer Science or equivalent combination of education and experience.

Minimum of 8 years of experience in IT infrastructure, including at least 2 years dedicated to cybersecurity.

Hands-on experience administering Microsoft Azure environments and M365 suite / MS Entra ID.

Experience managing external vendor deliverables and infrastructure project execution.

Strong strategic mindset, problem-solving skills, and superior communication/stakeholder management abilities.

Summary
Are you a senior systems administrator ready to step up into a leadership role as the right hand to the IT Director? Our client is looking for a versatile professional blending hands-on technical expertise with strategic vision. In this role, you will bridge technical execution and IT strategy, overseeing cloud architecture, cybersecurity governance, and infrastructure evolution.

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to View email address on randstad.com to ensure their ability to fully participate in the interview process. show more