Senior Engineer, Network Security, Deloitte Global Technology

Deloitte’s Global Technology team is looking for a Senior Engineer to lead network security initiatives in a permanent role. The position is based in Toronto with a hybrid work model, and Deloitte notes additional available locations across Canada, including Calgary, Ottawa and Vancouver. The reference code for the posting is 135445. This is a chance to join a global professional services leader that backs its people with robust development opportunities and a culture built on flexibility and collaboration.

The role centers on designing, deploying, and managing security solutions for Deloitte’s critical infrastructure and data assets. It suits someone who enjoys working across IT, operations and compliance teams, and who wants to mentor newer engineers while shaping security architecture that aligns with industry standards and regulatory requirements.

What your days could look like

The core of the day is about crafting security architectures and concrete network security designs that fit complex enterprise environments. You’ll document security controls, diagram networks, and map out risk mitigation strategies so engineering and operations teams can deploy secure solutions with confidence. You’ll lead the field in applying advanced cyber defense measures, performing regular assessments, penetration tests, and vulnerability scans to keep threats at bay and maintain a strong security posture.

You’ll also own datacenter security, overseeing physical protections, network segmentation, and access controls, while implementing and managing tools like firewalls, IDS/IPS, and data encryption. Collaboration is a constant: you’ll partner with IT, operations, and compliance to embed security into every facet of the business, and you’ll guide junior security architects and engineers with clear, practical leadership. In addition, you’ll develop and maintain incident response plans, steer containment and recovery efforts during incidents, and conduct post-incident reviews to drive continual improvements. At the governance layer, you’ll help enforce security policies and audits under frameworks such as ISO 27001, NIST, and GDPR, and you’ll contribute to documentation and change-control processes in line with CTO standards.

Documentation and knowledge sharing come up frequently, from creating procedures and architectural documents to training new staff and reviewing material with CTO leadership and application teams. This is a role for someone who can translate complex security concepts into plain language for diverse audiences while maintaining rigorous technical standards.

The must-haves, and what would be nice to have

• A bachelor’s degree in computer science, information technology, or a related field is required, with a master's degree preferred
• At least three years of hands-on work in network security and engineering
• Extensive hands-on experience with security technologies such as firewalls, intrusion detection and prevention, VPNs, SIEM, and endpoint protection
• Proficiency with Palo Alto and Check Point firewall platforms
• A solid grasp of datacenter security principles, including physical security, network segmentation, and virtualization security
• Certifications like CISSP, CISM, CCIE Security or equivalent are highly desirable
• A proven track record designing and implementing intricate security solutions in large enterprise settings
• Strong problem-solving abilities and the capacity to think strategically, plus solid communication and collaboration skills
• Experience with cloud security is a plus

• A master’s degree or higher is a plus
• Additional relevant security certifications beyond those named are welcome
• Experience working with cloud platforms in a security capacity (beyond basic coverage) is favorable

Pay, benefits and practical details

The role carries a salary range of 69,000 to 114,000 CAD per year, with eligibility for a bonus program. Deloitte emphasizes its Total Rewards Package, which goes beyond base pay to support well-being and growth. In addition to normal vacation time, the program includes 4,000 CAD per year for mental health support benefits, a 1,300 CAD flexible benefit spending account, and firm-wide initiatives like Deloitte Days and Development and Innovation Days. The company also endorses flexible work arrangements and a hybrid work structure, reflecting its people-first approach. The primary location listed is Toronto, ON, with other available locations in the network including Toronto, Calgary, Ottawa and Vancouver.

Deloitte positions itself as the largest 100% Canadian-owned and operated professional services firm in the country, with a commitment to diversity, inclusion, and reconciliation. The firm provides pathways for development and leadership at every career stage and supports flexible options to help you contribute your best work.

Questions about accessibility and accommodations are welcome: Deloitte provides contact options for accommodation in recruitment at [email protected] and Indigenous-focused inquiries at [email protected]. Deloitte notes that applications are reviewed using Global Talent Standards, combining human screening with AI to identify the skills and qualities that matter, while protecting privacy.

Deloitte Canada maintains a network of offices across the country and acknowledges the traditional lands on which these offices stand, inviting applicants to consider the broader context of Indigenous lands and communities in Canada as part of their application process.

Advice for applicants

Lead your resume with the security work most relevant to this role, your three-plus years in network security and engineering, your hands-on use of Palo Alto and Check Point, and any large-scale enterprise projects where you designed or implemented complex security solutions.

Demonstrate how you prove you can deliver on the must-haves: share concrete examples of security architectures you created, the controls you implemented, and how you measured risk reduction in real terms. Include specifics about any datacenter security initiatives and the collaboration you had with IT, operations, or compliance teams.

Prepare for interviews by mapping your incident response experience to the role: explain how you built or led incident response plans, managed containment and recovery, and conducted root-cause analyses that fed back into policy updates and training.

Ask a precise question about how Deloitte integrates security with its datacenter operations and CTO Standards, and how cross-functional teams collaborate on security policy enforcement and audits. A good query could be about how they balance physical security, network segmentation, and virtualization security in evolving datacenter environments.