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Added 9 mins ago
YU
Systems Administrator
Yorkville University
Toronto, ON
- Full-time
Reporting to the Director IT Security and Infrastructure we are hiring a Systems Administrator to join our IT team at Yorkville University. As our new Systems Administrator, you will be…
Added 23 mins ago
CO
Application & Integration Technical Analyst
City of Saint John
Saint John, NB
- Full-time
Under the direction of the designated IT Manager, the Application and Integration Technical Analyst is a technical lead responsible for system architecture, data strategy, and integration…
Added 23 mins ago
AS
IT Procurement Project Manager
Alquemy Search & Consulting
Calgary, AB
- Contract
Your core mission is to act as the primary technical translator and bridge between technology teams and procurement. You will collaborate directly with Enterprise Architects, Infrastructure…
Added 23 mins ago
C
Senior IT Infrastructure Engineer
Cytel
Canada
- Full-time
The Senior Azure Engineer will independently lead complex technical workstreams, make sound implementation decisions, troubleshoot difficult production issues, contribute to architecture…
Added 23 mins ago
T
3DEXPERIENCE DevOps Specialist
Techso
Montreal, QC
- Full-time
Experience in cloud security and Identity and Access Management (IAM);
Added 23 mins ago
LM
DIRECTOR OF INFORMATION TECHNOLOGY
Lacroix Médecine Privée
Quebec, QC
- Full-time
Ensure the performance, robustness, and high availability of the infrastructure and technology platforms essential to the network's medical and administrative activities, including ERP,…
Added 24 mins ago
KS
Data Engineer
Kumaran Systems
Toronto, ON
- Full-time
Lead and execute on-premises to Azure cloud migrations for data platforms, ETL workflows, and applications.
Added 24 mins ago
KS
Python Lead
Kumaran Systems
Toronto, ON
- Full-time
Deep understanding of sudo and /etc/sudoers - privilege delegation, NOPASSWD rules, security
Added 53 mins ago
E
Staff Product Manager, Professional Experience
ecobee
Toronto, ON
- Full-time
Our hive is looking for a Staff Product Manager to lead the professional experience, a dedicated focus for ecobee. Professionals strongly influence which controls are installed and…
Added 53 mins ago
Lead, Cyber Security
Westerkirk
Calgary, AB
The Cybersecurity Lead is responsible for shaping and advancing De Havilland's cybersecurity program across enterprise IT and operational technology environments. This role combines…
Added 53 mins ago
System Architect - Krembil Centre for Neuroinformatics
CAMH
Toronto, ON
Lead the design and evolution of the IYS platform's cloud and solution architecture on GCP, aligning it with research and program objectives and requirements for scalability, security, and…
Added 53 mins ago
JG
Gen AI Developer
J&M Group
Mississauga, ON
- Contract
Lead and enable development teams to effectively use GenAI tools and frameworks.
Added 53 mins ago
R
GitHub Enterprise & DevOps Administrator
Raise
Burnaby, BC
- Full-time
The GitHub Enterprise & DevOps Administrator to join the IT Infrastructure and DevOps Engineering team. In this role, you will collaborate closely with ’s Lead GitHub Administrator and the…
Added 53 mins ago
R
Senior DevSecOps and Application Security SME
Raise
Vancouver, BC
- Full-time
Application Onboarding & Supply Chain Security: Lead application security onboarding, software supply chain risk management, vulnerability management, and risk-based remediation workflows.
Added 1 hour ago
A
EDGE Google Inside Sales
Accenture
Toronto, ON
- Full-time
Your mission is to champion the client. You will dive deep to understand their unique challenges, goals, and aspirations. By forging strong relationships with key decision-makers, you will…
Added 1 hour ago
BI Architect
GFT Technologies SE
Toronto, ON
Lead the modernization of Guidewire operational reports from Actuate BIRT to the client's target analytics platform based on Microsoft Azure Databricks and Microsoft Fabric.
Added 1 hour ago
GP
Staff Product Manager, Professional Experience
Generac Power Systems
Toronto, ON · Canada - Toronto
- Full-time
Our hive is looking for a Staff Product Manager to lead the professional experience, a dedicated focus for ecobee. Professionals strongly influence which controls are installed and…
Added 1 hour ago
AC
Product Manager - SAP Release Manager
Air Canada
Toronto, ON
- Full-time
Air Canada seeks a highly motivated and experienced Product Manager (SAP Release Manager) to lead the end-to-end planning, governance, coordination, and execution of SAP releases. The role…
Added 1 hour ago
AI
Security Engineer
Apptoza Inc.
Calgary, AB
- Contract
✅ #MicrosoftDefenderForCloudApps #MDCA #MCAS #CloudAppSecurity – Hands-on administration, cloud application security, SaaS monitoring, policy management, and threat detection.
Added 1 hour ago
DH
Lead, Cyber Security
De Havilland Aircraft of Canada Limited
Calgary, AB
- Full-time
The Cybersecurity Lead is responsible for shaping and advancing De Havilland's cybersecurity program across enterprise IT and operational technology environments. This role combines…
Added 1 hour ago
D
Senior Data Scientist - Fraud Detection
DataVisor
Vancouver, BC
- $120,000 to $150,000 CAD / year
- Full-time
Our award-winning software platform is powered by a team of world-class experts in big data, machine learning, security, and scalable infrastructure. Our culture is open, positive,…
Added 1 hour ago
P+
Director of Engineering
Pivot + Edge
Ottawa, ON
- Full-time
You will lead and develop engineering managers and technical professionals, foster a high-performing and inclusive culture, and collaborate closely with Product Management, Project…
Added 1 hour ago
D
Senior Data Scientist - Fraud Detection
DataVisor
Calgary, AB
- $120,000 to $150,000 CAD / year
- Full-time
Our award-winning software platform is powered by a team of world-class experts in big data, machine learning, security, and scalable infrastructure. Our culture is open, positive,…
Added 1 hour ago
C
Lead Middleware Platform Engineer (contract)
Capgemini
Montreal, QC
- Contract
We are looking for a Lead Middleware Platform Engineer to lead the design, implementation, automation, and operationalization of a next-generation data and RDF platform for a global…
Added 1 hour ago
EC
Network Architect
Experis Canada
Toronto, ON
- $90 to $100 CAD / hour
- Contract
Lead architecture and roadmap development for two major initiatives: One Network modernization and provincial medical imaging cloud transformation.

Randstad Digital

Senior Network Security Engineer

Mississauga, ON, Canada

Contract

Apply About employer

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Experience: Experience: 8+ years of enterprise networking, firewall administration, and infrastructure delivery experience.
Posting language: English
Posted: Oct 27, 2026

Original job description

Senior Network Security Engineer, Network Data

Position Type: 6-Month Contract (Strong Renewal Potential)

Number of openings:1,

Location: Mississauga, ON (Hybrid: 2–3 days onsite per week

Must be eligible to work in Canada

Clearance: Must be eligible for Government of Canada Protected B clearance (requires living in Canada for approximately the last 5 years)

Roles and responsibilities

We are seeking a versatile Senior Network Security Engineer, Network Data to support critical enterprise infrastructure initiatives, centered on an active, large-scale data centre migration. In this role, you will play a hands-on technical lead role translating and migrating hundreds of firewall configurations from legacy platforms to next-generation appliances, while supporting core enterprise LAN/WAN operations.

The ideal engineer thrives across the entire network stack, is comfortable wearing multiple hats, and brings proven experience executing data center migrations with automation.

Key Responsibilities

Data Centre & Firewall Migration: Lead the translation, validation, and deployment of configurations migrating approximately 500 firewalls from Cisco to Fortinet.
Traffic Management & Security Implementation: Build, maintain, and optimize F5 BIG-IP traffic management solutions, including custom iRule programming.
Network Automation: Develop and execute Ansible playbooks and Python scripts to streamline configuration deployments, testing, and operational tasks.
Operations & Tier 2/3 Support: Provide senior-level escalation support for enterprise routing, switching, and firewall incidents; isolate complex Layer 1–7 issues.
Security & Change Execution: Implement approved security directives (firewall rules, IP/subnet filtering, VPN policies) and execute planned changes during scheduled maintenance windows.
Documentation & Standards: Maintain precise network topologies, operational runbooks, and migration mapping records.

Required Technical Competencies

Fortinet / FortiGate (Must-Have): Deep, hands-on engineering, configuration, policy mapping, and operational experience.
Cisco Firewalls & Enterprise Networking: Proven track record managing Cisco firewall appliances in a migration context, alongside solid routing and switching expertise (OSPF, BGP, LAN/WAN).
F5 BIG-IP: Strong, practical experience with Local Traffic Manager (LTM) and hands-on iRule development.
Automation & Scripting: Demonstrated proficiency writing and running Ansible playbooks; working ability to read and maintain Python scripts.
Data Centre Migration Track Record: Prior experience actively planning and executing data centre migrations in an enterprise environment.

Qualifications & Working Conditions

Experience: 8+ years of enterprise networking, firewall administration, and infrastructure delivery experience.
Versatility: Comfortable tackling issues across the full technology stack with minimal ramp-up time.
Availability: Open to occasional evening/weekend maintenance windows for project cutovers.
Certifications (Asset): CCNP, CCIE, NSE 4+, or F5-CTS.
Cloud Knowledge (Asset): Familiarity with hybrid connectivity involving Azure or AWS environments.

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More about this job

Responsibilities

Lead the migration of approximately 500 firewall configurations from Cisco to Fortinet, and build and optimize F5 BIG-IP traffic management solutions. Automate deployments and testing with Ansible and Python, provide senior escalation support for network incidents, implement approved security changes, and maintain network documentation.

Requirements

Requires 8+ years of enterprise networking, firewall administration, and infrastructure delivery experience, including hands-on Fortinet and Cisco firewall expertise, F5 BIG-IP LTM and iRule development, and data centre migration experience. Candidates should be proficient with Ansible, able to maintain Python scripts, have routing and switching knowledge, and be eligible to work in Canada and obtain Protected B clearance.

Skills

Fortinet FortiGate
Cisco Firewalls
Firewall Migration
F5 BIG-IP LTM
iRule Development
Ansible
Python
Network Automation
Data Centre Migration
Routing and Switching
OSPF
BGP
LAN/WAN
Network Security
Tier 2/3 Support
Azure and AWS Connectivity

Visa sponsorship

Not detected in the job text

Keywords

Fortinet
FortiGate
Cisco Firewalls
F5 BIG-IP
Local Traffic Manager
iRules
Ansible
Python
Data Centre Migration
Firewall Configuration
Firewall Policy Mapping
Network Automation
Enterprise Networking
Routing
Switching
OSPF
BGP
LAN/WAN
Layer 1–7 Troubleshooting
VPN Policies
IP/Subnet Filtering
Network Security
Configuration Deployment
Maintenance Windows
CCNP
CCIE
NSE 4+
F5-CTS
Azure
AWS

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