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Added 4 mins ago
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Senior Full Stack Developer
Affinity
BC · British Columbia, Canada
- Contract
On behalf of our client, Affinity is seeking Senior Full Stack Developers.
Added 4 mins ago
MM
Senior Forward Deployed Engineer
Mitchell Martin Inc.
Mississauga, ON
- $73 to $78 CAD / hour
- Other
Senior Forward Deployed Engineer -Mississauga, ON Hybrid - Contract -$73.00-$78.00 per Hr
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GT
Senior Business Analyst
Global Technical Talent, an Inc. 5000 Company
Toronto, ON
- $70 to $72 CAD / hour
- Contract
Requirements and Analysis: Gather, analyze, and document business and functional requirements, create data mappings, interface specifications, and acceptance criteria. Author high-quality…
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Senior QA – Backend Automation & Data Testing
Acunor
ON · Ontario, Canada
- Contract
Job Title: Senior QA Engineer – Backend Automation & Data Testing
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Admission Assistant, Operations & Experience
Upper Canada College
Toronto, ON
- $46,352 to $60,837 CAD / year
- Full-time
Admission Systems Administration & Data Management
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Senior Strategic Account Manager
AT&T
Toronto, ON
- Full-time
We’re hiring for a Senior Strategic Account Manager who will drive revenue growth by developing and executing comprehensive account strategies, selling assigned products and services,…
Added 4 mins ago
EB
Senior Financial Analyst, Financial Data & Systems
EQ Bank
Toronto, ON
- Full-time
…of the fastest growing financial institutions in Canada. The Senior Financial Analyst will use his or her data analytics skill to maintain key financial databases and models to develop…
Added 4 mins ago
KG
Advisor, Contracts and Procurement
Kinross Gold Corporation
Red Lake, ON
- Full-time
Generate procurement reports and coordinate data tracking, document retention, and record management requirements.
Added 4 mins ago
SP
Senior Sales Director - Aerospace and Defence
Solace Power
Mount Pearl, NL
- Full-time
Solace Power Inc. is seeking to hire a Senior Sales Director - Aerospace and Defence.
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Schedule Manager
GagaMuller
Merritt, BC
- Full-time
Strong analytical capability with the ability to interpret complex programme data and communicate findings to senior stakeholders.
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GT
Coupa Administrator/Analyst
Global Technical Talent, an Inc. 5000 Company
Toronto, ON
- $50 to $60 CAD / hour
- Contract
Act as the senior escalation point for complex workflow, process, and system-related issues.
Added 4 mins ago
SE
Entry-level Environmental Scientist
SOLA Engineering
Vaughan, ON
- Full-time
The incumbent will work under the direction of the Environmental Project Manager and senior technical staff, with oversight by a Qualified Person where required. Assignments will support…
Added 4 mins ago
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Functional Analyst (EAM)
Affinity
Calgary, AB
- Contract
…continuous improvement. This is an ideal opportunity for a senior EAM professional with strong IBM Maximo expertise who understands both the operational realities of maintenance and asset…
Added 4 mins ago
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Data Analyst
Insight Global
Vancouver, BC
- $38 to $42 CAD / hour
- Contract
Insight Global is seeking a Senior Data Analyst to join the Digital Optimization Team at one of North America's leading athletic apparel retailers.
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Senior Consultant, ML/AI Engineer, Data & AI
Toast
Vancouver, BC
- $77,000 to $102,000 USD / year
- Full-time
…presence and thousands of professionals across the country, for a Senior Consultant, ML/AI Engineer to join its Data & AI practice in Vancouver. The firm helps some of Canada’s largest…
Added 4 mins ago
CM
Senior Advisor, Zero Emissions
Coast Mountain Bus Company
Vancouver, BC · Greater Vancouver, BC
- $91,840 to $137,760 CAD / year
- Full-time
The Senior Advisor, Zero Emissions is responsible for analyzing energy and other technology or operational attributes to support decision-making and business transformation to support the…
Added 4 mins ago
WC
Senior Manager, Program Management
Walmart Canada
Mississauga, ON
- Full-time
Position Summary...The Senior Manager, Program Management will lead the strategy, performance management, and continuous improvement of eCommerce customer experience, with a primary focus…
Added 4 mins ago
BR
Java Software Engineer
Benchmark Recruitment
Vancouver, BC · Greater Vancouver Metropolitan Area
- Contract
Job Title: Senior Java Backend Engineer – Cloud & Data
Added 4 mins ago
BR
DevOps Engineer
Benchmark Recruitment
Vancouver, BC · Greater Vancouver Metropolitan Area
- $113,900 to $147,400 CAD / year
- Full-time
Job Title: Senior DevOps Engineer – Site Reliability Engineering (SRE)
Added 4 mins ago
MM
Senior Forward Deployed Engineer
Mitchell Martin Inc.
Mississauga, ON
- $62 to $67 CAD / hour
- Other
Senior Forward Deployed Engineer - Mississauga,ON Hybrid - Contract - $62.00-$67.00 Per Hr
Added 4 mins ago
WO
Education Assistant, Mac - CARE Program
William Osler Health System
Brampton, ON
- Full-time
…training and promotional opportunities. Guided by our accomplished senior leadership team, together we are driving our vision of patient-inspired health care without…
Added 4 mins ago
WO
Education Assistant, Mac - CARE Program
William Osler Health System
Brampton, ON
- Full-time
…training and promotional opportunities. Guided by our accomplished senior leadership team, together we are driving our vision of patient-inspired health care without…
Added 4 mins ago
G
Schedule Manager
GagaMuller
Kamloops, BC
- Full-time
Strong analytical capability with the ability to interpret complex programme data and communicate findings to senior stakeholders.
Added 4 mins ago
T
Manager, Delivery Lead / Project Manager - Gen AI and Software Delivery
Toast
Montreal, QC
- $103,000 to $150,000 USD / year
- Full-time
Coach consultants and senior consultants on delivery discipline, stakeholder management and project management
Added 4 mins ago
AL
Customer Support Analyst - Bilingual (FRENCH)
AGDATA, LP
Cambridge, ON
- Full-time
We are the most trusted provider of data collection and management, marketing program management, and analytical solutions for our Crop and Animal Health industry clients. With data…

Randstad Digital

Senior Network Security Engineer

Mississauga, ON, Canada

Contract

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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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