Sr. Network Designer– our client requires a Senior Network Designer to provide architecture and design expertise to strengthen network services, support integration across on-premises and cloud environments, and align solutions with business and security requirements. The resource will support assigned projects and additional network and network security related initiatives identified during the engagement as part of the client's network and network security modernization initiatives.

Work is hybrid with 3 days onsite per week, subject to HM’s discretion. Meetings could be in GTHA-Hamilton, Markham, Toronto, ON client offices.

Mandatory Requirements Include:

- 10+ years designing and operating large-scale enterprise and provider WAN environments
- Proven experience with MPLS-based architectures, including traffic engineering and QoS
- Demonstrated experience leading MPLS-to-SD-WAN transformation initiatives
- Excellent Oral and written communication skills – present to stakeholders and technical teams
- WAN Architecture & Transformation: The candidate has End-to-End Architecture Delivery (Strategy → Migration)
- Cloud Connectivity (Hybrid/Multi-Cloud): The candidate has designed Direct Connect / ExpressRoute, Transit architectures, multi-cloud integration (AWS + Azure)
- Secure Architecture (SASE / Zero Trust): Demonstrated ability to apply standard security controls (firewalls, segmentation)
- Automation and AIOps: Led the implementation of Automation and AIOps solutions that delivered measurable operational efficiencies
- End-to-End Architecture Delivery (Strategy → Migration): Led full lifecycle:



current state → future state → migration → transition architecture
- Experience delivering measurable business outcomes through network automation and AI-driven operations, including the automation of provisioning, configuration management, compliance validation, incident response, and operational reporting.
- Experience designing greenfield WAN connectivity for cloud environments, with AWS (VPC, Transit Gateway, DirectConnect)

Desirable Requirements Include:

- Public Sector experience is nice to have.
- Telecom experience is an asset
- SASE / Zero Trust Architecture Expertise
- Ability to integrate WAN with up-to-date security controls
- Familiarity with monitoring/observability platforms for WAN performance
- Understanding the complexities and feature of ISE (Cisco Identity Services Engine)
- Understanding of NDR (Network Detection and Response)

Est. Start Date: Nov 30, 2026

Est. Duration: till Oct 5, 2027 + pos. extension

Location: Toronto, Ontario (Hybrid)

Posting#: 57115

Application question(s):

- What organization(s) have you led an MPLS-to-SD-WAN transformation initiative?
- What organization(s) have you done end-to-end architecture delivery (from strategy development through to migration)?

Experience:

- Design/operate large-scale enterprise WAN environments: 10 years (required)
- Leading MPLS-to-SD-WAN transformation initiatives: 1 year (required)
- MPLS-based architectures, including traffic engineering&QoS;: 3 years (required)
- End-to-End architecture Delivery (Strategy to Migration): 3 years (required)

Language:

- English (required)

Work Location: Hybrid remote in Toronto, ON (Toronto District)

📌 Sr. Network Designer #57115 (Toronto)
🏢 Intellex Systems
📍 Toronto