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Added 14 mins ago
Bilingual Specialist, Software Engineering (D365 ERP)
CMHC - SCHL
Ottawa, ON · Toronto, ON · Montreal, QC
…Operations) practices where the next generation of software applications are being developed that will enable CMHC to achieve its mission. As an ERP Developer, you will be responsible for…
Added 14 mins ago
Senior Specialist, Software Engineering (Middleware-AZURE)
CMHC - SCHL
Ottawa, ON · Toronto, ON · Montreal, QC
We are looking for an experienced Azure Developer to design, build, and support cloud native integrations and applications that power our enterprise platforms. The ideal candidate has…
Added 14 mins ago
RB
Manager, Enterprise Hedge Accounting, NIH
Royal Bank of Canada
Toronto, ON
- Full-time
The Manager, Enterprise Hedge Accounting will manage the financial control responsibilities in the Enterprise Hedge Accounting with the objective of delivering timely, accurate and reliable…
Added 14 mins ago
A
IT Specialist (3-Month Contract)
ALS
North Vancouver, BC · CAN - BC - North Vancouver
- Full-time
Troubleshooting of hardware, software and connectivity issues in an Enterprise environment
Added 14 mins ago
SS
Application Support Engineer – SWIFT & Mainframe, Assistant Vice President
State Street
Toronto, ON
- Full-time
…ecosystems to support and modernize mission-critical financial applications. The team supports high-volume, highly secure financial systems operating across SWIFT secure zones, cloud-native…
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Application Support Engineer – SWIFT & Mainframe, Assistant Vice President
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Toronto, ON
- Full-time
…ecosystems to support and modernize mission-critical financial applications. The team supports high-volume, highly secure financial systems operating across SWIFT secure zones, cloud-native…
Added 28 mins ago
TI
Manager, Enterprise Risk Management
Teranet Inc.
Toronto, ON
- $140,400 to $152,100 CAD / year
- Full-time
The Manager, Enterprise Risk Management (ERM) is primarily responsible for leading the development, implementation, and continuous improvement of Teranet's Business Continuity Management…
Added 28 mins ago
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Financial Services Assistant-EN
Canadian Forces Morale and Welfare Services
Saint-Jean-sur-Richelieu, QC · St-Jean-Sur-Richelieu, QC
- $19.85 to $23.41 CAD / hour
- Full-time
…our commission-free environment reinforces this. As a social enterprise, the profits we make help fund programs within the Canadian Armed Forces (CAF) community to benefit members and their…
Added 28 mins ago
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Senior Implementation Consultant
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- Full-time
Nakisa is a global leader in AI-powered enterprise software for Human Resources, Financial Management, and Commercial Real Estate (CRE). Our cloud platform powers mission-critical…
Added 29 mins ago
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Principal Enterprise Architect
RBC
Toronto, ON
- Full-time
Applications Architecture, Architectural Modeling, Critical Thinking, Enterprise IT Architecture, Information Technology Consulting, Multi-Level Communication, Platform Architecture,…
Added 29 mins ago
Member IT Services - Senior IT Business Systems Analyst
Mohawk Medbuy Corporation (MMC)
Burlington, ON · Oakville, ON · Toronto, ON
7+ years of related business systems analyst experience within an enterprise business application environment.
Added 29 mins ago
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Manager, Financial & Subsidiary Reporting
Ontario Teachers' Pension Plan
Toronto, ON
- Full-time

Pay-for-performance with base salary and annual incentive based on individual and enterprise performance.

The Base Salary range for this level is as follows:
$105,000 -…
Added 29 mins ago
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Project Manager, Enterprise Project Management Office
Ontario Health
Toronto, ON
- Full-time
Join Ontario Health’s Enterprise Project Management Office (EPMO) and help turn strategic priorities into measurable results. Reporting to the Manager, EPMO, you will lead one or more…
Added 29 mins ago
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TD
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- Full-time
The FCRM Testing Analyst executes independent testing of FCRM controls for assigned technologies (Applications/tools, etc.) across the Enterprise which entails FCRM risks.
Added 44 mins ago
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Moneris is seeking a highly skilled Network Engineer to design, implement, automate, and support the enterprise network infrastructure that powers our business and payment processing…
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Forward Deployed Engineer - Full Stack AI Solutions
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- Full-time
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Added 57 mins ago
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Added 57 mins ago
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Added 57 mins ago
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Forward Deployed Engineer - Full Stack AI Solutions
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Added 59 mins ago
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Added 59 mins ago
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- $120,000 to $135,000 CAD / year
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Added 59 mins ago
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Added 1 hour ago
Senior Specialist, Software Engineering (D365 ERP)
CMHC - SCHL
Ottawa, ON · Toronto, ON · Montreal, QC
…Operations) practices where the next generation of software applications are being developed that will enable CMHC to achieve its mission. As an ERP Developer, you will be responsible for…
Added 1 hour ago
V
GTM Growth Lead
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- Full-time
Validere is the enterprise intelligence platform for the energy industry. Our all-in-one platform empowers energy companies to make smarter decisions by streamlining operations with…

Celestica International LP

Lead Network & Security Architect 1

Toronto, ON, Canada

Salary + Short Term Incentive = 125,000 - 199,000 CAD

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Job details

Pay: Salary + Short Term Incentive = 125,000 - 199,000 CAD
Experience: Minimum of 8+ years of experience in network architecture, with a heavy emphasis on securing air-gapped or highly isolated enterprise environments.
Posting language: English
Posted: Oct 6, 2026

Original job description

Req ID: 141212 Region: Americas Country: Canada State/Province: Ontario City: Toronto

Summary

We are seeking a highly experienced and meticulous Lead Network & Security Architect to join the IT Support team for the Hardware Platform Solutions (HPS) group. In this role, you will take ownership of our global Research and Development Lab (RDL) reference architecture and drive its deployment, management, and scaling across all current and future HPS Design Centers (including Silicon Valley, Richardson, Thailand, and other global hubs).

The successful candidate will be responsible for implementing and maintaining a completely isolated, air-gapped network environment that operates independently of standard corporate IT networks. You will manage complex secure access paths, isolated VLAN provisioning, private full-mesh SD-WAN overlays, and a multi-tiered global data package replication and distribution system. You will also serve as the key enablement architect, helping project teams quickly spin up new project-specific instantiations of the RDL network model while adhering to strict security constraints.

Core Responsibilities

Architectural Implementation & Governance

Deploy Reference Architecture: Standardize and implement the RDL reference design across all global HPS design locations (San Jose, Richardson, Thailand, Shanghai, SongShan Lake, Penang, Chennai and future locations).
Support New Instantiations: Act as the primary technical design authority to spin up new RDL network instances (allocating subnets, configuring dedicated VLANs, establishing local jump hosts, and defining user authentication parameters) for upcoming HPS design projects.
Strict Constraint Enforcement: Maintain absolute isolation of the RDL environments. Ensure zero direct or indirect public internet connectivity and guarantee that out-of-scope systems or agents (e.g., CrowdStrike, Threat Locker, Big Fix, ServiceNow Agents, ClearPass NAC, and Windows Domain joins) are strictly excluded from the lab network.

Network Infrastructure & Security

SD-WAN & Routing: Design, configure, and maintain the private, full-mesh SD-WAN overlay connecting global RDL sites.
Secure Firewalling: Configure and administer enterprise-grade firewalls (Checkpoint 3980) protecting the perimeter of each localized lab, defining strict ingress/egress filtering rules.
Switching & Segmentation: Manage core and access layer switches (Cisco Catalyst 9400/9200 series, Celestica DS2000, ES1500 switches) to segment the RDL into logical, multi-tenant VLAN environments - specifically separating Export Controlled and Non-Export Controlled network zones.

Identity and Remote Access Management

Remote Customer Access: Oversee the implementation and administration of CyberArk vPAM (Virtual Privileged Access Management) for remote customer connections.
Corporate Remote Access: Configure and maintain Zscaler ZTNA (Zero Trust Network Access) and App Connectors to terminate connections securely on Linux-based local jump hosts.
Decentralized Authentication: Design and maintain a secure user management protocol on jump hosts and local RDL nodes. As the RDL operates without Windows Active Directory, you will define standard operating procedures for the manual/programmatic creation of local system accounts and localized role-based access control (RBAC).

Secure Data Package Management & DevOps Repo Architecture

Repository Architecture: Maintain the multi-tier secure data distribution system:
- IT Repository Server: Internet-facing ingestion nodes (running on Hyper-V/Dell PowerEdge) to securely pull packages, drivers, and applications.
- Global Repository Server: The middle-layer relay that acts as a secure, scanned transit point between the corporate IT network and the isolated RDL network.
- RDL Local Repository Server: Localized instances inside the labs that pull from the Global Repo and host files locally over HTTP/HTTPS at /var/www/html/repo/.
Workflow Automation: Ensure seamless, secure, programmatically validated transfer of "transfer bundles" containing operating system packages (Rocky, Ubuntu, CentOS, etc.) across the air gap.
Security Scans & Compliance: Coordinate with corporate IT and security teams to execute periodic vulnerability scanning and patching of repository servers, ensuring all packages undergo integrity checks before reaching the inner RDL networks.

Knowledge/Skills/Competencies

Required Technical Skills

Hardware & OS Competencies: Hands-on experience with Checkpoint Firewalls (Checkpoint 3980 preferred), Cisco Catalyst 9400/9200 switches, and SilverPeak SD-WAN solutions.
Security & Identity Tools: Expert-level understanding of CyberArk (PVWM/vPAM) and Zscaler ZTNA/Zscaler App Connectors.
Virtualization & Systems: Solid administration experience in VMware vSphere Enterprise and/or Microsoft Hyper-V running on bare-metal systems (e.g., Dell PowerEdge R670).
Linux Administration: Strong proficiency with Linux environments (Rocky Linux, Ubuntu, CentOS) for jump host configuration and secure HTTP/HTTPS local web repository servers (Nginx/Apache).
Network Segmentation & Protocols: Expert in VLAN tagging, inter-VLAN routing, subnetting, IP address management (IPAM), and secure file transfer protocols.
Automated Data Pipelines: Familiarity with script-based file synchronization and automated extraction/integrity validation mechanisms (e.g., hashing, checksums) for software deployment across isolated boundaries.

Strongly Preferred Certifications

Checkpoint Certified Security Expert (CCSE) or Master (CCSM)
Cisco Certified Network Professional (CCNP) - Enterprise or Security
CyberArk Certified Defender or Sentry
Certified Information Systems Security Professional (CISSP)

Soft Skills & Working Style

Detailed Documentation: Proven track record of generating flawless High-Level Designs (HLD) and Low-Level Designs (LLD), block diagrams, and standard operating procedures (SOPs).
Strategic Problem Solver: Comfortable working around strict operational boundaries where typical modern agents and automated tools are banned for security compliance.
Cross-functional Partner: Ability to collaborate closely with HPS Design Engineers, Project Managers, Corporate IT Security, and external Customers.
Financial Stewardship: Ability to work closely with procurement to specify, justify, and size bill of materials (BOM) for both upgrading existing sites and provisioning new infrastructure.

Physical Demands

Duties of this position are performed in a normal office environment.
Duties may require extended periods of sitting and sustained visual concentration on a computer monitor or on numbers and other detailed data. Repetitive manual movements (e.g., data entry, using a computer mouse, using a calculator, etc.) are frequently required.

Salary

The stated range includes Base Salary and target Short-Term Incentive (STI) compensation only. A comprehensive benefits package is offered in addition to this range.

The range described in this posting is an estimate by the Company, and may change based on several factors, including but not limited to a change in the duties covered by the job posting, or the credentials, experience or geographic jurisdiction of the successful candidate.

Salary + Short Term Incentive = 125,000 - 199,000 CAD

Typical Education and Experience

Bachelor’s degree in Network Engineering, Computer Science, Cybersecurity, or a related technical field.
Minimum of 8+ years of experience in network architecture, with a heavy emphasis on securing air-gapped or highly isolated enterprise environments.

Notes

This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.

Celestica is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws. This policy applies to hiring, promotion, discharge, pay, fringe benefits, job training, classification, referral and other aspects of employment and also states that retaliation against a person who files a charge of discrimination, participates in a discrimination proceeding, or otherwise opposes an unlawful employment practice will not be tolerated. All information will be kept confidential according to EEO guidelines. Celestica is an E-Verify employer.

COMPANY OVERVIEW:

Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high-growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.

Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):

ATS: This segment serves customers in complex, regulated and high-reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.

CCS: This segment focuses on high-performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI-driven growth.

Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast-changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.

Celestica would like to thank all applicants, however, only qualified applicants will be contacted. Celestica does not accept unsolicited resumes from recruitment agencies or fee based recruitment services.

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More about this job

Responsibilities

The Lead Network & Security Architect will design, deploy, and manage isolated, air-gapped network environments across global design centers. This role involves implementing secure access paths, SD-WAN overlays, and multi-tiered data replication systems while enforcing strict security constraints.

Requirements

Candidates must have at least 8 years of experience in network architecture with a focus on securing isolated environments. A bachelor's degree in a technical field is required, along with expertise in firewalls, switching, identity management, and Linux administration.

Skills

Network Architecture
Security Architecture
Checkpoint Firewalls
Cisco Catalyst Switches
SD-WAN
CyberArk
Zscaler ZTNA
Linux Administration
VMware vSphere
Microsoft Hyper-V
VLAN Tagging
IPAM
Network Segmentation
Data Pipeline Automation
Technical Documentation
Project Management

Visa sponsorship

Not detected in the job text

Keywords

Network Architecture
Security Architecture
Air-gapped Networks
SD-WAN
Checkpoint 3980
Cisco Catalyst
CyberArk
Zscaler ZTNA
VMware vSphere
Hyper-V
Linux
Rocky Linux
Ubuntu
CentOS
VLAN
IPAM
Nginx
Apache
DevOps
CCSE
CCSM
CCNP
CISSP
High-Level Design
Low-Level Design
Data Center Infrastructure
Hardware Platform Solutions
Network Security
Identity Management
Automation

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