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Senior Core Network Engineer Jobs in Ontario (NOW HIRING)

... core infrastructure services. This role combines advanced operational ownership with active ... Solid networking knowledge, including DNS, DHCP, TCP/IP, routing concepts, firewalls, certificates ...

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L3 Network/ Linux Systems Engineer

Markham, ON ยท On-site

CA$90K - CA$105K/yr

L3 Network/ Linux Systems Engineer Responsibilities * Being escalation point for a variety of ... Configuration and administration of core routers, switches, firewalls and Linux servers

Position Summary This is a senior individual contributor role focused on supporting and evolving ... Strong understanding of network engineering concepts, including TCP/IP, DNS, routing, switching ...

Position Summary This is a senior individual contributor role focused on supporting and evolving ... Strong understanding of network engineering concepts, including TCP/IP, DNS, routing, switching ...

Ensures all network infrastructure engineering patterns are appropriately designed to meet our SLA ... core and customer infrastructure. * Overtime in the event of emergencies is required. What you ...

Network & Telecom Radio Engineer

Toronto, ON ยท On-site

CA$90K - CA$120K/yr

Could you be the full-time Network & Telecom Radio Engineer in Toronto, ON we're looking for? Your ... Progress towards senior engineering or leadership roles * Benefit from a fair and dynamic reward ...

Network & Telecom Radio Engineer

Toronto, ON ยท On-site

CA$90K - CA$120K/yr

Could you be the full-time Network & Telecom Radio Engineer in Toronto, ON we're looking for? Your ... Progress towards senior engineering or leadership roles * Benefit from a fair and dynamic reward ...

Showing results 41-60

Senior Core Network Engineer information

What is a senior core network engineer?

Senior Core Network Engineers are experienced professionals responsible for designing, implementing, managing, and optimizing the core components of an organization's network infrastructure. They focus on ensuring high availability, security, and performance of critical network systems such as routers, switches, and firewalls. These engineers often lead network projects, troubleshoot complex issues, and mentor junior staff. Their expertise is essential for maintaining seamless connectivity and supporting business operations.

What skills and qualifications are needed to be a senior core network engineer?

To thrive as a Senior Core Network Engineer, you need in-depth knowledge of network architecture, routing and switching protocols, and a degree in computer science or a related field, often with several years of relevant experience. Expertise in tools and systems such as Cisco IOS, Juniper JUNOS, MPLS, BGP, OSPF, and relevant certifications like CCNP or CCIE are typically required. Strong analytical thinking, problem-solving, and effective communication skills help you excel in troubleshooting and collaborating with cross-functional teams. These skills and qualifications are crucial for ensuring reliable, high-performance network operations and supporting complex organizational needs.

What are common challenges faced by senior core network engineers, and how can they be addressed?

Senior Core Network Engineers often encounter challenges such as managing complex network architectures, ensuring minimal downtime during upgrades, and addressing security vulnerabilities in real time. Staying current with rapidly evolving technologies and vendor solutions is crucial to maintaining network performance and security. To address these challenges, engineers typically collaborate closely with cross-functional teams, participate in ongoing training, and implement robust change management processes to ensure seamless network operations.

What is the difference between Senior Core Network Engineer vs Network Operations Center (NOC) Engineer?

AspectSenior Core Network EngineerNetwork Operations Center (NOC) Engineer
CertificationsCCNP, CCIE, Cisco certificationsCompTIA Network+, Cisco CCNA
Work EnvironmentDesign, implementation, and troubleshooting core network infrastructureMonitoring, incident response, and network maintenance
Employer & Industry UsageTelecom, large enterprises, ISPsService providers, enterprise networks, managed service providers

The Senior Core Network Engineer focuses on designing and maintaining core network infrastructure, requiring advanced certifications and technical expertise. In contrast, a NOC Engineer primarily monitors network performance, responds to incidents, and ensures network uptime. Both roles are vital in network operations but differ in scope and responsibilities.

What are the most commonly searched types of Core Network Engineer jobs in Ontario?

The most popular types of Core Network Engineer jobs in Ontario are:

What cities in Ontario are hiring for Senior Core Network Engineer jobs?

Cities in Ontario with the most Senior Core Network Engineer job openings:

Infographic showing various Senior Core Network Engineer job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 17% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution.

Senior Systems Engineer

Aviso Wealth

Toronto, ON โ€ข On-site

Full-time

Medical, Dental, Retirement, PTO

Posted 15 days ago


Job description

Aviso:

At Aviso, we are dedicated to improving the financial well-being of Canadians. As a leading wealth management organization, we are committed to leadership, innovation, partnership, responsibility, and community. Working with talented and energetic professionals who exemplify our values every day, you will quickly notice that our people and dynamic ‘oneaviso’ culture sets us apart. If you are looking for interesting and challenging work, at a company committed to its people, find out more about what Aviso has to offer at www.aviso.ca.

The Opportunity:

We’re looking to fill an opening for a Senior Systems Engineer to join our Technology Ops & Support Partners team.

Reporting to the Director, Technology Support Services, the Senior Systems Engineer is responsible for independently operating, engineering, and improving Aviso’s hybrid infrastructure platforms across Windows, Linux, VMware, Azure, backup/recovery, security, automation, and core infrastructure services. This role combines advanced operational ownership with active participation in infrastructure projects, technical design input, automation, incident leadership, and continuous improvement of platform reliability.

As oneaviso: 

  • We Care – You do the right thing for clients, partners and colleagues. You build trusted relationships, champion service excellence, and contribute to a culture where people feel valued and supported
  • We Dare –You challenge the status quo with bold ideas and fresh perspectives. You embrace change, seek opportunities to innovate and are comfortable exploring new ways of working
  • We Share – You collaborate openly and build meaningful relationships. You seek out diverse perspectives, share your knowledge and work together to help colleagues, clients and partners succeed
  • We Deliver – You take ownership of your work, honour your commitments and focus on delivering meaningful results. You hold yourself accountable and continuously look for ways to improve

What your day looks like:

  • Own complex incidents, problems, changes, and operational escalations across Windows, Active Directory, Linux, VMware, Azure, backup/recovery, monitoring, and related infrastructure services
  • Lead or actively contribute to infrastructure projects, including platform upgrades, migrations, patching programs, automation initiatives, Azure deployments, DR improvements, monitoring enhancements, and service transition into operations
  • Develop, maintain, and improve automation, scripts, configuration management, and operational tooling using PowerShell, Bash, Python, Ansible, SaltStack, Git, Azure DevOps, or similar tools
  • Provide technical design input and implementation support for resilient, secure, supportable infrastructure solutions across hybrid cloud and data centre environments
  • Strengthen operational controls for patching, vulnerability remediation, access management, backups, disaster recovery, monitoring, alerting, audit evidence, and configuration documentation
  • Perform advanced diagnostics across operating systems, identity, virtualization, storage, backup, network, firewall, DNS, certificates, TLS/SSL, HTTP/S, load balancing, and Layer 7 application connectivity
  • Coach less experienced team members through troubleshooting, runbook usage, change execution, documentation, and disciplined operational practices

Requirements

Your experience and skills:

  • 5+ years of proven experience operating and engineering mid-size (1000 assets) or larger production infrastructure environments across Windows Server, Active Directory, Linux, VMware, backup/recovery, monitoring, and hybrid cloud services
  • Demonstrated hands-on experience with Microsoft Azure production services, including virtual machines, storage, networking, identity integration, monitoring/log analytics, security controls, and operational troubleshooting
  • Demonstrated experience independently resolving complex infrastructure incidents, leading technical troubleshooting, implementing approved changes, and contributing to root cause analysis and problem management
  • Strong understanding of infrastructure security, vulnerability management, patching, access controls, backup and recovery, disaster recovery, monitoring, audit readiness, and operational risk reduction
  • Strong scripting and automation skills using PowerShell, Bash, Python, Ansible, SaltStack, Git, Azure DevOps, or similar tools; experience building repeatable operational automation is required
  • Solid networking knowledge, including DNS, DHCP, TCP/IP, routing concepts, firewalls, certificates, TLS/SSL, HTTP/S, load balancing, packet/log analysis, and Layer 7 diagnostics
  • Experience supporting or integrating containers, Oracle WebLogic, Apache/Tomcat, F5/load balancing, Oracle/Linux platforms, or middleware environments is an asset
  • Relevant Azure certification is required or expected within an agreed onboarding period; Azure Administrator Associate, Azure Network Engineer Associate, Azure Security Engineer Associate, or equivalent hands-on capability is preferred
  • VMware, Linux, Microsoft infrastructure, ITIL, security, or automation certifications are preferred
  • Fluent communication skills in English are required and bilingual skills in French are an asset

Benefits

Why Aviso?

At Aviso, you will find a dynamic and inclusive culture that rewards innovation and celebrates success.
Here are a few things that set us apart:

  • Competitive compensation package that rewards and recognizes individual contributions
  • Excellent health, dental and insurance benefits to meet the diverse needs of our employees
  • Generous vacation time, fitness benefit, parental leave top-up options
  • Matching contributions to our retirement program
  • Commitment to the continuous improvement of our staff through learning & development and an education assistance program
  • Regular social events to foster teamwork

Your Information

By submitting your application, you consent to the collection, use, and disclosure of your provided personal information for the purposes of assessing your qualifications and suitability for employment with Aviso. Your information will be handled in accordance with applicable Canadian privacy laws, including the Personal Information Protection and Electronic Documents Act (PIPEDA) and relevant provincial legislation. Your data may be shared with authorized personnel involved in the recruitment process and retained only as long as necessary to fulfill these purposes or as required by law.

Further information is available on the Privacy link on our Career Page – Privacy Policies

Equal Employment Opportunity

Aviso welcomes and encourages applications from all qualified individuals including persons with disabilities. If you require an accommodation, we will work with you to meet your needs in all stages of the hiring process.

We thank all applicants for their interest, however, only those selected for further consideration will be contacted.

No recruiters or agencies, please.

Company Overview:

Aviso is a leading wealth management and investment services provider for the Canadian financial industry, with approximately $145 billion in total assets under administration and management, and over 1,000 employees. We’re building a comprehensive, technology-enabled, client-centric wealth services ecosystem. Our clients include our partners, advisors, and investors. We’re a trusted partner for nearly all credit unions across Canada, in addition to a wide range of portfolio managers, investment dealers, insurance and trust companies, and introducing brokers. Our partners depend on Aviso for specific solutions that give them a competitive edge in a rapidly evolving, highly competitive industry. Our investment dealer and mutual fund dealer and our insurance services support thousands of investment advisors. Our asset manager, NEI Investments, specializes in investing responsibly. Our online brokerage, Qtrade Direct Investing®, empowers self-directed investors, and our fully automated investing service, Qtrade Guided Portfolios®, serves investors who prefer a hands-off approach. Aviso Correspondent Partners provides custodial and carrying broker services to a wide range of firms. We have offices in Toronto, Vancouver, and Montreal. Aviso is backed by the collective strength of our owners: the credit union Centrals, Co-operators/CUMIS, and Desjardins. We’re proud to power businesses that empower investors.

A career with Aviso means being part of a group of talented, energetic professionals who live their values every day, and belonging to an organization dedicated to your success and career development. If you’re looking for interesting and challenging work, at a company committed to its people, apply to join our team.

Salary

This position is posted with an expected salary range of $110,000 - $120,000 CAD annually. Individual compensation packages are based on various factors unique to each candidate and the requirements of the position.