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Senior Network Engineer Jobs in Whitby, ON (NOW HIRING)

NTT Ltd.

Senior Network Engineer

Toronto, ON · Hybrid

Senior Network Engineer responsibilities include managing and optimizing in-house and cloud-based networks, developing and implementing network security protocols, and troubleshooting network issues.

Scotiabank

Senior Network Engineer

Toronto, ON

Reporting to a Senior Manager, Global Network Engineering - Design, as a Senior Network Engineer you will play a critical part in helping the team support the various technologies within our Global ...

Definity Financial

Senior Network Engineer

Toronto, ON · Hybrid

CA$69K - CA$119K/yr

The Opportunity We are seeking a highly experienced Senior Network Engineer to design, implement, operate, and support a complex enterprise network environment. This role requires deep expertise in ...

COMPUTACENTER PLC

Senior Network Engineer

Markham, ON · On-site

CA$100K - CA$120K/yr

About the role The Senior Network Engineer provides onsite technical support, maintenance, and management of complex solutions that span across multiple enterprise technical streams. This role has a ...

Tenstorrent

Sr. Network Engineer

Toronto, ON · Hybrid

CA$100K - CA$500K/yr

As our AI infrastructure continues to scale, we're looking for a Network Engineer to help design, deploy, and operate the networking backbone powering Tenstorrent's global AI compute infrastructure.

Alstom

Network Engineer

Toronto, ON

CA$90K - CA$115K/yr

Could you be the full-time Network Engineer in Toronto, ON, we're looking for? Your future role ... Experience with network security, policies, and routing protocols (e.g., IP or SR MPLS) * Hands-on ...

Alstom

Network Engineer

Toronto, ON · On-site

CA$90K - CA$115K/yr

Could you be the full-time Network Engineer in Toronto, ON, we're looking for? Your future role ... Experience with network security, policies, and routing protocols (e.g., IP or SR MPLS) * Hands-on ...

FNZ

Network Engineer

Toronto, ON · Hybrid

We are looking for an experienced Network Engineer, to have have an excellent command of network design principles and a demonstrated ability to architect scalable, secure, and resilient network ...

Long View Systems

Senior Network Consultant

Toronto, ON

CA$80K - CA$105K/yr

We are looking for an energetic and client-orientated Senior Network Consultant for our Toronto branch. You will be a member of our Professional Services Consulting team and work on multiple projects ...

Long View Systems

Senior Network Consultant

Toronto, ON

CA$80K - CA$105K/yr

We are looking for an energetic and client-orientated Senior Network Consultant for our Integrated Global Services branch to be based out of our Calgary, Edmonton, Toronto or Vancouver branch. You ...

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Senior Network Engineer information

What is a senior network engineer?

Senior Network Engineers are experienced IT professionals responsible for designing, implementing, and managing complex computer networks within organizations. They oversee network infrastructure, troubleshoot issues, ensure network security, and optimize performance. Typically, they lead network projects, mentor junior staff, and collaborate with other IT teams to support business operations. Their expertise covers a range of technologies, including routers, switches, firewalls, and cloud networking.

What are some common challenges faced by senior network engineers when managing large-scale network infrastructures?

Senior Network Engineers often encounter challenges such as integrating new technologies into legacy systems, ensuring network security across a growing number of devices, and maintaining high availability while performing upgrades or troubleshooting. Balancing the demands of multiple stakeholders—like IT, security, and business units—can also be complex. Staying updated with evolving protocols and proactively identifying potential performance bottlenecks are crucial parts of effectively managing large-scale environments.

What does a senior network engineer do?

A senior network engineer builds and maintains data communication networks for a company or organization. As a senior network engineer, you have several years of industry experience and lead a team of junior network engineers and network administrators to ensure both the local area network (LAN) and wide area network (WAN) are functioning properly. Your job duties include installing software and hardware, creating a layout plan for cables, and troubleshooting and solving problems that arise with the networks for which you are responsible.

What is the difference between Senior Network Engineer vs Network Administrator?

AspectSenior Network EngineerNetwork Administrator
CertificationsCCNP, CCIE, Cisco certificationsCCNA, CompTIA Network+
Work EnvironmentDesign, implement, and troubleshoot complex networksMaintain and support existing network infrastructure
ResponsibilitiesNetwork architecture, advanced troubleshooting, project leadershipNetwork setup, monitoring, routine maintenance

While both roles involve network management, a Senior Network Engineer focuses on designing and implementing complex network solutions, often leading projects. In contrast, a Network Administrator primarily maintains and supports existing networks, ensuring smooth daily operations.

What are the key skills and qualifications needed to thrive as a senior network engineer, and why are they important?

To excel as a Senior Network Engineer, you need a deep understanding of network architecture, protocols, security, and typically a bachelor's degree in computer science or a related field. Expertise in configuring and troubleshooting routers, switches, firewalls, and experience with tools like Cisco IOS, Juniper, or cloud networking platforms, along with certifications such as CCNP or CCIE, are highly valued. Strong problem-solving abilities, communication skills, and leadership are crucial for designing solutions and collaborating with IT teams. These competencies ensure reliable, secure, and scalable network infrastructures that support critical business operations.
More about Senior Network Engineer jobs
What are the most commonly searched types of Network Engineer jobs in Whitby, ON? The most popular types of Network Engineer jobs in Whitby, ON are:
What cities near Whitby, ON are hiring for Senior Network Engineer jobs? Cities near Whitby, ON with the most Senior Network Engineer job openings:
Senior Network Engineer jobs near you
Infographic showing various Senior Network Engineer job openings in Whitby, ON as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 11% Part Time, and 8% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Senior Network Engineer

NTT Ltd.

Toronto, ON • Hybrid

Full-time

Re-posted 9 days ago

Job description

Make an impact with NTT DATA
Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion - it's a place where you can grow, belong and thrive.

Position Overview:

We are seeking an experienced and talented Senior Network Engineer to join our team.

Senior Network Engineer responsibilities include managing and optimizing in-house and cloud-based networks, developing and implementing network security protocols, and troubleshooting network issues. You have extensive experience managing a hybrid network (Azure preferred) that is highly available and fault tolerant. Experience with and an expert understanding of firewalls is a must.

The primary goal of the Senior Network Engineer is to ensure the smooth operation of the network infrastructure to provide maximum performance and availability for the system users. This position is expected to be the subject matter expert and "go to" individual on the team to troubleshoot complex problems nobody else can solve.

Our ideal candidate is cool under pressure, an expert problem solver, highly motivated, a team player but also able to work independently, and is someone that is constantly looking for ways to make improvements and isn't afraid to bring those suggestions forward.

Responsibilities:
  • Design and deploy functional networks (LAN, WAN, WLAN)
  • Configure and install various network devices and services (e.g., routers, switches, firewalls, load balancer, VPN, QoS)
  • Perform network maintenance and system upgrades including service packs, patches, hot fixes, and security configurations
  • Perform cost estimation and identify mechanisms for cost control and containment
  • Monitor performance and ensure system availability and reliability
  • Monitor system resource utilization, trending and capacity planning
  • Work within established configuration and change management policies to ensure awareness, approval and success of changes made to the network infrastructure
  • Select and implement security tools, policies, and procedures in conjunction with the company's security team
  • Liaise with vendors and other IT personnel for problem resolutions
  • Ensure security and compliance with policies and procedures
  • Provide technical support and troubleshooting to resolve network related issues
  • Stay updated with the latest trends in networking
  • Document and maintain network environment configurations and diagrams
  • Provide assistance and mentoring to other IT team members
Qualifications:

Must Have

  • 10+ years of experience as a Network Engineer
  • 5+ years of experience in a senior role
  • Deep understanding of network protocols (e.g., IPSEC, HSRP, BGP, OSPF, 802.11, QoS)
  • Solid understanding of the OSI or TCP/IP model
  • Hands-on experience with monitoring, network diagnostics and network analytics tools
  • Advanced troubleshooting skills
  • Experience with both on-premises and cloud (Azure preferred) networks
  • Experience deploying, managing, and troubleshooting firewalls
  • Experience deploying, managing, and troubleshooting VPN IPSEC tunnels
  • Professional certifications in networking
  • Effective communication skills (written and verbal)

Would be a Plus

  • Experience deploying, managing, and troubleshooting an IPS/IDS
  • Experience with Fortinet network devices and firewalls
  • Experience designing and managing networks to optimize VoIP traffic
  • Experience with F5 BigIP devices
  • Bachelor's degree in Computer Science, Engineering, or a relevant field

This is a home office-based position, with some travel for company/salesmeetings as well as to client sites. Flexibility to work outside of standard 9am-6pm local time zone hours may be required at times to support this global team.

Target Base Salary: $90,000K-$100,000K (based on experience) plus variable commissions.

NTT Business Process Outsourcing is an equal opportunity employer and welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.

Workplace type:

About NTT DATA
NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D.

Equal Opportunity Employer
NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us. Apply today.

Third parties fraudulently posing as NTT DATA recruiters

NTT DATA recruiters will never ask job seekers or candidates for payment or banking information during the recruitment process, for any reason. Please remain vigilant of third parties who may attempt to impersonate NTT DATA recruiters-whether in writing or by phone-in order to deceptively obtain personal data or money from you. All email communications from an NTT DATA recruiter will come from an @nttdata.com email address. If you suspect any fraudulent activity, please contact us.

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