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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 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

Benefits
Home office based with occasional travel to client sites. Flexible working hours to support a global team.

Compensation
Target base salary: $90,000–$100,000 (based on experience) plus variable commissions.

Equal Opportunity Employer
NTT DATA is a proud equal chance employer and welcomes applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.

NTT DATA is 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.

NTT DATA recruiters will never ask job seekers or candidates for payment or banking information during the recruitment process. All email communications from an NTT DATA recruiter will come from an @nttdata.com email address. If you suspect any fraudulent activity, contact us.

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📌 Senior Network Engineer (Ontario)
🏢 NTT DATA
📍 Ontario