Sr. Network Engineer

Infillion; Toronto; On-site; CAD 130,000 - 175,000; Full time

Job summary

A digital media solutions company in Toronto is seeking a Sr. Network Engineer to design and maintain resilient network systems. This role focuses on automation and operational excellence across cloud and on-prem environments. Candidates should have a Bachelor's degree in Computer Science and strong experience in network automation and management. Competitive salary and perks offered, including unlimited paid time off.

Benefits

Base salary of $130,000 - $175,000 CAD

Supplemental medical benefits

Unlimited paid time off

Opportunities for profit sharing

Cell phone and WiFi reimbursements

Qualifications

• Proven background managing on-prem environments.
• Hands-on experience in production environments.
• Strong automation experience with Ansible, Puppet, and Python.

Responsibilities

• Design and automate scalable network infrastructure.
• Develop cost-efficient network automation solutions.
• Monitor and enhance cloud and data center network performance.

Skills

Network automation with Ansible

Configuration and management of firewalls

Understanding of BGP, OSPF, VPN, DNS, DHCP

AWS networking (VPC design, routing)

Experience with CI/CD pipelines

Education

Bachelor's Degree in Computer Science or Information Systems

Tools

Python

Puppet

OpenStack

Job description

Job Description

Job Description

About the Company

Infillion is built to solve the challenges of complexity, fragmentation, and opacity in the digital media ecosystem. With MediaMath at its core, Infillion's modular approach enables advertisers to seamlessly integrate or independently deploy key components—including ads and creative, audience targeting, identity and graphing, measurement and reporting, media supply, and campaign management. This flexibility allows brands, agencies, commerce enablers, retail media networks, and resellers to create tailored, high-performance solutions without the constraints of traditional, all-or-nothing legacy systems.

Headquartered in New York City, Infillion owns and operates industry-leading brands including TrueX, MediaMath, Gimbal location-based technology, InStadium, and Analytiks.ai. Recognized as one of the most awarded companies in media, marketing, and advertising, Infillion was named one of Fast Company's Most Innovative Companies of 2024.

About the Job

Infillion is seeking an experienced Sr. Network Engineer to join our DevOps Infrastructure team. You'll be responsible for designing, implementing, and maintaining resilient network systems across both cloud and on-premises environments, with a strong focus on automation, precision, and a strong commitment to operational excellence.

You'll help shape the evolution of Infillion's network stack by driving automation, improving visibility, and ensuring seamless connectivity across our AWS, GCP, and colocation data centers, along with internal and partner systems.

What you’ll be doing:

• Design and automate scalable network infrastructure using Infrastructure as Code (IaC) principles with Ansible, Puppet, OpenStack, and Python.
• Develop cost-efficient network automation solutions to eliminate manual tasks and improve operational efficiency.
• Architect and administer AWS VPC peering across multiple accounts, focusing on routing efficiency and high availability.
• Monitor, troubleshoot, and continuously enhance cloud and data center network performance.
• Collaborate closely with DevOps, Security, and Infrastructure teams to enforce reliability, observability, and compliance best practices.

What you have:

• Bachelor's Degree in Computer Science, Information Systems, or equivalent experience.
• Proven background managing on-prem environments; experience in high-growth SaaS, media, or technology organizations is a plus.
• Hands‑on experience configuring and managing firewalls, switches, and routers in production environments.
• Strong automation experience with Ansible, Puppet, and Python; experience with OpenStack is a plus.
• Solid understanding of core network protocols such as BGP, OSPF, VPN, DNS, and DHCP.
• Expertise in network design for availability, scalability, and observability.
• Experience integrating network automation with CI/CD pipelines is highly desirable.
• AWS networking experience (VPC design, peering, routing, and HA architectures) is a strong plus.

Who you are:

Thoughtful builder — you care about clean architecture and accurate network documentation.

Strong collaborator — comfortable partnering with Engineering, DevOps, and SecOps peers.

Bias for action — proactive, solutions‑driven, and comfortable in a fast‑moving environment.

Benefits & Perks

It's no secret that we work hard, but we also strive to create an office environment where the lines between work and play are blurred. This means we offer these great perks to help keep our team healthy, productive, and happy.

• Base salary of $130,000 - $175,000 CAD.
• Supplemental medical benefits.
• Unlimited paid time off – we trust your discretion.
• Opportunities for profit sharing, bonuses, and ownership.
• Cell phone and WiFi reimbursements.

We are committed to an inclusive and diverse work environment. Infillion is an equal opportunity employer. We do not discriminate based on race, color, ethnicity, ancestry, national origin, religion, sex, gender, gender identity, gender expression, sexual orientation, age, disability, veteran status, genetic information, marital status or any legally protected status.