Who we need We are hiring a Senior Systems Engineer to join our Infrastructure & Operations team. This is a senior, hands‑on infrastructure role focused on Linux systems, virtualization, physical and co‑location infrastructure, Kubernetes, storage, automation, and complex production troubleshooting. The successful candidate will act as a senior technical escalation point for systems and infrastructure issues and will work closely with DevOps, Network, DBA, Security, and application teams to deliver reliable, secure, scalable infrastructure in support of illumin's global operations.

The ideal candidate has deep expertise in core systems and infrastructure engineering, broad knowledge across adjacent technology domains, and the ability to trace problems across operating systems, compute, storage, networking, virtualization, and container platforms. The role requires strong ownership, sound operational judgment, and a focus on automation and continuous improvement.

This is a full-time, hybrid position, working in our Toronto office three days per week.

You must be able to travel internationally (US & Europe) without restrictions.

Systems Administration & Infrastructure Engineering

Serve as a senior technical escalation point for Linux systems and infrastructure issues, with strong working knowledge of Windows Server environments.

Manage, maintain, and optimize VMware vSphere/ESXi environments and other virtualization platforms, including compute, networking, storage, host lifecycle, and vCenter integration.

Operate and support on-premise, co‑location, and hybrid infrastructure across multiple sites and regions.

Perform capacity planning, lifecycle management, performance analysis, and reliability improvements across infrastructure platforms.

Support Kubernetes node lifecycle, container runtimes, networking, DNS, certificates, persistent storage, observability, and cluster reliability.

Partner with DevOps and application teams to improve platform reliability, deployment practices, and operational standards.

Networking & Cross‑Platform Troubleshooting

Apply strong enterprise networking fundamentals, including TCP/IP, routing, DNS, DHCP, VLANs, load balancing, and BGP, to troubleshoot infrastructure and application connectivity issues.

Work collaboratively with the Network Engineering team on Cisco, Juniper, load balancers, routing, and datacenter connectivity; direct ownership of all network platforms is not required.

Diagnose complex production issues that span systems, network, storage, virtualization, and application layers using packet captures, logs, metrics, and system‑level tooling.

Automation, DevOps & Observability

Develop and maintain infrastructure automation using Python, Ansible, Bash, APIs, and related tooling; Go experience is an asset.





Automate repetitive infrastructure operations, configuration changes, validation, and systems integrations across large‑scale environments.

Apply DevOps practices to configuration management, CI/CD workflows, infrastructure delivery, and operational automation.

Improve monitoring, logging, alerting, capacity management, and observability across infrastructure platforms using tools such as Prometheus, Grafana, Netdata, ELK, or equivalent.

Storage & Data Platform Infrastructure

Support enterprise and distributed storage technologies, including local storage, SAN/NAS, object storage, and Kubernetes persistent storage.

Troubleshoot storage performance, availability, disk, filesystem, and capacity issues across physical, virtual, and containerized environments.

Support infrastructure underlying MySQL and other stateful platforms, including compute, storage, networking, high availability, and performance troubleshooting, in collaboration with the DBA team.

Produce clear technical documentation, runbooks, standards, and operational procedures.

Mentor junior engineers and share technical knowledge across teams.

Collaborate closely with DevOps, Network, DBA, Security, and application teams to deliver infrastructure that meets technical and business requirements.

You will bring these required qualifications:

Experience : 8-10+ years in systems engineering, infrastructure engineering, systems administration, or a closely related role, with substantial experience supporting production environments.

ITIL Foundations ( v3 or v4) in IT Service Management

Technical Expertise

Deep hands‑on Linux systems administration and troubleshooting experience, with solid working knowledge of Windows Server.

Strong understanding of enterprise networking concepts, including TCP/IP, routing, DNS, DHCP, VLANs , load balancing, and general BGP concepts.

Robust automation skills using Python, Ansible, Bash, APIs , or comparable tooling.

Experience supporting on‑premise and co‑location infrastructure , including enterprise server hardware and remote management technologies.

Experience with storage technologies and troubleshooting across physical, virtual, and containerized environments.

Working knowledge of MySQL architecture, replication/high availability concepts, backup considerations, and common operational troubleshooting.





Strong understanding of DevOps practices, configuration management, monitoring, and automation for complex systems .

Your application is even stronger if you have some of these preferred qualifications:

Experience with Cisco, Juniper, A10, HAProxy , or similar networking and load‑balancing platforms.

Experience with Prometheus, Grafana, Netdata, ELK , or comparable monitoring and observability platforms.

Experience with Go or other software‑development languages used for infrastructure tooling.

Experience with ServiceNow or a comparable ITSM platform.

Exposure to GPU, AI/ML , or high‑performance compute infrastructure is an asset where relevant to future platform requirements.

The salary range for this role is $100,000–$150,000 plus bonus.

We value open conversations about compensation and are happy to discuss our approach at any stage of the hiring process.

At illumin, we are transforming the advertising landscape. It empowers marketers to connect with their audiences in powerful ways through real‑time data and easy‑to‑use visual tools. By seamlessly combining media planning and buying in an intuitive interface, marketers can take complete control of their campaigns, meeting customers wherever they are in the buying journey and maximizing the impact of their ad spend through personalized insights for smarter decision‑making.

By harnessing the power of data, advancing our AI capabilities, and deeply investing in our people, we are preparing for a future that will redefine what’s possible in journey advertising.

Joining us now is a chance to be part of our transformation.

We are undergoing a transformative shift. Whether accessing new technology, restructuring workflows, or expanding your team, you will have full support if you can make the business case.

To support a healthy work‑life balance, we offer a flexible work environment, a meal credit for your in‑office days, and a free massage with an RMT in‑house every eight weeks. That is in addition to our comprehensive benefits, which include life, AD&D;, long‑term disability insurance, and coverage for prescriptions, dental, vision, mental health, and professional health services. You will also have access to a workplace advisor, the Vitality Wellness app, and a $300 annual healthcare spending account.

illumin is firmly committed to diversity within its community and welcomes applications from racialized persons/persons of colour, Indigenous People of North America and the world, persons with disabilities, 2SLGBTQIA+ persons, and those who may contribute to the further diversification of ideas.

If you require accommodations at any stage of the interview process, please email us at View email address on click.appcast.io.

📌 Senior Systems Engineer , Remote Work (Toronto)
🏢 Lighthouse Hiring
📍 Toronto