Senior Linux System Engineer

About Nomad Digital

Nomad Digital is the world's leading provider of passenger and fleet connectivity solutions to the railway industry. Founded in 2002, and headquartered in the UK, currently serving more than 80+ global customers - in more than 40 countries - Nomad designs, builds, deploys and manages passenger Wi-Fi and on-board passenger infotainment systems. Nomad also provides remote online condition-based monitoring and maintenance solutions for optimising fleet management, operational performance and improving fuel economy.

When you join Nomad Digital, you will join a forward-thinking, fast-growing, fun environment with access to some of the very latest technology in its field. You will work with experts who innovate collaboratively, creating an environment of teamwork and trustworthiness.

Overview

Nomad has an exciting opportunity for an experienced Senior Linux System Engineer to join our global Engineering division in Montreal, Canada.

This role combines deep technical expertise with mentorship, serving as a final escalation point for complex issues while also elevating the overall technical capability of the team. The Senior Engineer will drive technical excellence and ensure that the infrastructure robustly supports Nomad's business objectives.

The senior engineer will provide informal training to the team on Nomad process, policy, tools, and products to ensure that quality standards meet or exceed business expectations. Those environments are built, deployed, and maintained with a lean mindset in support of business objectives.

This is a hybrid role, requiring the successful applicant to work from their home address, with the ability to attend the Montreal office when required.

Essential Duties and Responsibilities:

• Design, implement, and maintain Nomad's global network and server infrastructure, including data centres, VMware, and Azure cloud environments.

• Automate infrastructure provisioning, configuration, and management using tools such as Ansible or Puppet.

• Configure and manage network security, including FortiGate firewalls, Linux based firewalls, VPNs, and routing protocols like BGP.

• Administer and secure Linux-based systems (Ubuntu/Debian).

• Serve as a 3rd line escalation point for complex infrastructure incidents, performing deep-dive troubleshooting and root cause analysis.

• Develop, maintain, and proactively analyse infrastructure monitoring solutions (e.g., Zabbix) to identify bottlenecks, optimise resource utilisation, and ensure system reliability.

• Manage and support containerised applications using Kubernetes, including cluster administration and lifecycle management.