Systems Engineer (Linux)

• The Infrastructure Team builds and maintains the core foundation that powers all Protex systems, ensuring scalable data infrastructure, robust edge-to-cloud connectivity, and high-performance backend services
• We support edge deployments for real-time computer vision applications and deliver resilient systems to enable proactive workplace safety at global scale
• Within Infrastructure, this role sits at the intersection of systems administration, edge device operations, networking, and security, owning the layer between our cloud platform and the thousands of cameras and edge compute units running on customer sites across the world
• We’re looking for a Systems Engineer, Linux focused, to own how Protex devices are provisioned, accessed, secured, and kept healthy in the field
• You’ll be the technical lead for our remote access stack, OS lifecycle on the edge, fleet-wide patching and upgrades, endpoint security tooling, and the networking posture we present to some of the most security-conscious enterprises in the world
• You’ll work directly with Infrastructure, Edge Engineering, IT, and customer security teams at Fortune 500 logistics and manufacturing companies
• This is a hands-on role with a lot of surface area. You’ll be expected to build, document, and operate, and to raise our security bar without slowing the field team down. This role is 30% cloud, and 70% edge
• OS lifecycle - Own OS updates, upgrades, and kernel/driver compatibility across the fleet. Lead evaluation and migration work when we need to move to a more enterprise-grade base OS, including compatibility testing across our video analytics stack, GPU drivers, and device management agents
• Provisioning from get-go - Design how a brand-new Protex device goes from box to production: zero-touch or low-touch imaging, identity, secrets, certificates, remote access enrolment, device management registration, and first-boot validation. The bar is “an installer on a customer site can do it in minutes, every time.”
• Edge security & endpoint protection - Deploy and operate security monitoring tools across remote devices via our existing device management platform. Manage sensor policy, vulnerability scanning cadence, the firewall and endpoint documentation we share with customers, and the edge-compute performance budget we’re willing to spend on security tooling
• Networking & customer security posture - Maintain the firewall, port, and endpoint documentation we hand to customer IT and security teams. Be the technical voice in customer security reviews. Help close audits and procurement security questionnaires
• At Protex AI, you’ll work on cutting-edge problems with a mission-driven team. You’ll have ownership, autonomy, and the opportunity to make a tangible impact on workplace safety around the world
• This role in particular gives you a clean slate over the edge security and remote access story for a fleet that’s already deployed across 20+ countries - the work you do will show up in every customer security review we run

Benefits

• Company Laptop (Choice of Mac or Windows)

• Participation in Employee Share Option Programme

• Monthly Company Events

• Pension Scheme

• Health Insurance & Wellbeing Allowance

• Truly Unlimited Holidays

• Nomad Working for 20 Days

• Remote and Hybrid working opportunities

• Mindset:

• Experience operating a fleet of Linux devices in the field (not just servers in a data centre) - remote management, patching, observability, recovery

• 1 year minimum networking experience

• Helpful and responsive - willing to jump on a field issue with urgency when an edge device or a customer is impacted

• Additional scripting and automation skills (Bash or similar) to make manual fleet operations go away

• Bachelor’s degree in Computer Science, Engineering, or a related field

• Strong Linux fundamentals - including package management, init systems, networking, kernel/driver troubleshooting, and OS upgrade paths

• Owns their work end-to-end: planning, delivery, documentation, and cooperation across teams

• A security mindset - secrets management, least privilege, threat modelling, and an instinct for what a customer security reviewer is going to ask

• 3-8+ years of professional experience of Linux experience, systems administration, infrastructure, security engineering, or a similar hands-on operations role

• Proficiency coding in Python - comfortable writing automation, tooling, and small services rather than only shell one-liners

• Bias to write things down so the next person doesn’t have to ask

• Solid networking knowledge: TCP/IP, DNS, NAT/firewalls, outbound-only architectures, certificate handling, and how to explain all of the above to a customer’s security team

• Excellent communication skills, with the ability to effectively convey complex technical concepts to both technical and non-technical audiences

• Experience with AWS security services

• Experience with managed edge / IoT deployment platforms and remote component delivery

• Experience responding to enterprise customer security reviews at Fortune 500 scale