Edge Systems and Security Engineer

Jobtailor; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Protex is seeking a seasoned systems and security engineer to own field provisioning, remote access, and OS management for our fleet of devices. You will deploy security tooling, manage kernels and updates, and design the box-to-production flow for new Protex devices.

You’ll maintain critical Linux infrastructure, identity, SSO, and MDM, enabling our engineering org to run smoothly and securely. The role emphasizes end-to-end ownership, proactive field support, and thorough documentation to

Qualifications

• 5+ years in systems administration, infrastructure, security engineering, or similar hands-on ops.
• Strong Linux fundamentals: packaging, init, networking, kernel troubleshooting, upgrades.
• Experience managing Linux fleet in the field: remote management, patching, observability.
• Degree in CS, Engineering, or related field.
• Hands-on with a mesh/VPN or zero-trust remote access solution.
• Solid networking: TCP/IP, DNS, NAT, firewalls, certificate handling.
• Experience deploying endpoint security and vulnerability scanning at scale.
• Experience with a major public cloud provider: compute, identity, monitoring, edge/IoT.
• Proficient in Python for automation and small services; Bash scripting.
• Security-minded: secrets management, least privilege, threat modelling.
• Owns work end-to-end: planning, delivery, documentation, cross-team cooperation.
• Responsive and proactive in field issues; willing to jump on urgent edge-device problems.
• Bias to documentation to reduce questions for others.

Responsibilities

• Own provisioning, access, security, and health of Protex devices in the field
• Run and evolve our remote access fabric for edge devices
• Deploy and operate security monitoring tools across remote devices
• Own OS updates, upgrades, and kernel/driver compatibility across the fleet
• Design end-to-end onboarding of a Protex device from box to production
• Maintain firewall, port, and endpoint docs for customer IT/security teams
• Manage internal Linux infra, identity, SSO, MDM, and day-to-day systems

Skills

Linux fundamentals

Fleet management

Python scripting

Bash scripting

Networking basics

Security mindset

Cloud provider experience

Zero-trust remote access

Documentation & automation

Education

Bachelor's degree in CS/Engineering

Tools

Mesh/VPN remote access

Job description

Responsibilities

• Own how Protex devices are provisioned, accessed, secured, and kept healthy in the field
• Run and evolve our remote access fabric for edge devices
• Deploy and operate security monitoring tools across remote devices via our existing device management platform
• Own OS updates, upgrades, and kernel/driver compatibility across the fleet
• Design how a brand-new Protex device goes from box to production
• Maintain the firewall, port, and endpoint documentation we hand to customer IT and security teams
• Internal Linux infrastructure, identity, SSO, MDM where relevant, and the day-to-day systems work that keeps the engineering org and the fleet running

Requirements

• 5+ years of professional experience in systems administration, infrastructure, security engineering, or a similar hands‑on operations role
• Strong Linux fundamentals - including package management, init systems, networking, kernel/driver troubleshooting, and OS upgrade paths
• Experience operating a fleet of Linux devices in the field (not just servers in a data centre) - remote management, patching, observability, recovery
• Bachelor's degree in Computer Science, Engineering, or a related field
• Hands‑on experience with a mesh/VPN or zero‑trust remote access solution
• 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
• Experience deploying and operating endpoint security and vulnerability scanning tools at scale
• Experience with a major public cloud provider, particularly the compute, identity, monitoring, and edge/IoT services
• Proficiency coding in Python - comfortable writing automation, tooling, and small services rather than only shell one‑liners
• Additional scripting and automation skills (Bash or similar) to make manual fleet operations go away
• A security mindset - secrets management, least privilege, threat modelling, and an instinct for what a customer security reviewer is going to ask
• Owns their work end‑to‑end: planning, delivery, documentation, and cooperation across teams
• Helpful and responsive - willing to jump on a field issue with urgency when an edge device or a customer is impacted
• Bias to write things down so the next person doesn't have to ask