Senior Linux & Network Engineer: Automation & Security

Digital Cloak; Stafford (VA); On-site; USD 90,000 - 120,000; Full time

Job summary

Digital Cloak in Stafford, VA seeks a skilled Linux and Network Engineer to operate as a matrixed resource managing enterprise infrastructure and delivering client solutions. You will lead or contribute across multiple workstreams with minimal supervision and occasional after-hours support for uptime.

The role requires hands-on experience in Linux, virtualization, containerization, and security hardening, with strong collaboration with clients and internal teams to ensure reliable operations.

Qualifications

• Expert-level Linux system administration in a production environment.
• Strong Bash and Python for building tooling, not just one-off scripts.
• Hands-on networking experience with pfSense/OPNsense/Cisco/Aruba devices.
• Proxmox VE experience: VM provisioning, SDN, Ceph storage.
• Docker experience: building images, Compose stacks, container networking.
• Ability to methodically isolate root cause in complex multi-layer environments.
• Excellent communication skills for technical and non-technical audiences.
• Adept leadership and collaboration, with ability to guide others.
• Self-starter with ownership of outcomes.
• Cybersecurity and system hardening experience.
• Automation-first mindset: develop tooling to scale daily work.

Responsibilities

• Own the internal Linux servers, enterprise apps, network infrastructure, and end-user computing.
• Perform patching, maintenance, and lifecycle management across systems and devices.
• Maintain environment uptime and respond to rare after-hours issues when needed.
• Configure and manage routers, firewalls, switches, and wireless networks (pfSense/OPNsense/Cisco/Aruba).
• Build, operate, and optimize Proxmox virtualization; VM provisioning, SDN, Ceph storage.

Skills

Linux admin

Bash scripting

Python scripting

Networking

Proxmox VE

Docker

Ceph storage

Root cause analysis

Technical writing

Security hardening

Education

Bachelor's degree in CS/IT or related field

Equivalent 3-5 years hands-on experience

Tools

Proxmox VE

Docker

Kubernetes

pfSense/OPNsense

Cisco/Aruba

Job description

Digital Cloak in Stafford, VA seeks a skilled Linux and Network Engineer to operate as a matrixed resource managing enterprise infrastructure and delivering client solutions. You will lead or contribute across multiple workstreams with minimal supervision and occasional after-hours support for uptime.

The role requires hands-on experience in Linux, virtualization, containerization, and security hardening, with strong collaboration with clients and internal teams to ensure reliable operations.