Linux Systems Engineer

## Linux Systems Engineer Apply:
Onsite Nightwing:
VA543: 22270 Pacific Blvd, Dulles 22270 Pacific Boulevard Building CC5, Sterling, VA,  USA:
Full time:
Posted Today:
JR102182

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets.  

Roka Security is seeking a highly skilled Linux Systems Engineer to design, deploy, optimize, automate, and support large-scale Linux infrastructure supporting secure networking and remote-access services. This role is ideal for an engineer with deep expertise in Linux networking, policy-based routing, infrastructure automation, and modern VPN technologies including Wire Guard, OpenVPN, and IPSec. The successful candidate will collaborate closely with engineering, systems administration, and platform engineering teams to deliver highly available, secure, and scalable infrastructure solutions in mission-critical environments.
** KEY RESPONSIBILITIES
** Linux Infrastructure Engineering:
• Design, deploy, administer, and maintain enterprise Linux environments
• Develop standardized operating system configurations and hardened baseline builds
• Perform operating system upgrades, patch management, lifecycle maintenance, and performance optimization
• Troubleshoot complex operating system, networking, and application issues

Network Engineering:
• Configure and troubleshoot OSPF and static routing, VLANs, LACP, 802.1Q trunking, network name spaces, VRFs, NAT and firewall policies
• Analyze and troubleshoot network traffic using tcpdump, Wireshark, iproute2, nftables, and iptables
• Design, deploy, and support secure VPN infrastructures using OpenVPN 2.6+, Wire Guard, and IPSec
• Troubleshoot encryption, routing, MTU, and performance issues while implementing modern cryptographic standards and VPN hardening best practices

Configuration Management & Automation:
• Automate system provisioning, configuration deployment, compliance enforcement, VPN deployments, and security baseline management
• Integrate Salt Stack with CI/CD pipelines and infrastructure monitoring platforms

Collaboration and Documentation:
• Collaborate with cross-functional teams to support project initiatives and resolve technical issues
• Document system configurations, procedures, and troubleshooting steps for knowledge sharing and training purposes
• Contribute to knowledge base articles and best practices documentation
** REQUIRED QUALIFICATIONS
*
* Education:

• Associate or Bachelor's degree in Computer Science, Information Technology, or related field; OR equivalent combination of technical training and hands-on experience

Technical

Skills:

• Operating Systems:
Strong hands-on experience with Debian and Ubuntu Linux
• Networking:

Experience with dynamic and static routing, VLANs,  trunking, NAT and firewall policies
• VPN:

Experience with Wire Guard, OpenVPN 2.6+, IPSec, PKI and certificate management.
• Automation & Scripting:

Experience with Bash, Git, and CI/CD workflows

Professional

Skills:

• Exceptional troubleshooting and root-cause analysis capabilities
• Strong documentation and technical writing skills
• Ability to operate independently in mission-critical environments
• Security-first mindset with strong infrastructure design principles
• Excellent collaboration and communication skills
** PREFERRED QUALIFICATIONS*
* •…