Senior Linux Systems Administrator

Senior Linux Systems Administrator

Location: Dulles, VA

Must have an active Secret clearance

Node is supporting a U.S. Government customer on a large mission-critical development and sustainment program to design, build, deliver, and operate a network operations environment, including introducing new cyber capabilities to address emerging threats.

Node is seeking a Sr. Linux Systems Administrator to support the design, development, and deployment of advanced cybersecurity capabilities.

The Sr. Systems Administrator applies expert knowledge in Linux/Unix environments for infrastructure support to an advanced cybersecurity environment. Works with a team of highly skilled administrators to provide senior-level administrative expertise for an RHEL environment. Mentors junior system administrators and recommends design changes to improve the system's operability.

Requirements

Required Skills:

- Must be a US Citizen

- Must have an active Secret clearance and be able to obtain a TS/SCI clearance

- Must be able to obtain DHS Suitability

- 6+ years of system administration in Linux, ideally Red Hat Enterprise Linux version 7 or 8 (RHEL7 / RHEL8) with the ability to engineer, install, administer, and maintain complex system architectures

- Experience with Linux OS installation, security hardening, and maintenance

- Experience with administration and management of Linux servers including installation, configuration, optimization, backup & recovery

- Experience with Linux performance tuning & troubleshooting, identifying and resolving contention in CPU, memory, networking, disk I/O, etc

- Skilled in Linux-related scripting (Bash, Perl, Python, etc.)

- Experience with products such as Red Hat Satellite Server, Puppet, Chef, and/or Ansible

- Ability to manage changes to the system and assess the security impact of those changes

- Integration & implementation experience with various services, LDAP, Samba, NFS, Bind, Apache, and other core technologies

- Familiarity with configuration management

- Strong research, analytical, and problem-solving skills

- Good communication skills including preparing and presenting results, findings, and alternatives and influencing management decision-making based on the best available data

Desired Skills:

- Experience with Infrastructure as Code (IaC) using Ansible or other comparable products

- Experience working in an agile development environment

- Experience with software development using Java, RESTful services

- Comfortable with multilevel security systems, SELinux, and/or Cross Domain Solutions

- Experience with data orchestration software such as Apache NiFi or StreamSets

- Experience with distributed computing environments such as Hadoop

- Experience with Amazon Web Services (AWS) platform capabilities, including a good understanding of the Amazon Web Services (AWS) Well-Architected Framework, AWS certification

- Experience working in AWS via the CLI and management console. Knowledge and experience configuring Virtual Private Clouds (VPCs)

- Experience working in DevOps and/or DevSecOps environments

- Familiarity with the following technologies in a cloud environment: ELK Stack (ElasticSearch, Logstash, Kibana), Ansible, Nessus, Zscaler, ClamAV, AIDE, Splunk, DNS, NAT, git, Docker, Kubernetes, OpenShift, Jenkins

Required Education:

Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, or related technical field. Two years of related work experience may be substituted for each year of degree-level education.

Desired Certifications:

- DoD 8570.1 IAT Level II

- Red Hat Certified System Administrator (RHCSA)

Company Overview:

Node.Digital is an independent Digital Automation & Cognitive Engineering company that integrates best-of-breed technologies to accelerate business impact.

Our Core Values help us in our mission. They include:

OUR CORE VALUES

Identifying the~RIGHT PEOPLE~and developing them to their full capabilities

Our customer’s “Mission” is our “Mission”. Our~MISSION FIRST~approach is designed to keep our customers fully engaged while becoming their trusted partner

We believe in~SIMPLIFYING~complex problems with a relentless focus on agile delivery excellence

Our mantra is “~Simple*Secure*Speed~” in the delivery of innovative services and solutions

Benefits

• Medical (100% Coverage for Employee)
• Dental
• Vision
• Basic Life (100% C