Linux Systems Administrator (202608)

PURVIS; Newport (RI); On-site; USD 80,000 - 110,000; Full time

Job summary

PURVIS Systems is seeking a Systems Administrator with a strong Linux background to design, deploy, and maintain Linux-based computing environments in secure, mission-focused settings. The role emphasizes Red Hat Enterprise Linux, virtualization, and TCP/IP networking.

The ideal candidate will troubleshoot across OSI layers, assist with network integration, and support cybersecurity requirements including DISA STIG implementations. Travel is expected up to 10%.

Qualifications

• Bachelor’s degree in a related technical field is required.
• 2–3 years of relevant Linux administration, systems engineering, or networking experience preferred.
• Strong hands-on experience with Red Hat Enterprise Linux (RHEL) or similar enterprise Linux distributions.
• Experience with virtualization technologies and network diagnostic tools.
• Knowledge of cybersecurity practices, vulnerability remediation, and DISA STIGs.

Responsibilities

• Design, configure, integrate, maintain, and troubleshoot Linux-based computing environments.
• Administer and maintain RHEL systems including installation, configuration, patching, upgrades, performance optimization, and lifecycle management.
• Troubleshoot OS, hardware, software, storage, application, and network issues.
• Configure and troubleshoot Linux networking (interfaces, DNS, DHCP, firewall, TCP/IP).
• Support network infrastructure: switches, VLANs, trunking, routing, segmentation.
• Assist with troubleshooting connectivity and performance using common Linux/network tools.
• Develop and maintain system configurations and engineering procedures.
• Support system architecture, integration, testing, deployment, and maintenance.
• Travel up to 10%.

Skills

Linux system administration

RHEL

Networking (TCP/IP)

Scripting (Bash/Python)

Ansible

Security hardening

DoD/regulatory environments

Troubleshooting

Documentation

Communication

Education

Bachelor’s degree in Systems Engineering, Computer Engineering, Computer Science, Information Technology, Cybersecurity, or related field

Tools

VirtualBox

VMM

tcpdump

Wireshark

Job description

PURVIS Systems is a technology solutions partner that develops, implements and maintains mission-critical solutions for federal and local government agencies.

PURVIS Systems has an immediate opening for a Systems Administrator with a strong background in Linux system administration and working knowledge of network engineering. The ideal candidate is a technically skilled and dependable Systems Administrator with experience designing, integrating, configuring, maintaining and troubleshooting Linux-based systems and supporting network infrastructure in secure, mission-focused environments.

The individual should have hands-on experience as a Linux Systems Administrator with a strong understanding of Red Hat Enterprise Linux (RHEL), virtualization, TCP/IP networking, system security, troubleshooting and system integration.

The day to day responsibilities of a this role will include:

• Design, configure, integrate, maintain, and troubleshoot Linux-based computing environments.
• Administer and maintain Red Hat Enterprise Linux (RHEL) systems, including installation, configuration, patching, upgrades, performance optimization, and lifecycle management.
• Apply Linux System Administrator experience to troubleshoot operating system, hardware, software, storage, application, and network-related issues.
• Configure and troubleshoot Linux networking, including network interfaces, routing tables, DNS, DHCP, firewall rules, and TCP/IP connectivity.
• Support the configuration and troubleshooting of network infrastructure, including managed switches, VLANs, trunking, routing, and network segmentation.
• Assist with troubleshooting network connectivity and performance issues using common Linux and network diagnostic tools.
• Support integration of Linux servers and workstations with existing LAN and enterprise network infrastructure.
• Develop, test, document, and implement system configurations and engineering solutions supporting mission-critical systems.
• Support system architecture, integration, testing, deployment, sustainment, and technical refresh activities.
• Support virtualized environments using Virtual box, or similar enterprise virtualization technologies.
• Perform system and network patching, vulnerability remediation, and security hardening in accordance with applicable Information Assurance requirements and DISA STIGs.
• Support cybersecurity and Information Assurance activities, including vulnerability assessments, remediation, IAVAs, IAVBs, technical advisories, and security compliance.
• Analyze system and network performance, reliability, and availability and recommend engineering improvements where appropriate.
• Develop and maintain system and network documentation, including system configurations, network diagrams, engineering procedures, installation procedures, and troubleshooting guides.
• Support system backups, recovery procedures, software deployment, configuration management, and system installation activities.
• Work with systems, network, and cybersecurity teams to investigate and resolve complex technical problems from initial diagnosis through final resolution.
• Provide technical support during system integration, testing, installation, and deployment activities.
• Travel requirement for this position is 10%.

Qualifications

• Bachelor’s degree in Systems Engineering, Computer Engineering, Computer Science, Information Technology, Cybersecurity, or a related technical field required.
• Professional experience working as a Linux System Administrator, Systems Engineer, or in a comparable Linux-focused technical role.
• 2 – 3 years of relevant systems administration, systems engineering, integration, networking, or related technical experience preferred.
• Strong hands-on experience administering Red Hat Enterprise Linux (RHEL) or comparable enterprise Linux distributions.
• Experience with Linux installation, configuration, patching, troubleshooting, system services, networking, storage, permissions, and security.
• Working knowledge of network engineering concepts including TCP/IP, IPv4, subnetting, DNS, DHCP, VLANs, switching, routing, network segmentation, and firewalls.
• Experience configuring or troubleshooting managed Ethernet switches and VLAN-based network environments preferred.
• Ability to troubleshoot connectivity issues across the OSI model, including physical, data-link, network, and application-layer issues.
• Familiarity with network diagnostic tools and utilities such as ping, traceroute, tcpdump, Wireshark, netstat/ss, and similar tools.
• Experience with virtualization technologies such as Virtual Box and VMM preferred.
• Experience with scripting or automation using Bash, Python, Ansible, or similar technologies preferred.
• Knowledge of cybersecurity practices, vulnerability remediation, DISA STIG implementation, system hardening, and Information Assurance requirements.
• Experience supporting systems and networks within DoD, federal government, or other regulated environments preferred.
• CompTIA Security+ certification or ability to meet applicable DoD Cybersecurity Workforce/IAT requirements.
• RHCSA, RHCE, CCNA, Network+, or equivalent Linux/network certification preferred but not required.
• Strong analytical, troubleshooting, documentation, communication, and problem-solving skills.
• Ability to work independently while collaborating effectively with systems, networking, cybersecurity, and software engineering teams.

This position requires the candidate to have/obtain a government security clearance to the level of SECRET.

PURVIS has been committed to sustainable growth since our inception in 1973, striving for continual improvement without ever losing sight of our core values: transparency, integrity, and teamwork. We provide the tools and path for each employee to be successful – and in return, ask you to play a pivotal role in helping your peers and clients be successful, providing top-notch teamwork and service. Peace of Mind at PURVIS means knowing your work provides immeasurable value to our team, our partners and our clients.

The PURVIS Team values the health and financial security of every employee. This is why we have chosen to offer all full‑time employees a comprehensive package of group benefit programs with enrollment options intended to offer flexibility – in both plan selection and level of coverage to maximize the value of your benefits as cost effective and affordable without compromising quality.

PURVIS values the diversity of our team. We provide equal employment opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.