Linux Systems Administrator

Sgs Consulting - Lexington, MA

Full-time - Mid Level

Lexington, MA

Professional, Scientific, and Technical Services

About the position

The Linux Systems Administrator will primarily focus on managing and supporting IT systems infrastructure, with a strong emphasis on Linux platforms. The role requires in-depth Linux experience and the ability to work effectively within a small, fast-paced team. The candidate will be responsible for system administration, troubleshooting, and vulnerability remediation across secure and unclassified systems.

Responsibilities

• Manage, administer, and support all Client IT systems infrastructure in the Group.
• Support additional technologies as they are adopted by the Laboratory.
• Responsible for vulnerability remediation on secure and unclassified Laboratory systems, addressing Cat 1, 2, 3 issues in a timely manner.
• Recognize and troubleshoot issues with developer machines across various Operating Systems including Windows and Linux.
• Perform all related duties as assigned.

Requirements

• Approximately 5 years of Linux administration experience.
• Proficient in RedHat Enterprise Linux and VMware.
• Experience with Dell hardware.
• Familiarity with RedHat Satellite, McAfee, Enterprise Central Logging/Splunk, LDAP, VMware vCenter/ESXI/vSAN, and Gitlab.
• Knowledge of networking applications and protocols such as TCP/IP, DNS, NTP, SSH, FTP, and HTTP/S.
• Proficient in programming languages such as Ansible, Shell Scripting, PowerShell, or Bash.
• Skilled in centralized authentication (SSSD, IDM, Active Directory) and centralized sudo administration via IDM.
• Experience in configuring and maintaining both physical and virtual servers and researcher workstations.
• Ability to install, update, and troubleshoot systems/servers.
• Experience in developing and documenting systems administration standard operating procedures.
• Ability to plan, execute, and verify data redundancy and system recovery procedures.
• Conduct periodic system maintenance including cleaning, disk checks, routine reboots, data dumps, and testing.
• Provide ongoing optimization and problem-solving support.

Nice-to-haves

• Experience managing classified IT systems, STIGs, SCAPS, RMF.
• Certifications in Red Hat, VMWare, CISSP, CompTIA Security+, or Linux Professional Institute Certification.
• Experience managing system/server resources including performance, capacity, availability, serviceability, and recoverability.
• Mac experience.
• Experience with virtual machines such as VMWare vSphere, Citrix XenDesktop/Server, Amazon Elastic Compute Cloud.
• Network administration experience including managing data center and small network configurations: switches, routers, firewalls, and modern software management and monitoring tools.
• Experience maintaining directory services such as Microsoft Active Directory and LDAP.

Benefits

• Health insurance
• 401k
• Paid holidays
• Professional development opportunities