NetOps/Linux Administrator

Sentar•Pearl City, HI

16d•Onsite

About The Position

Sentar is seeking a NetOps/Linux Administrator in Pearl City, Hawaii. The Network Operations/Linux Administrator manages and maintains cloud and on-premises networking environments, including VPNs, cloud networks and virtual network appliances, and on-premises network infrastructure and hardware. The role helps ensure network infrastructure and subscriber connections perform reliably and remain available and secure. It uses communication, analytical, and problem-solving skills to identify, communicate, and resolve network issues and maximize the value of IT systems investments. The administrator installs, configures, and maintains Linux servers and services, monitors system and network health, and manages backups, recovery, patches, upgrades, accounts, and network rights. The position also manages cloud networking solutions and on-premises network equipment, supports secure remote access, implements security measures, optimizes performance and capacity, maintains documentation, and collaborates on network projects and application integrations. After-hours on-call rotational support is required as necessary. Candidates must hold a Secret clearance with eligibility for upgrade to Top Secret, and meet a DoD 8140 baseline certification requirement at hire. A bachelor’s degree in a relevant field or equivalent work experience is required. Sentar describes its culture as inclusive and employee-owned, and offers a range of benefits, leave programs, and development support.

Requirements

Hold a Secret clearance with eligibility for upgrade to Top Secret (TS).
Meet a DoD 8140 (formerly 8570) baseline certification requirement at the time of hire; commonly accepted certifications include Security+, CISM, or CISSP.
Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent work experience.
Minimum of 3–5 years of experience in network engineering.
Proficiency with Linux operating systems, specifically Red Hat.
1–2 years of Linux server administration experience.
Proficiency in cloud networking solutions such as AWS VPC or Azure VNet.
Experience with on-premises networking hardware such as Cisco or Palo Alto.
Knowledge of networking protocols and services, including TCP/IP, DNS, DHCP, and VPN.
Experience with network monitoring tools such as SolarWinds or Nagios.
Strong understanding of network security principles and practices.
Experience with Elasticsearch Enterprise and Kibana dashboards.
Strong troubleshooting, problem-solving, and documentation skills.
Strong verbal and written communication skills.

Nice To Haves

Certifications such as Red Hat Certified System Administrator (RHCSA), Red Hat Certified Engineer (RHCE), or CompTIA Linux+.

Responsibilities

Install, configure, and maintain Linux servers and components to ensure performance, security, and availability.
Monitor system integrity and availability, including hardware, server resources, systems, and key processes.
Administer Linux-based services, including Apache, NGINX, MySQL, and PostgreSQL; implement and oversee backup and recovery solutions.
Apply operating system patches and upgrades and update administrative tools and utilities.
Manage accounts and network rights.
Manage and monitor cloud networking solutions such as AWS VPC and Azure VNet.
Configure, maintain, and troubleshoot on-premises networking hardware, including routers, switches, firewalls, and load balancers.
Set up, oversee, and maintain VPNs for secure remote access.
Monitor network performance and optimize for high availability and reliability.
Implement and oversee network security measures, including firewalls, IDS/IPS, and network access controls.
Perform network performance tuning, capacity planning, and scalability assessments.
Execute network hardware and software upgrades and patches.
Maintain network documentation, including diagrams, configuration guides, and troubleshooting procedures.
Collaborate with IT teams to integrate and enhance network resources for applications and services.
Oversee network-related projects from planning through implementation and documentation.
Research emerging network technologies, trends, and best practices.
Work independently and collaboratively in a team-oriented environment.
Provide after-hours on-call rotational support as necessary.

Benefits

Voluntary medical, dental, and vision coverage, with Health Savings or Flexible Spending Plan options.
Voluntary life, critical illness, accident, and long-term care insurance options.
Group term life and short- and long-term disability coverage provided to qualifying employees.
401(k) match.
Competitive PTO plan that increases quickly with years of service.
Holiday schedule and other leave programs, including bereavement, maternity, jury, and military duty leave.
Mental health awareness programs.
Tuition reimbursement.
Professional development reimbursement.
Recognition and awards programs.
Employee ownership.