UNIX Systems Administrator, Sr. jobs in Costa Mesa, CA

• JOB TITLE: Sr. Linux Systems Admin
• LOCATION: Irvine, CA 92606
• SHIFT: Full Time
• TYPE: Direct Hire
• SALARY: $120,000-$140,000 (DOE)
• Visa Sponsorship: Not Available, W2 employment ONLY, no Corp2Corp offered

• 95% CentOS linux environment
• Running hundreds of linux servers
• Only about 6 windows servers for EE’s – active directory
• VMWare ESX is preferred but any virtualization platform should be fine
• Ceph – rare data storage in conjunction with VM (by red hat)
• Apache tomcat, HA Proxies, Ansible
• MySQL, MariaDB

• Networking skills
• Interfaces on servers
• Exposure to configuring switch ports for servers

Duties:

• Installing, configuring and maintain servers and networks.
• Overseeing system performance and troubleshooting issues.
• Performing system upgrades following new releases.
• Maintaining internal documentation through Wiki.
• Sustaining network integrity, server deployment, and security.
• Monitoring and maintaining networks, servers and processes
• Adding, removing, or updating user account information, resetting passwords, etc.
• Answering technical queries and assisting users.
• Responsibility for security.
• Responsibility for documenting the configuration of the system.
• Troubleshooting any reported problems.
• System performance tuning.
• Make recommendations for future hardware and software upgrades.
• Remote administration of equipment in co-location facilities
• Other duties as assigned.

Requirements/Skills/Qualifications:

• Minimum 3-5 year experience working in a Linux environment.
• Minimum 3-5 year experience troubleshooting network and computer related problems.
• Solid understanding of Linux and Windows operating systems, common commands, and administrative tasks.
• Linux scripting experience.
• Experience with many of the technologies outlined above.
• A strong desire to learn new technologies and products.
• Strong verbal and written communication skills.
• Ability to work with a team.
• Ability to independently research and find solutions to problems.
• Ability to help users over the phone.
• Available to work nights and weekends as needed.
• Excellent attention to detail.
• Applicable industry certifications are preferred but not required. 

Technologies within the company environment:

• CentOS or RHEL or OpenBSD or Solaris
• VMWare ESX, ESXi 3.x / 4.x, procmox/overt  and other virtualization platforms
• Clustering , CEPH
• Apache Tomcat, Apache HTTP, HA Proxies, Ansible and NGINX
• MySQL, MariaDB, Galera, MongoDB, and NoSQL database platforms
• Linux IPTables, BSD PF Firewalls
• Dell, Quanta Switches, BGP and OSPF - Networking
• SMB, NFS and iSCSI
• Asterisk / Trixbox VOIP PBX
• Dell, HP, Supermicro, Server Enclosures
• Zabbix, Zimbra, Puppet, Job Scheduler, docker, Foreman, Kuberneties, Apache Camel, ActiveMQ
• SSH, HTTP, HTTPS, SFTP, FTPS, and SSL VPN communication