Position           UNIX Systems Administrator - Senior Level
Location           Dallas, TX
Employment / Duration            Contract
Interview Style Telephonic / In-person
Mandatory Skills:

• Configuration Code Development,
• IP Networking,
• Cisco Routers
• Bourne Shell and
• Switches

Summary:
UNIX systems administrator, expanding, maintaining, and designing core infrastructure solutions.
Responsibilities and Duties

• Maintain and expand function of a very large Linux, FreeBSD, XenServer, and NetScaler systems fleet.
• Develop centralized configuration code.
• Identify and remediate any and all security vulnerabilities and issues.
• Support development teams from within and outside the organization in making use of core infrastructure.
• Configure switches and load balancers for core internal rows.
• Coordinate with datacenter operations personnel for hardware turn-ups and turn-downs.
• Continually improve systems and processes with regard to automation and monitoring.
• Participate in 24x7 on-call rotation.

Minimum Required Qualifications and Skills

• Strong, deep knowledge of Linux and/or FreeBSD computer operating systems.
• Very solid understanding of IP networking concepts.
• Intermediate to advanced programming and scripting abilities in multiple languages, which must include the bourne shell.
• Experience configuring routing and switching hardware.
• 2+ years' experience developing centralized configuration code.
• 5+ years' experience as a UNIX systems administrator.

Desired Additional Qualifications and Skills

• 10+ years' experience as a UNIX systems administrator.
• 5+ years' experience developing centralized configuration code.
• Strong Ruby programming ability.
• Extensive experience with Citrix XenServer.
• Extensive experience with Citrix NetScaler.
• Advanced understanding of IP networking, packet framing, and dynamic routing protocols.