Linux / Network Administrator , Chicago, IL Back>>

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Linux/Network Administrator


Seeking a Linux/Network Systems Administrator to help develop state-of-the-art, real-time automated trading system.  In addition to possessing excellent analytical and technical skills, the successful candidate will be a creative problem solver, a clear communicator, and a strong team player.

Required Skills:

-Strong interpersonal and communication skills; capable of writing purchase justifications, making presentations to an internal audience, and interacting positively with developers, and management.
-Ability to solve problems quickly and automate processes.
-Must be available on-call during off hours.
-Must be able to work in time sensitive production environments.
-Must be able to work independently.
-Familiarity with NFS, SAN, iSCSI and other network based storage solutions.
-A strong understanding of a UNIX-based operating system; understands paging and swapping, inter-process communication, devices and what device drivers do, filesystem concepts (inode, clustering, logical partitions).
-Familiarity with fundamental networking/distributed computing environment concepts; can configure NIS, NT domains; Centralized authentication using NIS, LDAP, etc.
-Comfortable maintaining a local yum repository, building custom RPM’s and deployment.
-Experience installing, upgrading, backing up databases such as PostgreSQL and MySQL.
-Experience with automated machine builds/installs.
-Ability to write scripts in some administrative language (Perl, Python, shell).
-Experience with networking equipment, architectures, protocols and troubleshooting tools (i.e. ping, dig, tcpdump, wireshark).
-Expertise in LAN protocols such as BGP, HSRP, EIGRP, Spanning Tree Protocol, and VLAN trunking.
-Hands-on experience with WAN network topologies and hardware (Private Line, Frame Relay, DSL).

Required Background:

-A minimum of 5 years of System Administration experience; RedHat Linux, or similar distribution, is required.
-A minimum of 3 years of Network Administration experience; Cisco and/or Arista is required.

Desirable Background & Skills:

-A degree in computer science or a related field.
-Programming background in any applicable language.
-Experience with the following applications, or tools:  Symantec BackupExec, Hadoop, OpenNMS, cfEngine.
-Knowledge of Financial Markets.
-Experience with kernel performance tuning and concepts.  The ideal candidate would be able to configure, and troubleshoot network performance at a system, and LAN level.
-Experience with configuration management tools such as puppet or cfEngine.
-Familiarity with Windows Server, including Active Directory and SSSD/LDAP.
-Experience with virtualization technology and VmWare.
-Experience using SCCS; git or cvs preferred.


-Work collaboratively to provide technical assistance, and coverage to a small, complex site & wide area network.
-Occasional travel and weekend work may be required.
-Work under general direction from development, and IT team members.
-Establish/recommend policies on system use and services.
-Set up, configure and support Linux/Windows servers and Desktops.
-Configure and troubleshoot Web, SQL and Application servers.
-Perform troubleshooting of network problems utilizing network analyzers and/or sniffers and other troubleshooting tools.  Test and evaluate various equipment, systems, IOS’s and procedures for use within the network.
-Assist in configuring and implementing network monitoring and management systems.
-Assist in implementing and monitoring network security.
-Evaluate new network software and hardware that will enhance the network environment.
-Analyze production or development problems to determine whether they are caused by network software malfunctions and make corrections as needed.


For more information about this opportunity contact:

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