System Administrator (Government) at AT&T Careers - AT&T Careers
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Government Support Jobs

Keep the wheels of government turning 24/7. In a Government Support role, you’ll join a trusted team of experts who connect over 1,200 different agencies to serious security and mobility. Your work will help make the networks that our country runs on more protected, agile and effective. And with a wide range of opportunities (from Engineers to IT and Cyber Security), your continued growth can always be a top priority.

System Administrator (Government)

Washington , District of Columbia

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This position has responsibilities
for the day to day operations of a large national email gateway, management
of DNS services for the organization, and the upkeep and maintenance of the
servers/appliances on which the services run.


1. DNS Change Requests
  • Add/remove forward and reverse DNS
    entries
  • Process DNS server configuration
    changes
  • Manage DNS zone delegations
  • Process MX record changes
2. DNS Support Requests
  • Troubleshoot downstream DNS server
    problems
  • Interact with WAN and LAN
    administrators outside the U.S. Courts
  • Articulate the reasons for DNS
    resolution failures, perceived or otherwise, using appropriate DNS and
    network utilities

3. SMTP Support
Requests

  • Conduct e-mail traces for general
    troubleshooting
  • Respond to abuse complaints from persons
    outside the U.S. Courts
  • Anti-Virus and Spam maintenance
  • respond to virus outbreaks
  • respond to court inquiries regarding
    anti-virus behavior
  • respond to court inquiries regarding
    anti-spasm behavior
  • Maintain SMTP logs and generate
    statistics using pearl and shell scripting

4. Server maintenance
  • Track bugs and security
    vulnerabilities
  • Track and apply software updates
  • Polaris 8/9/10 patch clusters
  • IronPort C60
  • Infoblox DNSOne
  • UNIX software
  • sendmail
  • postfix
  • BIND
  • OpenSSH and OpenSSL
  • GNUpg (PGP encryption)
Password maintenance

1)         change production administrative
(root) passwords monthly

2)         encrypt and distribute monthly
password lists

Monitoring
1)         Respond to Nagios warnings
2)         Maintain Naigos checks

5. DNS/SMTP
Architecture

  • Analyze effect of MX record
    configuration on SMTP flow
  • Analyze effect of anti-spam and
    anti-virus policies on SMTP flow
  • Determine DNS best practices for
    delegated zones and slave zones
  • Maintain network and application layer
    diagrams using Visio
  • Develop and maintain Disaster
    Recovery and Remote Management procedures
  • Advise on future deployment and
    configuration of gateway SMTP and DNS services

6. Prepared to
participate in the team on-call rotation schedule as either a primary or
secondary member






Additional Information:

Required
Skills, Experience, and Education
:

•           Candidate must be a US Citizen

•           6+ years of progressive technical
(hands-on) experience related to Linux/Unix System Administration in an
enterprise server environment

•           TCP/IP networking
•           DNS administration

•           Ability to organize and prioritize
numerous customer requests in a fast paced, deadline driven environment

Required Clearance:  Public Trust
type background check with finger-printing and drug screening



Desired:

•           Security-related Network (Cisco)
and Operating Systems (Redhat) certification or training

•           Microsoft Visio
•           Splunk

•           Common monitoring applications
(e.g. Solarwinds, Nagios, OpenView)

•           IronPort SMTP Appliance

•           Postfix, Sendmail, qmail, or Exim
administration

•           Authentication and encryption
management (esp. using SSH, PGP, and SSL)

•           Infoblox DNS Appliance

•           Self-starter requiring limited
direction and supervision

•           Experience with at least one of the
following programming languages:

         Bourne Shell (sh, ksh, bash, zsh,
etc.)

         C
         AWK
         Perl
         Python



AT&T
is an Affirmative Action/Equal Opportunity Employer and we are committed to
hiring a diverse and talented workforce. EOE/AA/M/F/D/V



Job ID 1830064 Date posted 07/13/2018

AT&T a good place to be

Pros

I believe in AT&T and know they are at the edge of technology. The company believes in their people and offers all kinds of training to enable us to take on new jobs and to stay at the front of technology. The software defined network which we are building is the newest technology and AT&T has been involved since early 2000s. You have a great deal of autonomy at AT&T as long as you get the job done. You have the ability to do different jobs and to be challenged at all times.

Cons

I really have little negative to say about AT&T I have worked here for 35 years on March 23rd of 2016.

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