Linux Engineer With Scripting Exp. Required (Remote)

Job Responsibilities:

- Strong in LINUX scripting

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

• Articulate the reasons for DNS resolution failures, perceived or otherwise, using appropriate DNS and network utilities

• Generate DNS metrics, statistics and reports using shell scripting and programming languages such as bash, windows shell scripts, expect, tcl, powershell, vbs, javascript, php and python.

3. SMTP Support Requests

• Conduct e-mail traces for general troubleshooting

• Respond to abuse complaints

4. Anti-Virus and Spam maintenance

• respond to virus outbreaks

• respond to inquiries regarding anti-virus behavior

• respond to inquiries regarding anti-spam behavior

• Maintain SMTP logs and generate statistics using perl and shell scripting

5. Server maintenance

• Track bugs and security vulnerabilities

• Track and apply software updates

• Cisco ESA

• Infoblox DDI (DNS/DHCP/IPAM)

• Linux/UNIX software

• Sendmail

• Postfix

• BIND

• APACHE

• POSTGRE / MYSQL

• OpenSSH and OpenSSL

6. Password maintenance

• change production administrative (root) passwords monthly

• encrypt and distribute monthly password lists

7. Monitoring

• Respond to Solarwinds/network monitoring system notifications

• Maintain Solarwinds / network monitoring configuration, service checks, and configuration information

8. 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.

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

• Utilize an electronic Change Control and trouble-ticketing system to respond to end-user DNS & SMTP related issues and to track network and architectural changes to the network environment.

• Ability to communicate clearly and succinctly with a United States customer base, both in person, electronic communications, and via voice / video phone calls.

   

REQUIRED:

• 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

• 6+ years of progressive technical (hands-on) TCP/IP networking experience

• 6+ years of progressive technical (hands-on) DNS administration experience in an enterprise environment

• 6+ years of progressive technical (hands-on) SMTP administration experience in an enterprise environment

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

DESIRED:

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

• Microsoft Visio

• Splunk and Syslog

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

• Common monitoring protocols (e.g. SNMP )

• Cisco ESA / IronPort SMTP Appliances

• Postfix, Sendmail, Microsoft Exchange or Lotus Notes

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

• Infoblox DNS Appliances

• 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

• Expect

• TCL