Linux/UNIX Systems Administrator

Stephen Mueller

***** ******

Dallas, *****, Texas, US

Phone: 505-***-****

E-mail: *******@*****.***

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OBJECTIVE

To obtain a position in which my problem solving skills as well as my

ability to master new things is challenged. I am a fast study, and have

an innate ability to find problems, recommend and implement the appropriate

resolution.

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WORK EXPERIENCE

Cloud Support Engineer IV

October 2013 - April 2014

Amazon Irving, TX

This role was responsible for providing excellence and in-depth technical

knowledge for customers who paid for Premium Support and Developer Support.

My focus was primarily on EC2 Linux and I was selected to additionally

focus on Route53, S3, CloudFront, CloudFormation, and ElasticBeanstalk.

My case work was regularly rated by customers with five stars (highest

rating) including one instance where a customer claimed I was a '(profanity

not included) genius'.

Additionally, I expanded upon my prior work by developing a 'push-button'

(CloudFormation) cloud infrastructure based on the PHPFox product.

I was selected to participare in local hiring events, conducting technical

phone screenings, and selecting canidates to be extended an offer.

I was also chosen to author presentations for local university Linux User

Groups specific to how Linux and Amazon Web Services function.

Customer System Administrator

July 2012 - May 2013

SoftLayer Dallas, TX

This is an entry level role within the company, providing support to

customers who have 'self-managed' servers within SoftLayer Data Centres.

Most of the issues are very simple and easy to resolve however a few times

a week there are those issues that require dilegent research and perfect

execution, to deliver satisfactory results.

This role offered me the opportunity to further grow and develop my Linux

skills to get them on-par with my previous UNIX/Solaris skillset.

Consultant - Senior Linux System Administrator

October 2011 - February 2012

Dell/Marketvine Austin, TX

Consulting for a startup focused on social e-commerce innovation, funded by

Dell Inc.

I was brought in to be the company's first staff, Senior Linux System

Administrator. The production, staging production (pre-release), quality

assurance, and development systems, were all built by non-system

administrators. Most of the developers had root passwords, there were other

developers logging in using shared accounts, and service accounts (mysql,

cassandra, apache).

I advised on and implemented many best practice and ITIL recommended

practices for the production and stage production infrastructure.

Major accomplishments:

* Take on ownership and responsibility for all Linux systems

* document the enviroment as it exists today, and document any/all new

processes

* deploy services and software, as business need demands (mysql, memcache,

rabbitmq and tomcat/apache with php)

* assist other teams with Linux expertise, as required

* automate (Korn shell) tracking events as reported from analytics systems

* created DNS infrastructure to in-source DNS (BIND 9) services for all

company domains

* automate sales tracking verification (Korn shell)

* provide issue resolution for tape backup failures in the enviroment

* disabled remote root access and staff use of daemon users

* recommended a set maintenance window, and set one

* initiated an on-call rotation to handle off-hours service inturuptions

* tasked with interviewing and select additional Linux System and DataBase

Administrators

* configured all the Linux systems to write log data to a centralized

syslog server

* gained responsibility for company's nagios-based monitoring solution

* tasked with selecting an Austin area Data Center providing co-location

services to in-house the top to bottom maintenance of all systems

* initiated a patch management and deployment scheme in addition to

installing or compiling open source software for use on all systems

Consultant - Linux/UNIX

July 2009 - September 2011

Various Other/Not Classified

Consulting for various employers on a short term basis or on fairly small

projects

* successfully migrated developers off varied platforms (HP-UX, AIX,

Solaris, IRIX, Xenix, True64, Unicos, VAX) to Linux

* tuned Linux based LAMP solutions for maximum performance

* recovered an entire LAMP solution after a hard disk failure and restored

the site to full functionality in less than 48 hours (no backups!)

* automated several processes that were formerly either run manually, or

should have been run, but were not being run at all. Some of the work

involved daily housekeeping on the server, mail queue management, user

add/remove/change, software updates

* configured VMWare cluster and created several hundred VMs, based on

developer sourced requirements (mostly Linux, some Solaris x86, a few Zones

and Containers on Solaris)

* administered a Linux based (LAMP stack) social network for an adult

entertainment company, including server maintenance, performance tuning,

disaster recovery, database replication and backup (MySQL)

* recovered all data and services from a compromised Linux server and

secured the solution, insuring a breach would be much more difficult in the

future

* documented the regular system administration duties on a Linux solution,

so that anyone with general Linux/UNIX knowledge could come in behind me,

and continue to run a Linux based online adult content distributor

* resolved system issues and doubling Linux performance, resulting in the

solution delivering 2TB of content to end users daily, where prior to my

work the server could only deliver 134GB per day (tuning and issue

resolution)

Unix/Linux, adminstration linux (LAMP), UNIX/Solaris/Linux, Sendmail,

Vmware,

Senior Systems Engineer

December 2009 - June 2010

Sungard Availability Services LP Houston, TX

Computer/IT Services

Provide excellent service to customers

* handle tickets in an orderly manner as the are assigned to Enterprise

Operations - UNIX

* serve as primary systems engineer on assigned accounts (some

large/strategic accounts)

* provide expertise as a systems engineer (Solaris) for other accounts as

required

* provide on-call systems engineer for all Enterprise UNIX customers as

scheduled (rotation)

* provide systems expertise on DR exercises as assigned/required

* assist assigned customer accounts with SAN replication & general SAN-

based filesystem maintenance

* work with customers to ensure the High Availability Oracle Databases were

maintained and actually delivered high availability.

* attend and provide input/suggestions on internal and customer facing

meetings/calls

* assist with technical interviews for new UNIX candidates

- developed a standard set of questions for Senior Level candidates that

was peer reviewed and accepted

**Nominated by a very large/strategic customer for a service excellence

award**

Solaris UNIX, Veritas Volume Manager, Veritas File System, Veritas Cluster

Server, IBM Websphere, Apache, Apache 2.0, Sendmail, Linux,

Senior Systems Engineer

June 2004 - May 2009

at&t Richardson, TX

Internet Services

* Flawlessly planned/migrated over a million customer accounts (domains)

from BIND8 to BIND9.

* Upgraded over 400 Solaris 8 systems to a standardized Solaris 10 build

(flash archive)

Consolidated 100 small Solaris nodes, onto larger systems that served

larger regions

* Designed/Administered two dozen Enterprise class Solaris 10 based servers

that provided authoritative DNS service to at&t's 60 million internet

customers.

* Desgined/Implemented a national network timing solution for 100 million

IPTV customers

* Doubled performance on legacy Sun V210 based resolver hardware.

Tripled performance on Sun T2000 hardware with BIND9 with complier

optimization

* Served as Subject Matter Expert for the Solaris Operating Environment

(v10 mostly), Domain Name System and Network Time Protocol.

* Designed/Implemented Anycast for recursive DNS on the national network,

eliminating outages and increasing scale-ability 100 fold

* Pushed for and won Veritas Netbackup scheduled backups of the

authoritative name servers planned and tuned backups of the authoritative

national name servers

* Authored Methods and Procedures documentation for the front line

operations team.

* Provided Tier-III level support for operations team.

Solaris UNIX, DNS (BIND), F5 Load Balancing, Anycast (via OSPF), SunOne Web

Server, SunOne Application Server,

Senior Systems Manager

October 2001 - July 2004

SBC Communications (Internet Data Centers) Dallas, TX and Irvine, Ca

Provided expertise in all fields surrounding the Internet and core business

as required.

* Designed and implemented a variety of solutions that required

availability or were considered business critical.

* Deployed Jumpstart/Kickstart for Solaris and Linux hosts for

Infrastructure and customer use.

* Designed and provided ongoing administration for five high-profile

customer scale-able/clustered solutions

(web services, oracle database, ticketing, and reservations,

ordering/shipping) Solaris/Veritas * Clusters with Veritas netbackup,

Veritas Volume Manager, and Veritas File System

Installation and maintenance of customer direct-attached storage arrays

(Sun StorEdge, Hitachi)

* Administered customer hosted solutions on Solaris, HP-UX, AIX and Linux,

as required.

* Selected to manage Infrastructure firewalls (Checkpoint/Nokia/Netscreen).

* Improved firewall rules for transport efficiency and throughput

* Assisted with all network/system security audits, events and resolution.

* Designed and implemented two Storage Area Networks

* Created over fifty scripts that automated most of the tedious daily

system/network administration tasks.

* Served as Subject Matter Expert on Solaris based systems, Internet

services (web, mail, UseNet, ftp, streaming media servers) and performance

tuning on system/network components.

* Managed a team of four junior level System Administrators, three in

Dallas, one in Irvine California, which included hiring/firing and

interviewing candidates for employment.

* Achieved five nines (99.999) availability for the data center

infrastructure.

Introduced a level of automation (scripts) that all but dissolved the

entire team.

* Configured a VPN session between two Checkpoint firewalls to bridge the

management and services networks (RFC2317 space)

BIND, NTP, Solaris, Hardware Clocks, Apache 2.0, Checkpoint Firewall,

Senior System Administrator

June 2000 - October 2001

SBC Communications (SBC Services) Plano, TX

* Created custom Jumpstart/Kickstart application to further automate

deployment of Solaris and Linux

* Designed a highly available Solaris shared web hosting architecture.

* Was selected to upgrade high-profile customer from Microsoft Exchange, to

Solaris sendmail environment

* Designed a scale-able metro area network for two high-profile customers

(school district)

* Deployed multiple hosted applications (Messaging, Media Streaming,

Database,

Conferencing).

* Automated compile/packaging source (mostly freeware) for use on

Solaris/Linux hosting systems.

* Worked as a system administrator resource within the Billing & Payroll

Database Operations group (mostly Oracle 9 DB on Solaris/SPARC)

* Supported initial customer base with any system issues (software &

hardware).

* Deployed Solaris 8 for use in company applications (co-developed a

Solaris standard

operating environment for SBC.)

* Chosen to help design two 100,000sq ft data centers for SBC

Communications

My work on wiring, infrastructure and operational planning is still used

today.

Apache, Apache 2.0, Perl, Korn Shell Scripting, Solaris, SunOne Webserver,

System Administrator

May 1999 - May 2000

Southwestern Bell Internet Services Plano, TX

* Administered multiple Sun Enterprise class servers used for NNTP.

* Designed a scale-able, fault tolerant Usenet architecture supporting 1.2

Million

customers, including 500,000 DSL customers.

* Supported other subsidiaries with Solaris system administration tasks.

* Isolated system performance problems and took steps to resolve them.

* Provided other departments with general Solaris support including multi-

headed

Sun/SGI workstations, Jumpstart/RoboInstaller, system backups, performance

tuning and cluster configuration/administration (VERITAS Cluster Server).

Solaris, Highwinds Software Typhoon, Highwinds Software Cyclone, INN (Inter

Net News), Apache, Netscape SuiteSpot Webserver,

Network Administrator

July 1997 - August 1998

Web America Networks Dallas, TX

* Installed Windows on Dell hardware for online registration, radius

authentication and database applications.

* Installed and administered Solaris 2.5/2.5.1/2.6 on Ultra Enterprise

hardware for serving HTTP, SMTP, DNS, NNTP and NFS.

* Administered Linux for serving NNTP (using INN), DNS and SMTP.

* Configured and administered Cisco routers.

* Installed/configured 3COM Total Control access servers.

Solaris, Windows NT 4, MS SQL Server, Linux, Netscape SuiteSpot Webserver,

Netscape SuiteSpot Mailserver, Apache, Linux,

Consultant

August 1998 - April 1998

New Data Strategies Addison, TX

Telecommunications Services

* Administration of multiple Sun Enterprise class servers used for NNTP

content

* Shell programming (ksh, perl) to parse through logs and generate reports.

* Automation of daily NNTP administration tasks using shell scripts

* Provide support for Network Operations Center via on-call pager

* Used MRTG/RRDTool to report various statistics vital to a Usenet

Infrastructure

* Compiled/Packaged Open-Source software to suppliment base OS

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EDUCATION

High School or equivalent,

0 - May 1997

Lake Highlands High School Dallas, TX

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HONORS & AWARDS

Nominated by a customer for an excellence award on April 22, 2010.

the customer states, "I nominated Steve for APEX to recognize his

dedication, and going above and beyond the call of duty.

The details that I would like him to be recognized for are his ability in

picking up our environment, his dialog with my team, and his willingness to

do whatever it takes to solve an issue? Even if that means multiple

conference calls, and late weekends. I understand that engineers have

multiple accounts, however, Steve has made us feel special and he always

treats us with the white glove."

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