UNIX/LINUX Admin/Engineer

David M. Stanek

Native US Citizen

**** ***** ******

Brooksville, FL 34604

813-***-**** (Mobile)

*****.********@*****.***

SUMMARY

With a total of 18 years of IT experience in collaboratively *NIX Administration, Production Applications Support, and JAVA/SQL Development, I am a highly versatile technologies professional with a skilled background and a propensity for learning new platforms. While development has been my most recent background, I’m looking to get back into a role with weight in Administration, Engineering, and Operations as a focus. I specialize in High-Availability and Disaster Recovery operations using both app/DB redundancy and network failover. In addition to JAVA /SQL Development, I am skilled in shell, perl, and groovy scripting for automation monitoring and correction. My experience lends itself to a LINUX DEV/OPS or UNIX/LINUX Admin and/or Critical Applications Support role.

PROFESSIONAL EXPERIENCE

Chase Commerce Solutions (formerly Paymentech) 03/11-05/16

Gateway Applications Development/Application Infrastructure Specialist

Applications Developer

Tampa, FL

Applications developer working on both the creation of new and the enhancement/remediation of existing JAVA apps.

Primary Tier 3 Support contact for HPUX 11.31 and Red Hat Enterprise Linux 6.x applications.

Acted as Infrastructure liason to DEV team.

Used Admin experience to work with UNIX/LINUX Admins for filesystem allocation for apps, EMC/Brocade SAN LUN configuration, DAS, NAS, and NFS design.

Given Admin access to the F5 LTMs by the Network Engineers to coordinate creation and support of nodes, VIPs, pools, members, and ECVs for application stability, failover, and load balancing.

Aided with kernel param setups for applications using kctune/sysctl and associated config files.

Collaborated with Admins in utilizing swinstall/config and RPM for required additional software installs.

Worked heavily with Networking and Internet Protocols.

TCP/IP, SSL/SSH (FTPS/SFTP), HTTP/HTTPS, DNS, DHCP, SMTP, SNMP, and NTP.

Set up PAM and LDAP server and client configurations.

Administered local WebLogic instances for war file development/deployment.

Assisted with RHEL Apache configuration for proprietorially built modules.

Worked with Network Operations team setting up HP OpenView server and application monitoring.

Utilized Maven for standardized deploys and dependecy management of

standalone and web based JAVA builds.

Worked with peers to transition from a “Waterfall” development SDLC to Agile/Scrum driven with Jenkins/Maven deployment and

JIRA/Confluence focusing on Test Driven Development in a GitHub/Stash code repository.

Architected angularJS front end connecting to RESTful backend services for

web based platforms utilizing ClearTrust authentication.

Worked with JDBC/ODBC and myBatis/iBatis APIs for DB connectivity.

Implemented advanced Oracle relational DB solutions including stored procs, procedures, (m)views, triggers, etc.

Used numerous vendor provided APIs particularly regarding point of

sale terminal programming.

Worked on developing new uptime strategies utilizing the F5 LTMs, TUXEDO, and Karaf.

Wrote numerous scripts utilizing ksh, perl, and groovy for job scheduling via Control M automation utility providing application monitoring.

Troubleshot and maintained XML, SOAP, JSON, and proprietary (UTF/ISO/etc) payment authorization payload consumption and implementation.

Chase Paymentech 09/09-03/11

Gateway Advanced Technical Support

Senior Application Systems Engineer

Tampa, FL

Lead the creation of tier 2 application support team for an Internet facing card processing platform consisting of two primary applications averaging 300 TPS with zero downtime expectations.

Established Support policies and procedures for a 24/7/365 level 2 Support

team.

Administered primary C/C++ applications running in TUXEDO and secondary standalone JAVA apps running in Karaf OSGIs.

Oracle DB data mining to assist with merchant relayed issues.

Reviewed C and JAVA logs to discover application behaviorial incidents.

Troubleshot networking issues regarding both merchant and application

connectivity issues.

Wrote F5 LTM bigpipe and tmsh scripts for application network manual failover.

Developed a Support application for regularly occuring DB manipulation

tasks and allowing manual movement of the primary applications from site to site.

Troubleshot authentication issues with both ClearTrust and a proprietary DB/LDAP solution.

Worked with DTDs/XSDs/XSLT, and WSDLs to support processing payloads.

Supported SFTP interactive and non-interactive (RSA keyed) Batch file delivery with XML, CSV, and proprietary payloads.

Performed administration of job scheduling utilizing Control M.

Gerdau AmeriSteel 02/09-09/09

IT - Infrastructure Architecture Team

Senior UNIX/LINUX Systems Administrator

Tampa, FL

Primary UX support point of contact for daily support tasks. Acted as Team Lead for UX Sys Admin responsibilities on a 7 person team consisting of 4 Oracle/SQL DBAs and 3 UX Admins. Primarily tasked with combining multiple independent UX teams accumulated via rapid merger/acquisition into a unified environment. Documented Sys Admin standards to be applied to the emerging environment wherever feasible.

Heterogeneous server hardware environment:

4 x AIX 4.3.3 and 5.3 servers

25 x LINUX servers with RHEL 3.x, 4.x, 5.x, and SUSE 9 and 10

5 x SUN Solaris 10 servers

17 x HPUX 11.0, 11.11, 11.23, and 11.31 servers

Converged multiple storage solutions into a uniform SAN using EMC CX700/CX380 arrays with a common NaviSphere mgmt end-point. Installed/configured EMC PowerPath on relevant systems for throughput and redundancy.

Fully analyzed and documented a complete outline for securing all servers/OS's to meet and exceed SOX audit compliance (doc available on request).

Managed overdue OS upgrades and patching of all servers.

Offered knowledge transfer on UNIX, SAN, and security industry "best practices" to relevant parties.

Designed and maintained shell scripts to automate tasks, provide monitoring, and allow end user convenience.

Provided expertise in the architecting of an ongoing infrastructure redesign introducing HP Itanium "Blade" servers. Installed and configured said solution.

Maintained backups utilizing HP's Data Protector backup solution.

City of Lakeland 05/08-01/09

Dept of IT

UNIX/LINUX Senior Systems Administrator

Lakeland, FL

Sole senior administrator of HPUX and RedHat production systems for backend application processing for the City of Lakeland. Responsible for daily maintenance, migration, and upgrades/patching.

Systems utilize HPUX 11.0 through 11.23 on Integrity chipsets and RedHat LINUX ES 4.6 on Proliant DL360's.

SAN backbone comprising of EMC CX500 and CX3-20f arrays in multiple locations.

Supported multiple Oracle databases and applications (ie. Oracle Financials).

Install and maintained Peoplesoft using the Weblogic front end.

Maintained backups via ARCServe Brighstore.

J.P. Morgan Chase 11/07-05/08

UNIX/Network Security

Connectivity Infrastructure Specialist

Tampa, FL

Senior member of a twelve person team of specialists of varying skill sets responsible for designing and implementing an internet based "host to host" file transmission architecture to replace an existing dial up solution.

Installed and administered several Solaris 10 front end servers utilizing Tumbleweed for SSH and SSL encrypted communication and Authora Edge PGP for data encryption.

Assisted numerous customers in establishing connection and troubleshot where required.

Worked with the mainframe team to establish NDM Secure Plus connection with the UNIX servers for batch processing and further hand off of ACH files to the Tandem Non-Stop servers.

Point of contact for internal end users connecting to the UNIX servers via Cygwin/SSH on their Windows PCs.

CitiStreet

A division of Citigroup 05/06-11/06

Senior UNIX Security Administrator

Jacksonville, Florida

Senior member of a six person Security team responsible for maintaining approximately 300 servers. Performed both local and remote security administration for the Jacksonville and Boston datacenters.

Designed secure file transfer servers utilizing FTPS, SFTP, HTTPS, and SCP for client file transfer to the intranet via the internet.

Build and developed PGP encryption/decryption DMZ transfer servers for the above architecture ensuring no file left or entered the DMZ for transfer without being properly encrypted. Utilized Edge PGP solution allowing for self-decrypting archives.

Implemented redundant centralized root SSH/SCP login servers utilizing Powerbroker logging for audit compliance. RSA/DSA authentication keys from the login servers created and dispersed to all servers requiring access.

Developed and documented the end user SSH 128 bit RSA key creation and transfer topology allowing secure file transfer between servers without password knowledge or stored password files.

Worked with NDM/CONNECT:Direct for internal file transfer from the DMZ servers to the customers remaining on mainframe batch processing.

CitiStreet

A division of Citigroup 06/04-05/06

Senior UNIX Systems Administrator

Jacksonville, Florida

Senior member of an eight person UNIX team responsible for maintaining

approximately 300 servers. Performed both local and remote administration for the Jacksonville and Boston datacenters.

Worked with HPUX, RedHat LINUX, Solaris and AIX UNIX flavors with my expertise in each listed respectively. Administration included all conceivable duties.

OS patching.

Hardware and software troubleshooting and repairs.

Build, install and load new servers as required.

Participated in 24/7 on call rotation required to maintain systems high availability.

Designed and implemented new hardware schemas as upcoming application needs required.

Weblogic/Solaris migration to JBoss/RedHat LINUX.

Fault tolerant implementation of customer accessible external segment/DMZ FTP and SCP solution.

Wrote numerous Korn /Bourne shell scripts required to adapt new implementations with prior designs which were beyond remediation.

Regularly crafted BASH shell scripts for application automation and to provide end user "ease of use" for an unfamiliar UNIX OS.

Implemented new security requirements as determined via bi annual audits.

Relocated data storage from EMC arrays to HP XP512's.

Redesigned storage necessities while migrating to HP EVAs from XP512s, MA8000s, and numerous SUN and IBM solutions.

Developed/Designed and assisted in implementing High Availability redundant EVA storage SANs with local and metro server failovers.

Work on conversion from Legato to Veritas NetBackup backup solution.

In addition to normal UNIX Administration duties, as a senior member I was required to participate in teaching the junior members whenever possible. Additionally I was on the ‘Design and Implementation' and ‘Security' committees which incorporated members from all teams (i.e. Apps, Networking, NT, etc.).

Hewlett Packard 06/00-06/04

Account Customer Engineer/Storage Focal Specialist

Team Lead

Jacksonville, Florida

Responsible for all aspects of hardware troubleshooting on all HP 9000 series servers and workstations at numerous customer sites throughout the Jacksonville

area. High Availability and Mission Critical certified in hardware and UNIX system administration (external). Trained on all HP9000 servers, workstations, and their peripherals. Account management duties on all of the 7 Critical Systems/Business Continuity Support accounts in JAX. Storage focal specialist for NE Florida.

1Responsible for getting up to date information directly from WSEC and dispersing the information to the field as deemed prudent.

2One of few engineers in the SE territory certified in XP storage array microcode update procedures.

3Final field escalation on storage related issues in my entity before escalation to WSEC.

4Responsible for proactive maintenance on all storage products in my entity.

5Brocade switch/SAN and Advanced storage array solutions trained.

Team Lead for other engineers in Jacksonville entity. Unique software background as a Sys Admin and HA specialist has provided me innumerable opportunities to resolve issues initially appearing to be hardware in nature resulting in broad and general initial software training for my co-workers and documented increases in customer satisfaction and loyalty.

Hewlett Packard (via IntelliMark contract) 03/00-06/00

Openview Implementation/System Administration

IBasis Account Support Team

Boston, Massachusetts

Implemented "Unified Communications" technologies with a new customer for HP utilizing VoIP and Enhanced Digital Voice to Text. Design included HP and SUN/Solaris systems and Openview/ITO monitoring tools development.

Openview/NNM and ITA implementation begun at the time of my leaving. HP "backend" servers all configured in HA MC/ServiceGuard environments. Was one of four Senior level System Administrators managing a team of approximately 14 junior level operators. Worked closely with HP and application/database(Oracle) developers to design an HA environment monitored and controlled by ITO/ITA for a customer expanding into a new "Unified communications" technology. Wrote ksh/sh scripts for startup and shutdown automation.

Hewlett Packard (via IntelliMark contract) 02/99-03/00

Senior UNIX Systems Engineer/Administrator

Wal-Mart Global Account Support Team

Bentonville, Arkansas

One of three senior systems engineers for HP's global Wal-Mart account. At senior level, responsible for:

Project rollout development/implementation to maintain integrity in thousands of UNIX servers.

"Last line of defense" in system troubleshooting before escalation.

Worked with Wal-Mart team in developing scripts to allow new technology to interact with existing infrastructure.

Advanced HP9000 troubleshooting in both hardware and software

Support engineering lead on "DC Virtual Team" making me personably responsible for all support related issues in all Wal-Mart Distribution Centers globally (all in HA-MC/SG environments).

5) Constantly maintained relations between HP and Wal-Mart. Worked with RASEs to apply/maintain patch levels. Troubleshoot OS/app related issues to completion. Troubleshoot/dispatch hardware related issues to resolution. Maintain overall customer satisfaction.

Computer Consultant 03/98-02/99

Bentonville, Arkansas

Took numerous short term computer consulting engagements for small to medium sized businesses in Northwest Arkansas (including the University of Arkansas).

Performed several Windows, UNIX, and Network implementations.

Initiated several system upgrades/patches on Windows and UNIX servers.

Wrote Korn/Bourne shell scripts for ease of end user use of the UNIX OS.

Assisted in the addition of new system hardware (ie. Printers, PCs, etc.).

EDUCATION

CW Baker High School - Graduated with the highest level of Regents Diploma, Presidential Academic and Athletic Achievement, New Visions Justice Systems Diploma, Outstanding Language Aptitude Honors with Distinction, Regents Biology Science Aptitude with Distinction, numerous National Science Olympiad awards in Earth Sciences, Physics, and Chemistry.

SKILL SETS

MCSA 2003, MCSA Messaging, and CMNA Certified.

Experienced in HP-UX 9.04, 10.20, and 11.x

- Completed "HPUX Sys Admin & Network Mgmt for Exp Users" (H5875)

Extensively familiar/experienced in Logical Volume Manager and it's application in the HA environment

- Completed "Hands-On with LVM and MirrorDisk-UX" (H6285)

Extensively familiar/experienced in MC/ServiceGuard and it's critical relation to HA environments

- Completed "Author Series Hands-On with MC/SG" (H6487) taught by HP Labs

HP internally "High Availability" and "Mission Critical" certified

HP internally certified on ALL HPUX enterprise servers/storage including XPs and Superdomes

Extensively familiar with HP diagnostic utilities

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