Systems Administrator / Systems Engineer

DON SHERIDAN

*** ********** **, *** *****, CA *2109 - 858-***-****

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

PROFESSIONAL SUMMARY

Accomplished Systems Administrator with expertise designing and building systems, managing network operations, standardizing processes, and optimizing EDI processes with proven experience completing priority projects and maintaining network. Collaboration-centric with a bias for process improvement, a passion for leveraging technology as a competitive advantage, and driving technical solution design and execution. Technically solid with a focus on fault tolerant design and active redundancy to ensure balanced networks and consistent data flow. I excel at solving technological challenges in dynamic environments and delivering innovative secure solutions with excellent conflict resolution and management skills.

CERTIFICATIONS AND TECHNICAL EXPERIENCE

1. Certifications

- SY0-401 CompTIA Security+.

- LX0-103 CompTIA Linux+ Powered by Linux Professionals Institute.

- LPIC-1.

- MCP Microsoft Certified Professional.

2.Hardware

Cisco SF500-48p Stackable Managed Switch, Junipur EX3300 switch.

Untangle NG UTM Firewall running on Supermicro SuperServer.

Dell Sonicwall SRA-4200 VPN + the NetExtender client.

Microsoft Hyper-V host to our primary dc on a Dell R415 2U server.

Hot Site (DRP): - VMWare ESXi 5.5 running on a Supermicro SuperServer

X9SRE enterprise-class, type-1 hypervisor.

Supermicro (IPMI-BMC): - 5015A-EHF-D525 1U, 6027R-TRF 2U

Dell PowerEdge (iDRAC): - R415 2U, R515 2U, 410R, R920

HP ProLiant (iLo2): - DL380 G3 2U, ML310e, DL360p.

DNS, DHCP, SMB / CIFs, NFS, SNMP, ADDS, LDAP, VLANs, HSRP, LACP.

OpenVPN, IPSecVPN, SSL VPN, SSL/TLS, SSH.

WAP, WPA2 (TKIP + RC4), CSMA, CSMA/CD, CSMA/CA.

Logwatch. Certificates, MAXXESS Door Access Control (Smart Cards).

4.Platforms

Virtualization Technology - Vmware ESXi and vSphere, Microsoft Hyper-V

Oracle VirtualBox, Illumnos SmartOS.

Windows Server 2012, 2008x64, 2008x32, 2003, and 2000.

Windows 10, 8.1, 8, 7x64, 7x32, Vista, XP, 2000, 98, DOS,

Linux: (Ubuntu, CentOS, FreeBSD). Mac OS X.

Unix: FreeBSD, Oracle Solaris - zfs RAIDZ/Z2, samba / centrify express.

5.Backup

Veeam Backup and Replication, Idera SQLSafe software.

Crontab: - rsync, rdiff-backup.

PowerShell Robocopy Scripts with Windows Task Scheduler.

6.Applications

Office 365 Exchange, Active Directory (Group Policy).

PowerShell Scripting, Symantec Endpoint Protection.

Bitdefender, SharePoint Portal Server. Oracle PL/SQL.

GoTo Meeting and GoToAssist. Office 2010 / 2015, Adobe Creative Suite.

EMPLOYMENT HISTORY

IT Administrator:

March 13 – Present Align General Insurance Agency, San Diego, California.

Enhanced security and workforce mobility spanning 4 office locations, installing VPN/firewall technologies across 4 worksites, delivering a reliable redundant network, improved overall system uptime from sub-99% to 99.99% and increasing overall productivity for a medium sized company.

Upgraded infrastructure through virtualization (Hyper-V, VMWare ESXi); lowered operating costs 35% and bolstered uptime of mission-critical IMS application (.Net + SQL Server 2012), Great Plains accounting, file/print, and web systems.

Improved business continuity with the introduction of Nagios network monitoring to provide real time alerting of possible network issues, while instating a centralized backup strategy to reduce company exposure to risk (data loss and/or data corruption), by ensuring all servers run RAID arrays (1, 5, 6, 10, zfs RAIDZ/Z2) and implementing a backup schedule were data duplication occurs to dual local servers, in addition to our backup location, and data replication to our DRP hot site. Deployed backuppc system with an HTTP/CGI interface and custom PERL and csh shell scripts to parse log information.

Cultivated collaboration and efficiency, by streamlining Office communication, reducing capital expenditure, and reducing administrative burden with the introduction of cloud-based Microsoft products, Office 365 Email System (utilizing Windows PowerShell scripting).

Eliminated VoIP call quality issues (call dropping, jitter) using Vlanning and implementing vendor approved routing equipment for our FreedomVoice VoIP Phone System utilizing Polycom Soundpoint IP-550 PoE four-line SIP phones, along with the Polycom SoundStation IP 6000 conferencing phone. Implementing Apple AirPort Extreme Base Station for wifi.

Enhanced the company’s digital presence with a refactored modern website and edited content. Directly managed web server running Apache, mail server running Sendmail, name servers running DNS/Bind, database servers running MySQL. Did extensive HTML/CSS work, and have PHP experience. Using git and GitHub for version control.

Resolved 95% of Level I-IV support issues within 5 minutes, troubleshooting diverse issues ranging from remote user network connectivity, to data backup restoration, to Office 365.

Windows Administrator / Programmer:

Aug 07 – Aug 11 Financial Aid Dept., San Diego State University, San Diego, California.

Achieved 100% business continuity and increased overall department productivity and redundancy through process refinement and hardware and software upgrades. I introduced the use of secondary servers for data redundancy and implemented a data backup strategy to both hard and soft copy backups to multiple devices. I upgraded all legacy servers to Dell PowerEdge x64 running RAID1 or 5 arrays, I migrated both our Primary and Secondary domain controllers from legacy boxes running Server 2003 to new PowerEdge machines running Server 2008, I migrated all our users from legacy XP x32 machines to Windows7 x64 machines while integrating our legacy custom Rix Oracle 6i forms application to maintain consistent operations. At the same time I upgraded all our users from legacy Horde / Eudora email to Gmail / Outlook 2010 while maintaining shared mailbox functionality, while implementing a new desktop backup strategy where I mapped users MyDocuments folder to their own personal share on our file server where redundant daily backups ran. In addition I set the Outlook backup tool to backup the user’s Outlook .pst file to their personal shares where automated backup occurs.

Achieved compliance with SDSU Information Security Plan, while overseeing strategic IT planning and department-wide IT infrastructure and operations, aligning IT with CSU priorities, implementing systems alterations in accordance with Vulnerability Management and Disaster Recovery sub sections.

Secured the department network with the implementation of McAfee ePolicy Orchestrator centralized endpoint management, Sunbelt Counterspy, configuration management, secure server and client builds / imaging, patch management, active directory configuration and software licensing inventory.

Optimized and automated departmental EDI processes scripting Oracle PL/SQL jobs, reducing processing time, improving quality control and optimizing batch processing to expedite data loads for CBRS Campus Billable and Receivable System, Fee Deferment processing, Waiver Subsidy processing, and NSLDS Quality Control and Transaction Monitoring systems.

Desktop Support Technician:

Aug 04 – July 07 School of Nursing, University of San Diego, San Diego, California.

Refined the all IT processes for the School Of Nursing improving systems security and reliability, insuring data integrity, while maximizing end user satisfaction.

Improved business operations and streamlined communications with the introduction of Video Conferencing Systems, Print Pay Systems. Implementing new Active Directory domain, Print Servers, File Servers, Backup Systems, Group Policy, and Network Monitoring.

EDUCATION

1. 1999 - 2000 Post-Graduate Diploma in Information Technology.

National University of Ireland Maynooth.

2. 1995 - 1999 B.Sc. in Management. Trinity College Dublin.

3. 1995 - 1999 Advanced Diploma in Marketing Techniques. Dublin Institute of Technology.

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