Expert Unix and Windows systems administrator with twenty years experience delivering enterprise-level solutions in highly complex environments: higher-education, automotive, finance, military, and technology start-ups.
Organized and resourceful technical leadership coupled with a strong customer focus. Proven ability to deliver well-designed and well-documented solutions on time and within budget.
Managing 5000+ Linux servers, both virtual and physical, on the Cisco UCS platform. Linux lead on the security incident response team. Leading the migration of multiple projects to AWS public cloud. Created training program to help IT staff acquire AWS certification. Spearheaded the project to convert monitoring and alerting to OpsView and PagerDuty. Improved overall security posture by implementing two factor authentication across the Linux environment with Duo Security.
Operational responsibility for mixed network of Windows 2003/2008 and RHEL Linux servers for healthcare division ensuring SLAs are met or exceeded. Perform regular server audits of all systems to ensure HIPAA compliance. Off hours support for deployment of new releases and rotating on-call responsibilities.
Systems administration and operational responsibility for the UM
Online Directory, Mail Routing and Delivery for the umich.edu domain,
and the University-wide IMAP/POP service. Maintain legacy AIX
server environment. Spearheaded effort to upgrade Oracle
Peoplesoft servers to latest version of AIX.
Computing infrastructure design and
capacity planning for multiple
classified government projects. UNIX server
administration for Solaris, RHEL, and AIX. Support of classified
environment, security procedures, system hardening and auditing.
Information storage design and support for SAN, NAS and DAS from SUN,
EMC and Nexsan with ZFS, EXT3, and XFS file-systems. Earned Top
Secret Sensitive Compartmented Information Clearance (TS/SCI) with
polygraph.
Responsible for the design, implementation, and maintenance of all
IT systems. Converted server infrastructure from physical
hardware to VMware virtual machines. Transferred primary operations to
new data-center improving overall uptime and SLA delivery. Developed
Amazon EC2 cloud computing solution for on-demand computing projects.
Maintained Oncomine web application running Apache Tomcat with MySQL
database back end.
Installed, configure and maintain AIX 5.3L LPARs on IBM p5 series hardware for the Oracle DBA team. Developed, tested, and documented an automated Oracle 10g application server installation procedure. Analyzed performance issues using Tivoli performance viewer and Tivoli event console. Provided technical direction and mentoring to the level 2 Unix team in Chennai, India. Supported IBM WebSphere 6.x J2EE application servers.
Installed, monitored, configured, and maintained Sun/Solaris and Linux server environment for the entire University of Michigan library/Google Book search project. Evaluated, recommended for purchase, and installed all SAN/NAS storage. Worked with Google Inc. to digitize every volume in the entire University of Michigan library collection. Total storage projected to be at least five hundred terabytes. Increased overall security using host-based firewalls (iptables, ipchains, and sunscreen), SSH, and SSL. Installed, configured, and maintained web server infrastructure for entire library, serving tens of thousands of users daily.
Installed, monitored, configured, and maintained Sun/Solaris and Linux environment (including Ultra 4500, 450, 250, 60, A5000, and A1000 disk arrays) for production network located in Global Crossing data center. Worked as project manager for multiple financial trading systems, reporting to the Director of Operations. Responsible for all capacity planning of Sun infrastructure in a 24/7 setting. Spearheaded all security matters including firewall setup and configurations. Installed, configured, and monitored Legato Networker 5.5 power edition for comprehensive backups of all corporate and production data (including Sybase databases).
Consultant Lawrence Berkeley National Labs:
Maintained 75 Sun UltraSPARC servers and workstations for Human Genome
Project. Installed and configured Network Appliance 630 filers with 1.2
terabytes of data and ensured its safety with regular backups.
Automated Solaris operating system installation process by implementing
a Jumpstart server. Lead architect of intranet site. Converted
existing Word/PDF format documentation to HTML.
Consultant Federal Bureau of Investigation:
Monitored 4 SGI Origin 2000 servers and associated RAID disk arrays for
FBI Interstate Identification Index (I.I.I.) and the Brady Bill
mandated National Instant Check System (N.I.C.S.) projects. Wrote
I.T. security plan/policy documentation and assisted with enforcement
of I.T. Security policy and procedures.
Supported T1 connection to network of 55 Windows NT and 40 Sun Ultra machines. Administered FTP sites, e-mail, and Web servers, managed on- and off-site backups. Provided pre-sales support and professional technical services to sales team. Improved company positioning at trade shows through quality support of marketing team.
Maintained T1 connection to network of 8 SGI servers and 35
Macintosh computers. Managed FTP site, e-mail, and Web servers;
maintained complete backup of all data. Led smooth network upgrade to
100baseT switched Ethernet.
Provided technical support and training to university faculty and staff. Played key role in constructing new Unix laboratory for Information Technology Division. Headed project to standardize all ITD networks on Ethernet.
Denied the enemy use of the electromagnetic spectrum. Instructed staff in use of computers and classified cryptography equipment. Managed intelligence team under garrison and field conditions. Analyzed large quantities of intelligence data. Upheld rigorous quality control by performing regular detail-oriented inspections. Earned Top Secret Sensitive Compartmented Information clearance (TS/SCI).
Alexander J. Marsh \\ ajmarsh@ajmarsh.com \\ (734) - 395 - 9103