Vasilios' Profile

SUMMARY:

A Systems Administrator/Architect for over 10 years. Extensive experience in RS6000/SP, Solaris, Windows 2003 Server, and UNIX/LINUX performance tuning, problem determination, capacity planning, and system monitoring as a project manager and as a team member.

• 02/06 - Present, Co-Owner/Lead Computer Engineer, NHVT Computer Services, Corp., Lebanon, NH 03766
  Working with customers to identify needs and resolve computer problems/issues, computer repair, build custom computers.
  Worked with major distributors to become an official reseller of computer products.
  Capacity planning at customer's location and preparing proposals for potential customers.
  Management, marketing, financial, and administrative tasks related to the company.

• 11/04 - Present, Owner, Rentals By Owners, LLC, Lebanon, NH 03766
  Established a web site company that rental property owners/managers advertise their property to potential renters who view properties.
  Management, marketing, financial, administrative tasks related to the company.

• 12/02 - 02/06, Operations Analyst, Microsoft Corporation, Lebanon, NH 03766
  Supported a large number of servers running different types of OS and applications.
  Managed data storage & data center relocations.
  Managed and implemented a global load balance service (GLBS) to allow traffic to be directed to multiple data centers.
  Managed disaster recover.
  Capacity planning, system monitoring, performance tuning, upgrades, installation, and documentation.
  Providing technical support for a variety of systems and assisted customer service team.
  Implemented and maintained production and development backups.

• 01/01 - 12/02, Sr. System Administrator, Vicinity Corporation, Lebanon, NH 03766
  Supported a large number of servers running different types of OS and applications.
  Coordinated and managed major initiatives (Data Storage, Load Balancing, Operating System Evaluation).
  Evaluated proposals for Backup solutions. Managed and Implamented the selected solution.
  Review proposal and make recommendations on hardware and software to be purchased.
  Capacity planning, system monitoring, performance tuning, upgrades, installation, and documentation.
  Providing technical support for a variety of systems and assisted customer service team.
  Developed and conducted training courses for related to UNIX and computer environment.
  

• 02/00 - Present, President/Founder, GlobeInt.com, Inc., Lebanon, NH 03766
  Established a Web Design and Hosting Company.
  Design, Host and Develop web pages for clients including Database, Dynamic Content, E-Commerce, and Build Self Maintain Interfaces.
  Work with and assist customers with web sites and other computer questions.
  Management, marketing, financial, administrative tasks related to the company.
  Currently, Company has approximately 75 customers.

• 01/97 - 12/00, Sr. Systems Architect, ShopKo Store Inc., Green Bay, WI 54307-9060
  A system administrator on RS6000/SP servers.
  Capacity planning, system monitoring, performance tuning, upgrades, installation, and documentation.
  Assisted the help desk and operators staff with system problems.
  Worked with vendors of the company to test and purchase new equipment.
  Technical Lead on designing and migrating the Data Warehouse application to new system which resulted in 78% improvement on performance.
  Developed and conducted training courses for related to AIX, SP2, UNIX, and computer environment.
  Coordinated and implemented the:
  Migration on RS6000/SP S7A to S80 server, Implementation of People Soft HR software, Migration from Oracle 7.3.4 to 8i version on all databases, Implementation of Manugistics Software, The Y2K certification on the RS6000/SP complexes, Software to collect accounting and utilization information of RS6000/SP systems, Training material for AIX and SP given to other associates, I/O comparison over different types of Networks (Fiber, SP2 Switch, Ethernet).

• 06/94 - 12/96, Graduate Research Assistant, Maui Project/Albuquerque High Performance Computing Center (AHPCC), University of New Mexico (UNM), Albuquerque, NM 87131
  Developed accounting software for the RS6000/SP system.
  Developed software to monitor the utilization of RS6000/SP systems.
  Monitored the utilization of a number of RS6000/SP systems.
  Worked as a system administrator on AIX Operating System (OS).
  Evaluated a number of RS6000/SP systems and software.
  

COMPUTER SKILLS:

• Operating Systems: UNIX, AIX, Solaris, X-Windows, Windows (3.x, 95, 98, NT, 2000, XP, 2003 server), Linux (Red Hat and Debian), DOS, Macintosh
• Database: Oracle, Microsoft SQL
• Languages: Perl, KSH scripting, HTML, CGI, MySQL, C, C++, Fortran 77 and 90, Pascal, Assembly for MC68000, Virtual Basic .Net, Virtual C#, Basic, Prolog, LISP
• Software: ADSM, Veritas Netbackup, VSD, Abinitio, Showcase, Tgif, Khoros, Kermit, Microsoft Office (PCs and MACs), WordPerfect, Lotus 123, dbase IV, Harvard Graphics, Omnipage, Matlab, Mathcad
• Parallel Libraries: MPI, MPL, MPICH, PVM, XPVM, LAM, P4, NC, C*, Split-C, pC++, Sage, VT
• Parallel Machines: RS6000/SP, SP2, SP1, Ncube, CM-2, Intel Paragon

• Master of Science in Electrical Engineering [Concentration: Computer Engineering], December 1996
  University of New Mexico (UNM), Albuquerque, NM 87131
• Scientific and Engineering Computation (SEC) Certificate Program, December 1996
  University of New Mexico (UNM), Albuquerque, NM 87131
• Bachelor of Science in Computer Engineering, December 1993
  University of New Mexico (UNM), Albuquerque, NM 87131
• Associate Degree in Supervisory Management, January 1999 - 2000, Not completed due to relocation to NH.
  Northeast Wisconsin Technical College (NWTC), Green Bay, WI 54304
• Microsoft Classes, February 2002 - March 2006
  
• Course Development Certificate, February 1999 and Facilitation Skills Certificate, March 1999
  ShopKo University, Green Bay, WI 54307

PUBLICATIONS:

• Vicinity - Internal Report, Database Performance Results, Author: Vasilios Georgitsis, March 2002.
• Vicinity - Internal Report, Comparison of RedHat vs. Debian Linux OS, Author: Vasilios Georgitsis, May 2001.
• Vicinity - Internal Report, Justification and Plan for backup solution, Author: Vasilios Georgitsis, April 2000.
• ShopKo - Internal Report, EMC S/NFS Performance Testing, Author: Vasilios Georgitsis, September 1997.
• ShopKo - Internal Report, NFS Performance within ShopKo's SP System, Authors: Vasilios Georgitsis and Craig Huss, May 1997.
• Scalable Parallel Libraries Conference III, Message Passing Performance on SP Systems, Authors: Vasilios Georgitsis and Dr. John S. Sobolewski, October 1996.
• MPI Developers Conference 1995, Performance of MPL and MPICH on SP2 System, Authors: Vasilios Georgitsis and Dr. John S. Sobolewski, June 1995.

• Production Operation Training, Vicinity Corporation, monthly from March 2001 to August 2002.
• Merchandise Data Warehouse - Lessons Learned, ShopKo Stores Inc., March 1999.
• IS On-Boarding Presentation - UNIX and SP, ShopKo Stores Inc., monthly from February 1999 to January 2001.
• Introduction to LoadLeveler, ShopKo Stores Inc., March 1998.
• LoadLeveler and Problem Determination, ShopKo Stores Inc., December 1997.
• Introduction to the RS/6000 SP, ShopKo Stores Inc., September 1997.
• Introduction to the SP, ShopKo Stores Inc., September 1997.
• Introduction to SP1, AHPCC, October 1995 and 1996.
• Message Passing Interface (MPI) and Parallel Virtual Machine (PVM), University of New Mexico, Class CS 591, Fall 1994 and 1995, DR. Brain Smith from Computer Science Department.
• Advanced SP1 and Queuing, AHPCC, October 1995.
• Introduction to Parallel Fast Fourier Transforms, AHPCC, February 1995.
• Data Parallel C (Split-C), Albuquerque Resource Center, February 1995.
• Survey of Object Oriented Parallel Programming, AHPCC, November 1994.

• SP WORLD 98 and 99, (Toronto, August 8-12, 1998 and Orlando, May 15-18, 1999).
• Supercomputing 97, San Jose, CA, November 15-21, 1997.
• Wisconsin SP Users Group Meeting, Milwaukee, WI, June 18th, 1997.
• SUPER 97, Austin, TX, April 27-30, 1997.
• Scalable Parallel Libraries Conference III, Starkville MS, October 24-25, 1996.
• Ideas in Science & Electronics Conference, Albuquerque NM, May 14-16, 1996.
• SUPER 96, Ames Iowa, April 21-24, 1996.
• Computational Science Workshop, Albuquerque NM, July 24-28, 1995.
• MPI Developers Conference, Notre Dame IN, June 22-23, 1995.