poniedziałek, 1 czerwca 2009

PROFESSIONAL EXPERIENCE: Chief Specialist - SGB GBW S.A. [2000-2009]

Spółdzielcza Grupa Bankowa
(Cooperative Banking Group)
Gospodarczy Bank Wielkopolski S.A.
(Wielkopolski Economic Bank S.A.)

Chief Specialist in the IT Department
Administrator of IT Systems



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MANAGEMENT
Supervising the work of a 4-person team:
  • distributing tasks,
  • verifying results,
  • coordinating the process of reporting to the management,
  • managing projects within the team.
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For the first five years I worked as an Administrator of Information Technology Systems. Between 2006 and 2009 I was a Chief Specialist in the IT department.

My basic responsibilities as an administrator of IT  systems included ensuring the security and proper functioning of:
  • the AIX 5L  systems along with the HACMP cluster software working on the IBM platform (30 servers p series: Power 5 + Power 6; 20 servers x series – HMC),
  • IBM System Storage (with the use of IBM Storage Manager) in storage area networks (SAN): DS4700+EXP810; DS8100,
  • HITACHI disk matrices in storage area networks (SAN),
  • Storage Area Network (IBM 2005-B32, IBM 3534-F08) switches  and the monitoring of zoning within particular fabrics.
as well as installing, modifying, upgrading, controlling: 
  • the  SOLARIS  system (in versions: from 2.6 to 2.10) based on the SUN FIRE (V880, V125); SUN ENTERPRISE (250, 450, 3500); SUN ULTRA (1, 2, 5, 10, 60) hardware platforms along with the Sun StorEdge (A1000; 3300; A5100) disk matrices,
  • LINUX (RED HAT; FEDORA CORE; DEBIAN; SUSE etc.) and RED HAT CLUSTER (Red Hat Enterprise Linux 5 Advanced Platform) on the HP platform (100 servers DL360/DL380G5; ISCSI Storage: HP Storage Works MSA2000, HP Storage: MSA70),
  • services like DNS , DHCP, APACHE, NFS, SAMBA, FTP, TELNET, SSH, RSH, VNC, SENDMAIL, POSTFIX.
The additional responsibility within the network operating systems was monitoring the NOVELL NETWARE system (in 3.x – 5.x versions).

My main tasks ( in the area of databases) included managing and supervising:
  • ORACLE (which uses RMAN), CTREE (FAIRCOM) and MYSQL,
  • making ONLINE and OFFLINE backups of ORACLE databases,
  • “duplicating” ORACLE database instances (based on ONLINE copies),
  • „cloning” ORACLE database instances (based on OFFLINE copies),
  • optimizing and monitoring the work of ORACLE databases with the use of tools: ENTERPRISE MANAGER, QUEST CENTRAL FOR ORACLE + SPOTLIGHT, STATSPACK.
The experience that I have gained allowed me to gather knowledge necessary to quickly identify and solve/ correct current problems/ errors of ORACLE databases.
Within the framework of workshops organized by IBM POLAND/BROCADE I acquired the necessary skills and knowledge related to the configuration and control of a storage area network (SAN) (routing, zoning, ISL and trunking within particular fabrics with the use of IBM matrices and servers).
Participating in workshops („New techniques of local network protection” by ASCOMP) and tests conducted on the NetScreen hardware solutions allowed me to familiarize myself with the issues of „Intrusion Prevention”.
One of my tasks relating to the implementation of new solutions in 2006 was to carry out performance and scalability tests of hardware platforms, databases and applications. At present I am able to properly prepare the procedures (plans) of such tests as well as adequately match their type/ number so that their results could determine if the system/ database/ application fulfills specific performance/ scalability requirements.

I count the following among my greatest achievements:
  • participation in three mergers of GBW S.A. with other banks, which involved integrating systems/ data bases/ applications and technical solutions (LAN/WAN) of the acquired companies with the standards applied in Gospodarczy Bank Wielkopolski S.A.,
  • active participation in the process of selecting an Information Technology system for Spółdzielcza Grupa Bankowa (Cooperative Banking Group), for which in 2006 I received an award of the Management Board of GBW S.A.
  • participation in performance and scalability tests of banking applications based on the databases (ORACLE: 9i, 10g) that work on the IBM servers and matrixes (the AIX 5L operating system). The tests were carried out in IBM Benchmark Center (in Mountpellier, France).
The knowledge and professional experience that I have gained allow me to create and conduct analyses of projects connected with the technical architecture, LAN/WAN networks and security.

The operating system that I have been using (both privately and professionally) has been exclusively LINUX (at present FEDORA). The experience that I have gained allows me to highly assess the level of my knowledge of and practical expertise in the solutions applied in UNIX / LINUX.
One of the elements of my work as an administrator was programming in the BOURNE, KORN and C shells. Thanks to numerous trainings supported by wide professional experience I may admit that I am very much familiar with these issues. I was also responsible for the integration of UNIX, MICROSOFT WINDOWS, NOVELL networks carried out with the use of Network File System (NetWare NFS Services; Solaris NFS; SFU-Windows Services for UNIX) and SAMBA. 
In 2003 I finished CISCO NETWORKING ACADEMY, thanks to which I have the knowledge which is necessary for work with the IT infrastructure, i.e. Switches, Routers which use the TCP/IP, IPX/SPX protocols and WAN technologies (Frame Relay, ISDN, PPP).