Janusz Kujawa

- administration AIX and Linux;
- manage, fix, reconfigure IBM tool's client such as: ITM, SRM, TSM, TLM;
- increase performance Linux;
- fix security issue;
- install APAR - upgrade OS (Linux RedHat and AIX);
- manage LPAR, DLPAR;
- manage, troubleshooting and install RHCS (Redhat Cluster Suit);
- manage and troubleshooting RAC (Real Application Cluster);
- supporting infrastructure platforms for Tivoli monitoring such as RTEMS, TEMHUB etc.

- administration, upgrading, licensing RHEL,Vmware ESX, ESXi servers;
- care about correct network backup servers;
- instalation and configuration new RHEL, Vmware ESX ESXi;
- new implement, administration and expand existing Red Hat Cluster Suit based on RHEL systems;
- reconfigure and improve existing services on RHEL servers such as: DNS, SQL, HTTP, SSH, SFTP;
- increase security level Linux services;
- administration web and application servers such as Tomcat and Apache;
- administration database server: MySQL, PostgreSQL;
- clustering PostgreSQL, MySQL, Tomcat etc.
- creating work enviroment for group such as: programmer, business department, application administrators etc.
- documentat all take part projects IT;

To attend project such as:
- build secure chrooted enviroment services RHEL for restrict applications access;
- implement central log server with mail alert function;
- build snmp monitor trends server based on Cacti;
- implement real timie monitor for critical services, project based on nagios, centreon, nagvis etc;
- clustering Vmware ESX HA configuration and manage. Projects for special group servers.
- implementing active-pasive HA solution for services like: tomcat, apache for special web services such as portals;
- implementing active-active HA solution for services like: tomcat, apache for special web services such as portals;
- optimization, benchmarking servers: Apache, Nginx, MySQL, PostgreSQL;
- building scalable http(s) servers infrastructure for network portals and web application - cache https session, cache static content loadbalancing, proxing.
- configuring and maintaining streaming replication and live backup for SQL servers: PostgreSQL, MySQL
- implementation of the system and call center components responsible for the integration of banking systems.
- reconstruction of cluster systems with the AP to the AA model. Reconfiguration of services for handling the new model cluster.
- building HA software loadbalancer cluster for critical web application services I used HAproxy and CARP stand on FreeBSD system.
- building HA web application solution - servers on nginx proxy and tomcat.
- participation in the project, banking, selection of infrastructure to provide redundancy for all components. Creating a scalable server infrastructure for client applications and the bank's internal mechanisms.
- building HA software loadbalancer cluster HAproxy and heartbeat on RHEL6.
- building HA webservices base on apache servicemix fuse esb
- create monitoring system for webservices: check valid WSDL response from ESB servers.
- building Redhat Cluster with GFS monitoring all points of system.
- configuring, manage AMQ in webapplication servers and middleware services: clustering all services.

- implementation and improvement network services: DNS, WWW, FTP, SSH, SQL, VPN;
- develop existing network infrastructure (hardware + software);
- analyse and implement network backup strategy using Amanda Software;
- to maintain the continuity of the provision of Linux network services;
- coordination network projects, contact with ISP, business partner;
- upgrade and administration RHEL systems;
- monitor existing servers and active network devices infrastructure;
- write bash, perl scripts to automate system processes;
- implement central server to monitoring network devices and services based on Groundwork Monitor;