Maciej Kozieł

Management and planning databases farm for microservices - Infrastructure based in AWS cloud. - Instances of Oracle, Postgres, MongoDB, Redshift on RDS and EC2. - Infrastructure as a code (Terraform). - DBs configuration management automation (Ansible). - Developing scripts for DBs monitoring. - Cost and performance optimization. Databases standardization process. Security management.

Oracle database second level support - Mentoring junior team members. - Oracle high availability – DataGuard and DBVisit solutions. - Database systems integration – GoldenGate and Oracle Transparent Gateway. - Performance tuning and capacity monitoring. » Siemens (Germany, Paderborn) - Databases migration from MSSQL to Oracle. - Databases globalization. - Upgrades of databases. - Creating PLSQL scripts for jobs automation. - Performance problems troubleshooting.

Oracle database administration. - Diagnosing and troubleshooting database problems. - Storage management – ASM and raw devices. - High availability Data Guard environment installation and management. - Database upgrades and patching. - RAC clusters management. Red Hat Linux systems administration. - Performing system installation, upgrades, patches, and configuration. - Backup and restoring process management. - Troubleshooting hardware and operating system problems. - Process automation.

- Shared Service Centre datacenter administration. Took part in international project extending scope of service from 3 to 8 countries.› Designed and deployed backup datacenter for project needs. Citrix farms administration. Active Directory administration. Windows server family systems administration. - Intranet server administration (IIS 6.0,7.0). Applications management, integration and troubleshooting. Intranet database management (MsSQL). Backups management.