György Kósa
Senior System Engineer
Győr
Summary
Results-oriented Database Administrator with 19 years of comprehensive experience managing MSSQL\Oracle\Postgre SQL databases. I have experience with application support (Oracle E-Business, Data Warehouse (Hive, Spark, Hadoop)). Strengths in troubleshooting and maintaining servers and systems to support smooth business operations. I have several years of experience in the professional coordination of projects.
Overview
19
19
years of professional experience
3
3
years of post-secondary education
1
1
Language
Work History
Team Leader\Senior Engineer
T-Systems Hungary Ltd\Hungarian Telecom
04.2022 - Current
- Evaluated team member performance against established objectives during regular reviews, offering praise for achievements or identifying areas requiring further development.
- Increased customer satisfaction ratings by closely monitoring service quality standards and addressing any issues promptly.
- Managed conflict resolution among team members, fostering a positive and collaborative work environment.
- Empowered team members by delegating responsibilities according to individual strengths and areas of expertise.
- Collaborated with other department leaders to establish shared goals and ensure alignment across teams.
- Optimized resource allocation to maximize overall team output while minimizing costs.
- Assisted in recruitment to build team of top performers.
- Led a team of engineers to successfully complete complex projects within budget and schedule constraints.
- Optimized system performance by implementing innovative engineering solutions and continuous improvement initiatives.
Senior Database Administrator
T-Systems Hungary Ltd.
1 2012 - 04.2022
- Set up and controlled user profiles and access levels for each database segment to protect important data.
- Created and implemented database designs and data models.
- Administered, supported and monitored databases by proactively resolving database issues and maintaining servers.
- Installed, upgraded, configured and tuned database systems and all associated LINUX and Windows environments.
- Managed systems and infrastructures by defining hardware requirements and planning storage capacity for databases.
- Produced high-standard database solutions to meet stability, reliability and performance metrics.
- Eliminated downtime by accurately implementing databases.
- Wrote and maintained technical and functional specifications to document database intentions and requirements.
Database Administrator
IQSYS Zrt
01.2005 - 01.2012
- Administered, supported and monitored databases by proactively resolving database issues and maintaining servers.
- Eliminated downtime by accurately implementing databases.
- Wrote and maintained technical and functional specifications to document database intentions and requirements.
- Set up and controlled user profiles and access levels for each database segment to protect important data.
- Installed, upgraded, configured and tuned database systems and all associated LINUX and Windows environments.
Education
Bachelor of Science - Information Technology
Győri Széchenyi István Egyetem
Győr 09.2005 - 06.2008
Tuning And Optimizing Microsoft SQL 2005 -
NetAcademia
Budapest 01.2010 - 01.2010
Maintaining A MSSQL Server 2008 R2 Databas -
NetAcademia
Budapest 01.2011 - 01.2011
Oracle 11g: RAC And Grid Infrastructure Admin -
Oracle Hungary
Budapest 01.2012 - 01.2012
Administering Microsoft. SQL Server 2012 Databases -
IQSOFT
Budapest 01.2013 - 01.2013
Oracle Database 11g: Performance Tuning DBA -
Oracle Hungary
Budapest 01.2014 - 01.2014
Oracle Certfied Professional - Oracle 12c OCP
IQSOFT
Budapest 01.2015 - 01.2015
Microsoft SQL Cloud -
Microsoft
Győr 01.2017 - 01.2017
Administering Microsoft. SQL Server 2016 Databases -
IQSOFT
Budapest 01.2019 - 01.2019
Microsoft Certified: Azure Data Fundamentals - Microsoft Certified: Azure Data Fundamentals
Microsoft
Budapest 01.2020 - 01.2020
Oracle Database: Performance Management And Tuning -
Oracle
Budapest 09.2021 - 09.2021
HPE Data Fabric Cluster Administration
HPE
09.2022
Oracle DBA 2019 Certified Professional
Oracle University
06.2022
Skills
Relational Database Management
Running backups
Linux operating system
Critical thinking
Analytical skills
Shift Scheduling
Employee Evaluation
Team motivation
Performance Optimization
Technical Troubleshooting
Data Warehousing
Hadoop Ecosystem
Timeline
Team Leader\Senior Engineer
T-Systems Hungary Ltd\Hungarian Telecom
04.2022 - Current
Oracle Database: Performance Management And Tuning -
Oracle
09.2021 - 09.2021
Microsoft Certified: Azure Data Fundamentals - Microsoft Certified: Azure Data Fundamentals
Microsoft
01.2020 - 01.2020
Administering Microsoft. SQL Server 2016 Databases -
IQSOFT
01.2019 - 01.2019
Microsoft SQL Cloud -
Microsoft
01.2017 - 01.2017
Oracle Certfied Professional - Oracle 12c OCP
IQSOFT
01.2015 - 01.2015
Oracle Database 11g: Performance Tuning DBA -
Oracle Hungary
01.2014 - 01.2014
Administering Microsoft. SQL Server 2012 Databases -
IQSOFT
01.2013 - 01.2013
Oracle 11g: RAC And Grid Infrastructure Admin -
Oracle Hungary
01.2012 - 01.2012
Maintaining A MSSQL Server 2008 R2 Databas -
NetAcademia
01.2011 - 01.2011
Tuning And Optimizing Microsoft SQL 2005 -
NetAcademia
01.2010 - 01.2010
Bachelor of Science - Information Technology
Győri Széchenyi István Egyetem
09.2005 - 06.2008
Database Administrator
IQSYS Zrt
01.2005 - 01.2012
Senior Database Administrator
T-Systems Hungary Ltd.
1 2012 - 04.2022
HPE Data Fabric Cluster Administration
HPE
Oracle DBA 2019 Certified Professional
Oracle University
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