Bogdan-Alexandru Constantinescu
Wroclaw,02
Summary
As a seasoned Senior Database Administrator, my career in the IT field spans over 15 years, with a focused expertise in Database Administration for more than a decade. Throughout this journey, I have engaged with a vast spectrum of environments, from addressing user-centric issues to spearheading the management, upgrading, and migration of extensive infrastructures. My experience is particularly deep-rooted in executing MSSQL database migrations, adeptly navigating both Azure cloud services and On-Premise setups. My approach is not just technical but strategic, aiming at optimizing systems and leading innovations that ensure operational excellence and cutting-edge data management. This blend of skills and experiences makes me adept at driving projects that require nuanced understanding and robust technical leadership, making me a valuable asset in any IT and database management scenario.
Overview
12
12
years of professional experience
Work History
MSSQL Database Administrator
IBM / Kyndryl
Wroclaw, Lower Silesian District, Poland
12.2018 - Current
- Leadership in Database Administration : I spearhead the Benelux MSSQL and MYSQL team, delivering specialized support across European data centers and in cloud environments, guiding my team through complex challenges with expertise.
- SLA and Contractual Compliance : I ensure adherence to SLAs and contractual obligations, focusing on system uptime and efficient patch management, to meet and exceed our service commitments.
- Cross-Departmental Collaboration : I collaborate closely with various IT departments to optimize database environments, ensuring seamless operation and performance across all platforms.
- Critical Environment Troubleshooting : I handle high-priority trouble tickets and maintain a 99.925% uptime by adeptly resolving issues in critical production environments, ensuring business continuity.
- Comprehensive DB Management : I oversee all facets of database administration, including planning, standards development, installation, configuration, optimization, and monitoring in a clustered Windows Server environment, bringing reliability and efficiency to our operations.
- High-Availability Systems Design : I architect and implement complex, highly available database solutions with disaster recovery capabilities, utilizing technologies such as Microsoft Clustering and Always-ON, ensuring our data's integrity and availability.
- Performance Monitoring and Optimization : I set up systems to monitor database activity, identify performance bottlenecks, and automate repetitive tasks for efficiency, enhancing system performance and user satisfaction.
- Project Leadership : I actively lead and contribute to data center migration projects, ensuring strategic alignment and execution, demonstrating my project management skills and strategic insight.
- Compliance and Best Practices : I adhere to ITIL frameworks, including change management and incident response, and maintain compliance with audit and certification requirements, ensuring our operations meet the highest standards.
- Database Migration and Optimization : I coordinate the end-to-end database migration process, assist in hardware sizing for new servers, and optimize server performance to meet customer specifications, including backup and maintenance planning, showcasing my technical and consultative skills.
Senior Database Administrator
NATEK
Wroclaw, Lower Silesian District, Poland
11.2016 - 11.2018
- Ensure robust backup strategies for all database servers to meet Recovery Point Objectives (RPO).
- Perform routine backup tests to align with the business's Recovery Time Objectives (RTO).
- Troubleshoot and resolve MSSQL Server service outages promptly.
- Evaluate and implement appropriate data storage and recovery technologies for new systems, including clustering, log shipping, and mirroring.
- Oversee the installation, configuration, migration, security, and performance tuning of MSSQL Servers.
Lead System Engineer
IBM
Wroclaw, Lower Silesian District, Poland
03.2015 - 10.2016
Senior MSSQL Database Administrator
IBM
Wroclaw, Lower Silesian District, Poland
04.2014 - 03.2015
MSSQL Database Administrator
IBM
Brno, Czech Republic
06.2012 - 04.2014
Education
Bachelor of Science - Civil Engineering
Technical University of Civil Engineering
Bucharest2008
High School Diploma -
Mihail Sadoveanu High School
Bucharest2004
Skills
- Azure Cloud Database Administration
- MSSQL Database Administration (2000, 2005, 2008, 2012, 2014, 2016, 2017, 2019 and 2022)
- HA, DR & BCP (High Availability, Disaster Recovery and Business Continuity: Log Shipping, Replication, Mirroring, Always-ON, Failover Cluster)
- Backup & Recovery, Point in Time Recovery
- Performance Tuning and Query Optimization
- TSQL and SQL Programming
- Database Migration and Server Patching
- Capacity Planning
- Automation
- Supported MSSQL: SSAS, SSIS and SSRS
- Understanding of MYSQL, DB2, Oracle, Sybase
- Windows server / domain administration Active Directory Administration
- Programming skills: VB NET & Python
- Scripting languages: TSQL, PowerShell, Bash
- Strong knowledge if IBM internal tools: TDP-SQL, TSM servers
- Knowledge of MAC OSX, Linux
- Strong knowledge of automatization and process improving
Accomplishments
- AZ-900: Microsoft Azure Fundamentals
- Microsoft Certified Database Administration
- Designing, Optimizing and Maintaining a Database Administrative Solution Using Microsoft SQL Server
- Microsoft SQL Server, Implementation and Maintenance
- MCITP: Database Administrator
Languages
Romanian
Native language
English
Proficient
C2
French
Elementary
A2
Italian
Elementary
A2
Spanish
Intermediate
B1
Polish
Intermediate
B1
Czech
Elementary
A2
Timeline
MSSQL Database Administrator
IBM / Kyndryl
12.2018 - Current
Senior Database Administrator
NATEK
11.2016 - 11.2018
Lead System Engineer
IBM
03.2015 - 10.2016
Senior MSSQL Database Administrator
IBM
04.2014 - 03.2015
MSSQL Database Administrator
IBM
06.2012 - 04.2014
Bachelor of Science - Civil Engineering
Technical University of Civil Engineering
High School Diploma -
Mihail Sadoveanu High School