Jakub Szepietowski - Oracle Consultant

Q: Where is Jakub based?

Jakub is based in Kronberg im Taunus, Germany .

Q: What languages does Jakub speak?

Jakub speaks the following languages: Polish (Native), German (Advanced), English (Advanced) .

Q: How many years of experience does Jakub have?

Jakub has at least 16 years of experience. During this time, Jakub has worked in at least 7 different roles and for 6 different companies . The average length of individual experience is 2 years and 4 months . Note that Jakub may not have shared all experience and actually has more experience.

Q: What is Jakub's latest experience?

Jakub's most recent position is Oracle Consultant at Airline Sector .

Q: What companies has Jakub worked for in recent years?

In recent years, Jakub has worked for Airline Sector and Banking Sector .

Q: Which industries is Jakub most experienced in?

Jakub is most experienced in industries like Banking and Finance , Aerospace and Defense , and Information Technology (IT) . Jakub also has some experience in Telecommunication .

Q: Which business areas is Jakub most experienced in?

Jakub is most experienced in business areas like Information Technology (IT) , Operations , and Project Management . Jakub also has some experience in Customer Service .

Q: Which industries has Jakub worked in recently?

Jakub has recently worked in industries like Banking and Finance and Aerospace and Defense .

Q: Which business areas has Jakub worked in recently?

Jakub has recently worked in business areas like Information Technology (IT) and Operations .

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Kronberg im Taunus, Germany

Experience

Dec 2017 - Apr 2024

6 years 5 months

Oracle Consultant

Airline Sector

Microsoft Azure: design, shape, and capacity analysis including PoC
Microsoft Azure: final implementation for migration from on-prem RAC to single instance Data Guard
Performance tuning and troubleshooting for crew management systems (pilots and briefings)
Design and implementation of disaster recovery aware system based on RAC Extended Cluster and Data Guard
OEM: Oracle Cloud Control maintenance, installation and upgrades (12.1.0.5 > 13.3 > 13.5)
OEM: creating agent golden image with new RU and security fixes for full-scale environment
OEM agent upgrade
OEM: developing custom metric extensions and reports
OEM: full monitoring setup with template collection and monitoring templates and incident rule configuration
Upgrades: GI from 11.2.0.4 to 12.1.0.2, to 18.4, to 19.6+
Upgrades: databases from 11.2.0.2 to 12.1.0.2, to 19.18+
Redesign and license optimization based on Oracle SE on ODA and DBVisit
Design of virtualized platform based on OLVM and license optimization using hard partitioning
Migration of databases from bare metal to OLVM

Jan 2016 - Jun 2025

9 years 6 months

DBA, Oracle Consultant, Exadata SME for EMEA, Primary DBA for SEPA

Banking Sector

Exadata full stack patching including compute nodes, storage cells, and Infiniband switches to recent versions
Exadata maintenance and storage reorganization on cell, grid, and ASM levels for production, UAT, and dev clusters
OCI cloud: architecture planning for migration to ExaCC (Exadata@Customer), the biggest private cloud in Europe/world
OCI cloud: onboarding new virtualized Exadata (with and without node subsetting)
Consulting on engineered systems, RAC, backup and restore, tuning, and capacity planning
Migrations using Data Pump and Data Guard, standby switchover with minimal downtime, TTS with endianness conversion, and image copies on external storage
Upgrades: Oracle Database from 11+ to 19c; GI upgrades to 18 and 19c
Onboarding four Exadata X7-8 and one X7-8 full rack+ setup
ZFS backup infrastructure for both data centres for SEPA
Deep dive performance tuning and troubleshooting for mission-critical OLTP and DWH databases (Exadata, RAC, Data Guard, ASM, ZFS) using AWR/ASH/Snapper/OEM, traces, oradebug, and fixes via SQL Profiles, baselines, and hints
Consolidation of two projects on full rack X6-2, including storage reconfiguration, patching to newest Exadata image (18.1.4), GI upgrade to 18c, and IORM implementation based on requirements
Endurance testing with SLOB (Project Treasury)
Project technical lead and outage escalation
Third-level global Oracle support
Technical lead for bank-wide 19c certification project and onboarding new Exadata systems

Aug 2015 - Dec 2015

5 months

DBA, Oracle CloudControl Consultant

Volkswagen Financial Services AG

Monitoring migration from IBM TEC to Oracle Cloud Control 12c
Building monitoring templates for databases, clusters, hosts, WebLogic, and OIM targets
Building custom metric extensions (agent-site and repository-site) to extend Oracle monitoring capabilities
Creating reports based on ME data and Cloud Control target metadata
Creating incident and notification rules
Monitoring performance degradation over time with AWR Warehouse and repository metrics
Automatic identification of database configuration issues
Rewriting shell scripts to OEM format
Creating documentation in Confluence
Troubleshooting and performance tuning at SQL, instance, and storage levels for test, QS, and production databases
Integration of HP BSM with OEM through connector

Jun 2013 - Jul 2015

2 years 2 months

DBA, Oracle Consultant

Datev eG

Validation of enterprise backup and restore strategy
Creating and installing high availability environment for mission-critical OLTP databases (RAC and Data Guard, including client failover)
Consulting and support in real application testing, engineered systems like Exadata, ODA/OVCA, and automatic degree of parallelism
Creating company-wide procedure for installing and administering Oracle products according to best practices (orachk tool)
Coordinating and realizing PoC for OVM as high availability and consolidated platform with chargeback model and integration with Cloud Control
Troubleshooting and performance tuning at SQL, instance, and storage levels for test, QS, and production databases
Data modeling with Rational Rose Model Integrator, MID Innovator, Embarcadero DB Change Manager, and ER Studio Data Architect
Third-level support for local Oracle DBA team
Technical project management

Jun 2011 - May 2013

2 years

DBA, Oracle Consultant of ProActive System Management

OPITZ CONSULTING

Day-to-day Oracle DBA tasks (ticket system)
Backup, restore, and disaster recovery procedures
Regular clones of production systems for development and testing
Designing, installing, configuring, administering, and troubleshooting production and development Oracle-based systems
Designing and implementing high availability and replication concepts (RAC, Data Guard, standby systems, GoldenGate)
Troubleshooting and performance tuning in enterprise multi-tier environment using STATSPACK, AWR, and Snapper; supporting developers
Engineering and documenting new solutions based on newest Oracle technologies (Exadata, Flash Cache, cards)
DB patch regression tests and installations
Technical project management
Third-level support and coaching new DBAs

Jun 2010 - Jun 2011

1 year 1 month

Junior DBA, Junior Consultant of Service Engineering Department

OPITZ CONSULTING

Day-to-day Oracle DBA tasks
Backup and recovery with RMAN
Maintenance and documentation tasks
Installation, configuration, administration, and troubleshooting of production and development Oracle databases and Grid Control environments
Installation and configuration of small production and test RAC and Data Guard environments
Administering LAN and WAN environments
Translating German documentation

Jan 2007 - Mar 2008

1 year 3 months

Remote

Help Desk Consultant

Telekomunikacja Polska SA

Customer service
Supervising and remotely administering client computers and servers
Creating electronic documentation
Administering LAN and WAN environments
Remote maintenance

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Banking and Finance (10 years), Aerospace and Defense (6.5 years), Information Technology (5 years), and Telecommunication (1 year).

Banking and Finance

Aerospace and Defense

Information Technology

Telecommunication

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (16 years), Operations (11.5 years), Project Management (4 years), and Customer Service (1 year).

Information Technology

Operations

Project Management

Customer Service

Skills

Supported Oracle Versions: 9i/10g/11g/12c/19c (Oracle Certified Master), Oracle 23c Beta Tester
Supported Operating Systems: Linux (Oel, Redhat, Suse) (Redhat Certified System Administrator), Unix (Solaris, Hp-ux, Ibm Aix), Windows
Supported Engineered Systems: Exadata From X4 Till The Latest X9 (Oracle Exadata Certified Implementation Specialists), Zfs Storage
Supported Middleware: Goldengate 10/11 (Oracle Goldengate 10 Certified Implementations Specialists)
Administration: Day-to-day Database Administration (Single Instance, Real Application Cluster Rac, Dataguard Dg), Creating A Backup Strategy Based On Rman, Installation And Configuration Of Databases According To Best Practices, Patching And Upgrades, Troubleshooting, Administration Of Linux Based Os And Networks, Implementation Of Monitoring Solutions (Gridcontrol, Nagios, Self-developed Scripts)
Cloud Environment: Oracle Cloud Infrastructure (Oci), Microsoft Azure, Design, Capacity Planning And Implementation, Licensing
Migration/upgrade/replication: Planning Of Migration Processes, Migrations With Dataguard, Datapump, Transportable Tablespaces Or Goldengate
Integration And Testing: Network Layer, (Back End) Databases, Operating Systems, Volume Managers, Storage Layer, Implementation And Testing Using Oracle Real Application Testing (Or Other Tools Like Quest Benchmark Factory, Swingbench Etc.)
Performance Tuning: Performance Problems Solving Spanning Database And Storage Layer, Oracle Instance And Sql Tuning, Oracle Optimizer Considerations (Cbo)
Architecture: Design, Testing And Implementation Of High Availability (Ha) Solutions Based On Rac, Data Guard And Oracle Virtual Machine Ovm/olvm (Kvm Based)
Ability Of Team Working Acquired In Different Conditions Of Education And Working
Ability Of Integration With Different Cultures Acquired During Working In The Usa, Canada And Germany
Practical Problem-solving Skills
Ability To Learn Fast
Self-disciplined

Languages

Polish

Native

German

Advanced

English

Advanced

Education

Oct 2007 - Jun 2010

Jagiellonian University (pol. Uniwersystet Jagielloński), Faculty of Physics, Astronomy and Applied Computer Science

Master, Performance Tuning of Oracle 9i RDBMS · Applied Computer Science · Kraków, Poland

Oct 2003 - Jun 2007

The State School of Higher Professional Education in Elblag (pol. Państwowa Wyższa Szkoła Zawodowa w Elblągu), The Institute of

Computer Science Engineer · Computer Science · Elbląg, Poland

Certifications & licenses

Oracle AI Vector Search Certified Professional

Oracle Cloud Infrastructure 2023 Architect Professional

Oracle Autonomous Database Cloud 2019 Specialist

Oracle Cloud Infrastructure Foundations 2020 Associate

OCM (Oracle Certified Master) 11g

Oracle GoldenGate 10 Certified Implementation Specialist

Oracle Exadata 11g Certified Implementation Specialist

OCP (Oracle Certified Professional) Oracle 11g

RHCT (Red Hat Certified Technician) RedHat 5

RHCSA (Red Hat Certified System Administrator) RedHat 5

Profile

Created

June 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Jakub based?

Jakub is based in Kronberg im Taunus, Germany.

What languages does Jakub speak?

Jakub speaks the following languages: Polish (Native), German (Advanced), English (Advanced).

How many years of experience does Jakub have?

Jakub has at least 16 years of experience. During this time, Jakub has worked in at least 7 different roles and for 6 different companies. The average length of individual experience is 2 years and 4 months. Note that Jakub may not have shared all experience and actually has more experience.

What roles would Jakub be best suited for?

Based on recent experience, Jakub would be well-suited for roles such as: Oracle Consultant, DBA, Oracle Consultant, Exadata SME for EMEA, Primary DBA for SEPA, DBA, Oracle CloudControl Consultant.

What is Jakub's latest experience?

Jakub's most recent position is Oracle Consultant at Airline Sector.

What companies has Jakub worked for in recent years?

In recent years, Jakub has worked for Airline Sector and Banking Sector.

Which industries is Jakub most experienced in?

Jakub is most experienced in industries like Banking and Finance, Aerospace and Defense, and Information Technology (IT). Jakub also has some experience in Telecommunication.

Which business areas is Jakub most experienced in?

Jakub is most experienced in business areas like Information Technology (IT), Operations, and Project Management. Jakub also has some experience in Customer Service.

Which industries has Jakub worked in recently?

Jakub has recently worked in industries like Banking and Finance and Aerospace and Defense.

Which business areas has Jakub worked in recently?

Jakub has recently worked in business areas like Information Technology (IT) and Operations.

What is Jakub's education?

Jakub holds a Master in Applied Computer Science from Jagiellonian University (pol. Uniwersystet Jagielloński), Faculty of Physics, Astronomy and Applied Computer Science and a Bachelor in Computer Science from The State School of Higher Professional Education in Elblag (pol. Państwowa Wyższa Szkoła Zawodowa w Elblągu), The Institute of.

Does Jakub have any certificates?

Jakub has 10 certificates. Among them, these include: Oracle AI Vector Search Certified Professional, Oracle Cloud Infrastructure 2023 Architect Professional, and Oracle Autonomous Database Cloud 2019 Specialist.

What is the availability of Jakub?

Jakub is immediately available full-time for suitable projects.

What is the rate of Jakub?

Jakub's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.