Bretislav Kupera
Verified Expert in Engineering
Database Developer
Lohja, Finland
Toptal member since December 20, 2021
Bretislav has 20+ years of experience in the IT industry. He handled different job positions and responsibilities throughout his career as a developer, team leader, project manager, director of a 20-members team, solutions architect, and business process manager. Bretislav has excellent expertise working with Oracle technologies and is currently focused on SQL tuning, data migration, and PL/SQL optimization processes.
Portfolio
Experience
- PL/SQL Tuning - 20 years
- Oracle PL/SQL - 20 years
- SQL - 20 years
- Oracle - 20 years
- Data Migration - 10 years
- PostgreSQL - 5 years
- Groovy - 3 years
- PHP - 3 years
Preferred Environment
Oracle, Databases, PostgreSQL, SQL, Oracle PL/SQL, PL/SQL Tuning
The most amazing...
...work I've done was leading one of the biggest data migration processes for a bank in the middle Europe, within time, budget, and quality standards.
Work Experience
IT Support Analyst
Carus
- Fixed bugs in PL/SQL code and Oracle forms and reports.
- Learned about the ferry industry background quickly to help our client.
- Supported process improvement concerning ITIL incidents and problem management.
Team Leader
OLR
- Performed the Oracle migration to SQL Server and optimized PL/SQL scripts, getting them 20 times faster.
- Implemented data conversion of six legacy systems into Oracle Retail apps.
- Converted multisystem, multicurrency, multilanguage, and multiorganizational units and sets of books.
- Handled conversion script optimization with parallelism and Oracle statistics set.
IT Director
LMC s.r.o
- Built a development team with 16 members, including analysts, project managers, developers, and testers.
- Implemented process management for the whole company. Optimized key processes in terms of resources, time, and budget.
- Solved market crises and optimized the team's work.
Development Manager
Datart
- Built, managed, and coordinated the biggest Axapta team in the Czech Republic.
- Liaised with business consultants, technical support, and vendors.
- Implemented the version and release management process and set a methodology of coding standards for the team.
Developer
OLR
- Performed the technical analysis of a security management module in Oracle Retail.
- Implemented PL/SQL script migration and conversion.
- Provided support for Oracle Retail products, including RMS, RDW, ReSA, RIB, and Alloc.
Team Leader
Ceska Sporitelna
- Implemented a new information system to the current bank infrastructure. The project involved the migration of 1.5 terabytes of data within a 2-year timeframe and a 50-thousand budget.
- Evaluated each test cycle and migration wave, initiating corrective actions when needed.
- Succeeded in solving problems during the migration phases.
- Created a storybook of migration, consisting of a detailed plan of the technical, business, and third-party activities handled during the migration wave.
Back-end Developer
Oracle
- Created several Oracle application interfaces for banks.
- Developed customization and country-localization approaches.
- Performed code and database optimization, and PL/SQL code tuning.
Experience
Job Portal
http://www.jobs.czEducation
Doctorate in Computer Science
Charles University - Prague, Czech Republic
Certifications
Product Development by Marty Cagan
LMC s.r.o.
Skills
Languages
SQL, Groovy, Java, PHP
Platforms
Oracle
Storage
Databases, Oracle PL/SQL, PostgreSQL
Other
PL/SQL Tuning, Data Migration, Optimization, Leads, IT Management, IT Projects, IT Support, Artificial Intelligence (AI), Linguistics, Genetic Algorithms, Forms, Reports, Axapta, Customer Success, Oracle Forms & Reports
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