06/09/2026 updated

PB
100 % available

Senior Database Specialist & Consultant | Data Warehouse | Oracle, Teradata, PostgreSQL, SQL Server

Prague 6, USA
Worldwide
Master's in math analysis, Comenius University, Faculty of Math and Physics, Bratislava, Slovakia
Prague 6, USA
Worldwide
Master's in math analysis, Comenius University, Faculty of Math and Physics, Bratislava, Slovakia

Profile attachments

peter_bubeliny_resume.pdf

About me

Database Specialist/Consultant with more than 20 years of experience with data warehouse and OLTP systems, with Oracle, Teradata, PostgreSQL and MS SQL Server technologies and many years of international experience is offering his expertise.

LinuxPostgreSQLSQL Server Management StudioShell ScriptSQL DatabasesTeradata SQLOracle 10g/11g
Database Architecture & Development
Expertise in database and data architecture, modeling, design, development, and administration across Oracle, Teradata, PostgreSQL, and MS SQL Server platforms, including ETL development and database performance tuning with over 20 years of experience.

Data Warehouse & OLTP Systems
Deep knowledge in designing and implementing Data Warehouse and OLTP systems, including Business Intelligence solutions, across industries such as retail, banking, insurance, telecommunications, healthcare, and transportation.

SQL & Programming Languages
Proficiency in SQL, PL/SQL, TD SPL, T-SQL, PL/pgSQL, UNIX shell scripting, Windows PowerShell scripting, and C, enabling comprehensive database development and automation tasks.

Business & Data Analysis
Strong capabilities in business and data analysis, translating business requirements into data models and database solutions, with experience interfacing directly with business users and stakeholders.

Cloud & Modern Data Platforms
Knowledge of Oracle Cloud Infrastructure (OCI 2025 Foundations Associate certified), Databricks, and Snowflake for modern data engineering, acquired through recent certifications and courses in 2025.

Data Modeling Tools
Hands-on experience with SAP Sybase PowerDesigner, CA ERwin, IBM Rational System Architect, and Sparx Systems Enterprise Architect for data and enterprise architecture modeling.

DevOps & Collaboration Tools
Practical use of Git, GitHub, Bitbucket, JIRA, RabbitMQ, Oracle Data Integrator, Microsoft Power BI, and MS Report Builder in project delivery and team collaboration environments.

AI-Assisted Development
Utilization of Anthropic AI Claude Code as a development tool, supporting modern software and database development workflows.

Mentoring & Technical Leadership
Experience in mentoring junior database analysts and developers, as well as leading architecture and development efforts on complex data projects.

Languages

EnglishFluentRussianGoodSlovakNative speakerCzechFluent

Project history

Data Specialist

Cesko-Moravsky Zemedelsky Fond, Prague, Czech Republic
Data Specialist role using PostgreSQL. Other tools include Anthropic AI Claude Code and Microsoft Power BI.

Senior PL/SQL Developer

CEPRO, Prague, Czech Republic (via Neit Consulting, Prague, Czech Republic)
Oracle production support and PL/SQL development of the company's DWH and reporting systems. Other tools: ServiceNow.

Senior SQL Developer

Barclays, Prague, Czech Republic (contract with 94 Tech, London, UK)
Database analysis, development, performance tuning, and administration of the bank's MS SQL Server databases for the Financial Resource Management data warehouse. Interfacing and supporting business users in the CIB (Corporate & Investment Banking) department. Other tools: Git, Bitbucket, JIRA, Confluence.

Group Database Specialist

Fortuna Entertainment Group, Prague, Czech Republic
SQL and PL/pgSQL database development for the company's PostgreSQL databases. Other tools: Git, Bitbucket, JIRA, RabbitMQ.

Database Specialist

Acamar Corporation, Prague, Czech Republic (Customer: Tesco Stores, Prague, Czech Republic)
Data, database and business analyses, data modeling, database design and development in SQL, PL/SQL and T-SQL, test, and deployment work on projects including WAM (Work And Measurement DWH), WSSI (Weekly Sales, Stock, and Inventory), TGAP (Tesco Group Accounting Policy), SIA (Supplier Income Application), BM (Back Margin), Retail Price determination algorithm design and implementation for WAM, and PT (Price Tool). SQL tuning, operation support of TGAP, architecture and lead development for PT. Technologies: Oracle, SAP Sybase PowerDesigner, UNIX shell scripting, MS SQL Server, Windows PowerShell scripting, MS Report Builder, MDS, Git, GitHub. Mentoring a junior database analyst/developer.

Database Specialist

Acamar Corporation, Prague, Czech Republic (Customer: EquaBank, Prague, Czech Republic)
Analysis of the current ODI workflows. Redesign of the workflows for maximum parallelism.

Data Warehouse Specialist

Profinit Corporation, Prague, Czech Republic (Customer: Komercni banka and Komercni pojistovna, Prague, Czech Republic)
Various tasks, mostly data analysis and database development work on projects KB DQIM (Data Quality Improvement Management), KP Solvency II, and KP Solvency II EIOPA with the common database of the two companies. Prepared and presented a 2-day training on fundamentals of Teradata technology to co-workers.

Data Warehouse Developer

Acamar Corporation, Bratislava, Slovakia (Customer: Ceskoslovenska obchodna banka (CSOB), Bratislava, Slovakia)
Extension of existing Oracle data warehouse, addition of new fields and functionality based on bank requirements and analyst input. Utilization of SAP Sybase PowerDesigner, Oracle PL/SQL, TortoiseSVN, and JIRA. Migrated Oracle set of Teradata scripts used in reporting.

Data Warehouse Designer

Independent Contractor, Brno, Czech Republic (Customer: Home Credit International, Brno, Czech Republic)
Participated in card business module analysis to extend the data warehouse by revolving credit functionality and designed corresponding parts of the data warehouse. Projects: Homer Select 2.4, Group Data Warehouse. Participated in Group Data Warehouse reporting solution troubleshooting using Oracle Business Intelligence (OBIEE). Interfaced HCI risk management specialists, analysts, architects, and database developers.

Teradata Data Modeler

IBM Corporation, Maastricht, Netherlands (Customer: Vodafone, Maastricht, Netherlands)
Teradata CLDM-based logical data modeling of the data warehouse for project Unify phase 2.2. Studied various Amdocs source modules (CRM, OMS, EPC, TC, AR/IC, etc.) and proposed changes to data model and mappings. Interfaced Vodafone system analysts, architects, IBM data modelers, mappers, and ETL developers.

Certificates

Oracle Cloud Infrastrct 2025 Foundations Associate

Oracle

2025

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