Ondřej Kmoníček - Senior Database Developer (PL/SQL, ETL)

Q: Where is Ondřej based?

Ondřej is based in Prague, Czech Republic .

Q: What languages does Ondřej speak?

Ondřej speaks the following languages: English (Advanced), Czech (Elementary) .

Q: How many years of experience does Ondřej have?

Ondřej has at least 17 years of experience. During this time, Ondřej has worked in at least 6 different roles and for 8 different companies . The average length of individual experience is 2 years and 10 months . Note that Ondřej may not have shared all experience and actually has more experience.

Q: What is Ondřej's latest experience?

Ondřej's most recent position is Data Analyst / Developer at J&T Bank .

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

In recent years, Ondřej has worked for J&T Bank , KBC Bank , ČSOB SK , and Raiffeisenbank .

Q: Which industries is Ondřej most experienced in?

Ondřej is most experienced in industries like Banking and Finance , Aerospace and Defense , and Energy . Ondřej also has some experience in Telecommunication and Retail .

Q: Which business areas is Ondřej most experienced in?

Ondřej is most experienced in business areas like Business Intelligence , Information Technology , and Marketing . Ondřej also has some experience in Operations .

Q: Which industries has Ondřej worked in recently?

Ondřej has recently worked in industries like Banking and Finance .

Q: Which business areas has Ondřej worked in recently?

Ondřej has recently worked in business areas like Business Intelligence , Information Technology , and Operations .

Recommended expert

Prague, Czech Republic

Check rate

Experience

Jul 2022 - Present

4 years 1 month

Data Analyst / Developer

J&T Bank

Project: Data Anonymization

Designed and implemented anonymization processes across multiple domains
Performed detailed data analysis and prepared anonymization rules
Developed anonymization logic and ETL workflows
Implemented ETL processes and validated data outputs
Worked with PowerDesigner Web and metadata structures

Tech: Oracle, MS SQL, PL/SQL, PostgreSQL, SAP PowerDesigner, T-SQL

Feb 2022 - Jul 2022

6 months

Data Expert

KBC Bank

Project: Rainbow

Ensured monthly data freeze and consistency
Validated and analyzed data loads across systems

Tech: Oracle, Teradata

Jan 2021 - Feb 2022

1 year 2 months

Senior Developer / Architect

ČSOB SK

Project: TITAN – Legal Merge

Analyzed consolidation, credit risk, and banking bureau domains
Designed screening and integration solutions
Developed PL/SQL logic and ETL processes
Created DWH tables and metadata structures

Tech: Oracle, PL/SQL, Visio

Mar 2020 - Oct 2021

1 year 8 months

Developer / Analyst

Raiffeisenbank

Project: SFTR Reporting

Implemented ETL processes and DWH tables
Developed XML generation procedures
Modified data models and exported metadata

Tech: Oracle, PL/SQL, SAP PowerDesigner, XML, Perforce

Jun 2019 - Jul 2020

1 year 2 months

Developer / Analyst

Raiffeisenbank

Project: Default Definition

Implemented ETL pipelines and DWH structures
Developed profiling procedures and Default Box logic
Migrated SDMD processes to LSD

Tech: Oracle, PL/SQL, Informatica, SAP PowerDesigner

Oct 2018 - May 2019

8 months

Consultant

Tesco

Project: Stock Loss & Voucher Analysis

Performed business, data, and impact analysis
Developed ETL processes and DWH logic
Supported reporting and analytical workflows

Tech: MicroStrategy, Oracle, PL/SQL

Mar 2018 - Sep 2018

7 months

Developer / Analyst

Mountfield

Project: DWH & DataMart Enhancements

Designed and implemented ETL processes
Created and modified DWH tables
Developed DWH procedures

Tech: MS SQL Server, SSIS

Jan 2017 - Dec 2018

2 years

Developer / Analyst / Senior Consultant

Home Credit

Designed and implemented ETL pipelines for DWH and DataMart
Developed procedures for late collections and reporting
Created tables, workflows, and data transformations

Tech: Oracle, PL/SQL, SQL Server, Workflow Builder

Jan 2010 - Dec 2016

7 years

České dráhy, ČEZ, Česká spořitelna, GE Aviation, UPC, GE Money Bank

Roles: Consultant, BI Specialist, Analyst/Developer

Focus: DWH/BI development, ETL, reporting, data modeling, campaign management

Tech: Oracle, SQL Server, DataStage, ODI, PowerDesigner, SAP BO

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Aerospace and Defense, Energy, Telecommunication, and Retail.

Banking and Finance

Aerospace and Defense

Energy

Telecommunication

Retail

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Business Intelligence, Information Technology, Marketing, and Operations.

Business Intelligence

Information Technology

Marketing

Operations

Summary

Hands-on Senior Database & ETL Developer with 14+ years of experience delivering complex data solutions across banking, regulatory, and enterprise environments. Strong expertise in PL/SQL development, ETL pipelines, data warehousing, anonymization, and regulatory reporting. Skilled in end-to-end BI/DWH lifecycle, data modeling, and high-volume data processing. Known for fast onboarding, analytical thinking, and stabilizing critical data flows. Open to short-term, contract, and remote projects across Germany, Austria, and Switzerland.

Skills

Databases: Oracle, Ms Sql Server, Teradata, Postgresql
Etl Tools: Oracle Data Integrator (Odi), Ibm Infosphere Datastage, Ssis, Adastra Etl Framework, Oracle Workflow Builder
Dwh & Modeling: Dwh Design, Data Modeling, Anonymization, Regulatory Reporting, Metadata Management, Powerdesigner, Ea Sparx
Programming: Pl/Sql, T-Sql, Sql, Xml
Tools: Sql Developer, Ssms, Perforce, Microstrategy, Power Bi, Oracle Bi
Other: Business Analysis, Impact Analysis, Data Analysis, Requirements Gathering

Languages

English

Advanced

Czech

Elementary

Education

University of Economics, Prague

Ing. · Prague, Czech Republic

Certifications & licenses

Power BI

Oracle Advanced PL/SQL Developer Certified Professional

Oracle PL/SQL Developer Certified Associate

Communication & Presentation Skills

Statistics

Experience

Total positions 9

Experience in Banking and Finance 16 y

Avg length 2 y

Longest experience 6 y 11 m

Expertise

Recent roles Data Analyst / Developer, Data Expert, Senior Developer / Architect

Main industries Banking and Finance, Aerospace and Defense, Energy

Main business areas Business Intelligence, Information Technology, Marketing

Qualifications

Highest degree Master

Certifications earned 4

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Ondřej based?

Ondřej is based in Prague, Czech Republic.

What languages does Ondřej speak?

Ondřej speaks the following languages: English (Advanced), Czech (Elementary).

How many years of experience does Ondřej have?

Ondřej has at least 17 years of experience. During this time, Ondřej has worked in at least 6 different roles and for 8 different companies. The average length of individual experience is 2 years and 10 months. Note that Ondřej may not have shared all experience and actually has more experience.

What roles would Ondřej be best suited for?

Based on recent experience, Ondřej would be well-suited for roles such as: Data Analyst / Developer, Data Expert, Senior Developer / Architect.

What is Ondřej's latest experience?

Ondřej's most recent position is Data Analyst / Developer at J&T Bank.

What companies has Ondřej worked for in recent years?

In recent years, Ondřej has worked for J&T Bank, KBC Bank, ČSOB SK, and Raiffeisenbank.

Which industries is Ondřej most experienced in?

Ondřej is most experienced in industries like Banking and Finance, Aerospace and Defense, and Energy. Ondřej also has some experience in Telecommunication and Retail.

Which business areas is Ondřej most experienced in?

Ondřej is most experienced in business areas like Business Intelligence, Information Technology, and Marketing. Ondřej also has some experience in Operations.

Which industries has Ondřej worked in recently?

Ondřej has recently worked in industries like Banking and Finance.

Which business areas has Ondřej worked in recently?

Ondřej has recently worked in business areas like Business Intelligence, Information Technology, and Operations.

What is Ondřej's education?

Ondřej holds a Master from University of Economics, Prague.

Does Ondřej have any certificates?

Ondřej has 4 certificates. Among them, these include: Power BI, Oracle Advanced PL/SQL Developer Certified Professional, and Oracle PL/SQL Developer Certified Associate.

What is the availability of Ondřej?

The availability of Ondřej needs to be confirmed.

What is the rate of Ondřej?

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