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Personal Summary

A skilled DQM, data migration, database expert, data architect, SQL/PLSQL developer with in-depth knowledge of data analysis, error handling, ETL/ELT process, data flow, DWH, reporting, data modelling, data architectures who has good organizational skills, is highly efficient and has a good eye for detail. 
Has extensive practical knowledge and experience in SQL/PL SQL development, data analytical techniques, data modelling methodologies, data cleansing (DQM), migration process, BI/DWH area, reporting and definition of the business process, application development, and testing. Has experience in business areas covering the financial (banking and insurance) sector, telecommunications companies, state administration, the production sectors, nuclear energy, smart cities, and pharmaceutical production.
Furthermore, I have experience in PM, lead, and agile methodology. I am able to play a key role in analyzing and reporting data flow problems, developing creative solutions, and producing methodologies for adequate data and database management. 
A quick learner who can absorb new ideas and communicate clearly and effectively. Possesses a good team spirit, is deadline orientated, and can produce detailed technical and business specifications about client requirements.
 
Now looking for a new and challenging Data Architect, Data Modeller, SQL/PLSQL Development, ETL, DWH/BI, Data Analyst, DQM position one which will best use my existing skills and experience and further my personal and professional development.

AREAS OF EXPERTISE

  • DQM / Data Management
  • ETL/ELT
  • CRM, ERP
  • Billing/Accounting Systems
  • RDBMS: Oracle, MSSQL, PostgreSQL, MySQL
  • GCP, Hadoop, Kafka 
  • SQL/PLSQL/TSQL
  • Data Analysis
  • Data architect tasks
  • Business Analysis
  • Error Handling
  • Defect tracking
  • Data Mapping
  • Data modelling
  • Master Data Management
  • Metadata Management
  • Database design
  • Project Management
  • Agile methods
  • Testing
  • Reporting
  • BI/DWH
  • Data Lake / Data Lakehouse
  • Data migration
  • Data mesh
  • Big data
  • Data Governance

Work experience

10/202207/2024
Nortal (Self-employed (Malta)) (remote work)

Data Modeller, Data Architect

Projects: NEOS project in NEOM

Technologies, tools: Apache Kafka/Spark, MySQL, Iceberg, PostgreSQL, Python, DBeaver, PowerBI, Apache Superset, DBSchema, DBT, SAP

Main tasks: Definition of the data model principles, Data modelling, Data Mapping, Mock Data generation, Database architecture design, Database development, Data Product design/development, Development of the data processes and Data Flow Management, Master Data Management, Metadata Management, Pipeline design, development and parametrization in NEOS and source systems area (as a Data Mesh solution). Data analysis, reports and dashboard development (in Power BI, Apache Superset), data pipeline and NEOS tool testing. 

09/202212/2022
Ceva-Phylaxia Vaccine Producer Plc.

Data Modeller, Data Architect

Project: Quality finished product release project

Technologies, tools: GCP - BigQuery, Talend

Main tasks: Data Analysis, Data modelling, Data Mapping, Database architecture design, Database development, Development of the data processes and Data Flow Management, Master Data Management, Metadata Management, Testing.

03/202009/2022
EISDEV Consulting LTD (Self-employed (Malta)) - (in remote and onsite work.)

Data Modeller, Data Architect, DWH/ETL expert

Projects: Vodafone Hungary: Legacy DWH, ODS, Tactical reporting, Nucleus GCP DWH

I have worked on several projects where my tasks' key factors were data handling, data manipulation, and architecture design.

Technologies, tools: DMaaP, CDAP, ORACLE, ODI, Hadoop, Hive, Yarn, GCP, Bigquery, QlickView

Main tasks: Data Analysis, Data Modelling, Mapping, Database architecture design, Data Flow design, Master Data Management, Metadata Management and development of data processes, Data Flow Management, discovery of error causes in data streams, reverse engineering of data movement source codes in DWH and system integration area.

20192020
BCA Hungary LTD. - Self-employed (Hungary) (in remote and onsite work.)

BI, Reporting, Database, DQM, ETL Expert

Projects: Hungarian Nuclear Plant - BI

Technologies: ORACLE, PLSQL, OBIEE

Main tasks:

  • reporting, data analysis and data visualization in Oracle BI (OBIEE);
  • management decision support in the Data Governance and BI area;
  • Data Flow design, Master Data Management, Metadata Management;
  • the planning of the data migration process (ETL/ELT) and technical area;
  • the development of SQL and PLSQL solutions in the BI reporting tools and ETL processes.
20112018
DQM Mentor Ltd.

DQM, DB and ETL/Data Migration Expert, Data Analyst, Business Analyst, PM, DBA

I have worked on several projects as a contractor, where I was responsible for collecting complex business requirements and designing, developing, or supporting construction.

Professional Position:

  • Senior DQM, ETL/Data Migration, BI, DB, Data Analysis and Error Handling Expert, SQL/PLSQL Developer and PM (2011-)

Main tasks:

  • Design and development of DQM, Data Cleansing, ETL/ELT and Data Migration tasks
  • Support of the DWH, Reporting and BI tasks
  • Data Analysis, Analysis of the source environment
  • Support of the data integration processes and environments
  • Master Data Management, Metadata Management, Data Governance
  • Team and project management

Main Projects:

  • T-Systems - implementation of the Asset Handling System as DQM/ETL expert, SQL/PLSQL Developer, Data Analyst and Scrum Master (Oracle, MS SQL, Talend, Oracle DWH, Jira)
  • Telekom Hungary (General Contractor: HPE) - AD/AM Projects as Business Analyst (Scrum Team Member, Product Owner) (Testing, Reporting, System design)
  • Vodafone Hungary (General Contractor: HPE) - AD/AM Projects as Business Analyst, BI expert (Scrum Team Member) (BI/BO, Testing, Reporting, System design)
  • Vodafone Hungary - implementation of SalesForce.com as DQM, ETL expert, SQL/PLSQL Developer and Data Analyst (Oracle, Reporting)
  • Vodafone Hungary - implementation of the Siebel CRM system as DQM, ETL and Data Analysis expert, SQL/PLSQL Developer (Oracle, DWH, Reporting, Jira)
20012011
DSS Consulting Ltd.

DQM Expert, Professional Leader, PM

Participated in several DQM, migration, DWH/BI and system implementation projects through the full project lifecycle. Responsible for professionally managing a DQM expert and development team, developing a data cleansing methodology, and managing customer relations.

Professional Position:

  • Professional Leader (DQM), Team Leader (DQM), Project Manager, Senior DQM and Migration Expert, SQL/PLSQL Developer, DB Developer, DQM Presales Manager (2004-2011)
  • Senior DQM Expert, DB and Business Analyst, PM, SQL/PLSQL Developer, Presales Expert (2002-2004)
  • DQM Expert, PM (2001-2002)

Main tasks:

  • Design and development of DQM, Data Cleansing, ETL/ELT and Data Migration tasks
  • Support of the DWH, Reporting and BI tasks
  • Data Analysis, Analysis of the source environment
  • Support of the data integration processes and environments
  • Master Data Management, Metadata Management, Data Governance
  • Team and project management

Main Projects

  • OTP Bank - Consolidation of Bank customers (DQM) as PM, Business Analyst, SQL/PLSQL Developer (Oracle, Reporting, DWH, System and DB design)
  • Telenor - DQM projects as PM, DQM Expert, SQL/PLSQL Developer (Oracle, Reporting, System and DB design)
  • INVITEL - DQM, ETL and Building of Business Data Bank DB projects as PM, DQM and ETL Expert, Business Analyst, SQL/PLSQL Developer. (Oracle, Erwin, DWH, Reporting, DB design)

19972001
K&H Bank (KBC Bank N.V. in Hungary)

Bank clerks, Branch office manager, Team leader, PM

I started as a bank clerk and in a short time I was promoted to team leader and later to branch office manager. I continued my work in the Bank Center where I first met the Data Quality Management (DQM) and became subproject manager.

Professional Position:

  • DQM subproject manager (PM), Team leader (2000-2001)
  • Business Process Manager, Business Analyst (1999)
  • Branch office manager (1998)
  • Branch office deputy manager, team leader (1998)
  • Bank clerks (1997)

Main Projects:

  • K&H Bank - Data Cleansing Subproject as part of the new account management system implementation project (Equation) as PM, Business Analyst (Oracle, Reporting, System design)

Career Snapshot

  • 23+ years of experience in the IT/Telecom/Financial industry
  • Extensive practical experience and confident knowledge in DQM, ETL/ELT, data analysis, database development, data transformation, system integration on the data level, error handling, reporting, DWH/BI, application development, testing
  • SQL/PLSQL development and Oracle, MSSQL, PostgreSQL  knowledge
  • Business analyst knowledge, experience (CRM, Billing system, ERP systems)
  • Analytical thinking, data scientist skills;
  • Project management knowledge, experience in DQM, IT development, integration, ETL projects 
  • Experience in Agile Methodology

Education

Skills

Data Quality Management
  • analysis of the business process, environment, and data
  • planning of implementation, the definition of the cleansing and business process
  • development of data cleansing, error handling procedure (PLSQL)
Data Architect
  • Survey of the business requirements and technical environments
  • Concept and strategy development
  • Definition of the data handling principles
  • To design and manage the data solutions in the corporate environment
  • Data analysis, Data modelling
Data Analysis, Reporting, BI, DWH
  • Interpret data, analyze results using statistical techniques and provide ongoing reports
  • Data visualization, insight dashboard development
Data modelling
  • Conceptual/Logical/Physical Data Model
  • Normalization and denormalization in row and column-oriented databases
  • Data mapping, data-flow design
  • Data modelling tool usage (Erwin, DBSchema, Enterprise Architect,...)
ETL/ELT, Data Migration, Integration
  • ETL system and methodology knowledge (Talend, SSIS, ODI)
  • Development of the ETL/ELT process and stored procedures (PLSQL)
  • Error handling, testing
Master Data Management
  • identification of master/golden records (data) from the source model
  • Master Data (MD) design
  • Data Flow design from MD
MetaData Management
  • Reverse engineering of the sources
  • Relation DBs, Big Data, NoSQL, semi-structured data
  • relation definition between the metadata and quality standard
Relational Database knowledge
  • Oracle (8/9/10/11/12/18...)
  • MsSQL
  • PostgreSQL
  • MySQL
Data Governance
  • DQM
  • DWH/BI
  • Metamodel
  • Data Flow Management
  • Data Migration/Integration
  • Data Modelling
  • Documentation
SQL/PLSQL
  • Reporting, Stored procedures, ETL, Database design and building,
  • Database optimization, SQL/PLSQL/Database performance profiling
Project Management
  • experience of agile and waterfall methodology
  • team building, decision making, deadline-oriented
  • The knowledge of the DWH models, technics. ETL/ELT (ODI, PLSQL), DQM

Known technologies

Project/work experiences:

  • Oracle: DB development, PLSQL, ETL/ELT, DBA, DWH, DQM, OBIEE, ODI (DWH)
  • MSSQL, T-SQL, MySQL, PostgreSQL
  • DQM, Data Management
  • ETL/ELT: PLSQL, Talend, SSIS, ODI
  • GCP: BigQuery, DMaaP, CDAP
  • Hadoop: Yarn, Pig, Hive
  • Apache - Spark, Kafka, Iceberg, Superset
  • Snowflake,  dbt
  • yEd
  • Erwin Data Modeler, DBSchema
  • Jira, Confluence
  • BI: BO, OBIEE, PowerBI (reporting, DB/Data Source planning, dashboards)
  • CRM: salesforce.com, Siebel, etc.
  • Billing/Account management systems: Amdocs, Equation, Netcracker, etc.
  • ERP: MS Dynamics
  • MS Word, Access, Excel, PowerPoint, Visio, Project, VBA
  • BSS (Netcreker, Amdocs, Equation,...)

My current/planned learning path:

More profound knowledge of

  • data analysis in R and Python
  • MongoDB / NoSQL DBMS
  • Tableau, Power BI, QlikView, Looker, Google Data Studio
  • SSRS, SSIS, SSAS, T-SQL, Azure
  • Hadoop Ecosystem and MapReduce
  • Docker, Kubernetes
  • Apache Kafka platform
  • Databricks, Data Factory
  • GitHub CLI
  • ML, AI
  • AWS