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Adrian N.

Data Engineer

445 dollar
Freelancer
21 years
Bucharest, ROMANIA
Hadoop Oracle Python

My experience

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Raiffeisen BankOctober 2019 - Present

Creating and maintaining data pipelines.

Cloudera Data Platform administration and implementation.

Datastax Cassandra administration and implementation.

Involved in the implementation and architecture of local Data lake.

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Information Systems Associates FZEJune 2013 - June 2019

Oracle Database and Oracle Solaris operaring system administration.

Data and database architecture including data flows, data cleansing, master and metadata management and data modeling (relational and multidimensional)

The development and management of databases that support the use of several aviation industry business solutions.Involved in several aviation domain related projects such as Hybrid PSS, Revenue management, Flight optimizer, Weight and Balance, Crew Scheduling.

Big Data, NoSQL (Hadoop, Cloudera Impala, Hive, HBase, Cassandra, ElasticSearch, Neo4J) implementation and administration.

Performed migration/consolidation from Oracle 10g Linux to 2 node Oracle Rac 11g SPARC running on two T5-2 Oracle SPARC architecture.

Performed migration, setup and tuning from Oracle RAC 11g SPARC to Oracle 12.2 running on 4 node RAC running Exadata X7-2 in Oracle Cloud Environment (Oracle Exadata ExaCS).

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IBMDecember 2012 - June 2013

Oracle, Informix and DB2 database administration for IBM’s global cloud infrastructure (IBM Smart Enterprise Cloud) including over 100 instances and hundreds of databases deployed worldwide.

Main responsibilities were related to database administration, tuning, backup and monitoring.

HADR implementation between different Data Centers.

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eServGlobalDecember 2011 - December 2012

Oracle and Informix database administration in telecom industry for over 50 clients worldwide.

Main responsibilities were related to database administration, tuning, backup and monitoring.

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Raiffeisen BankApril 2005 - December 2011

Database administration (Oracle, DB2, MSSQL), over 50 Oracle databases (20 OLTP, 6 Oracle RAC configuration with 2 nodes each, 27 Mixed, 3 Data Warehouses (5 Tb, 3 Tb, 18 Tb)), 5 IBM DB2 LUW databases, 8 DB2 databases configured with DB2 pureScale and 10 MSSQL databases.

Siebel implementation and administration (Complete Siebel DBA tasks such as specific parametrization and tuning)

Oracle OFSA implementation and maintenance (DBA tasks)

Database migration and consolidation to an IBM i595 midrange server.

Project analysis and architecture (Enterprise Architect), Database design (ERP, UML)

Performed migration of Oracle Ilearning complete stack from Sun Solaris to Redhat Linux.

First Oracle Grid Control implementation in the Romanian banking industry.

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INTRAROMFebruary 2005 - April 2005

All areas of Oracle database administration (backup, performance tuning)

Oracle RAC installation configuration and deployment on a HP Superdome server for Romanian National Railway Company (CFR).

Oracle IAS administration.

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IP DevelAugust 2004 - January 2005

All areas of database administration -

Supporting developers

Migration project for Cingular involving migration from Sybase ASE 10 to Oracle EE 10g

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IMSHealth(MIS Consulting Romania)August 2002 - August 2004

Oracle Database administration.

Application development (Borland C++ Builder/Delphi, Oracle Express OLAP)

Data mining.

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IMSHealth(MIS Consulting Hungary)August 2000 - August 2002

Database administration.

Application development (Borland C++ Builder/Delphi, Oracle Express OLAP)

Data mining.

My stack

Technologies

Machine Learning, IBM WebSphere

IT Infrastructure

Sun Solaris, Unix, Linux Red Hat, Linux, System administration

Others

Teamwork, Grid Computing, Siebel, Database Design

Languages

Oracle PL/SQL, Korn Shell, SQL, ODBC, Java, Python, C++

ERP&CRM

Oracle CRM

Analysis methods and tools

Enterprise Architect

Databases

Oracle 10g, Oracle 11g, Oracle 12c, Database Administration, Informix, Couchbase, Oracle, DB2, Microsoft SQL Server

Business Intelligence

OLTP

Big Data

Hadoop

My education and trainings

Certifications - --

Engineer - Faculty of Electrotechnics and Informatics Oradea1996 - 2001