Filip Brkic, Developer in Zagreb, Croatia
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Filip Brkic

Verified Expert  in Engineering

Data Engineer and Developer

Location
Zagreb, Croatia
Toptal Member Since
September 28, 2022

Filip has been in the ETL field for over six years. For him, there is nothing more fun than developing an ETL and ELT process and seeing the data flow in a report later used by the business side. Filip uses different databases and engages with various fields, from banks to the hospitality industry.

Data WarehousingETLSQLOracle Data Integrator (ODI)OracleData Warehouse DesignData ModelingData EngineeringMigrationPostgreSQLOracle PL/SQLLinuxTalendRedshiftAWS Glue

Portfolio

Self employed
AWS Glue, Data Build Tool (dbt), PostgreSQL, Data Engineering, Snowflake
Self employed
Data Warehousing, Oracle Warehouse Builder (OWB), Oracle Data Integrator (ODI)...
iOLAP
Amazon Web Services (AWS), Redshift, Talend, Oracle PL/SQL, Python, CSV...

Experience

ETL - 6 yearsData Warehousing - 6 yearsOracle - 5 yearsPostgreSQL - 5 yearsTalend - 3 yearsAmazon Web Services (AWS) - 3 yearsRedshift - 2 yearsData Build Tool (dbt) - 2 years

Availability

Part-time

Preferred Environment

Linux, Talend, Oracle Data Integrator (ODI), Redshift, Oracle, Oracle Application Express (APEX), PostgreSQL, Amazon Web Services (AWS)

The most amazing...

...thing I've developed is a data mart for a bank to track users who were not paying on time and assign a rating based on it.

Work Experience

Data engineer

2022 - PRESENT
Self employed
  • Implemented cutting edge technologies to improve data quality checks.
  • Tracked and fixed bugs using Jira/GitHub as a reporting tool.
  • Monitoring of production jobs and actively preventing failures.
Technologies: AWS Glue, Data Build Tool (dbt), PostgreSQL, Data Engineering, Snowflake

ETL Developer

2021 - 2022
Self employed
  • Migrated OWB into the Oracle Data Integrator (ODI) 12. This included data pipelines and the entire migration lasted almost a year.
  • Used Jira as the main tool to track progress and hours spent on each specific section.
  • Oversaw the initial launch of the new data pipeline, ensuring no issues were happening.
Technologies: Data Warehousing, Oracle Warehouse Builder (OWB), Oracle Data Integrator (ODI), Data Warehouse Design, Oracle PL/SQL, ETL, CSV, ETL Tools, Data Engineering, Apache Airflow, Amazon S3 (AWS S3)

ETL Developer

2021 - 2022
iOLAP
  • Optimized huge jobs to run 40% faster on average and improved data quality.
  • Used Jira and daily meetings to discuss milestones.
  • Oversaw a team of four developers, met daily with business users, and tracked projects.
  • Took charge of our daily high data volume jobs that populated over 500 gigabytes of data.
  • Managed agents, agents cluster creation, job failures, and new tf creations and handled user permissions in IICS.
Technologies: Amazon Web Services (AWS), Redshift, Talend, Oracle PL/SQL, Python, CSV, ETL Tools, Data Engineering, Apache Airflow, Amazon S3 (AWS S3)

ETL Developer

2018 - 2021
BiLog
  • Contributed to over 30 projects to develop the database and create the reports in APEX for the users.
  • Utilized Jira for milestones and APEX internal logging tool in which a user could report a bug to the back-end team.
  • Migrated a complete data mart from DB2 to Oracle.
Technologies: Oracle, Oracle Application Express (APEX), Oracle PL/SQL, ETL, Star Schema, Python 3, CSV, ETL Tools, Data Modeling, Data Engineering, Migration

Junior Database Developer

2017 - 2017
AdScanner
  • Developed the ETL processes to load video data into the database and built APIs for the website data.
  • Tracked all tickets in Jira and used Kanban boards for extensive brainstorming sessions.
  • Developed a sharded PostgreSQL database to improve loading efficiency by over 30%.
Technologies: PostgreSQL, REST, SOAP, Star Schema, Data Engineering

APEX Custom SQL Builder

Created an APEX project in which the business users could query data without knowing SQL and manipulate existing rules on that data. For example, there is a check when a client is alerted that if a value crosses over 200, they can change it to 300.

DB2 to Oracle Migration

Migrated pieces of the data warehouse from DB2 to Oracle. My main focus was on migration and optimization so that it could be maintainable without the need to relocate again. After completion, the loads, on average, were five times faster compared to the DB2.

Data Warehouse Creation

The client wanted a new data warehouse to fit their requirements. My primary responsibilities were creating and populating the DWH. After completion, the client could dynamically import data from .csv, .xlsx, .txt, or any flat format into the DWH.
2012 - 2016

Bachelor's Degree in Information Technology

Rochester Institute of Technology (RIT Croatia) - Dubrovnik, Croatia

Tools

Oracle Application Express (APEX), AWS Glue, Oracle Warehouse Builder (OWB), Apache Airflow

Paradigms

ETL, REST

Languages

SQL, Python 3, Python, Snowflake

Platforms

Oracle Data Integrator (ODI), Oracle, Linux, Talend, Amazon Web Services (AWS)

Storage

Redshift, PostgreSQL, Oracle PL/SQL, Amazon S3 (AWS S3), IBM Db2

Other

Data Warehousing, Data Warehouse Design, Star Schema, CSV, ETL Tools, Data Modeling, Migration, Data Engineering, Data Build Tool (dbt), SOAP

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