Omar G.
Data Engineer
Omar is a seasoned Data Engineer with over ten years of commercial experience, specializing in the design, development, and management of large-scale, cloud-based data warehouses and strategic analytics solutions. He brings deep technical expertise in Python, SQL, Google Cloud Platform (GCP), and Apache Airflow.
Among his key accomplishments is leading the successful migration of a data warehouse—powered by Airflow data pipelines—from AWS RDS to BigQuery within the GCP ecosystem. He has also spearheaded end-to-end cloud migration initiatives and built data warehouses from the ground up, leveraging Python-based pipelines to support scalable, high-performance data environments.
Omar’s ability to architect and optimize data infrastructure ensures reliable, analytics-ready environments that drive informed business decisions.
Main expertise
- ETL 10 years
- Metabase 3 years
- dbt 3 years
Other skills
- Git 7 years
- Oracle 4 years
- Kubernetes 4 years
Selected experience
Employment
Senior Data Engineer
Pager Inc - 3 years 6 months
-
Undertook critical responsibilities in different projects
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Migration of the Data Warehouse from AWS to GCP (building new data pipelines, data models, etc)
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Implementation of new data marts, adoption of a CDC tool for the ingestion of raw data
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Adoption of new Data Governance tool and creation of data integrations.
Technologies:
- Technologies:
ETL
Git
Metabase
AWS
dbt
Terraform
PostgreSQL
MongoDB
Kubernetes
Google Cloud
BigQuery
Apache Airflow
Python
- Data Engineering
SQL
AWS S3
-
ETL Developer
Applaudo Studios - 8 months
-
Participated in a project whose goal was the modernization of the technology stack supporting data analysis and decision-making based on financial information
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The project consisted of the migration of data resources from multiple legacy and heterogeneous sources into GCP
-
Responsibilities included the development of new data pipelines using Scala and Spark
-
Collaborated closely with client stakeholders to ensure effective communication and successful project outcomes
Technologies:
- Technologies:
Scala
ETL
Git
Apache Spark
Google Cloud
- Data Engineering
SQL
-
BI & Data Architect
Telus International - 9 months
-
Led the design and implementation of a standardized reporting package, enabling consistent offerings for the company's clients.
-
Successfully collaborated to reconcile data discrepancies across multiple sources and standardized metrics and KPIs to ensure accuracy and consistency
-
Implemented a mix of technical expertise and analytical thinking to influence the decisions associated with data modeling, database design, data integration, data governance, etc
-
Additionally, the responsibilities included advocating for the implementation and alignment with best practices
Technologies:
- Technologies:
Oracle
- Talend
Apache NiFi
Apache Spark
MSSQL
Google Cloud
BigQuery
Apache Airflow
Python
- Data Engineering
SQL
-
Data Warehouse Developer
TELUS International - 1 year 1 month
-
Participated in multiple projects and daily tasks involving multiple technologies.
-
The role involved the maintenance and creation of Data Pipelines
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Creation and enhancement of reports and dashboards
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Development of automated reports for internal and external users.
Technologies:
- Technologies:
ETL
Oracle
- Talend
Apache NiFi
Apache Spark
MSSQL
Google Cloud
BigQuery
Apache Airflow
Python
- Data Engineering
SQL
-
NetCracker Developer
TELUS - 2 years 5 months
-
Participated as a senior developer in different projects associated with the maintenance and improvement of the
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Telecommunications platform: Netcracker. This was a challenging position that required discovery work and communication skills to obtain important information from different SMEs, along with the development of a complex code base for the Netcracker platform.
Technologies:
- Technologies:
Oracle
-
Business Intelligence Developer (Short-term Project)
SIMAN - 4 months
-
Worked on a project whose main goal was migrating an entire business area (Customers Loyalty) from a provider’s technology stack into the company’s own stack
-
Partnered with technical subject matter experts (SMEs) to gain a deep understanding of the data nuances within source systems
-
Engaged with business representatives to ensure alignment of data products with business requirements and objectives
-
Technical responsibilities included: designing new data models, creation of new ETLs and definition of reports
Technologies:
- Technologies:
ETL
Oracle
- Data Engineering
SQL
-
Developer Analyst
AFP Confia - 10 months
- Participated in different projects, related to the maintenance and addition of new features to the company’s website services and desktop applications.
Technologies:
- Technologies:
Oracle
SQL
Business Intelligence Solutions Developer
Avianca - 3 years 5 months
-
Contributed to the successful integration of two Data Warehouses following the company merger, ensuring seamless data consolidation
-
Participated in the maintenance, enhancements, and expansion of existing data pipelines to support ongoing business needs
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Designed and developed automated executive reports, streamlining data delivery for senior leadership
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Development and maintenance of ETLs to feed the Data Warehouse of the company
-
Utilized MicroStrategy to design and develop ad-hoc reports and dashboards, enabling data-driven decision-making
Technologies:
- Technologies:
ETL
Oracle
MSSQL
- Data Engineering
SQL
-
Education
BSc.Computer Science
Universidad de El Salvador · 2002 - 2009
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