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Flavio Alexsandro Silva
From Brazil 03:39 PM (GMT-03:00)
$27/hr or $50,000/yr

Active 3 minutes ago


Member since Oct 2026

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Data Engineer

Data Engineer
Available for hire
Years of experience
6+ years
Experience level
Senior
Available for
Full-time, Part-time, Contract, Freelance
Available from
02 Nov 2026
Architecting Scalable Data Ecosystems

For over a decade, my career has been deeply focused on building and optimizing data architectures. Currently, I am the lead Data Engineer responsible for my company's core data ecosystem. I navigate complex challenges on a daily basis, such as ensuring data consistency and managing volumes of over 10 TB in the data platform.

Over the past couple of years, I have designed and implemented a modern Data Lakehouse from the ground up. My daily stack involves Apache Spark (PySpark), Apache Iceberg, ClickHouse, and Apache Airflow. I don't just use managed cloud services; I personally model, tune, validate, and maintain these tools directly on Linux servers within Oracle Cloud.

Before this, I spent years integrating APIs and flat files to build the foundation for executive dashboards, as well as developing and optimizing extraction pipelines for PostgreSQL Data Warehouses. To complement my heavy hands-on infrastructure experience with modern cloud architecture standards, I am also an Azure Certified Data Engineer.

Software Engineering & Project Management

While my current expertise lies in data, my professional foundation is built on robust software engineering and project management—a combination that deeply influences how I work today.

Earlier in my career, I spent over five years as a Software Developer. I built complex, distributed systems (such as CORBA) using C, C++, and Java across highly heterogeneous operating systems, including Linux, Solaris, SGI Irix, and Windows. Alongside this, I actively administered Linux and Solaris servers.

Additionally, I spent several years in technical leadership and project management roles. I hold an International MBA in Project Management, as well as PMP and some Oracle certifications like OBIEE Specialist.

What Sets Me Apart

My background in low-level software development and project management isn't just past experience—it is the lens through which I approach data engineering today. It sets me apart in a few key ways:

  • Deep System-Level Insight: Because of my years coding in C/C++ and managing OS infrastructure, I understand how software interacts with hardware. When I optimize a PySpark job or tune a complex PostgreSQL architecture, I understand the underlying memory, processing, and networking mechanics—allowing me to extract maximum performance from the tools I use.
  • Business Alignment & Leadership: My project management background ensures that I don't just build pipelines in a vacuum. I understand how to gather requirements, communicate effectively across departments, and ensure that the data architecture actually drives business value and executive decision-making.
  • Resilient Problem Solving: Having built distributed systems long before modern cloud solutions became the standard, I know how to navigate and integrate heterogeneous, complex environments gracefully. I build data systems that are not just fast, but highly resilient and observable.

Employment History

Data Engineer at Boavista Tecnologia Current 2022 - Now
- Data Warehouse design, implementation and implantation; - API data extraction; - Extract, transformation and load of heterogeneous source; - Data Pipeline design, implementation and maintenance; - Dashboard development. * Responsible to tame the main information of various administrative systems in one central position, bringing the visibility of the data and their relationship to the company and creating a central base of indicators about ours products, giving visibility about their metrics in time and their behavior. * Design and implementation of the Data Architecture to the main product of the company to serve the new features and functionalities under the group of Analytics Analysis.
Senior Data Analyst at Datacoper Software 2020 - 2022
- Query Optimization; - ETL improvement and optimization; - Javascript and Java developement (UDFs) for data cleaning and treament in Pentaho / PDI; - Data Warehouse Modeling revision and improvement; - Data Warehouse design; - Database tuning and performance management (postgresql); - Server monitoring; - Project Management of BI implantation and Data Warehouse development. * On one of the ETL projects, the time to execute was beating 6 hours of execution every day. After carefull review of slowest steps, their dependent steps, the database model and tables, and the extraction process, was possible to improve everything to something near 1 hour of execution, including some new additions (new requirements and data needs to new dashboards), reducing the volume of data stored (20% less data stored), with better performance on dashboards, due to better table modelling and indexes, resulting in even broader adoption of the Dashboards, as better usability with lower response times.
Senior Business Intelligence Analyst at Datacoper Software 2015 - 2020
- Queries and ETL development; - ETL review and improvements; - ETL Project design review and architecture revision; - Data Warehouse Tables revision and improvement; - Advanced data treatment and cleansing with javascript in Pentaho / PDI; - Dashboard development with in house BI Tool. * In this time, worked in two great projects. The first one a complex ETL that was being used with the same system, but with diversified versions of origins (and thus variations of the origin data models), should work with the latest version of the ETL creating a unified vision of ETL and Data Warehouse model across diverse customers in their respective infrastructure enabling the possibility of fast and automated updates, bringing the new dashboards and value analysis rapidly to customers. The second was a migration of an ETL project, changing the source of data, adapting from the data model one application to the new one, that was completely different, without breaking the other data integrations that already exists. The biggest challenge was to build a data layer of mapping/transcription of one model to be integrated to the other applications that would remain as the building blocks of this Data Warehouse.
Business Intelligence Specialist - Oracle BI at IT7 Sistemas Ltda 2014 - 2015
- Showcase the technology of OBIEE to customers; - Gather the customer requirements and necessity, showing possible solutions; - Customer case study, helping define most adequate licensing and product architecture.

Education