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Flander Domingos

@flanderdomingos

Senior Data Engineer at Semantix building Databricks data platforms and RAG solutions that let users query corporate data in natural language.

Brazil

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At Semantix, I design and deliver enterprise data platforms on Databricks, building Python and PySpark pipelines with a Bronze/Silver/Gold architecture on Delta Lake. I also develop business-facing LLM and RAG solutions over corporate data, integrating Azure OpenAI so users can query data in natural language.

At Cedro Technologies, I led analytics and data engineering projects, creating Python and SQL ETL processes with Snowflake and Snowflake Cortex. I built executive Power BI dashboards and tracked portal KPIs and user behavior.

At Cogna Educação, I built dashboards, ETL pipelines and data automations with Power BI, Python and AWS, using Databricks and Oracle to consolidate data into a centralized warehouse. I also orchestrated pipelines with Apache Airflow.

Earlier, at Neobpo, I delivered BI, integration and data engineering solutions for clients, including API integrations and automated pipelines. As a technical lead, I supported junior and mid-level engineers through architecture decisions, code reviews and technical direction.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Semantix

Aug 2026 - Present (3 months)

Lead the end-to-end design and delivery of enterprise data platforms, covering architecture, engineering and data governance. All data engineering runs on Databricks, with pipelines built in Python, PySpark and Spark SQL following the Medallion architecture (Bronze/Silver/Gold) on Delta Lake. I build ingestion and ETL/ELT pipelines from SQL Server, PostgreSQL, MySQL and on-premises sources, and or

Data Analyst Sênior

Cedro Technologies

Jul 2025 - Jun 2026 (11 months)

Led data analytics and data engineering projects focused on automation and performance insights. Designed and maintained ETL processes in Python and SQL, using Snowflake as the data lake and data warehouse and Snowflake Cortex for LLM-powered analytics. Built executive dashboards in Power BI and tracked portal KPIs and user behavior with Google Analytics and Google Tag Manager. Worked with busines

Data Analyst

Cogna Educação

Jul 2023 - Jul 2025 (2 years)

Built analytical dashboards, ETL pipelines and data automations with Power BI, Python and AWS. Used Databricks and Oracle to manage and consolidate large data volumes into a centralized data warehouse. Orchestrated pipelines with Apache Airflow and versioned code with Git. Partnered with business areas to give them more visibility into key performance metrics and to drive data-driven decisions.

Business Intelligence Specialist

Neobpo

May 2022 - Jul 2023 (1 year 2 months)

Delivered BI, data engineering and data integration solutions for multiple clients using SQL Server, Power BI, Python, Pandas and Spark. Built API integrations, automations and data pipelines that cut manual work, improved operational efficiency and made data available for decision-making.

Collected, transformed and processed large data volumes, including Big Data routines and web data extraction

Data Analyst

Digicob

May 2021 - May 2022 (1 year)

Developed and maintained analytical solutions with SQL, Python and Power BI to support data-driven decisions.
Built data pipelines and data processing workflows with SQL Server, SSIS and automations to integrate data across systems.
Optimized databases through query analysis, index creation and job monitoring, which improved efficiency and data availability.
Applied data science techniques, includ

Senior Management Information System Analyst

Algar Tech

Jan 2021 - Apr 2021 (3 months)

Built management reports and RPA solutions with Excel and VBA to automate key performance indicators across teams. Delivered insights that helped optimize operations and resource allocation.

Operations Data Analyst

Digicob

Dec 2018 - Jun 2019 (6 months)

Analyzed performance indicators for the digital collections operation. Built dashboards and reports in Power BI, SSRS and SQL to track strategic KPIs.
Built and maintained data integration processes with SSIS, and scheduled and monitored jobs to automate data loads and operational routines.
Modeled data and optimized SQL queries, including creating and maintaining indexes to improve performance.
U

Data Assistant

Algar Tech

Oct 2017 - Nov 2018 (1 year 1 month)

Supported production planning and performance monitoring for Bradesco's operations. Built Power BI dashboards that improved reporting accuracy and management visibility for the contact center.