Open to opportunities

Leonardo Santos

@leonardosantosdev

Message

Data engineer and full-stack developer specializing in cloud pipelines.

Brazil

Message

What I'm looking for

I seek roles where I can build reliable data platforms and end-to-end applications, collaborate cross-functionally, work with cloud-native tools, and grow into technical leadership while prioritizing data quality and production reliability.

Software Engineer with professional experience in Data Engineering and full-stack development, working on production systems across data platforms and web applications.

Over the past years, I have designed and maintained data pipelines using technologies such as PySpark, Databricks, Airflow, and distributed data ecosystems, supporting analytics and business-critical workflows. I have also built and maintained end-to-end web applications, including a CRM SaaS platform, covering backend APIs, data modeling, frontend development, and cloud deployment.

I am comfortable working in complex environments, collaborating with cross-functional teams, and taking ownership of systems from design to production, with a strong focus on reliability, scalability, and practical problem-solving.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Space Sales

Jan 2025 - Present (1 year 1 month)

Led end-to-end development of a multi-tenant CRM platform (backend, frontend, data modeling), built RESTful APIs and responsive UIs, and deployed production environments improving platform stability and tenant isolation.

TypeScript Express React PostgreSQL Docker Heroku REST APIs

Data Engineer

Aug 2024 - Jul 2025 (11 months)

Designed and developed Databricks ETL pipelines in PySpark/SQL, migrated legacy SQL Server data into a lakehouse, and implemented bronze/silver/gold layers to deliver validated analytics datasets.

Databricks Pyspark SQL ETL Data Quality Notebooks Version Control

Data Engineer

2RP Net

Nov 2021 - Aug 2024 (2 years 9 months)

Developed and maintained PySpark and SQL pipelines for credit, fraud, and collections analytics; orchestrated batch workflows with NiFi and Airflow and supported a large-scale cloud migration to GCP.

Pyspark SQL Apache NiFi Airflow Hive Impala GCP Cloudera Data Ingestion

IT Coordinator

Prefeitura Municipal Muzambinho

Jan 2019 - Dec 2020 (1 year 11 months)

Served as sole IT lead for multiple public healthcare units, implemented and maintained the e-SUS EHR system, and trained staff to improve digital health system adoption and availability.

IT Support EHR System Administration Training Linux HelpDesk+