L

Leonardo Santos

About

Detail

Minas Gerais, Brazil

Timeline

work
Job
school
Education

Résumé

Jobs verified_user 0% verified
  • S
    Software Engineer
    Space Sales (CRM SaaS)
    Jul 2025 - Dec 2025 (6 months)
    Led the end-to-end development of a multi-tenant CRM SaaS platform, defining system architecture and data models.Built RESTful APIs using Node.js, TypeScript, Express, and JWT-based authentication.Delivered frontend interfaces to support lead and sales workflows, integrated with backend services.Designed and optimized PostgreSQL schemas, focusing on performance, tenant data isolation, and scalable data models.Deployed and maintained production environments on Heroku and cloud services, using Docker for local development.
  • Db
    Data Engineer
    Db
    Aug 2024 - Jul 2025 (1 year)
    Designed and developed ETL pipelines in Databricks using PySpark and SQL for industrial and supply chain analytics.Migrated legacy operational data from SAP and SQL Server into a modern lakehouse architecture.Implemented bronze, silver, and gold data layers following lakehouse and data engineering best practices.Collaborated with manufacturing and supply chain teams to deliver actionable datasets for shop floor operations.Ensured data quality, validation, and consistency across business-critical operational datasets.Worked fully within the Databricks ecosystem, leveraging notebooks, jobs, and Git-based version control in production pipelines.
  • 2
    Data Engineer
    2RP Net
    Nov 2021 - Aug 2024 (2 years 10 months)
    Developed and maintained PySpark and SQL pipelines for credit, fraud, and collections analytics in a large-scale financial environment.Built and orchestrated batch data workflows using Apache NiFi, Airflow, Hive, and Impala in a Cloudera-based environment on OCI.Supported data ingestion and API integrations, handling authentication, JSON payloads, and production incident resolution.Participated in end-to-end data projects, collaborating with analysts, stakeholders, and client teams in Agile environments.Contributed to a large-scale cloud migration to GCP, focusing on data validation, consistency checks, and pipeline reliability.
  • P
    IT Coordinator
    Prefeitura Municipal de Muzambinho
    Jan 2019 - Dec 2020 (2 years)
    Acted as the sole IT responsible for multiple public healthcare units, ensuring system availability and operational stability.Led the implementation and ongoing maintenance of the e-SUS EHR system across primary care facilities.Trained and supported healthcare professionals, improving adoption and day-to-day use of digital health systems.
  • P
    IT Support, Intern
    Prefeitura Municipal de Muzambinho
    Apr 2017 - Dec 2018 (1 year 9 months)
    Maintained computers in the public health sector and assisted in resolving daily technical issues and IT support requests.
Education verified_user 0% verified
  • I
    Bachelor of Science
    IF Sul de Minas
    Jan 2015 - Dec 2018 (4 years)
    Computer Science