Guilherme Xavier

Building scalable data products with simple architecture and measurable outcomes.

Senior Data Engineer | Building Scalable GCP & Snowflake Platforms | Reducing Compute Costs & Automating Workflows | Python, dbt, GenAI

Portrait of Guilherme Xavier

15%

Compute Cost Reduction

65%

Query Performance Increase

80+

Manual Hours Removed Weekly

3M+

Events Processed Daily

Selected Experience

Mission Lane · Senior Data Engineer

June 2024 - Present

Migrated legacy Dataproc jobs to Airflow + dbt, reduced compute costs by 15%, and improved query performance by 65%.

Automated onboarding for 15+ debt settlement partners into a centralized data platform supporting $700K+ in monthly revenue.

Built Snowflake streaming and Pub/Sub integrations across 30+ pipelines to enable real-time decisioning and operational analytics.

Nelogica · Data Engineer

January 2022 - April 2024

Built and scaled 100+ Airflow pipelines and real-time ingestion services handling 3M+ events per day.

Designed an in-house communications orchestrator processing 70K+ daily messages, reducing third-party costs by 65%.

Managed a 5TB OpenSearch cluster and delivered 50+ dashboards for operational monitoring and analytics.

MG Info · Data Engineer

June 2021 - January 2022

Led migration of 50 on-premises sources (10TB) to Azure and improved performance by 40% with Delta Lake architecture.

Developed 20 pipelines in Azure Data Factory, Synapse, and Databricks integrating SQL Server, REST APIs, and SharePoint.

Established CI/CD practices across 5 repositories, reducing deployment time by 10% and improving release quality.

Main Stack

  • Python
  • SQL
  • Snowflake
  • dbt
  • Airflow
  • Spark
  • Google Cloud
  • AWS
  • Kubernetes
  • GenAI

Certifications

SnowPro Core Certification

Snowflake · Issued Apr 2025 · Expires Apr 2027

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AWS Certified Data Engineer - Associate

Amazon Web Services · Issued May 2024 · Expires May 2027

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