Open to opportunities

Guido Tognini

@guidotognini

Message

Data engineer specializing in scalable ETL pipelines, PySpark, Databricks, and data-driven business impact.

Brazil

Message

What I'm looking for

I seek a data engineering role where I can build scalable ETL pipelines, automate data quality, collaborate with stakeholders, and deliver measurable business impact while growing technically.

I am a Data Engineer focused on building scalable ETL/ELT pipelines and reliable data platforms using SQL, Python and PySpark in Databricks. I design data models, implement automated data quality tests, and integrate APIs to deliver timely analytical datasets that support business decisions.

In recent roles I engineered and refactored pipelines that materially improved performance and business outcomes — reducing runtime from hours to minutes and enabling a 20%+ uplift in higher-value customer acquisition. I introduced Git-based workflows and automated validations to increase code reliability and data trust.

I bring hands-on experience with cloud orchestration, Delta Lake/Medallion architectures, and stakeholder-focused reporting. I seek to apply pragmatic, scalable solutions that align technical design with measurable business impact.

Experience

Work history, roles, and key accomplishments

Current

Data Engineer

Current

Banco do Brasil Media Hub

Dec 2024 - Present (1 year)

Engineered Databricks ETL pipelines with PySpark and SQL integrating APIs and automated validations, driving a 20%+ uplift in higher-value customer acquisition and reducing a core reporting runtime from 5 hours to 10 minutes.

Pyspark SQL Databricks Delta Lake API Integration Data Modeling Azure DevOps Git

Analytics Engineer

Shopee

Apr 2024 - Dec 2024 (8 months)

Automated ETL pipelines with SQL and Python and delivered stakeholder dashboards and a workflow management panel, improving reporting efficiency and accelerating access to actionable insights across three business teams.

SQL Python Data Modeling Looker Google Sheets ETL Orchestration Ingestion

Business Analyst

Flora Energia

Mar 2021 - Nov 2022 (1 year 8 months)

Led CRM migration while maintaining data quality and reducing costs by over 30%, and created Excel-based sales dashboards to monitor funnel performance and guide strategy refinement.

Data Quality Excel Dashboards Ploomes

Data & Reporting Intern

MetLife

Dec 2019 - Jan 2020 (1 month)

Built Excel tools and KPI dashboards to evaluate third-party legal team performance, improving measurement and reporting accuracy for operational reviews.

Excel KPIs Data Analysis Reporting

Sales Data Intern

Zettle by PayPal

Feb 2019 - Jul 2019 (5 months)

Automated reporting workflows with Excel VBA and Looker dashboards, optimizing visibility into sales operations and reducing manual reporting effort.

VBA Looker Sales Analytics Dashboarding

Education

Degrees, certifications, and relevant coursework

University of São Paulo

Bachelor of Business Administration, Business Administration

2017 - 2023

Completed a Bachelor of Business Administration at the University of São Paulo with coursework supporting data analysis, reporting, and business processes.