Edilson Drumond, Developer in São Paulo - State of São Paulo, Brazil
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Edilson Drumond

Verified Expert  in Engineering

Data Analyst and Developer

São Paulo - State of São Paulo, Brazil
Toptal Member Since
April 27, 2022

Edilson is a data analyst with considerable experience working in fast-growing startups, especially fintech. He combines serious technical knowledge with the business acumen required to produce analyses and projects that help drive decision-making. Passionate about data visualization, he likes to frame data insights in a way that is not only informative but also engaging, stimulating more and better discussions about data.


SQL, Python, Google BigQuery, Data Visualization, Looker, Jira, Confluence
SQL, Python, Apache Airflow, GitHub, Data Analytics, Data Visualization...
SQL, Python, Looker, Amplitude, Apache Airflow, Business Intelligence (BI)...




Preferred Environment

Python, SQL, Microsoft Power BI, Looker

The most amazing...

...project I've devoped was an in-depth analysis of a digital bank acquisition funnel, producing insights used for the improvement of user experience.

Work Experience

Data Analyst

2022 - PRESENT
  • Performed in-depth analysis of discount discrepancies experienced by customers. This investigation allowed not only for a more consistent customer journey but also revealed issues with the way final prices were calculated.
  • Developed a monitoring dashboard for the Logistics team to help give visibility to the order allocation behavior among partners. These visualizations also helped our partners to gather a better sense of how they were performing and where to improve.
  • Developed an impact assessment of a newly developed packaging algorithm. This analysis supported the stakeholders on the decision to focus more efforts on certain types of recommendations while identifying the algorithm was not ideal for others.
Technologies: SQL, Python, Google BigQuery, Data Visualization, Looker, Jira, Confluence

Senior Data Analyst

2021 - 2022
  • Developed and improved the main company report used to track the most relevant metrics related to the achievement of the company's strategic goals.
  • Developed automation for the main company report using Python and Airflow, reducing the required time for updates and allowing other members to take over maintenance.
  • Took more of a leadership role in the team, supporting the other members on how to produce more meaningful and insightful analyses and communicate those findings in a clear and engaging way.
  • Analyzed the company's main trends, showing how performance changed over different products and user cohorts. This helped shift focus to specific cohorts, allowing for improvements in user activation and retention rates by up to 25%.
Technologies: SQL, Python, Apache Airflow, GitHub, Data Analytics, Data Visualization, PostgreSQL, Business Intelligence (BI), Fintech, ETL, Dashboards, Data Analysis

Data Analyst

2020 - 2021
  • Supported the product teams to improve data literacy and data-driven culture by developing Looker and Amplitude dashboards and analyses. Established frequent and open communication for business and data-related discussions.
  • Developed an in-depth analysis of the acquisition funnel that helped highlight several user experience issues, such as handling errors and drops in the biometrics journey. The entire analysis was developed using Python.
  • Highlighted the inefficiencies of the marketing strategy with several analyses and Looker dashboards on the long-term impact of campaigns and related fraud behavior, which led to actions that helped save over $100,000 monthly.
  • Contributed to the development of the analytics team by providing training and support for SQL and Looker, as well as coaching on how to develop insightful and action-driven analyses.
Technologies: SQL, Python, Looker, Amplitude, Apache Airflow, Business Intelligence (BI), PostgreSQL, Data Analytics, GitHub, Data Visualization, Fintech, Dashboards, Data Analysis

Data Analyst

2019 - 2020
  • Developed several ETL processes used in analysis and Power BI dashboards. These Alteryx workflows consumed data from several sources, mainly the company database and data files extracted from the credit recovery CRM.
  • Constructed several Alteryx data pipelines for a data quality project, working on every step from data collection, validation, and creation of Power BI dashboards to allow management to track inconsistencies and act upon them.
  • Participated in developing a forecast model for the department's financial results, also devising strategies to act when the forecast differed from the company goals. This project was mainly developed using Alteryx machine learning tools.
Technologies: Alteryx, SQL, Python, Microsoft Power BI, Business Intelligence (BI), Data Analytics, Data Visualization, Fintech, ETL, Dashboards, Data Analysis

Investigation and Predictive Analysis of COVID-19 Patients Admitted in ICU

This is a two-part data investigation of COVID-19 patients admitted to the ICU. The first part consisted of an in-depth process of cleaning, transforming, and exploring data to better understand the context and opportunities that could be further explored.

In the second part, several machine learning algorithms were applied to predict users' future conditions with two distinct approaches. The first one considered only the measurements taken right after the patient was admitted to the hospital and tried to predict the likelihood of UCI treatment being necessary. In the second approach, the same prediction was made using data from the two most recent measurements, taking advantage of the change over time to produce more accurate predictions.
2020 - 2022

Professional Degree in Data Science

Pontifical Catholic University of Minas Gerais - Minas Gerais, Brazil

2015 - 2017

Master's Degree in Chemical Engineering

Federal University of Ceará - Fortaleza, Brazil

2009 - 2014

Bachelor's Degree in Chemical Engineering

Federal University of Ceará - Fortaleza, Brazil


Data Modeling Track



Machine Learning Track





Looker, Microsoft Power BI, Apache Airflow, Git, GitHub, Jira, Confluence


SQL, Python, Fortran, Pascal


Business Intelligence (BI), ETL


Alteryx, KNIME, Linux


Relational Databases, PostgreSQL, NoSQL


Data Analytics, Amplitude, Data Visualization, Fintech, Dashboards, Data Analysis, Machine Learning, Software Development, Programming, Google BigQuery

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