Leandro Costa
@leandrocosta
Senior Data Analyst turning complex datasets into measurable business ROI.
BrazilWhat I'm looking for
I’m a results-oriented Senior Data Analyst with over 5 years of experience in the financial and payment services sectors. I specialize in transforming complex datasets into strategic business outcomes through Analytics Engineering and high-performance Big Data processing.
In my current role at CIELO, I serve as the primary analytical lead across cross-functional workstreams, translating ambiguous questions into production-grade data products and dashboards. I architect large-scale PySpark pipelines in Databricks, improving processing efficiency by 95%, and I use AI tools plus Jira REST APIs to automate reporting—saving 6 manual hours per week.
Previously at BANCO SAFRA, I partnered with Private Banking executives to deliver growth impact, including a $3M revenue increase driven by advanced clustering. I also refactored legacy ETL into incremental models, cutting cloud cluster costs by 30% while maintaining 100% data reliability, and I mentored junior analysts on SQL performance, documentation, and dimensional modeling.
Experience
Work history, roles, and key accomplishments
Senior Data Analyst
Cielo
Feb 2026 - Present (3 months)
Architected large-scale PySpark pipelines in Databricks, improving processing efficiency by 95%, and led cross-functional work by translating ambiguous business questions into production-grade dashboards and data products. Built an automated reporting system via Jira REST APIs, saving 6 manual hours per week for the executive team.
Mid-level BI Analyst
Banco Safra
Jul 2024 - Jan 2026 (1 year 6 months)
Partnered with Private Banking executives to identify growth opportunities, developing a B3-based clustering model that generated $3M in new investments. Refactored legacy ETL into incremental models, reducing cloud cluster costs by 30% while ensuring 100% data reliability and mentoring junior analysts on SQL performance and dimensional modeling.
Junior BI Analyst
Banco Safra
Jul 2023 - Jul 2024 (1 year)
Designed strategic dashboards for the Pension department, reducing reporting lead time by 5 hours per week and enabling real-time portability tracking. Migrated manual SQL workflows to Python/PySpark on Cloudera, reducing average cloud costs by 25%.
Process Automation Intern
Itaú Unibanco
Jan 2021 - Sep 2021 (8 months)
Developed and maintained RPA bots using Python to automate back-office workflows, with a focus on internal controls and data integrity. Supported operational efficiency improvements by strengthening automated execution of business processes.
Education
Degrees, certifications, and relevant coursework
University of Campinas (UNICAMP)
Postgraduate, Data Science & Artificial Intelligence
Postgraduate studies in Data Science & Artificial Intelligence at UNICAMP, expected completion in 2027.
University of São Paulo (USP)
Bachelor of Science, Information Systems
B.S. in Information Systems at the University of São Paulo (USP) (year noted: 2024).
Availability
Location
BrazilAuthorized to work in
Job categories
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