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Diogo VianaS

@diogovianas

Finance and Data leader at Cielo who cut product-cost processing from six hours to seven minutes and built near-real-time reporting.

Brazil

Message

At Cielo S.A, I modernized ABC costing systems and developed an internal solution that reduced processing time from six hours to seven minutes and processing costs by 90%. I also led migrations from Oracle to AWS Athena and Databricks, and brought the management cost close forward from D+9 to D+1.

At Fundação Estudar, I built a cloud data and reporting architecture with BigQuery, Metabase, Looker, APIs, and Python. Earlier, at Glass Color Brasil ICL, I developed .NET tools for production planning and pricing that helped reduce rejected inventory by 20%.

Experience

Work history, roles, and key accomplishments

Gerente de Eficiência e Rentabilidade

Cielo S.A

Jul 2023 - Jun 2026 (2 years 11 months)

Led modernization of ABC costing systems, reducing processing time from 6 hours to 7 minutes and cutting processing costs by 90%. Managed migration from Oracle to AWS Athena and Databricks, and led a team of six professionals.

ABC Costing AWSAthena Databricks Oracle Financial Planning P&L management Team Leadership Budgeting Forecasting

Coordenador de Business Performance

Fundação Estudar

Oct 2018 - Jul 2023 (4 years 9 months)

Built cloud-based data and reporting architecture using BigQuery, Metabase, Looker, APIs, and Python. Led finance, management, and data teams, implementing Zero-Based Budgeting and product-level P&Ls with 98% budget accuracy.

BigQuery Metabase Looker Python APIs Data Architecture FP&A zero based budgeting OKRs Cash Flow Management

Coordenador Administrativo-Financeiro

Glass Color Brasil ICL

Sep 2010 - Jan 2018 (7 years 4 months)

Led FP&A, Controllership, and Treasury, overseeing budgeting, forecasting, cash flow, and income statements for directors in Brazil and Mexico. Developed .NET tools for production planning and pricing, contributing to a 20% reduction in rejected inventory.

FP&A Controllership Treasury Budgeting Forecasting Cash Flow .NET Pricing Cost Management FX Exposures

Supervisor Financeiro

Valdemir Celestiano Informática

Nov 2009 - Sep 2010 (10 months)

Led a finance team of 12 professionals, structured internal audit routines, and implemented ERP automations for accounts payable and receivable processes.

Team Leadership Internal Audit ERP Accounts Payable Accounts Receivable Process Automation

Education

Degrees, certifications, and relevant coursework

Universidade São Camilo

Bacharelado, Psychology

Pursuing a Bachelor's degree in Psychology, expected to complete in December 2029.

Insper

Pós-graduação, Data Science and Decision

Grade: 9/10

Completed a postgraduate degree in Data Science and Decision with a GPA of 9/10. Capstone project focused on sequential recommendation systems for e-commerce applications.