Roberto Pereira
Colaborador Open Source at Certili Notas
Goiás, Brazil
Summary
👤
Senior🎓
Top SchoolRoberto Pereira is a seasoned .NET developer and open-source maintainer from Goiás with 11 years of experience building fiscal and commercial automation systems. He founded and leads the Hercules.Net project (100k+ downloads) and contributed extensively to DFe.NET, helping thousands of Brazilian software houses with electronic tax document issuance. Skilled across WPF, Xamarin/MAUI, .NET Core, microservices and React, he focuses on automating complex tax and business processes and implementing robust integrations with SEFAZ and ecommerce platforms. With an MBA in Project Management, he blends hands-on coding with product-minded delivery, having built tax-calculation libraries and cloud-backed microservices for real-world billing systems. Less obvious: Roberto’s contributions often center on evolving XML schemas and data models to support multiple fiscal document versions, showing deep domain expertise in Brazil’s tax tech landscape.
10 years of coding experience
9 years of employment as a software developer
Curso Superior de Tecnologia (CST), Analise e Desenvolvimento de Sistemas, Curso Superior de Tecnologia (CST), Analise e Desenvolvimento de Sistemas at UNIGOIÁS- Centro Universitário de GoiásPós-graduação Lato Sensu - MBA, Project Management, Pós-graduação Lato Sensu - MBA, Project Management at Faculdade São Luis Montes Belos
Stackoverflow
1reputation
2kreached
0answers
1question
Github Skills (10)
xml10
api10
csharp10
apidoc10
dotnet-core10
data-modeling9
json9
primefaces6
datatable6
jsf6
Programming languages (6)
Github contributions (5)
ZeusAutomacao/DFe.NET
Apr 2016 - Oct 2022
Biblioteca para Geração de NFe(2.0, 3.10 e 4.0) e NFCe(3.10 e 4.0) e consumo dos serviços necessários à sua manutenção, conforme descritos em http://www.nfe.fazenda.gov.br/portal/principal.aspx
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 1 review, 912 commits in 6 years 7 months
Contributions summary:Roberto appears to have been focused on the development of CTe (Conhecimento de Transporte Eletrônico) functionality, as evidenced by the frequent changes to data models and data access files related to freight and transportation. Their contributions mainly involve adding attributes, altering XML schemas, and implementing specific features of the CT-e. A significant portion of their work appears to revolve around adjusting data models and structures to support different versions of the CT-e.
govpatchaspxctebiblioteca
AutomacaoNet/MotorTributarioNet
Jul 2017 - Apr 2022
Cálculos de Tributação Brasileira para NF-e CT-e NFC-e Sat-Fiscal
Contributions:4 releases, 146 commits, 13 PRs in 4 years 10 months
fiscalpythonsatpixnfc
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