Cleyton P.

Data Scientist working on audit case selection and taxpayer compliance. Mainly using Python and SQL (Big Data) to apply data mining techniques to better understand, process and draw conclusions from vast amounts of information. 2019 – 2021: Lead of the Audit Case Selection Team, which was composed of 32 members (remote). 2017 – 2019: Head of the Tax Collection Division, which was composed of 230 members (local and remote). 2012 - 2014: Project Manager responsible for the creation of the Brazilian government website "Portal Único Siscomex" (https://portalunico.siscomex.gov.br/) based on the "single window" approach, aiming to create an information technology system through which foreign trade operators and actors can forward documents or data required by the government for export and import, or transit of goods, to a single point of entry accessible via the Internet.

Responsible for software development and design of new features for the User Equipment Handling (UEH) subsystem of Ericsson's Radio Network Controller (RNC). The role required advanced software development skills along with a strong knowlegde in telecommunication, namely RAN protocols (RRC, NBAP and RNSAP) and procedures (Soft handover, Cell Update, IRAT handover, Channel Switch, etc). Main assignments: – C/C++ programming using Rational Rose Real Time – Troubleshooting / Bug fixing – Clearcase for version control – Solaris and Windows Operating Systems – Creating Software Design Specifications for new features (e.g. VoIP and Rab Modification) – Leading software development teams (usually from 5 to 10 people). – Cost and effort estimation