Rafael Vieira

CTO @KTGROUP

Brazil🔥 Startup Founder✔️ IT💼 C-level Executive🧑‍🔬 Engineer🧨 ConsultingSystem ArchitectBackend DeveloperFrontend DeveloperSystem AnalystDevOpsProduct ManagerData EngineerSolution IntegratorComputer engineerCTOAdvisorFounderProduct ConsultantDatabase Developer

As Rafael Vieira, the CTO at KTGROUP, I have successfully led the development and execution of strategic tech initiatives, resulting in significant business growth. I have implemented innovative technologies, streamlined operations, and improved system security. My leadership has enhanced team productivity and collaboration, fostering a culture of innovation and excellence. I have also played a key role in digital transformation projects, contributing to the company's competitive edge in the market.

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Network Power<100 people

Roles

💰100%

Investor & VC

🔥100%

Startup Founder

💸100%

Marketing

Geos

🇧🇷100%

Brazil

Work Background

KTGroup TechnologiesCTO | Tax Big Data and Low code products

Dec. 2022São Paulo e Região, BrasilResponsible for the Engineering - Products: Data Pipeline Platform, BPM and Low-Code Platform, Big Data Tax Platform. - All products are related about Taxies, Accountable and Financial process. - Platform Roamap - Finance control of infrastructure Cloud Azure and Partners - Manage and Deliver to internal and external customer requirements. - Control the activities with PDCA methodology - Management of Cloud Team,R&D Team and LGPD Team - Technical reference about Data Science, Big Data e Microservices (Queue-Based Load Leveling pattern) and gRPC Communication. - Languages: Python, NodeJs and C# - Technologies: Trino, Superset, Spark, Typesense, ElasticSearch, MongoDB Atlas, Azure, .NET Core 6, Kafka,Redis/Memcache, Kafka/RabbitMQ/Celery/AWS SQS, container orchestration (Docker Compose/Kubernetes), and CI/CD AzureDevOps

KeepTrueDirector of Engineering and Products

Oct. 2018 - Dec. 2022São Paulo e Região, Brasil- Responsible for the Engineering, Support and Product Teams - Management of Cloud and R&D Team - Technical reference about Data Science, Big Data e Microservices (Queue-Based Load Leveling pattern) and gRPC Communication. - Products: Data Pipeline Platform, BPM and Low-Code Platform, Big Data Tax Platform. - Languages: Python, NodeJs and C# - Technologies: Trino, Superset, Spark, Typesense, ElasticSearch, MongoDB Atlas, Azure, .NET Core 6, Kafka,Redis/Memcache, Kafka/RabbitMQ/Celery/AWS SQS, container orchestration (Docker Compose/Kubernetes), and CI/CD AzureDevOps

Plug and CareCTO

Feb. 2018 - May. 2019São Paulo

Onetech Tecnologia CTO

Apr. 2017 - Oct. 2018São Paulo Area, Brazil- Responsible for Engineering, Architecture and Products. - Product roadmap - Definition of commercial strategy together with the commercial board. - Internal and External Team Management (Projects) - Partnerships: Oracle Scaleup and Accenture - Commercial performance, presentation of products / services and prospecting for new customers. OneSeeYou - IOT -Behavior analysis platform of users in store, application allows identifying users and offering discounts based on the profile. PowerWeb - SFA (Force Automation) - Tool for monitoring external teams, fully dynamic to answer calls, lead flow control (Sales funnel) and order control. - Corporate Social Network and Videoconferencing - Platform created with Mobile First, Event Driven Microservices, Java Android, Objective C and .NET WEB API technologies. OnePay – Payment Gateway - Payment gateway integrated with the main acquirers (BIN, Rede and Cielo), platform created in the concept of event driven microservices, Azure Function, Queue and Azure Sql. eCommerce Marketplace - Product created to serve companies with the objective of intermediating specialized products, integrated with Freight, Anti-fraud and payment companies. - Development in Angular 5, Azure Function and .NET Web API.

Avalara BrasilDevelopment Lead

Oct. 2012 - Apr. 2017- Manage technical resources. - Microsoft Azure Technical Specialist. - Design Architecture for highly scalable process for Tax Monitor. - Development internal Core, BPM and PBEL. - Development CRUD Framework MVC 3/EF5 (runtime CRUD application), based in internal dictionary, .NET 4.5.

Fine ControlCo-Founder

May. 2013 - Oct. 2016São Paulo Area, Brazil- Responsável pelo Produto Monitor NFe - Responsável pelo produto Calendário Fiscal ( Controle de Obrigações) parceira KeepTrue e ActiveIT

Algar TecnologiaApplication Solutions Architect

Apr. 2011 - Sep. 2012o Planning and Execution of Migration Service of mainframe Bull to DB2 o Planning of architecture and technical structure of project o Planning and coordination of tasks o Validation of tecnical resources o Deployment of TFS 2010 using the CMMI process. o Responsible for the development framework of the project. o Technologies Used:.NET 4.0, Json e Jquery, ASP.NET WebForm and WCF

VivancyFree Lancer

Sep. 2011 - Sep. 2011Jogo Quiz para IPAD com Objective C Xcode

ProcworkSoftware Architect / Framework Team Leader

Mar. 2006 - Apr. 2011o Work together with Microsoft to migrate Sonda´s products to Windows Azure platform. o Change Sonda´s Framework to Windows Azure. o Creation of product to update Sonda´s customers, similar to Windows Update. o Development and Planning System to identify the captcha of Receita Federal using neural networks and learning base. o Creation of robot to search for information in external sites and transform XML data to be read by other systems. o Participation in the video release of VS2010 and. NET 4.0 this video was presented in all launch events of the product by Microsoft Brazil. o Development tool for migration for Remoting to WCF and for NET 2.0. to NET 4.0 - Microsoft Metro program. o Development tool for migration projects from earlier versions of TFS to TFS2010. o Presentation of workshops about .NET technology. o Framework. Certifications earned the "Works with SQL Server 2008", "Windows Server 2008", "Windows 7" and "Works With Windows Server 2008 R2." o Development and Planning for the acquisition of certifications for products based on Internal Framework. o Preparation of Landscape and Sizining for product installations. o Responsible for the Framework. Net is today used in all the Sonda´s products, reducing product development time by 40%, the same is used in more than 300 clients with the server and client modules. o Technique Interview to hire new programmers. o Planning the schedule of new features and backlog management. o Coordination Team Framework, product maintenance and planning new features of Framework product. o Technical guidance and design in the development and deployment of products. Net o Provide training on the product Framework and C #. Net 2005. o Development of features: Persistence of data, search for information, report generator, task scheduler, data cache, SOX, Communication between Client and Server, Generator Dynamic screens and other features.

.Net MagazineColunista FreeLancer

Jan. 2007 - Dec. 2008o Edition 36 – How creating Visual Studio 2005 Templates o Edition 38 - Socket Programming with C# Mr. Bool – American Site. http://www.mrbool.com/articles/viewcomp.asp?comp=7243

Hospital Sírio LibanêsSenior Developer, .NET Architect

Jan. 2003 - Feb. 2006o Specification of .Net Architecture. o Errors planning and systems improvement. o Productivity Analysis. o Capacity Planning of Systems and Servers environment. o Technical Interview for new programming. o Planning and Integration of .Net systems. o Accompaniment and support of .net systems in production environment. o Support of programming in .Net Architecture o Development of BI System in .Net o Maintenance of all Hospital’s systems o Development of Medical Lapsing system o Maintenance of HSL Web Site o Development of Drug guide web site in ASP.NET integration with XML Web Services o Development of Tool for database distribution between another databases with VB.NET and MSMQ o Component development with VC++ 6.0 ATL o Windows Services, Serviced Components(COM+) and Windows Applications development with C# and VB.NET o VXML programming for Voice Synthesis o Data Modeling o View / Trigger and Procedures development with Sql and Informix o Pocket PC application development with Wireless communication.

Íon QuimicaSenior Developer - Free Lancer Project

Dec. 2002 - Jan. 2003o ERP development with .NET language. o Modules Developed: Integration of Sales Team, Reports, Customers Base and Product Base. o Technologies Used: ASP.NET with VB.NET, XML WEB SERVICES AND Crystal Reports.

Pentacom IT SolutionsSenior Developer

Oct. 2002 - Nov. 2002o System Maintenance. o Development of new functionalities for Sales workflow o Data Modeling o View / Trigger and Procedures development o Technologies Used: Visual Basic 6, ASP, JavaScript.

CRK Informática Ltda.Developer

Aug. 2001 - Aug. 2002o Clearing (CBLC, Central, Cetip LBTR, Multilateral e Bilateral) development. o Brazilian System Payment (SPB) maintenance o Data Modeling o Components maintenance developed with Visual C++ 6.0 ATL. o Technologies Used: Visual Basic 6, COM+ (Windows DNA), XML, ASP, JavaScript, Sql 2000, BizTalk Sever and MSMQ.

Xerox do Brasil – WA InformáticaDeveloper

Feb. 2001 - Jul. 2001o Application Development to make reading the entries FGTS and conversion to standard CEF bank,this was due to the Brazilian political plan called Summer and Collor Plan, conversion of records to file in standard CEF data to migrating this records to mainframe o Technologies used: Visual Basic 6 and Cobol

Loyds TSB – Sênior SolutionDeveloper

Sep. 2000 - Jan. 2001o Development and maintenance of the LSM System for payment of bounds of Loyds´s customers. o Technologies used: Visual Basic 6 para Componentes COM+, XML, ASP, JavaScript, SyBase.

Net2Net Empresa Paulista de TelecomunicaçõesOperational Manager

Jul. 1999 - Aug. 2000o Technical Team Management o Project Elaboration for ATM Core o Project Planning o Capacity Planning of ATM Core Development o I mediated partner with Lucent, Cabletron and Marconi companies Canadá – Ontário (Toronto) – Comdex 2000 (Empresa: Net2Net)  Business Travel to search new technologies for Brazilian commerce. Argentina – Buenos Aires – Telecom Soluciones S.A. (Empresa: Net2Net)  Learning about ATM technology for implantation in Brazil projects

Bank BBA CreditanstaltSupport Analyst

Jan. 1999 - Jun. 1999o Support on Windows and Office o Support on network equipment and computers

Web BasicsProgrammer Analyst

Aug. 1998 - Dec. 1998o System Developement in ASP, Java Script, Visual Basic 6 for MTS, SQL AND Windows API o Development of Intranet for Embraer and KIBON with Oracle Database and Visual Basic 6

Saga Sistema e ComputadoresSupport Analyst

May. 1997 - Jul. 1998o Network Support, cabling, patch panel, inspection of cable CAT 5 o Setup of switch and managed hubs for Virtual Area Network. o Setup of Routers – Nortel and Cisco with Frame-Relay, ATM protocols. o Management of Windows NT Servers o Installation of SCO Operational System o Installation of network peripherals and computers

PC-DebugProgrammer

Jan. 1996 - Apr. 1997o Developing application for disc system and disc lazer management . (Fox Pro) o Development of system of care, control and schedule appointments (Fox Pro) o System for printing Darf document (Clipper)

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