David Kestering

Senior Technical Architect at FreeBalance
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Contact Information
us****@****om
(386) 825-5501
Location
Greater Belem, BR
Languages
  • Inglês -

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Flávio Salgado

David foi meu líder de equipe e um talentoso programador sênior que tiver o prazer de trabalhar junto. Possui uma capacidade extraordinária em escrever códigos de programação, prezando por boas prática. Realmente é um profissional com espírito de Líder de Equipe, não resta dúvidas!

Rafael Cunha Rodrigues

Excelente profissional, sempre disposto a compartilhar conhecimento e com as entregas de resultados, adquire conhecimento rapidamente e sempre está disposto a novos aprendizados, além de possuir um grande conhecimento no que se propõe fazer, David também tem uma relação interpessoal ótima, tornando o ambiente de trabalho leve e divertido. Foi um prazer ter trabalhado com você, te desejo todo o sucesso parceiro.

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Credentials

  • Level Up - Reality Show
    Layer Lemonade
    Jul, 2023
    - Nov, 2024
  • Motion Design Essencial
    Layer Lemonade
    Jul, 2023
    - Nov, 2024
  • Animação de Personagens
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Aulas da Comunidade
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Design & Ilustra 4 Motion
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Frame a Frame Survival Kit
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Level Up - Reality Show
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Liquid Motion Pro
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Manual do Freelancer
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • O Templo do Blender
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Websérie - Lemonade on The Road
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Websérie - Lemonade on The Road
    Layer Lemonade
    May, 2023
    - Nov, 2024
  • Formação Apache Kafka
    Alura
    Oct, 2021
    - Nov, 2024
  • Formação C# e orientação a objetos
    Alura
    Oct, 2021
    - Nov, 2024
  • Formação SQL com Oracle Database
    Alura
    Oct, 2021
    - Nov, 2024
  • Formação Adobe XD
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação Arquiteto PHP
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação BI e Data Warehouse com SQL Server e Power BI
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação Figma
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação Iniciante em Programação
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação Sketch
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação UX Design
    Alura
    Sep, 2021
    - Nov, 2024
  • Formação Design de Jogos
    Alura
    Aug, 2021
    - Nov, 2024
  • Formação Excel VBA
    Alura
    Aug, 2021
    - Nov, 2024
  • Formação Jogos com Unity
    Alura
    Aug, 2021
    - Nov, 2024
  • Formação Matemática para Programação e Data Science
    Alura
    Aug, 2021
    - Nov, 2024
  • Formação Unreal Engine
    Alura
    Aug, 2021
    - Nov, 2024
  • Formação BI e Data Warehouse com Pentaho
    Alura
    Jul, 2021
    - Nov, 2024
  • Formação SQL com PostgreSQL
    Alura
    Jul, 2021
    - Nov, 2024

Experience

  • FreeBalance
    • Canada
    • Software Development
    • 100 - 200 Employee
    • Senior Technical Architect
      • Nov 2022 - Present

      I use the Pentaho Server suite for dashboard development, in addition to Pentaho Data Integration, Python and Golang for ETL. Saiku plugin for OLAP. I participate in the FreeBalance Business Intelligence architecture development team, helping to control its structure and functioning in different operating systems and databases.

    • Technical Support Specialist | PL/SQL Developer
      • Oct 2021 - Nov 2022

      Using technologies like python, golang and pentaho, with oracle, PL/SQL and sql server databases, I worked to help to migrate accounting data of SEFA’s systems to FreeBalance software. In B.I. we use BIRT (Business Intelligence and Reporting Tools) to create reports and Pentaho Server for dashboards, using SAIKU for data analysis. I am charged to analyze customer issues and requirements and facilitate solutions. Analyze technical requirements and tailor software solution using FreeBalance software. Learn and understand client’s current technical environment and recommend possible modifications to ensure optimum integration with FreeBalance’s products/solutions. Act as primary technical contact for the client during deployment and post-implementation. Understand proposed solution and provide technical expertise in executing same using tools and techniques that are open source based. Complete technical product installations and upgrades, including database and software installs and system tuning. Collaboratively develop and deliver technical training to clients. Show less

  • Techlead IT Solutions
    • Brazil
    • IT Services and IT Consulting
    • 100 - 200 Employee
    • Data Administrator Level 3
      • Jun 2021 - Oct 2021

      I am acting as Oracle's Database Administrator, Data Administrator and Business Intelligence Analyst, located at the Environment and Sustainability State Secretary. Our current projects involve the maintenance of the systems: 1) SIMLAM; 2) SISFLORA; 3) SICAR; Specific Assignments: I perform data analysis, installation, administration, customization and maintenance of Oracle Database; I create database programs (Stored Procedures, Functions, Views, Triggers and Cursors); I perform the development of data integration through ETL using a Pentaho Data Integration (PDI) tool with PL/SQL too. I Perform corrective and preventive maintenance routines, ensuring maximum system performance; I help at the support activities for the test and production environments; I perform Optimize database routines, ensuring high availability, capacity, continuity and security of information systems; I help to Support the IT and Systems team in technical support actions of 1st and 2nd level. Show less

  • Montreal Oficial
    • Brazil
    • IT Services and IT Consulting
    • 700 & Above Employee
    • Project Manager | Tech lead | Senior Systems Analyst | PL/SQL Developer
      • Mar 2021 - Jun 2021

      I am based within the Hospital of Santa Casa de Misericórdia Foundation of Pará, where I manage the team development projects using agile methodologies in the SoulMV software; Our current projects involve the implementation of the systems: 1) Hospitality and Hospital Beds Center; 2) Hospital Infection Control Advisory and Epidemiological Surveillance Center; 3) Management of Sterile Materials Control; 4) Surgical Center and Obstetric Center; 5) Adult Clinic and Specialty Medical Clinic; Specific Assignments: I perform data analysis, installation, administration, customization and maintenance of Oracle Database, besides leading a team of 8 people delegating project development activities creating database programs (Stored Procedures, Functions, Views, Triggers and Cursors). I perform the development of data integration through ETL using a Pentaho Data Integration (PDI) tool with PL/SQL too. I Perform corrective and preventive maintenance routines, ensuring maximum system performance; I help at the support activities for the test and production environments; I perform Optimize database routines, ensuring high availability, capacity, continuity and security of information systems; I help to Support the IT and Systems team in technical support actions of 1st and 2nd level. Show less

  • Alubar
    • Brazil
    • Appliances, Electrical, and Electronics Manufacturing
    • 400 - 500 Employee
    • Data Analyst | T/SQL Developer
      • Jul 2020 - Mar 2021

      I am responsible for translating data analysis strategies into system architectures; To support IT and Systems teams in technical support actions; To create analytical solutions in accordance with the expectations of stakeholders; To design, develop and deliver data analysis solutions; To track and monitor the operation and maintenance of the ERP, SIM, ECM, BI database systems, T/SQL, among others. As well as, support outsourced teams in the development and implementation of changes and improvements in the company's systems. Specific Assignments Analyze, install and configure database systems; Perform corrective and preventive maintenance routines, ensuring maximum system performance; Support the support activities for the test and production environments; Maintain and guarantee the operation of the data replication routine between the different databases; Optimize database routines, ensuring high availability, capacity, continuity and security of information systems; Validate the backup policy of database systems, ensuring the shortest interruption time in case of need for recovery; Maintain control of access and privileges to data, according to the company's security policy; Create users and access to the test or production databases, according to the needs; Manage the system's capacity process, requesting adequate resources to maintain its functioning and projecting future demands for the continuity of a stable operation; Ensure strict compliance with software licensing laws and policies; Perform cleaning, validation, normalization and integration of data in BI systems; Support the IT and Systems team in technical support actions of 1st and 2nd level. Show less

  • Montreal Oficial
    • Brazil
    • IT Services and IT Consulting
    • 700 & Above Employee
    • Tech Lead | Oracle and PostgreSQL DBA | PL/SQL and PHP Developer - Senior Level
      • Aug 2014 - Jul 2020

      I perform data analysis, installation, administration, customization and maintenance of Oracle Database, besides leading a team of 5 people delegating project development activities creating database programs (Stored Procedures, Functions, Views, Triggers and Cursors). We perform monitoring, data auditing and performance analysis of the database and information systems, as well as maintenance of PL/SQL routines and procedures, as well as the implementation of backup and restore policies. We fine-tune database performance and data dictionary maintenance, in addition to modeling the logical and physical data architecture, as well as migrating data between heterogeneous environments, defining SQL queries, and optimizing operations. I do data extraction using extractions tools, transformation and loading (ETL); In Web development, I develop websites and systems using PHP language with Zend or Laravel framework with some raids on AngularJS and NodeJS; In project management we use Mantis, JIRA and BitBucket; In B.I. I perform data management using the best practices in business process management (BPM), with the treatment of the information aiming to provide the understanding and alignment of the organizational processes with the resources involved, I work in the modeling of multidimensional databases using the best practices, DataWerehousing (DW), mapping business opportunities with the customer, implementing ETL routines for database optimization and automation, and managing the conversion of OLTP to OLAP information, to finally develop analysis and construction of indicators and KPIs, using Qlik Sense tool to improve performance and productivity in decision making for the customer's business. Show less

  • UNAMA
    • Brazil
    • Higher Education
    • 700 & Above Employee
    • Oracle's Database Language Teacher
      • Feb 2020 - Jun 2020

      Teacher of Oracle's Database Specialization - Advanced Database Language Discipline. Students learn how to create and maintain database objects, as well as store, retrieve and manipulate data. They even learn how to recover data using advanced techniques, such as cluster operators and related subqueries. They also learn to write SQL script files to automate tasks using an SQL * Plus tool. The fundamental concepts are reinforced by calculations and practical exercises. It is also taught PL/SQL language, where students learn to create and optimize database objects such as Procedures, Functions, Triggers, Cursors, and others Show less

  • Obp TI
    • Belém e Região, Brasil
    • PHP Consultant
      • Sep 2013 - Aug 2014

      I worked coordinating interns teaching classes on PHP Language, installation and configuration of PHP and APACHE. I taught lessons to the development team about the JQuery Language and its use with AJAX. I participated in the development of the following sites and their administrative areas: Sispartido (http://www.sispartido.org) and Maxvoto (http://www.maxvoto.com.br) I worked coordinating interns teaching classes on PHP Language, installation and configuration of PHP and APACHE. I taught lessons to the development team about the JQuery Language and its use with AJAX. I participated in the development of the following sites and their administrative areas: Sispartido (http://www.sispartido.org) and Maxvoto (http://www.maxvoto.com.br)

  • Baroni Online
    • Belém e Região, Brasil
    • PHP Developer - Senior Level
      • Feb 2012 - Mar 2014

      Creation, development, analysis of systems and websites, programming in PHP, Python, Django, PHP Smarty, Mysql, SqlServer, JQuery, Objective-C and iOS, Facebook, Instagram and Twitter APIs. I developed the following sites and their administrative areas: V CRCPA Convention (http://www.crcpa.org.br/Vconvencao/), FIEPA (http://cadind.fiepa.org.br), Sagres Hotel (http://www.hotelsagres.com), Brava Communication (http://www.bravacomunicacao.com), Directex (http://www.directex.com.br), Durval Bezerra (http://www.durvalbezerra.com. br), Mother's Day River Shopping (http://maes.rivershopping.com.br), Women of Vale River Shopping (http://mulheresdovale.rivershopping.com.br), Prisma Communication (http://www.prismapaineis.com.br), Solofix (http://www.solofix.com.br), Bentec (http://www.mmascarello.com/bentec). Show less

  • Inteligent Site
    • Belém e Região, Brasil
    • PHP Developer
      • Jun 2011 - Feb 2012

      Creation, development, analysis of systems and websites, programming in PHP, Mysql, SqlServer, JQuery. I Participated in the development of the following websites and their administrative areas: Educamundo (http://www.educamundo.com.br), Professional Education Focus (http://www.focoeducacaoprofissional.com.br), Study and Training Center (http : //www.centrodeestudoseformacao.com.br), Empowerment Approach (http://www.enfoquecapacitacao.com.br) Creation, development, analysis of systems and websites, programming in PHP, Mysql, SqlServer, JQuery. I Participated in the development of the following websites and their administrative areas: Educamundo (http://www.educamundo.com.br), Professional Education Focus (http://www.focoeducacaoprofissional.com.br), Study and Training Center (http : //www.centrodeestudoseformacao.com.br), Empowerment Approach (http://www.enfoquecapacitacao.com.br)

  • Comtato Digital
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • PHP Developer
      • Jul 2009 - Jun 2011

      Creation, development, systems and websites analysis, project management (XP, SCRUM), PHP programming, Zend Framework 1.8, Mysql, SqlServer, JQuery. I developed the following sites and their administrative areas: CDP - Pará Dock Company (http://www.cdp.com.br), 99FM Radio (http://www.radio99.com.br), Diary FM Radio (http://www.radiodiariofm.com.br), TVRBA (http://www.tvrba.com.br), Status Buildings (http://www.statusconstrucoes.com.br). I participated in the development of the following sites and their administrative areas: DOL – Online Daily Journal of Pará (http://www.diarioonline.com.br), Daily Journal of Pará (http://www.diariodopara.com.br), Paysandu Soccer Team (http://www.paysandu.com.br), Collective Shopping Site Oferta Pai D’égua (www.ofertapaidegua.com.br), Dantas and Amaral (http://www.dantaseamaral.com.br) , Properties and Cia (http://www.imovelecia.net), CRCPA (http://www.crcpa.org.br), Siec School (http://www.siec.com.br), Automate IT (http://automatize.com.br), Trophy Shirt 13 (http://www.trofeucamisa13.com.br). For more references, please access: Portfolio (http://www.comtatodigital.com.br/projetos.php). Show less

  • Bredi
    • Belém e Região, Brasil
    • PHP Developer - Junior Level
      • Feb 2008 - Jul 2009

      Website creation and development, PHP programming, Zend Framework 1, Mysql, Ajax and JQuery. I developed the following sites and their administrative areas: Solidary Group (http://www.groupsolidario.com.br), Image Communication (http://www.imagemcvisual.com.br), Computer Hall and Computer Store (http://www.computerstore.com.br), Mídia in Play (http://www.midiainplay.com.br) and Watercolor Connection School (http://www.conexaoaquarela.com.br). I participated in the development of the following sites and their administrative areas: Bredi Digital IT (http://www.bredi.com.br), Big Ben (http://www.drogariasbigben.com.br), Ice Cream House (http://www.casadosorveteiropa.com.br), PommeDor (http://www.pommedor.com.br), Monaco Group (http://www.grupomonaco.com.br), Consulting Manager (http://www.gestorconsultoria.com.br), Clean Environmental Management (http://www.cleanga.com.br), Alubar (www.alubar.net.br), Impersik (http://www.impersik.com.br), Formare (http://www.formarenet.com.br), Pará Bar Bethlehem Pilot (Pilotage) (http://www.pratbel.com.br), Telsat (http://www.telsat.com.br) and Guama Buildings (http://www.guama.com.br). For more references, please access: Clients (http://www.bredi.com.br/v3/#nav-qc). Show less

  • SEFa-Pa
    • Belém e Região, Brasil
    • Oracle Database Administration Intern
      • Aug 2007 - Feb 2008

      I participated as a DBA intern, assisting in the administration of the Oracle Database 10g, mainly in the routine of surveying the databases instances, controlling the space of the tablespaces and backup. I participated as a DBA intern, assisting in the administration of the Oracle Database 10g, mainly in the routine of surveying the databases instances, controlling the space of the tablespaces and backup.

Education

  • Live University
    Master of Business Administration - MBA, IT Management and Digital Transformation
    2021 - 2022
  • UNAMA
    Post-Graduation Lato Sensu - Specialization in Oracle Database, Oracle
    2017 - 2019
  • Damásio Educacional
    Post-Graduation Lato Sensu - Specialization, Labor Law and Labor Procedure
    2017 - 2018
  • UNAMA
    Bachelor's Degree in Law, Law
    2008 - 2013
  • Instituto Superior de Teologia Aplicada
    Bachelor's Degree in Theology, Theology
    2008 - 2010
  • UNAMA
    Bachelor's Degree in Computer Science, Computer Science
    2003 - 2008

Community

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