Logo de FreelancerCómo funcionaBusca trabajos Iniciar sesión Registrarse Publica un proyecto
EXPLORAR
C# Programming HTML MySQL PHP SQL Profile cover photo
Ahora estás siguiendo a .
Error al seguir a usuario.
Este usuario no permite que los usuarios lo sigan.
Ya estás siguiendo a este usuario.
Tu plan de membresía solo permite 0 seguimientos. Mejora tu membresía aquí.
Dejaste de seguir correctamente al usuario.
Error al dejar de seguir al usuario.
Has recomendado exitosamente a
Error al recomendar al usuario.
Algo salió mal. Por favor, actualiza la página e intenta de nuevo.
Email verificado correctamente.
Avatar del usuario
 $15 USD / hora
Bandera de VENEZUELA
maracaibo, venezuela
$15 USD / hora
La hora actual es 9:23 p. m.
Se unió noviembre 23, 2020
1 Recomendación

Efraín José R.

@niarfedevelop

monthly-level-two.svg
 4,6 (50 comentarios)
5,4
5,4
$15 USD / hora
Bandera de VENEZUELA
maracaibo, venezuela
$15 USD / hora
91 %
Trabajos finalizados
88 %
Dentro del presupuesto
90 %
A tiempo
17 %
Tasa de recontratación

EXPERT IN SOFTWARE DEVELOPMENT / BACKEND /DBA

More than 15 years of experience. Database modeling and creation specialist, RestFul Api creation, SQL query optimization, management of NoSql data managers. Expert in SQL, PL/SQL. Database developer. Expert in data replication MYSQL SERVER and MARIADB SERVER, master-master, master-slave and Multi-source replication (several masters a single slave). Extensive Experience Development and Maintenance of Desktop Systems (PRODUCTION, INVENTORY, PURCHASES, SALES, PAYMENTS, ACCOUNTING, BANK CONCILIATION, PROCESS CALCULATION OF PRICES BASED ON COST MANAGEMENT, AMONG OTHERS). Extensive Experience Development and Maintenance of Websites. Expert in Point of Sale System. Experience in implementation of fiscal printers (Bixolon Srp 270, Bixolon Srp 350, Bixolon Srp 812, Tally, Okidata, among other printer models) More than 10 years of experience working with ERP (Example : ERP Adaptapro Venezuela) Expert in Odoo System, Dolibarr, I provide the support service for new adaptations, implementations, maintenance, among others. Payroll system experience, fingerprint capture system. Expert in creating all kinds of reports with CRYSTAL REPORT, PHP, JAVA, among others. JAVA PHP JSP PYTHON (PyChart, Qt Designer) NODEJS LOOPBACK TYPESCRIPT REACT C# BLAZOR SERVER RADZEN BLAZOR COMPONET VISUAL BASIC 6.0 DELFI VB.NET HTML XML JAVASCRIT BOOTSTRAP CSS MS ACCESS MYSQL SERVER POSTGRESQL MARIADB SQL SERVER ORACLE MONGODB SQL, PL/SQL CRYSTAL REPORT UML WORDPRESS DOMPDF
Freelancer MySQL Developers Venezuela
Ver todo MySQL Developers en Venezuela

Contacta a Efraín José R. acerca de tu trabajo

Inicia sesión para conversar sobre cualquier dato mediante el chat.

Elementos del portafolio

Convertidor de Bases Numéricas con JAVASCRIPT, HTML, CSS y BOOTSTRAP.
Convertidor de Bases Numéricas con JAVASCRIPT, HTML, CSS
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
C# application with TXT files for enrollment process and payment of student fees
C# Application With TXT Files for Registration Process
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Development of application for inventory of pipes per unit and cuts, using PHP 8.0, MARIADB 10.5, JAVASCRIPT, JQUERY, AJAX.
Simple Web Application for Inventory Management
Creation of application with user authentication by levels, CRUD and sending of mail when registering the user. Visual studio 2019 was used with VB.NET and ACCESS and GMAIL email account for sending mail via SMTP.
Authentication with VB.NET and Access user levels, send Mail
Creation of application with user authentication by levels, CRUD and sending of mail when registering the user. Visual studio 2019 was used with VB.NET and ACCESS and GMAIL email account for sending mail via SMTP.
Authentication with VB.NET and Access user levels, send Mail
Creation of application with user authentication by levels, CRUD and sending of mail when registering the user. Visual studio 2019 was used with VB.NET and ACCESS and GMAIL email account for sending mail via SMTP.
Authentication with VB.NET and Access user levels, send Mail
Creation of application with user authentication by levels, CRUD and sending of mail when registering the user. Visual studio 2019 was used with VB.NET and ACCESS and GMAIL email account for sending mail via SMTP.
Authentication with VB.NET and Access user levels, send Mail
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
Application in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen Blazor Componet, C #, HTML, Bootstrap.
App in Bazor Server, .NET 5.0, Dapper, SQL SERVER, Radzen
An entity relationship diagram (E-R) was created based on a given statement and then the E-R was converted to a relational model, DIA software was used.
Entity Relationship Diagram (E-R) and Relational Model
An entity relationship diagram (E-R) was created based on a given statement and then the E-R was converted to a relational model, DIA software was used.
Entity Relationship Diagram (E-R) and Relational Model

Comentarios

Cambios guardados
Mostrando 1 - 5 de 50+ reseñas
 Filtrar reseñas por: 5,0
$100,00 USD
control de inventarios en accesss
Logramos hacernos entender, fue amable y obtuve el resultado que queria.???
SQL Microsoft Access MySQL
Avatar del usuario
Bandera de Ixchel B. @baezixchel
•
hace 18 días 5,0
$90,00 USD
Control de Contratos
Entendió rapidamente las directivas del trabajo, aportó ideas y generó iniciativa. Una vez comenzado, todo fue normal y de acuerdo a las expectativas.
PHP phpMyAdmin
Avatar del usuario
Bandera de Jorge P. @JCP67
•
hace 1 mes 5,0
€35,00 EUR
Manage a database with phpMyAdmin and implement a CRUD application in PHP. // Gestionar una base de datos con phpMyAdmin e implementar una aplicación CRUD en PHP.
Es un gran profesional, entiende 100% lo que está haciendo y se comunica genial. Ha sido un placer!!
PHP SQL Software Architecture MySQL Database Programming
T
Bandera de Marc C. @tomeuquely33
•
hace 4 meses 5,0
$30,00 USD
SQL ajustes
Amazing n freelancer, super friendly and willing to help you out and understand every aspect of your inquiries. He is very easy to talk to and super professional, overall a great experience to work with him. The knowledge that he has is really valuable :)
SQL MySQL Database Administration Database Programming Microsoft SQL Server
Avatar del usuario
Bandera de Angie B. @angiebrc2209
•
hace 4 meses 5,0
$25,00 USD
Modificar tipo de impaginacion
Excelente programador, profesional, sin dudas volvere a trabajar con el. Recomendado 100%. Amplios conocimientos en programacion.
PHP JavaScript CSS MySQL HTML
Avatar del usuario
Bandera de Victor C. @chaskito
•
hace 4 meses

Experiencia

Backend / DBA / Consultant Adaptapro ERP Open Source

Personal
ene 2017 - Presente
Actualmente trabajo independiente emprendiendo con mi propia empresa de sistemas.

Backend / DBA

TECNOLOGIA ADELFUS, C.A.
mar 2016 - ago 2017 (1 año, 5 meses)
Database modeling (mysql workbench), database implementation (relational and non-relational, creation of RestFul and Soap services api, use of StrongLoop framework (NodeJS), django (Python), non-SQL data managers: ( MongoDB, Redis) and relational: (Mysql Server, PostgreSQL, and SQL Server) Management of repositories with GIT, use of Scrum methodology (Target Process).

Adaptapro ERP Consultant

Independent
dic 2014 - feb 2016 (1 año, 2 meses)
Customer Service Provider with ERP Adaptapro. Development, implementation and improvement projects for clients.

Educación

Informatics Engineer

Universidad del Zulia, Venezuela 2013 - 2016
(3 años)

Higher University Technician

Universidad del Zulia, Venezuela 2006 - 2009
(3 años)

Contacta a Efraín José R. acerca de tu trabajo

Inicia sesión para conversar sobre cualquier dato mediante el chat.

Verificaciones

Freelancer preferente
Identidad verificada
Pago verificado
Teléfono verificado
Email verificado
Facebook conectado

Principales habilidades

MySQL 33 PHP 30 SQL 21 C# Programming 17 HTML 12

Explorar freelancers similares

MySQL Developers in Venezuela
MySQL Developers
PHP Developers
SQL Developers

Explorar galerías similares

MySQL
PHP
SQL
C# Programming
Usuario anterior Usuario siguiente
¡Invitación enviada correctamente!
Logo de Freelancer
 Spain / Español
Ayuda y soporte
Freelancer Categorías Proyectos Concursos Freelancers Empresa Membresía Programa de Freelancers Preferentes Gestión de Proyectos Trabajos locales Foto en cualquier lugar Galería API para desarrolladores Verifícate Aplicación de escritorio Información Quiénes somos Cómo funciona Empleos Seguridad Inversionista Mapa del sitio Historias Noticias Equipo Adjudicaciones Comunicados de prensaEmpleos Términos Política de privacidad Términos y condiciones Política de Copyright Código de conducta Cargos y tarifas Socios Escrow.comLoadshiftWarrior Forum Apps Logo de "App Store" de AppleLogo de Google Play
Falló el copiado al portapapeles. Intenta de nuevo después de ajustar tus permisos.
Copiado al portapapeles.
Usuarios registrados Total de empleos publicados
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2023 Freelancer Technology Pty Limited (ACN 142 189 759)
Cargando visualización previa
Permiso concedido para Geolocalización.
Tu sesión de acceso ha expirado y has sido desconectado. Por favor, inica sesión nuevamente.