Oscar C. Profile

4.7

(16 reviews)

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$26 USD / hour

santa tecla,

el salvador

$26 USD / hour

It's currently 4:32 AM here

Joined October 17, 2013

2 Recommendations

Oscar C.

@ocalderon

4.7

(16 reviews)

5.1

100%

$26 USD / hour

santa tecla,

el salvador

$26 USD / hour

94%

Jobs Completed

100%

On Budget

75%

On Time

36%

Repeat Hire Rate

Full Stack Engineer

Full Stack Engineer with 10 years of experience overall working in a wider range of industries. My focus and main goal is to bring my clients a unique experience by providing high quality Software Services. I have a strong expertise in building enterprise applications from design to implementation, from A to Z. UI Design? Backend & Frontend development? Iplementation? SysAdmin? I'm an expert on it. I have proven experience in JAVA and Javascript languages. 6 years of experience in JAVA supports me and 4 years working with Javascript frameworks in both Frontend and Backend. ReactJS and all its ecosystem is what i use on my daily basis in order to make user experience unique.

See all React.js Developers in El Salvador

Contact Oscar C. about your job

Portfolio

1764269

Connection pool in JBoss 7.1/Wildfly 8.2

1764255

Changing beans.xml filename in Spring MVC

1764269

Connection pool in JBoss 7.1/Wildfly 8.2

1764255

Changing beans.xml filename in Spring MVC

Reviews

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Showing 1 - 5 out of 16 reviews

Filter reviews by:

5.0

€544.00 EUR

Backoffice web admin with react.js controls

Oscar es una persona, amable, dispuesta y buen profesional. Recomendado.

Fernando D.

@fdelcano

•

6 years ago

5.0

$655.00 USD

Crear una aplicación para Android

Great developer! Thanks.

Java

Mobile App Development

Android

Pedro L.

@plizondo

•

7 years ago

5.0

$100.00 USD

Project for ocalderon

Gracias Oscar por tu colaboración. Espero que podamos seguir trabajando juntos.

Java

JavaScript

Software Architecture

HTML5

+1 more

Ricardo T.

@RicardoTrejos

•

7 years ago

5.0

$133.00 USD

Write some Software

Gran trabajo y comunicación con Oscar. Seguro tendré más proyectos con el.

JavaScript

React.js

Ricardo T.

@RicardoTrejos

•

7 years ago

4.2

€244.00 EUR

Web-based editor of structured texts

Overall I was happy with the quality of the work delivered. I highly appreciated the quality of communication during the project. Oscar was regularly reporting about the progress of the work and asking right questions whenever needed. From technical perspective, I find the implementation in ReactJS+Redux to be up to current standards, with a well readable code and good code organization. Unfortunately the project took more time than originally expected. The reasons were communicated and we decided to continue with the project, but it I imagine it could have become on issue had the project been on a tight schedule.

Petr S.

@sobeslavsky

•

7 years ago

Experience

SAPLIC

Jun 2014 - Aug 2014 (2 months, 1 day)

Private JEE training for government employees during 3 months during night, after work hours. Starting from basic JAVA syntax, data types, loops, following to JEE web development using Servlets & JSP and after that, Spring MVC, Spring DI and Spring Security. Finally I taught them JSF development using Mojarra 2.0 and PrimeFaces 5.0, running on Wildfly 8.

Personal

May 2014 - Jul 2014 (2 months, 1 day)

An android app about personal spending and incomes management developed for a single user. The app lets you create accounts like pocket, credit card, savings account; and after that register incoming and spending movements that affect one or various accounts. The app also has a wide variety of reports using bar graphs or pie graphs. It was developed using Eclipse Kepler IDE, compatible with Android 14 y 19 and designed for smartphones and tablets (using Fragments).

SAPLIC

Jan 2014 - Apr 2014 (3 months, 1 day)

In this project I developed some modules but also I managed 3 JAVA developers by assigning requirements and also create the Gantt diagram for Project monitoring and resource management. This application was for an agro service, with Inventory module, Point Of Sale, Invoices and a lot of sales reporting, like sales per branch, sales per product, sales per product categories, earnings based on product sales prices. It has support for manage multiples prices per product according to clients. It was developed using Spring MVC 4.0 and JSP with Velocity with PostgreSQL 9.3 database through Hibernate JPA, running on JBoss AS 7.1 on CentOS 6.5 x64

Education

Project Management Master

El Salvador

2014

(Less than a year)

CS Engineer

Universidad 'Francisco Gavidia',

El Salvador

2005 - 2011

(6 years)

Qualifications

Oracle

2017

Validates knowledge of developers about the most deep features about JAVA 8 programming language

EnterpriseDB

2014

The PostgreSQL Associate Certification assesses and certifies a database professional to demonstrate the fundamental skills necessary to maintain and manage a PostgreSQL server and applications in a production environment.