Javier Loffredo, Developer in Villa Ballester, Buenos Aires Province, Argentina
Javier is available for hire
Hire Javier

Javier Loffredo

Verified Expert  in Engineering

Software Developer

Location
Villa Ballester, Buenos Aires Province, Argentina
Toptal Member Since
April 24, 2018

For the past decade, Javier has been working as a professional developer. He loves working on projects that challenge him and where he can learn new things. Javier mainly develops in PHP using the Symfony framework (lately using 5) and MySQL as the database server.

PHPSymfonySymfony 3PHP 7Symfony 2LinuxMySQLCSSGitjQueryJSONREST APIsHTML5Bootstrap 3JavaScriptPHPUnit

Portfolio

Freelance Work
jQuery, PHP 7, Symfony, Symfony 3, MySQL, PHP, HTML, Symfony 2
Modern Asset Management Inc.
PHP, CSS, HTML, JSON API, JSON, Financial Analysis, Loans & Lending...
Soluciones y Desarrollos Informáticos S.R.L.
PHP 7, Symfony 3, MySQL, PHP, HTML, Symfony 2

Experience

HTML - 14 yearsPHP - 12 yearsMySQL - 12 yearsjQuery - 9 yearsSymfony - 8 yearsSymfony 3 - 7 yearsPHP 7 - 4 yearsSymfony 4 - 3 years

Availability

Part-time

Preferred Environment

Git, PhpStorm, Linux

The most amazing...

...project I've worked on (and still work on) is a site for a local tabletop games community in Argentina; I developed a whole CMS with gamification capabilities.

Work Experience

Web Developer

2017 - PRESENT
Freelance Work
  • Created a CMS with gamification for local boardgame community in Symfony 3.4 with PHP.
  • Developed an API with an integration with different systems and databases in Symfony 3.4 with PHP.
  • Built a CMS for a local company in Symfony 3.4 with PHP.
  • Worked on a local crowdfunding project for innovation technologies with multiple subsystems based on different project types and contests. in PHP, Symfony 2.8 and MySQL.
  • Implemented improvements on an e-learning platform for local schools with multiple schools, subjects, and exam types. Used Symfony 1.4 with the database on DB2; currently, I'm migrating the database to Oracle.
Technologies: jQuery, PHP 7, Symfony, Symfony 3, MySQL, PHP, HTML, Symfony 2

Full-stack Developer

2022 - 2022
Modern Asset Management Inc.
  • Refactored the legacy code into the new Symfony framework using PHP 8 and MySQL8.
  • Integrated a third-party API into the client's system.
  • Documented a third-party API into a Postman project for the client to run tests in both sandbox and production.
Technologies: PHP, CSS, HTML, JSON API, JSON, Financial Analysis, Loans & Lending, Consumer Loans, AutoPal API

Co-owner

2013 - 2017
Soluciones y Desarrollos Informáticos S.R.L.
  • Developed a resource control monitor for Bosch oil machines (PHP, Symfony 2).
  • Built an Android app to check certain sites availability (JAVA).
  • Created a mobile client for Bosch's resource and control monitoring.
  • Developed Augmented Reality App for android for company christmas card using JAVA, Android Studio a Vuforia AR.
  • Improved and updated budgeting system based on SugarCRM (Migrated to SuiteCRM) synchronized with SAP R3 Database.
Technologies: PHP 7, Symfony 3, MySQL, PHP, HTML, Symfony 2

Technical Manager

2010 - 2013
SYDIK
  • Managed projects and coordinated staff.
  • Developed intranet sites in PHP (Symfony 2 Framework).
  • Developed Budget system within SugarCRM with synchronization with an MSSQL database from an ERP. In PHP and MySQL.
  • Developed Price estimation for company in the graphic industry contemplating different Client categories and local taxes. in PHP 5.6 and Mysql.
  • Developed production and warehouse order generator from data obtained from local ERP. in PHP and MySQL.
Technologies: MySQL, PHP, Symfony 2

System Administrator and Tech Support

2004 - 2010
SYDIK
  • Developed a price control app in PHP.
  • Customized a SugarCRM. (PHP 5 and MySQL).
Technologies: PHP

Codesender

https://www.codesender.com
I designed and developed the back end, front end, and REST API to take orders and arrange the retrieval and delivery of card codes to Shopify customers. This included fraud analysis via Nethone's API. In using Symfony, I prepared the site for multi-store usage.

API for Slyde

I developed and documented the API and back-end operations for the ACH payment platform. I also helped design the API and interaction with third-party services such as SILA. API handles multiple user/business levels, KYB and KYC validations, recurrent payments, among other functionalities.

Geek Out!

This site was built for a tabletop community in Argentina. I developed this CMS site (specifically the back end) with user gamification, log plays, a load game library, and a feature where you can gain experience points and achievements.

Shopping Cart and Quote System with Multiple Integrations

PHP Shopping cart was integrated in the .NET site. Quote generation, shipping calculation was done with FEDEX and Liftgate, Integration with GleanView CRM for analytics, storing quotes, and orders. Did tax calculation using Avalara API.

Languages

PHP, PHP 7, CSS, HTML5, JavaScript, HTML

Frameworks

Symfony 2, Symfony, Symfony 3, Symfony 4, PHPUnit, Bootstrap 3

Libraries/APIs

Twitter API, Meetup API, Google API, Facebook API, jQuery, Shopify API, JSON API, REST APIs, AutoPal API

Tools

PhpStorm, Git

Platforms

Linux

Storage

MySQL, JSON

Other

APIs, Financial Analysis, Loans & Lending, Consumer Loans

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring