Cassandra Gelvin
San Diego, CA
| PHP |
JavaScript |
HTML/CSS |
| WordPress |
APIs |
AJAX |
| jQuery |
React |
MySQL/MariaDB |
Web and Software Engineer and Technical Support, Independent Contractor
- Designed and built PHP web application that interfaces with the InfoPlus Warehouse Management System (WMS) to
allow the client more control over their billing process. This includes AJAX feedback to the user and API calls
to the InfoPlus system to pull current client data, as well as Excel exports of generated billing documents using PHPSpreadsheet
- Continual support of billing application and customization InfoPlus system, including writing scripts, filters, and triggers
to enable unusual customer requests as well as troubleshooting any issues that arise
WordPress Developer, Independent Contractor at Agency
- Acting as primary point of contact for the HeatingGreen.com client
and making changes to the site as requested by the client
- For the client BeTheUpside.com, providing troubleshooting and website maintenance
Web Developer, Independent Contractor
- Designed and built a PHP web application that runs on a schedule and synchronizes data between the InfoPlus Warehouse Management
System (WMS) and the Cin7 Inventory Management System
- Designed and built a PHP web application that runs on a schedule and synchronizes data between the Cin7 Inventory Management System
and the Hubspot Customer Relationship Management (CRM) system
WordPress Developer, Independent Contractor
- Planned and recommended modifications to existing setup to enable memberships and gated content on existing site
- Implemented these modifications, including installing and configuring the MemberPress plugin and writing custom plugins to interact
with MemberPress to send SMTP emails and SMS messages via a custom Twilio API integration
- Worked with Advanced Custom Fields (ACF) and custom post types (CPT) to create custom layouts provided by the designer so details
are easily editable by client
WordPress Developer, Independent Contractor
- Designed the curriculum generation pipeline, translating user preferences into structured lesson plans and assessments using the Tutor LMS plugin
- Configured the OpenAI API to return structured JSON data and wrote a custom plugin using Advanced Custom Fields (ACF) and Custom Post Types (CPT)
to convert that data into Tutor LMS courses, lessons, quizzes, and assessments, and additional formats
Web Developer, Independent Contractor
Multiple Clients, 2013-current
- Worked on Upwork and independently. Upwork profile here.
- Developed web applications in HTML, CSS, JavaScript, PHP and MySQL
- Diagnosed and fixed technical issues in WordPress and other systems such as Symfony and PHP that other developers struggled with, including plugin conflicts, AJAX and JavaScript bugs, and CSS layout problems
- Developed multiple calculators: Created calculators with HTML/JavaScript frontends based on provided Excel documents or mathematical functions
- Wrote plugins for Mozilla Thunderbird to restore older functionality and export security certificates
Web Developer, Agency
SiteLab International, San Diego, CA, 2011-2013
- Created cross-browser compatible Drupal, WordPress, Umbraco, and ASP Master Page templates
- Built out both CSS- and table-based layouts for HTML and CSS pages from layered PSDs
- Led projects to convert sites from multiple proprietary content management systems (CMS) to Drupal 7
- Wrote multiple custom modules for Drupal 7
Web Developer, Independent Contractor
EntrePro Corporation/MagCanica, San Diego, CA, 2008-2010
- Worked closely with client to design user-friendly data analysis front-end
- Developed web application in HTML, CSS, JavaScript, and ASP.NET (C#)
- Created and modified stored procedures and user-defined functions (UDF) in Transact-SQL to retrieve data via complex filters
- Enabled realtime database searches via AJAX and ASP.NET WebServices
Web Developer, Agency
Taylor & Pond Corporate Communications, LLC, San Diego, CA, 2003-2005
- Reorganized information architecture and navigation of sites, increasing usability
- Rewrote proprietary CMS templates to rebrand large site
- Led other team members on multiple projects and acted as point of contact for
largest client company
- Created and reworked site templates, Flash files, and Photoshop images to accommodate
challenging layouts such as right-to-left text in Japanese and Hebrew
