Victor is available for hire

Victor Castrejon

Verified Expert in Engineering

Software Developer

Location

Hermosillo, Mexico

Toptal Member Since

October 3, 2019

Victor has more than 15 years of experience working as a web developer and is a pioneer in adopting front-end technologies. With pixel-perfect UI development, he focuses on semantic HTML, reusable CSS, and accessibility for all of his projects. He also has very good experience with JavaScript frameworks like React or Angular.

User Interface (UI)User Experience (UX)Responsive UI Accessibility HTML5 CSS Flexbox Sass JavaScript Tailwind CSS Webpack UI Testing UI Audits WordPress MySQL

Portfolio

True Tickets

Svelte, HTML, Semantic HTML, CSS, Tailwind CSS, Flexbox, JSS, WCAG 2...

CSAA

Redux, Sass, CSS3, React, JavaScript, Responsive Design, Responsive UI...

True Colors LLC, August 2018 - April 2019

React, WordPress, Flexbox, HTML5, Sass, Tailwind CSS, Responsive Design...

Experience

CSS - 20 years Prototyping - 20 years HTML5 - 20 years CSS3 - 20 years User Experience (UX) - 10 years React - 5 years Accessibility - 4 years WCAG 2 - 4 years

Availability

Full-time

Preferred Environment

Visual Studio Code (VS Code), Git, Accessibility, CSS, HTML, Responsive Design, Web UX Design

The most amazing...

...project I've created by myself was a web-based point of sale system for a retail store with branches in more than 20 cities.

Work Experience

Senior UX Developer

2020 - PRESENT

True Tickets

Developed a ticket wallet application that, until March 2023, has registered more than 100,000 tickets.
Enabled the app to be 100% accessible, as it complies all the Web Content Accessibility Guidelines (WCAG) and is tested using screen readers.
Employed the app in more than 30 venues in three different countries.

Technologies: Svelte, HTML, Semantic HTML, CSS, Tailwind CSS, Flexbox, JSS, WCAG 2, CSS3 Animation, Figma, Web UI Design, UX Research, Responsive Design

Front-end Developer

2019 - 2020

CSAA

Built the presentation layer using the latest version of React library with the help of the following components: Webpack tool, PCSS/SCSS Preprocessor, JS/ES6, React-router, and Redux.
Designed and implemented the user interface for various workflows.
Fixed bugs and worked with support to resolve customer issues. Collaborated closely with the quality assurance engineers to understand application issues.

Technologies: Redux, Sass, CSS3, React, JavaScript, Responsive Design, Responsive UI, User Interface (UI)

Front-end Developer

2018 - 2019

True Colors LLC, August 2018 - April 2019

Styled HTML components using CSS and SASS.
Built fully responsive UI elements that can be reused across the site.
Created a mail list client with React and PHP back-end.
Improved events platform to handle venues, instructors, and other crucial data.
Enhanced WordPress theme functionality with PHP code and modified plugins.

Technologies: React, WordPress, Flexbox, HTML5, Sass, Tailwind CSS, Responsive Design, Responsive UI, User Interface (UI), eCommerce, JavaScript

Accessibility Expert

2016 - 2018

OpenTable.com

Led the accessibility team that seeks to allow the widest possible audience of users with different levels of technological endowment and sensory capacity, to access the online services of the company.
Created periodic audits to detect UI and accessibility problems using Wave and Axe tools as well as comprehensive manual testing.
Coded new React components fully accessible following Web Content Accessibility Guidelines (WCAG) 2.1.
Detected color problems as well as dialog enhancements and apply solutions to user interfaces.
Implemented the necessary code using HTML and javascript to support the WAI-ARIA standards in legacy documents.
Created documentation to ensure that front-end interfaces adhere to web standards.

Technologies: Accessibility, jQuery, CSS, HTML, A11Y, Responsive Design, Responsive UI, User Interface (UI), JavaScript

Front-end Engineer

2015 - 2015

ACME Technologies Inc

Built HTML templates for ticket purchase confirmation emails.
Improved the load speed for heavy traffic sites like NFL hall of the Patriots and San Francisco Zoo.
Coded full responsive micro websites using CSS Flexbox, Less, and Bootstrap.
Created new user interface features using Angular 1.4, HTML5, and Sass stack.
Worked as a front-end developer for a B2B and B2C ticket event company.

Technologies: CSS, Less, Bootstrap, Wireframing, Express.js, Socket.IO, Node.js, AngularJS, Webpack, User Interface (UI), JavaScript

UI Developer

2014 - 2014

Anyplace by Panasonic

Developed UI proposals to solve the very complex interface.
Created the HTML/CSS responsive templates.
Developed Angular directives for UI widgets.
Determined the calls to action to improve the user experience with A/B testing different approaches to see what works best.
Implemented responsive web design to provide an optimal viewing experience across a wide range of devices.

Technologies: AngularJS, PHP, Wireframing, HTML5, CSS3, JavaScript

Experience

Web Design and Development

http://true-tickets.com

As a prospective True Tickets client, I want to be able to find the information I need on the True-Tickets.com website so that I can understand what it is and how it works, be excited about the ways it can help my organization, and make a confident recommendation to my colleagues to license True Tickets.

Personal Website

https://hellovictor.dev/

This is my personal portfolio website. This is a mobile-friendly website built using HTML and CSS.

The website is fully accessible and is being updated regularly. The contact form is not working at the moment.

Website for True Colors — A Consulting and Training Company

https://www.truecolorsintl.com/

Web portal based on WordPress for a global consulting and training company with a proven model for maximizing people's performance through better communication.
My responsibilities:
• Developed the eCommerce store using WooCommerce, HTML, CSS, and JavaScript.
• Designed and implemented the user interface compatible with all the most used desktop and mobile browsers.
• Built full responsive UI elements that can be reused across the site.
• Improved events platform to handle venues, instructors, and other crucial data.
• Enhanced WordPress theme functionality with PHP code and modified plugins.
• Created and executed a deployment plan for the new site launch.

Realty San Miguel Website

https://sanmiguelrealestate.com/

Custom website for real state company located in san Miguel Allende, Mexico. The website includes properties listing with search, filters, and categories, fully responsive and easy to update. The website was built using the Laravel framework and MySQL database.

Skills

Languages

HTML, HTML5, CSS3, Sass, CSS, JavaScript, Less, PHP, Semantic HTML

Frameworks

Tailwind CSS, AngularJS, Express.js, Bootstrap, Redux, Laravel 5, Svelte

Libraries/APIs

Flexbox, Node.js, Socket.IO, jQuery, React, Vue

Paradigms

Responsive Web Design (RWD), Agile, Photoshop Design, Web UI Design, Web UX Design

Other

Accessibility, WCAG 2, Prototyping, User Experience (UX), Web Accessibility, Responsive Design, Responsive UI, User Interface (UI), eCommerce, A11Y, UI Testing, SEO Testing, Wireframing, Web UI, UI Audits, Adobe UX, HTML Templates, CSS3 Animation, Web UX, UX Research, Computer Science

Tools

Webpack, Git, Sketch, NPM, Figma, JSS

Platforms

Visual Studio Code (VS Code), MacOS, WordPress

Storage

MySQL

Education

1996 - 2000

Bachelor's Degree in Information Technologies

National Technological Institute of Mexico - Hermosillo, Mexico

Certifications

AUGUST 2021 - PRESENT

Foundations of User Experience (UX) Design

Coursera

JANUARY 2021 - PRESENT

UX Design Process: Empathize, Define, and Ideate

Coursera

Collaboration That Works

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