Sergio Oliver, Developer in Madrid, Spain
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Sergio Oliver

Verified Expert  in Engineering

WordPress Developer

Location
Madrid, Spain
Toptal Member Since
August 13, 2021

Sergio is a full-stack web developer with 10 years of experience delivering commercial web applications and interactive solutions. He has specialized in WordPress, React, and custom-made websites. Sergio is passionate about SEO and user-friendly web experiences and has a background in advertising and design.

Portfolio

Self-employed
Servers, Team Management, Rich User Interfaces, SEO Audits, WordPress, CSS...
Skytop Strategies Inspire Summits LLC dba
WordPress, WooCommerce, WordPress Design, WordPress Themes, Java, React, Redux...
Dialogue Theory Inc
WordPress, WordPress Plugins, HTML, PHP, WordPress Themes, CSS, jQuery...

Experience

Availability

Part-time

Preferred Environment

MacOS, Photoshop CC, Visual Studio Code (VS Code), Apache, WordPress, React, Diversity, Equity, & Inclusion (DEI)

The most amazing...

...tool I've developed was an automated CMS framework to speed up coding time and make content creation even easier for our clients.

Work Experience

Senior Web Developer

2018 - PRESENT
Self-employed
  • Delivered CMS and custom-coded projects for WordPress websites.
  • Coded Ajax and animation-rich websites and managed designers.
  • Communicated with clients to understand their needs and meet their expectations.
Technologies: Servers, Team Management, Rich User Interfaces, SEO Audits, WordPress, CSS, HTML, PHP, Gutenberg Editor, Front-end, Yoast SEO, Search Engine Optimization (SEO), Web, Web Development, API Integration, WordPress Plugins, HTML5, Bootstrap, Roots, Sage, Tailwind CSS, APIs, Squarespace, WordPress Design, REST APIs, Responsive Web Apps, HTML to WordPress, OpenAI GPT-3 API, OpenAI GPT-4 API, Site Speed Optimization, React, Test-driven Development (TDD), WordPress API, BuddyPress, Diversity, Equity, & Inclusion (DEI), User Interface (UI), UX Design, MySQL, Mailchimp, GoDaddy, Plugins, Web Design, SaaS, Gamification, Content Management Systems (CMS), Scheduling, Dashboards, HTML5 Animations, CSS3 Animation, Vue, MERN Stack, SCSS, Sass, Grunt, myCred, Custom Themes, Robust Web Development, Theme Customization, UI Design, Amazon Web Services (AWS), Integration, Dashboard Development, Full-stack, Figma, HubL, HubSpot, Bubble, No-code Development, Back-end, Zapier, MemberPress, ACF PRO, WordPress VIP, ADA Compliance, Basecamp, Next.js, Vercel, Full-stack Development

WordPress& React Fullstack Developer

2023 - 2023
Skytop Strategies Inspire Summits LLC dba
  • Extended a headless Wordpress-based huge newspaper.
  • Built React-based features for the site's front end.
  • Helped process the information connecting different sources to the site.
Technologies: WordPress, WooCommerce, WordPress Design, WordPress Themes, Java, React, Redux, React Redux, React Router, WordPress SEO, Basecamp, eCommerce, Agile, Full-stack Development

Senior Web Developer

2021 - 2023
Dialogue Theory Inc
  • Built complex data collection structures that periodically fetched external APIs, processed the data, and made it interact with app databases.
  • Developed complex real-time interfaces that allowed users to interact with multiple data sources intuitively.
  • Applied multilinear animations that helped make user interfaces more attractive and user experiences more comforting.
Technologies: WordPress, WordPress Plugins, HTML, PHP, WordPress Themes, CSS, jQuery, JavaScript, WP Engine, Advanced Custom Fields (ACF), Databases, APIs, REST APIs, Git, GitHub, SEO Tools, Site Speed Optimization, Accessibility, Pixel Perfect, Test-driven Development (TDD), WordPress API, WooCommerce, Diversity, Equity, & Inclusion (DEI), User Interface (UI), UX Design, MySQL, cPanel, Webflow, Plugins, Web Design, SaaS, PayPal, Gamification, Video Streaming, Content Management Systems (CMS), Scheduling, Dashboards, HTML5 Animations, CSS3 Animation, Divi, SCSS, Sass, Grunt, PSD to PHP, Custom Themes, Robust Web Development, Theme Customization, Web Analytics, Integration, Dashboard Development, Wix, Full-stack, Mobile Payments, Figma, Bubble, No-code Development, Back-end, Gravity Forms, MemberPress, ACF PRO, WordPress Multi-user, Audio Streaming, Membership Sites, Stripe, WordPress SEO, WordPress VIP, Leadership, ADA Compliance, Google Maps API, CI/CD Pipelines, Basecamp, Stripe API, eCommerce, Full-stack Development, Database Architecture

Senior Web Developer

2015 - 2018
Plug and Play Design
  • Led a team to deliver successful web projects based mainly on WordPress.
  • Developed the agency's own CMS framework to speed up the development process.
  • Met with clients for briefings, updates, and delivery meetings.
  • Won awards for state-of-the-art websites we developed as a team.
Technologies: Rich User Interfaces, JavaScript, Team Management, WordPress, CSS, HTML, WordPress Themes, PHP, Gutenberg Editor, Front-end, Yoast SEO, Search Engine Optimization (SEO), Web, Web Development, API Integration, Sketch, Sketch to WordPress, WordPress Plugins, HTML5, Bootstrap, Bootstrap 4, Tailwind CSS, APIs, WordPress Design, REST APIs, Responsive Web Design (RWD), Responsive Web Apps, User Experience (UX), HTML to WordPress, Laravel, Accessibility, Pixel Perfect, Test-driven Development (TDD), WordPress API, WooCommerce, BuddyPress, Diversity, Equity, & Inclusion (DEI), User Interface (UI), MySQL, cPanel, Mailchimp, Plugins, Web Design, SaaS, PayPal, Gamification, Video Streaming, Content Management Systems (CMS), Dashboards, HTML5 Animations, CSS3 Animation, Divi, SCSS, Sass, Grunt, PSD to PHP, Robust Web Development, Theme Customization, Web Analytics, Technical Leadership, UI Design, Integration, Dashboard Development, Full-stack, HubSpot, Back-end, ACF PRO, Music, Membership Sites, WordPress SEO, Leadership, ADA Compliance, Google Maps API, CI/CD Pipelines, Basecamp, eCommerce, Full-stack Development, Database Architecture

Sole Web Developer

2014 - 2015
Spinach
  • Owned all coding phases of the website development process from inception to deployment.
  • Interpreted briefings and suggested new functionalities.
  • Devised strategies that provided full functionality across devices.
  • Assisted the design team in creating efficient interfaces.
  • Ensured successful delivery of projects within strict agency timeframes.
Technologies: WordPress, Rich User Interfaces, JavaScript, CSS, PHP, Front-end, Web, Web Development, Sketch, Sketch to WordPress, WordPress Plugins, HTML5, Bootstrap, Bootstrap 4, APIs, WordPress Design, REST APIs, Responsive Web Apps, HTML to WordPress, MySQL, Plugins, Web Design, SaaS, Dashboards, SCSS, PSD to PHP, Robust Web Development, Full-stack, ACF PRO, Music, Full-stack Development, Database Architecture

Senior Web Developer

2012 - 2014
Ardifusion
  • Built a range of interactive projects for high-visibility brands, interacting daily with graphic designers, account executives, and clients and paying attention to UX and compliance standards.
  • Integrated multiple service APIs, including Facebook apps, a range of Google APIs, Twitter, and Instagram.
  • Presented detail-rich interfaces that thrilled clients.
  • Managed the team's workflow with autonomy and continually learned and shared knowledge with them.
Technologies: WordPress, Ajax, JavaScript, Apache, Team Management, CSS, WordPress Themes, PHP, Front-end, Web, Web Development, Responsive Web Design (RWD), Responsive Web Apps, User Experience (UX), MySQL, cPanel, Mailchimp, Video Streaming, Scheduling, SCSS, PSD to PHP, Full-stack, ACF PRO, Leadership, Full-stack Development, Database Architecture

Somlo | Watches Boutique

https://surgever.com/somlo/
A custom, state-of-the-art website. We focused our coding on providing great back-end usability so that the clients could handle the complexity smoothly and great front-end usability so that potential buyers were delighted to use it and see the company values reflected in the website animations. The website was built on WordPress as an Ajax-driven web app.

Rapleys

https://rapleys.com
A real estate website built in WordPress that used APIs to connect the company's properties catalog with external aggregators. I built the API that picked content from the database, converted it to XML, and was totally integrated and manageable within the WordPress back end. I also built a geocoordinates feature for distance-based searches for custom post types (CTP) and the general content structure.

Acimut Psychology

https://acimutpsicologia.com/blog/
A smooth and dynamic WordPress project focused on providing an outstanding user experience. The website features sleek animations and all content is served smoothly through Ajax. When the visitor loads the page for the first time, they meet a custom-made animation of the company logo.

Pinwheel Garden | Donations Collection

https://pinwheels.preventchildabuse.org
A D3-based info map connected to an external Airtable database with a form that allows purchase project participation. I handled the user interface, adding rich user interactions and improving the app's overall functionality.

Languages

JavaScript, CSS3, HTML5, PHP, PHP 7, CSS, HTML, Sass, SCSS, SQL, HubL, Curl Language, XML, Java

Frameworks

Divi, Bootstrap, Tailwind CSS, Next.js, Laravel, Redux

Libraries/APIs

React, jQuery, WordPress API, BuddyPress, REST APIs, Vue, Google Maps API, Stripe, Stripe API, Sage, D3.js, Typeform.io, React Redux, React Router

Tools

Advanced Custom Fields (ACF), Grunt, Gutenberg Editor, Sketch, Mailchimp, Wix, Figma, Themify, Bubble, Zapier, ACF PRO, Basecamp, Apache, NPM, Roots, Adobe Photoshop, Photoshop CC, Webpack, Git, GitHub

Paradigms

Search Engine Optimization (SEO), Responsive Web Design (RWD), UX Design, Gamification, UI Design, Test-driven Development (TDD), Agile

Platforms

MacOS, Visual Studio Code (VS Code), WordPress, WooCommerce, Web, cPanel, Amazon Web Services (AWS), WordPress VIP, Vercel, Webflow

Storage

MySQL, Database Architecture, WP Engine, Databases

Industry Expertise

Web Design

Other

Ajax, Rich User Interfaces, WordPress Themes, WordPress Design, WordPress Plugins, PSD to PHP, PSD to HTML, PSD to WordPress, Front-end, Yoast SEO, Web Development, API Integration, Sketch to WordPress, Bootstrap 4, APIs, User Interface (UI), Elementor, GoDaddy, Squarespace, Responsive Web Apps, User Experience (UX), HTML to WordPress, SEO Tools, Site Speed Optimization, Accessibility, Diversity, Equity, & Inclusion (DEI), Pixel Perfect, Plugins, SaaS, PayPal, Video Streaming, Content Management Systems (CMS), Scheduling, Dashboards, HTML5 Animations, CSS3 Animation, MERN Stack, Custom Themes, Robust Web Development, Theme Customization, Web Analytics, Technical Leadership, Dashboard Development, Integration, Full-stack, Mobile Payments, No-code Development, Back-end, Gravity Forms, MemberPress, WordPress Multi-user, Music, Audio Streaming, Membership Sites, WordPress SEO, Leadership, ADA Compliance, CI/CD Pipelines, eCommerce, Full-stack Development, Servers, Team Management, SEO Audits, OpenAI GPT-3 API, OpenAI GPT-4 API, HubSpot, Online Marketing, Advertising, Design, Animation, myCred, Forms

2010 - 2011

Master's Degree in Advertising and Public Relations

Complutense University of Madrid - Madrid, Spain

2006 - 2010

Bachelor of Science Degree in Advertising and Public Relations

Complutense University of Madrid - Madrid, Spain

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