Maciej Ziolko
Verified Expert in Engineering
WordPress Developer
Kraków, Poland
Toptal member since December 21, 2021
Maciej is a full-stack developer who specializes in WordPress. He has built complex WordPress websites and plugins, pushed WP to its boundaries, converted platforms from Squarespace to WordPress, optimized websites for best performance, security, and SEO, ran automated Selenium tests, and ensured work meets stringent data privacy regulations. Maciej's exceptional work has enabled client website performance levels to reach a 100/100 score in Google PageSpeed Insights while improving conversions.
Portfolio
Experience
- PHP - 6 years
- WordPress - 5 years
- JavaScript - 5 years
- Sass - 5 years
- REST APIs - 4 years
- WooCommerce - 4 years
- Avocode - 3 years
- TypeScript - 2 years
Availability
Preferred Environment
MacOS, PhpStorm, Docker, Visual Studio Code (VS Code), Git, Business Requirements, Slack
The most amazing...
...and challenging project I have worked on was a custom CRM and CMS system built for fine art galleries.
Work Experience
Full-stack Technical Lead
Codete
- Maximized real estate profits with my team by setting up 1-click solution WordPress landing pages with custom templates.
- Fine-tuned a solution enabling medical facilities and patients to share encrypted medical data such as X-rays with doctors quickly.
- Devised a custom CRM and CMS system built specifically for fine art galleries with my team.
- Developed, launched, secured, and optimized WordPress websites.
WordPress Full-stack Developer
Sergeant AG
- Created and maintained a Wordpress Website. (https://firstresponder.gvz.ch/).
- Used Flow as a task-tracking tool and Slack as a communication channel.
- Implemented custom formulas based on the WPForms plugin.
Software Engineer
Bitlane
- Maintained dozens of WordPress websites with constant updates, security measures, and feature adjustments.
- Built a fully functional podcast system synchronized with the most popular platforms, such as Google, Spotify, and Apple Podcasts.
- Developed and launched multiple custom-made websites.
IT Consultant and Sales Manager
Totex
- Developed a WordPress plugin to automatically connect published sale offers to the world's most popular providers (Mascus, Mobile.de, Autoline, and Otomoto).
- Maintained the eCommerce platform and SEO/SEM aspects of the website.
- Participated in Machinery Auctions, maintained good relationships with the clients, and gathered feedback to formulate better, more strategic UX on the website.
Web Developer
Freshview
- Developed and launched WordPress and static websites.
- Built a WordPress plugin to maintain hotel reservations.
- Interviewed PHP developers and managed a team of junior WordPress engineers.
- Worked with many different WordPress page builders, such as Elementor, Beaver, and Cornerstone.
Experience
BDP Real Estate
https://beckerdaiberpartner.com/Talyo
https://talyo.deTruck and Machinery Dealer Platform
CRM and CMS for Fine Art Galleries
Blogging Platform Migration
Education
Bachelor's Degree in Computer Science
AGH University of Science and Technology - Cracow, Poland
Certifications
AWS Certified Developer – Associate
Amazon Web Services
Skills
Libraries/APIs
WordPress REST API, REST APIs, WordPress API, jQuery, React, PayPal API, Node.js
Tools
PhpStorm, Figma, Zeplin, Avocode, Google Analytics, GitHub, Bitbucket, ACF PRO, Advanced Custom Fields (ACF), Git, Zapier, AWS ELB, AWS IAM, AWS CLI, AWS SDK, Slack
Languages
PHP, JavaScript, Sass, XML, CSS, HTML, HTML5, Less, TypeScript, C++
Frameworks
Symfony, Laravel, Bootstrap, Twig, Selenium, Divi, JSON Web Tokens (JWT), Angular
Paradigms
Agile, Scrum, Search Engine Optimization (SEO), Responsive Web Design (RWD), UI Design
Platforms
MacOS, WordPress, WooCommerce, Webflow, Shopify, WordPress Theme Design, Visual Studio Code (VS Code), cPanel, Docker, AWS NLB, AWS ALB, AWS Security Token Service (STS), Amazon Web Services (AWS), LAMP
Storage
MySQL, MongoDB, Amazon S3 (AWS S3)
Industry Expertise
Web Design
Other
Software Development, APIs, Elementor, CornerStone, Ajax, Gravity Forms, PSD to WordPress, WordPress Plugins, WordPress Themes, Front-end, User Interface (UI), User Experience (UX), Content Management Systems (CMS), Full-stack, Responsive UI, Communication, Business Requirements, HTML to WordPress, Mobile First, Web Development, Performance Optimization, QA Testing, API Connectors, Squarespace to WordPress, eCommerce, WordPress eCommerce, PayPal, Card Payments, Video Streaming, Payment APIs, CSS3 Animation, HTML5 Animations, PSD, BrainTree
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