Vlad Pazenuks, Developer in Birmingham, United Kingdom
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Vlad Pazenuks

Verified Expert  in Engineering

Magento Developer

Birmingham, United Kingdom
Toptal Member Since
May 14, 2021

Vlad is a certified Magento developer with six years of freelance eCommerce experience with multiple digital agencies. He has migrated code from Magento 1 to 2, customized and built themes from scratch, and implemented back-end functionality. Vlad has also optimized online stores to perform well in Google PageSpeed Insights, Core Web Vitals, and other performance audits.


Pazenuks Limited
Shopify, WooCommerce, OpenCart, Magento 2, HostCMS, Magento
Magento 2, Magento 1, PHP, SQL, CSS, HTML5, jQuery, JavaScript, Lighthouse...
Magento 2, JavaScript, Knockout (Knockout.js), RequireJS, SQL, PHP, HTML5, CSS...




Preferred Environment

Magento 2, Shopify, Magento 1, WordPress, MacOS, PhpStorm, Windows, Sequel Pro, Lighthouse, Magento

The most amazing...

...thing I've done is optimize a Magento 2 store to get 90 to 99 points out of 100 in a Google PageSpeed Insights audit.

Work Experience

eCommerce Specialist

2020 - PRESENT
Pazenuks Limited
  • Implemented multiple theme customizations for a Shopify client to align mobile and desktop site versions to the design requirements.
  • Created dynamic sections for Shopify pages, using a metafields plugin to display image collages on blog posts.
  • Built a multilingual Shopify site for a startup client, including the development and installation of a unique translation pack (Latvian language).
  • Implemented an interactive map with city district-based pricing for delivery, featuring fill colors for each price range. This was an OpenCart store.
Technologies: Shopify, WooCommerce, OpenCart, Magento 2, HostCMS, Magento

Senior Front-end Magento Developer

2020 - PRESENT
  • Migrated several Magento 1 modules to Magento 2 within a larger migration project for a client. One of the modules was meant to serve meta titles and descriptions for filtered categories based on filter values.
  • Provided support for existing eCommerce clients, including front-end theme fixes, ad hoc changes, issues debugging, back-end customizations, database manipulations, solution research, and estimation.
  • Optimized several Magento 2 sites to improve their Google PageSpeed scores and pass a Core Web Vitals audit.
  • Developed an internal module that improves the page speed of any Magento 2-based website.
Technologies: Magento 2, Magento 1, PHP, SQL, CSS, HTML5, jQuery, JavaScript, Lighthouse, Google Search Console, Knockout (Knockout.js), RequireJS, Less, Composer, Git, Warden, Linux, Sonassi, Debugging, Refactoring, Optimization, Magento

Senior Magento Developer

2019 - 2020
  • Migrated modules from Magento 1 to Magento 2 with both storefront and admin functionality.
  • Collaborated with a colleague to create and complete a Magento 2 theme from scratch for a multinational Magento 2 retailer.
  • Extended a third-party theme and customized it per the design for mobile, tablet, and desktop devices.
  • Developed a range of widgets for admins to use in the CMS page editor within a Magento 2 site.
Technologies: Magento 2, JavaScript, Knockout (Knockout.js), RequireJS, SQL, PHP, HTML5, CSS, jQuery, Magento

Magento Developer

2019 - 2019
  • Implemented theme style amends, additional features, and improved responsiveness across a website.
  • Developed page layout templates for admins to use when creating CMS pages. This was well before Magento released page builder functionality.
  • Performed debugging and code refactoring for a custom Magento 2 loyalty card extension.
  • Implemented a range of unit tests that utilized Selenium and BrowserStack for browser emulation to perform automated user journeys.
Technologies: Magento 2, BrowserStack, Selenium, PHP, JavaScript, CSS, HTML5, Unit Testing, MAMP, Magento

Full-stack Web Developer

2019 - 2019
Affinity Agency
  • Implemented multiple theme changes and fixes for a client's Magento 1 and Magento 2 stores.
  • Resolved data integrity issues for a client that had products with a vast number of attributes in its Magento 1 store, which included cleaning and fixing data for hundreds of products.
  • Implemented custom post types and flexible content widgets for a WordPress site that was a religious portal that included branch information, blog posts, news, articles, and authors profiles.
Technologies: PHP, JavaScript, SQL, CSS, HTML5, Magento 1, Magento 2, WordPress, WooCommerce, Shopify, Magento

Web Developer

2017 - 2019
Angling Direct
  • Developed a module for posting job ads on a corporate site.
  • Optimized back-end code to reduce time to first byte (TTFB).
  • Configured the settings and mapping of XML files for a Magento 1 to Magento 2 migration for an 8GB database comprising orders, customers, and products.
  • Delivered minor theme tweaks and changes for A/B testing to improve key interface profiles (KIPs) and store conversion rates.
Technologies: PHP, Magento 1, Magento 2, jQuery, XML, HTML5, CSS, SQL, Magento

Web Developer

2016 - 2017
  • Developed a custom MVC architecture for the website of a logistics company that received 100+ orders per day.
  • Implemented admin and customer areas for managing and tracking parcels.
  • Integrated FedEx, TNT, and UPS APIs to automate parcel labels and invoice generation.
Technologies: PHP, JavaScript, CSS, HTML5, SQL, MVC Design, APIs, API Integration

Junior PHP Developer

2016 - 2016
  • Developed a time-tracking tool as an initial test project.
  • Improved the user area UI by implementing mass-actions functionality for internal tables.
  • Fixed a bug that arose only within specific conditions.
Technologies: PHP

Magento 2 Front-end Optimization to Pass a Core Web Vitals Audit

Optimized a large Magento 2 store so that it would pass a Core Web Vitals audit and achieve a good Google PageSpeed score. I implemented the following to achieve the goal:
• Compressed fonts.
• Minified and preloaded assets.
• Preconnected origins.
• Created critical CSS to eliminate render-blocking assets.
• Deferred and delayed third-party scripts, such as live chat, tracking, and analytics services.
• Eliminated theme layout shifts during page load.
• Connected image compression service and configured CDN.
• Configured varnish to minimize TTFB and set the leverage browser cache.

Before implementing all of this on a real-world store, I had to do a lot of R&D because there are very limited resources that describe how to apply these techniques for Magento.

WordPress and Magento 2 International Site for Bulldog Skincare

Migrated a Magento 1 site to a new Magento 2 build that was integrated within WordPress with 20+ store views for different countries. As one of three developers, I focused mainly on the front end, implementing the design for the category page, product page, some CMS widgets, and flexible content elements for WordPress. I also migrated a few modules from the legacy Magento 1 build.

Technologies: Magento 1 and 2, WordPress, PHP, MySQL, Less, CSS, HTML5, JavaScript

Site Redesign for Penelope Chilvers

Redesigned an eCommerce website:
• Installed a third-party theme.
• Created a child theme with hundreds of design amends for mobile, tablet, and desktop across all site pages, including CMS, category, product, basket, and checkout pages.
• Implemented responsive image collages.
• Resolved a third-party theme to address cross-browser compatibility issues.

Technologies: Magento 2, PHP, MySQL, LESS, CSS, HTML, JavaScript

Shopify Build for Nikki Bradford

Customized a third-party theme and plugins to achieve the design requirements. I implemented a custom brands page that automatically generates brands and sorts them in A-Z order, grabbing data from the vendor field.

Technologies: Shopify, Liquid, Sass, CSS, HTML5, JavaScript

B2B and B2C Site Redesign for A1 Coffee

Completely redesigned the original Magento 2 site, using a third-party theme and hundreds of design changes throughout the site to give it a unique style and features.

Technologies: Magento, PHP, MySQL, WordPress, HTML, CSS, JavaScript

Automated UI Tests for a Magento 2 Store

The site had a poorly implemented legacy extension for privilege cards, which was developed by the previous agency. The client couldn't afford a complete rebuild of this extension, but any minor changes in the logic and UI of this extension caused complex issues and bugs. Therefore, the client wanted to raise the quality of testing before any live deployment.

I designed and implemented a range of automated Selenium unit tests that used BrowserStack to emulate real user interactions with their Magento 2 site. I also created a single-page dashboard to track the execution and results of the tests. Organized as suites, their purpose was to check key user journeys: adding a product to cart, checkout, login and registration, and applying discount codes and privilege cards.

Data Migration from Magento 1 to Magento 2

Fully configured data migration config files (table and field mapping and integrity conflicts resolution) for the migration of a huge 8GB database of all previous customers, orders, and product information to the new Magento 2 site.

Technologies: Magento 1, Magento 2, PHP, SQL, XML

B2B Site Maintenance and improvements for Promstal

Improved the B2B legacy site by implementing a multilangual site structure within a rare CMS platform, improving translations, and training the staff to manage the content on all pages.

Technologies: HostCMS, HTML, CSS, PHP, XML
2016 - 2019

Bachelor's Degree in Business Information Systemss

University of East Anglia - Norwich, England, UK

2004 - 2016

Secondary Education in Secondary Education

Rigas Kengaragas Secondary School - Riga, Latvia

2011 - 2015

Progmeistars Certificate in Computer Science

Progmeistars - Riga, Latvia


Magento 2 Certified Associate Developer



RequireJS, jQuery, Liquid


Lighthouse, PhpStorm, Sequel Pro, GitLab, Composer, Git, BrowserStack, MAMP, NGINX, Varnish


PHP, CSS, HTML5, JavaScript, Less, Java, R, Python, SQL, Pascal, C++, Batch, XML, Liquid Template, Sass


Magento 2, Windows, Magento, Magento 1, Shopify, WordPress, MacOS, Oracle, WooCommerce, Linux, OpenCart

Industry Expertise

Project Management


Knockout (Knockout.js), Selenium, PHPUnit


Object-oriented Programming (OOP), MVC Design, Refactoring, Unit Testing, Automated Testing


Database Management Systems (DBMS), MySQL


Web Development, Warden, Machine Learning, Information Retrieval, Computing in Science & Engineering (CISE), Programming, Human Resources (HR), System Development, Systems Analysis, Logic Design, Debugging, Google Search Console, Sonassi, Optimization, HostCMS, Critical-path CSS, eCommerce, APIs, API Integration

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