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E-commerce Development for Online Stores and Sales Platforms

Full-stack software engineer Paweł Potacki against a technical backdrop of web development, custom software, and e-commerce dashboard mockups – main Open Graph banner for the international case studies page.

Online stores selected around the way the business works

I have been building online stores since 2015. I choose the platform based on the size of the catalog, the order process, planned integrations, maintenance needs and budget.

Depending on the project, I work with PrestaShop, WooCommerce or lightweight systems such as Quick.CART. The goal is not to add as many features as possible. The goal is to build a store that works reliably and remains manageable as the business grows.

Performance, checkout and integrations

I pay attention to loading speed, mobile usability, payment security and the purchasing process. When needed, I integrate the store with payment gateways, invoicing, inventory systems, ERP or CRM platforms and courier services.

Below you can browse selected e-commerce projects and see which solutions were used in practice.

Browse Selected Projects

Developer Paweł Potacki presenting a custom CraftCMS web platform case study featuring an interactive Mapbox project map mockup and automated PDF datasheets.
  • Craft CMS

Craft CMS Interactive Project Map & Automated PDF Datasheets

View Case Study
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Full-stack developer Paweł Potacki alongside English UI modules of a CraftCMS NGO campaign platform, featuring a live referendum countdown timer, interactive initiative map, and subscription blocks.
  • Craft CMS

Craft CMS Website for a Local Initiative

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Developer Paweł Potacki presenting a modern WordPress surveying and geomatics platform mockup with technical feature benchmarks and responsive UI layout.
  • WordPress

WordPress Website for Surveying and Geomatics

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Full-stack developer Paweł Potacki alongside design blocks of an industrial web platform, refinery infrastructure mockups, and corporate video framework.
  • Craft CMS
  • Custom Software

CDN Cache & Preload in Craft CMS

View Plugin
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Varnish Cache for ISPConfig 3 with Nginx SSL, Apache, WordPress and Craft CMS
  • Craft CMS
  • Custom Software
  • WordPress

Varnish Cache for ISPConfig 3 with Nginx SSL Termination

View integration
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Full-stack developer Paweł Potacki alongside English UI design blocks of a CraftCMS flooring platform, showing service hubs for LVT and resins, project showcase, and a 94+ PageSpeed score.
  • Craft CMS

Craft CMS Website for Flooring Company

View Case Study
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Full-stack developer Paweł Potacki alongside abstract floating UI dashboard blocks for US-based WordPress and DevOps projects, showcasing automated deployment checklists, performance metrics, and cloud scalability elements.
  • WooCommerce
  • WordPress

WordPress and DevOps Projects for US Clients

View Project
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Developer Paweł Potacki presenting a fine artist portfolio website mockup on a desktop monitor and a smartphone, highlighting a native clean layout and image galleries.
  • WordPress

WordPress Portfolio for a Fine Artist and Visual Designer

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Android software engineer Paweł Potacki presenting a custom LineageOS 22.2 kernel banner for Realme, featuring floating elements of a Linux C code snippet, a smartphone mockup highlighting KernelSU Next and SuSFS integrations, and open-source performance icons.
  • Custom Software

LineageOS Kernel for Realme SM6375 Devices

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Developer Paweł Potacki presenting a modern WordPress website mockup engineered for content creators and travel vloggers. The user interface on desktop and mobile showcases automated YouTube API video synchronization and a custom interactive travel map module.
  • WordPress

WordPress with YouTube Data API for Travel Creators

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Developer Paweł Potacki presenting a premium WordPress architecture website mockup on desktop and mobile devices with a native Gutenberg block layout and project gallery grids.
  • WordPress

WordPress Website for an Architecture Studio

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Full-stack developer Paweł Potacki presenting abstract floating UI layout mockups for a WordPress medical practice platform, showcasing clinical psychologist onboarding sections and an interactive appointment booking calendar.
  • WordPress

WordPress Website for a Psychologist

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Developer Paweł Potacki presenting a luxury WooCommerce fashion store mockup on desktop and mobile devices with e-commerce performance statistics.
  • WooCommerce
  • WordPress

WooCommerce Fashion Store Built with Oxygen

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Developer Paweł Potacki presenting a mockup of the Automated Static File Versioning plugin dashboard for CraftCMS, featuring settings panels, content hash flow diagrams, and a code block example.
  • Craft CMS
  • Custom Software

Automated Static File Versioning for Craft CMS

View Plugin
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Full-stack developer Paweł Potacki alongside English UI mockups of the Steelstorm store, showcasing a Vue.js variant matrix builder, a custom asynchronous preloader, and mobile-optimized search filters.
  • PrestaShop

PrestaShop Store with a Vue.js Product Form

View Case Study
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Full-stack developer Paweł Potacki presenting the CraftCMS PDF Generator plugin UI mockup with document configuration panels and server-side performance analytics.
  • Craft CMS
  • Custom Software

Craft CMS PDF Generator Plugin

View Plugin
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Preview of the Realme Bootloader Unlock Toolkit with ADB and Fastboot diagnostic information.
  • Custom Software

Realme Bootloader Unlock Toolkit

View Project
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Full-stack developer Paweł Potacki alongside design blocks of an industrial web platform, refinery infrastructure mockups, and corporate video framework.
  • Craft CMS

Craft CMS Website for Torpol Oil & Gas

View Case Study
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Full-stack developer Paweł Potacki presenting the Cool AVIF WordPress image conversion plugin architecture alongside performance optimization metrics.
  • Custom Software
  • WordPress

Cool AVIF: Image Conversion Plugin for WordPress

View Plugin
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Tell Me About Your Project

I usually reply within 24 hours

What You Can Expect When Working with Me

A good project starts with understanding the real problem. Before I write any code, I review the requirements, look at the current setup and suggest an approach that makes sense for the business, the budget and the expected scale.

Security and stability from the beginning

I think about data protection, maintainability and failure prevention before development starts. These are part of the architecture, not fixes added later.

Performance matched to the project

I optimize the code, database and server environment according to the way the system will actually be used. This includes everyday traffic, seasonal demand and predictable spikes during campaigns or product launches.

Clear communication

I explain the technical decisions in plain language. You know what is being built, why a particular solution was chosen and what alternatives were considered.

How We Work Together

I do not treat projects as an assembly line. I work on a limited number of implementations at a time so I can stay involved in the details and make sensible technical decisions throughout the process.

1. Initial Review

You describe the project, the current problem or the planned changes. I review the requirements and usually reply within 24 hours with initial feedback, follow-up questions and an estimated scope of work.

2. Architecture and Scope

Before development starts, we define the scope and select the right tools. Depending on the project, this may include WordPress, WooCommerce, Craft CMS, PrestaShop, custom PHP development, external integrations or Linux server configuration.

3. Development and Deployment

I handle the implementation, testing, deployment and performance tuning. After launch, I can also take care of updates, monitoring, further development and server maintenance when ongoing support is needed.

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