Who: Mariusz Szatkowski, Senior WooCommerce Developer shipping commercial WordPress work since 2006.
What: Custom WooCommerce development, payment gateway integration, multi-currency stores, subscription commerce, B2B e-commerce, Headless CMS architectures.
Where: A Polish WooCommerce agency in Gdynia, Poland, working as a nearshoring partner for foreign and EU clients. Cross-border VAT and VIES, multi-currency stores, and delivery to the German, UK and Nordic markets.
How much:
- Standard WooCommerce store: quote and schedule after scope confirmation
- Advanced e-commerce: quote and schedule after integration review
- Enterprise solution: individual delivery plan and acceptance criteria
- Hourly Rate: individual quote
- Written scope review
Custom WooCommerce development on WordPress
WooCommerce on a WordPress site is a viable e-commerce path when you want to keep editorial control of content while running checkout, inventory, and payment integrations on the same stack. As an expert WooCommerce Developer, I work end-to-end: custom theme development, REST/GraphQL API integrations, payment gateway wiring, and performance work measured against an agreed baseline.
WordPress and its extension ecosystem provide a practical foundation for building and operating an online store. When an existing WordPress site needs catalogue, checkout, payment, tax, or fulfilment functionality, WooCommerce can keep content and commerce within one maintainable stack.
WooCommerce is more than a basic product plugin. It provides catalogue, order, payment, tax and extension foundations that can be adapted to the needs of a specific store. As an expert WordPress developer and WooCommerce developer, I add advanced e-commerce features and improve the technical parts of the sales funnel without promising a commercial outcome that depends on the wider business.
Who you are hiring
- Shipping commercial WordPress since 2006, before Gutenberg and the REST API
- Senior-led: the engineer at discovery is the engineer at the keyboard at week six
- No offshore handoff, no PM layer billed back to you
- WordCamp Europe organiser, WordPress Foundation Credits mentor
WooCommerce delivery: scope and measurement
WooCommerce combines an open-source core with a broad extension ecosystem and direct control over the code and data. As an independent expert, I help turn that flexibility into maintainable checkout flows, integrations, and performance that can be measured.
What Does a WooCommerce Developer Do?
A WooCommerce developer is more than just a programmer; we are the architects of your online business revenue stream. While basic setups allow you to list products, a professional developer builds a tailored shopping experience that aligns with your brand and business goals.
My role is to ensure your technical foundation supports your sales strategy. This includes:
- Customising the shopping experience: Modifying cart flows, checkout fields, and product layouts to reduce friction.
- Improving Technical Stability: Handling updates, conflicts, and performance issues with agreed monitoring and recovery procedures.
- Integrating Systems: Connecting your store with ERPs, CRMs, and payment gateways for automated operations. More in the guide on WooCommerce integrations with ERP and wholesale APIs.
What is WooCommerce and why choose it?
WooCommerce is a widely used e-commerce platform built on WordPress. Its flexibility and extension ecosystem make it a practical option for companies that need control over their store and integrations. When a project reaches beyond the store itself, it overlaps with general WordPress website and shop development.
| Benefit | Description |
|---|---|
| Flexibility | Ability to tailor the store to individual needs, from design to functionality. Whether you need a simple shop or a complex marketplace. |
| Scalability | Ideal solution for both small stores starting out and large companies with thousands of products. It grows with your business. |
| SEO foundation | WooCommerce can support technical SEO when URLs, schema, templates and performance are configured and verified. |
| WordPress integration | Tight integration giving access to thousands of plugins, themes, and community support. |
Our WooCommerce Services
I offer development services designed to make a store production-ready, maintainable and easier to operate. The scope can cover checkout friction, integrations and capacity, with commercial results measured separately from technical delivery.
All my solutions are based on dedicated and scalable implementations, as opposed to bloated templates. Every line of code serves a specific business purpose.
How can a WooCommerce developer help you?
1. Custom implementations and modifications
Every business is different, so universal templates are often not enough to create a store that truly attracts customers. This is where a specialist steps in, who:
- Adapts the look of your store to the needs and requirements of the industry (Custom UI/UX).
- Implements custom features, e.g., advanced product filters, booking systems, or a proprietary discount system.
- Ensures that everything is intuitive and aesthetic for your specific audience.
2. Performance optimisation
In e-commerce, every second of loading matters. A WooCommerce developer knows how to slim down your store, simplify code, and speed up site operation. This all translates into:
- A stronger technical basis for SEO, measured with Core Web Vitals and repeatable tests.
- Less checkout friction, without treating performance alone as a guarantee of higher sales.
3. Integrations with external systems
Want your store to connect with a wholesaler, accounting system, or payment gateways? The job of a WooCommerce developer is:
- Configuring integrations with couriers and shipping providers.
- Connecting the store with a warehouse system so product status updates automatically.
- Installation and adaptation of complex payment methods.
4. Security and updates
WordPress and WooCommerce are living platforms that update frequently. Care must be taken for:
- Regular updates of plugins and theme.
- Performing daily backups.
- Responding to threats and security vulnerabilities proactively.
A WooCommerce developer monitors changes in the WordPress environment, keeping your store secure and constantly up to date.
Why invest in a senior WooCommerce developer
Where the technical depth pays back
Common WooCommerce audit findings include overlapping plugins, slow category queries and checkout instability under load. The fix is rarely another cache plugin. It usually requires inspecting the query plan around wp_postmeta, reducing autoload, profiling hooks and running load tests. The actual scope follows from measurements on the store in question.
What investing in this work actually buys
The aim is a lower total cost of ownership, a safer upgrade path and performance demonstrated by measurement. We do not guarantee a conversion lift because product, traffic, price and the wider funnel all affect it. After the audit, we define a baseline, measurable acceptance criteria and a scope that reduces unnecessary dependencies.
Common WooCommerce implementation scenarios
These scenarios describe the type of work, not results attributed to specific clients:
Fashion Retailer
Large catalogue with WMS warehouse integration
Stock sync, queues and error handling
Restaurant Chain
Order system with online payment integration
Clear checkout and payment status handling
B2B Marketplace
Platform with multiple vendors and price tiers
Roles, order rules and accounting integrations
Each implementation starts with data from the actual store. Results are reported only after measuring production or an agreed load-test environment.
Technical Stack & Technologies Used
We select technologies around the store’s integration, performance and maintenance requirements:
The autonomous future: UCP Agent Mesh
An interactive demo of the Universal Commerce Protocol agent mesh.
AI agents transact autonomously without intermediaries, with sub-1ms latency.
Every WordPress site becomes a node in the global UCP commerce network.
Automatic settlements & escrow - zero manual work, zero risk of unauthorized access.
Real-world use cases
AI agent picks the cheapest payment gateway per transaction, in real-time.
AI negotiates pricing and delivery terms with wholesalers based on live stock data.
Sell individual articles, courses, or PDFs for fractions of a cent - no subscription needed.
Funds held in smart contract - auto-released once buyer confirms delivery.
Product prices updated every minute based on demand, competitors, and live costs.
Smart contract pays affiliate commission within milliseconds of a confirmed purchase.
UCP Node v4.0
Core Vitality
Mesh Sync
> Initializing UCP Mesh...
> Connecting to Global Agent Mesh [OK]
> Verifying Smart Contract v2.1... [VERIFIED]
> Listening for commerce events...
> Incoming transaction: TX-828-A1-Z [PROCESSING]
_
Protocol Controls
"The Universal Commerce Protocol enables AI agents to transact autonomously, removing friction from the global economy."
In addition to the technologies above, as a WooCommerce developer I use caching mechanisms (Redis Object Cache, Varnish), modern formats, server infrastructure (LiteSpeed Enterprise, NGINX), and CI/CD systems (GitHub Actions) to make releases controlled and reversible. I also work with Headless WooCommerce architecture, separating the WordPress backend from a frontend built in React/Next.js or Vue/Nuxt.js.
Headless WooCommerce: The Future of E-commerce
Traditional WooCommerce generates the HTML view on the server. Without optimisation this can create delays, especially with large catalogues and query-heavy templates. Headless commerce separates the visual layer from the commerce backend, but is selected only when its operational trade-offs fit the project.
As a Headless WooCommerce expert, I build stores using an architecture where the WordPress + WooCommerce engine only handles products, orders, payments, and storage, while communicating via GraphQL or REST API with a modern, highly efficient frontend built on an innovative framework like Astro or Next.js.
What can this approach provide?
- Independent scaling of the frontend and data layer.
- More control over Core Web Vitals, without guaranteeing search rankings.
- Enhanced security (no browser-level access to the WP panel/database).
- Ultimate design freedom (no limitations imposed by heavy block builders like Divi or Elementor).
Performance measurement and acceptance criteria
Targets are agreed after an audit and recorded for specific templates and test conditions:
Integration Ecosystem
We connect your store with hundreds of external systems:
| Category | Tools |
|---|---|
| Payments | Stripe, PayPal, Square, Authorize.net, Klarna, Afterpay |
| Shipping | FedEx, UPS, DHL, USPS, ShipStation, ShipBob |
| ERP/CRM | SAP, Salesforce, Microsoft Dynamics, HubSpot, Zoho |
| Marketing | Mailchimp, Klaviyo, GetResponse, ActiveCampaign, HubSpot |
| Automation | Zapier, Make, WooCommerce Automations, n8n |
| Multilingual | WPML, Polylang, Weglot, TranslatePress, Aelia |
A senior WooCommerce developer pays back in lower total cost of ownership: fewer plugins to maintain, faster category pages, and an easier upgrade path on major WooCommerce releases.
AI-Ready Commerce: Universal Commerce Protocol
We assess readiness for Universal Commerce Protocol (UCP) integration and design a pilot where the store’s channels and systems support it.
The scope covers product data quality, schema, feeds, stock availability and safe checkout boundaries. Protocol and channel support is confirmed during discovery, without promising indexing or visibility in a particular assistant. Broader AI implementation for companies follows the same engineering method. For agentic workflows that require secure actions, we build dedicated MCP server development systems.
Learn more about Universal Commerce Protocol
UCP readiness audit scope:
● Catalogue and variant consistency
● Availability and stock signals
● Permission boundaries and checkout validation
● Pilot, monitoring and rollback plan
What we actually do, and what we don’t claim
WordPress experience back to 2.x
Commercial WordPress work since 2006 spans the period before Gutenberg and the REST API, as well as the transition to FSE and HPOS. That depth shows up in audits and diagnostics, not just marketing claims.
Performance work, not conversion promises
We do not promise a conversion lift because it depends on the funnel, traffic source and product. After an audit, we agree realistic Core Web Vitals targets for named templates and a repeatable measurement method. The report records the baseline, test conditions and post-deployment result.
Security as a configuration, not a plugin
Cloudflare WAF rules tuned per merchant, application passwords disabled where not needed, file-edit disabled at runtime, custom permissions audit at handoff. We do not install Wordfence and call it a day; the plugin floor is a starting point, not an architecture.
Direct senior access
The person handling the initial written discovery remains responsible for the technical implementation. There is no hand-off from sales to an unknown junior team. If the scope requires a large shift-based team, we identify that early and recommend a larger partner where appropriate.
Ready for your own store?
If you have a specific idea for a new online store or plan to add advanced features to your current WooCommerce store, write down the scope, integrations, constraints, and expected outcome.
Frequently Asked Questions
Answers to the most popular questions about cooperation.
Popular questions
How much does WooCommerce development cost?
#Is WooCommerce a good choice for small business?
#What payment gateways can I integrate with WooCommerce?
#Can WooCommerce handle a large number of products?
#Is WooCommerce expensive to maintain?
#How quickly can I start selling?
#Can I migrate from another platform to WooCommerce?
#Is WooCommerce SEO-friendly?
#How to speed up WooCommerce store performance?
#Will WooCommerce store work on mobile devices?
#Is WooCommerce secure?
#How often should WooCommerce be updated?
#Will I receive support after implementation?
#Can I expand my store in the future?
#Can I sell internationally?
#What are e-commerce trends for 2026?
#Need an FAQ tailored to your industry and market? We can build one aligned with your business goals.
Let’s discuss
