WooCommerce and WordPress API integration
Your store, invoicing, stock and shipping can exchange data on their own. I connect WordPress and WooCommerce with any service that has an API, for example:
- Payments – Stripe and other gateways, one-off payments and subscriptions.
- Invoicing and accounting – invoices created automatically when an order is paid.
- Email marketing and CRM – MailerLite and similar tools, with contacts from forms and orders landing in the right list.
- Shipping and fulfilment – labels and tracking numbers without retyping.
- Third-party and external APIs – REST APIs and webhooks of any service your business depends on.
If your system is not listed but has an API, a connection is most likely possible. I will check it before giving you a quote.
Custom WordPress plugins
I build features that ready-made plugins do not offer, or offer only as part of a heavy, yearly-paid package: a product configurator with custom dimensions, a price calculator, an appointment booking system, a lead-generation quiz, a custom post type with filters, or a page builder module.
The code follows WordPress coding standards, so it can be developed further and should not break with the next update.
WordPress AI integration
An assistant that answers customer questions based on your own content, automatic product descriptions, sorting form submissions. I connect WordPress with AI models such as Claude or OpenAI through their APIs, making sure customer data does not end up where it should not.
WordPress automation with n8n, Make or Zapier
Repetitive tasks that take hours today: publishing content, reports, exporting orders to a spreadsheet, generating PDF files. Some of it I build directly in WordPress, some in n8n or Make – whichever will be cheaper to maintain.
Recent projects
- Invoices that issue themselves. I connected an online course platform with an invoicing system – the customer pays, and the invoice is generated and sent automatically.
- Lead-generation quiz with MailerLite. A custom plugin with scoring, several video results, and contacts sent to the right MailerLite group. A copy of every lead stays in WordPress, with no monthly subscription.
- Subscription platform with lesson plans. A custom plugin with lesson archives and filters, a favourites counter via the REST API, watermarked PDF thumbnails, form spam protection, and Stripe subscriptions with plan-based access to content.
- Gamification for a course platform. Points, badges and leaderboards so students come back more often.
- Login protection across several sites. A custom block on admin logins from foreign IP addresses, with no external services or accounts.
How much does a custom WordPress plugin cost?
- E.g. invoice from an order, contact to MailerLite, extra checkout fields
- Tested on a staging copy before going live
- Short user guide
- Data sync between your store and another system
- Settings panel in WordPress
- Full source code handed over after payment
- Logic matched to your process
- Larger projects split into stages
- Price agreed before work starts
Every project is quoted after a short call, because the scope can vary a lot. Maintenance of the plugin or integration can be part of a WordPress care plan from PLN 150 per month.
How we work together
- Free call – you describe the problem, I ask how your work looks today and which systems you use.
- Proposal and quote – you get a description of the solution, scope, timeline and price.
- Build on staging – I test on a copy of your site, not on your live store.
- Launch and support – I deploy, hand over a short guide and stay in touch in case anything needs a fix.
Frequently asked questions
Can you integrate WooCommerce with Zoho, QuickBooks or Xero?
If the service has an API, usually yes. Sometimes a ready-made connector is enough and then I will recommend it, otherwise I build the integration myself.
Should I buy a ready-made plugin instead?
Often yes, and I will tell you so. A custom solution makes sense when the existing ones cover only part of what you need, cost a lot every year or slow your site down.
Will the plugin break after a WordPress update?
I follow WordPress coding standards, so updates should not break it. With a care plan, I check it after every round of updates.
Do I own the code?
Yes. After payment you get the full source code and can develop it further with anyone.
How long does it take?
Simple integrations usually take a few days, larger plugins around 2-4 weeks. You will get a more precise timeline with the quote.
Do you work with clients outside Poland?
Yes. I work remotely with clients across Europe and beyond, in English.
Related services
If your site needs some cleanup first, see WordPress website redesign or website takeover from a previous developer. For a new site or store, see WordPress website development.