I design and build the backend of large e‑commerce platforms. I start from the business process and choose the architecture and integrations so that the system solves the company’s real problems rather than merely running.
I also build my own digital products and websites for smaller businesses.
Selected brands from e‑commerce projectsPlatforms developed in collaboration with merce.com
Services
I start from the company’s problem, not from a framework.
I model the process together with the business and split the system into contexts before the first line of code is written.
Typical situationThe system keeps growing and every change touches several places at once.
A sample order process as a sequence of events
I develop and optimise large online stores and build modules tailored to the project.
I connect the platform with external systems through APIs and message queues.
I speed up search and queries so the store stays fast even at peak sales.
I look after the platform from deployment to day‑to‑day operation: I measure, fix and extend.
Business websites with online enrolment and mobile apps, such as Practice and Kidalu.
How I work
Four stages, in this order: from understanding the process to maintaining a running system.
I map the process out on sticky notes: what happens, who decides and where it hurts.
Event StormingResultA shared picture of the process: what happens, who decides and where the problems are.
I split the system into contexts so that a change in the cart doesn’t break invoices.
Domain‑Driven DesignResultA context map: which parts of the system are responsible for what.
PHP, tests and integrations that are still readable a year later.
PHP · MySQL · RabbitMQResultModules and integrations ready to deploy and to build on.
I measure, optimise and fix. The store has to hold up at peak sales too.
Solr · performanceResultA platform that stays stable at peak sales as well.
I treat AI as a pair programmer: it speeds things up, but the decisions stay with me. 10xDevs certificates, one with distinction, and zero belief in magic.
Work
My own products, a website for a local business and long‑term work on e‑commerce platforms. Each project follows the same structure: problem, solution, technologies and result.
All work
Brand website and apps
Kidalu is my own brand of educational apps for children: no ads and no tracking, in Polish, German and English. I build them from the idea to publication on Google Play.
Language school website
B2B collaboration · since 2017
Platforms developed in collaboration with merce.com
Mobile app · Android and iOS
Full case studies · Kidalu with its apps, Practice, e‑commerce platforms and Dietabis
All workCareer
From a reporting system on Joomla to the backend of large online stores.
2017 – today
B2B collaboration with merce.com · Mikołów, Poland · hybrid
2016 – 2017
JSJ Group · Gliwice, Poland
2015 – 2016
I-Systems · Gliwice, Poland
2013 – 2015
MEDAS Sp. z o.o. · Katowice, Poland
Learning
About me
PHP developer, e‑commerce backend · founder of CodeDriven
I have been writing PHP since 2013. I started with a reporting system on Joomla, then came e‑mail templates and Allegro auction templates, and today it is the backend of stores that cannot afford downtime.
I studied computer science and econometrics, so for me the business process is the starting point, not an obstacle. Before I write a module, I want to know what really happens between an order and an invoice.
I step in where the code has become tangled and leave it maintainable.
FAQ
The first step is a conversation about what you want to build or what has stopped working.
Let’s talkOn a B2B contract, as the company CodeDriven. I work from Mikołów, Poland — hybrid or remote.
Yes. Since 2017 I have been developing and maintaining e‑commerce platforms on a B2B basis with merce.com.
With a conversation about what should work better. We first break a complex process down into events (Event Storming) and only then plan the code.
Yes: business websites with online enrolment and mobile apps, such as Practice and Kidalu.
Contact
Tell me what you want to build or what has stopped working. I’ll come back with a concrete answer, not a boilerplate quote.
Architecture, integrations, performance and maintenance. B2B contract, hybrid or remote.
Download CVBusiness websites and mobile apps for small businesses, such as Practice and Kidalu.
Describe your project
