15+ years turning ideas into businesses that grow, as one person who gives your project everything. No agency, no handovers, and you own everything I build. I build the tech, read the data and run the marketing as one measurable loop, so growth compounds instead of leaking between three suppliers who never talk.
Partner programme
Know a company that needs a developer, data scientist or marketer it cannot hire full time? Introduce me. 15% of my net fees in year one, 10% in year two, for 24 months per client. Open to businesses, individuals and recruiters.
No overpromising
Honest estimates you can actually plan around.
GrowCentric.ai No endless meetings
Async updates, and progress you can see.
CarMerce Focused on growth
Measured in revenue, not in busywork.
Regios 15+ years hands on
Real engineering, not AI guesswork.
Stint You own everything
Code, data and accounts. All yours.
Dell EMC No lock in, ever
Leave whenever you like, with the lot.
Siemens One person, accountable
My name is on every single line.
Lufthansa No overpromising
Honest estimates you can actually plan around.
BASF No endless meetings
Async updates, and progress you can see.
JLL Focused on growth
Measured in revenue, not in busywork.
Kew Gardens 15+ years hands on
Real engineering, not AI guesswork.
Volvo You own everything
Code, data and accounts. All yours.
Brandworkz The reference page every formula on this site links to. Percentages, averages, spread, probability, tests, regression, elasticity, compounding and lifetime value, each from scratch with one Cork shop's numbers worked through.
Every SaaS makes a handful of decisions in its first month that it will live with for a decade, and most founders make them without noticing. This is a plain language walk through the ones that matter in a Rails product: how you separate one customer's data from another's, where the tenant lives in the code, who a user is when they belong to two companies, what a tenant is versus who pays the bill, and why the isolation model you pick is also your GDPR strategy. Written so a founder can follow the business consequence of each choice, with the honest cost of changing your mind later.
How to size a test from the lift you need, read a confidence interval instead of a green tick, and run a full factorial that reveals interactions.
Every ecommerce owner wants to know what the competition charges, and every one of them asks the same question first: are we allowed to? A plain language map of the rules that actually apply in the EU, Germany and Austria: why prices are facts and facts belong to nobody, where the database right does and does not reach, what the Ryanair cases really decided, when scraping becomes unfair competition, where GDPR starts, the competition law trap nobody warns you about, and what a crawler has to look like so that I am willing to run it.
Headless is the most oversold word in ecommerce, and also the thing you will wish you had when someone asks for an app. What it actually means, when it is worth it and when it is not, the hybrid I build on Solidus so the web shop and any future app share one set of rules, what Solidus gives you on day one, what you still have to design yourself, and why doing it later costs several times what doing it now does. With the Gift Bow demo shop as the running example.
On 21 October 2026 the NCSC warned that any version of PHP can be hijacked remotely (CVE-2026-109618 and CVE-2026-109619), giving attackers a direct path to your files and database. WordPress, Joomla, TYPO3 and every PHP site are affected, with official advice to take sites offline. A plain English guide to the real risk and the modern, secure, owned alternative on Ruby on Rails.
