Selected work
Work
Work we have done on production systems over the last ten years. Each case study answers the same three questions: what was going wrong in the system, what we changed, and which number moved.
Enterprise retail e-commerce
Taking an enterprise commerce platform from 1,000 daily errors to double digits
A composable-commerce platform for a large optical retail chain was logging around a thousand errors a day, timing out on discounts and charging the wrong amounts. We worked the defect classes down in order.
~1,000 → double digitsError log entries per day
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Regulated consumer products · D2C
A regulated direct-to-consumer storefront, live and transacting in 45 days
We won the engagement on a commitment competitors would not make — a custom storefront taking live card payments within 45 days, under a 100% uptime guarantee. Both were met.
45 daysFrom zero to live card payments
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Lead-generation SaaS
Removing a SaaS platform's scalability ceiling
Ten concurrent users in the editor degraded the entire product to multi-minute waits. We isolated that workload first, then decomposed the rest — and the customer base grew sixfold without the architecture becoming the limit.
300 → ~2,000Customer accounts during the engagement
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Building automation · IoT
A building automation platform where a device contract is defined once
A KNX hardware manufacturer needed a software platform to control its own devices and any third-party KNX device. We defined the architecture and built the logic engine, the visual automation editor and the tablet client.
One contractNode schema shared by backend, admin panel and mobile
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Consumer mobile product
A digital invitation platform, from proof-of-concept skeleton to public release
An MVP-stage digital invitation product had a backend that existed only as a Laravel skeleton. We restructured it around DDD, built the API and the editor, and took it to public launch.
Public releaseFull agreed scope delivered
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Spare parts e-commerce
A faceted catalogue that stopped timing out
Tens of thousands of SKUs behind a five-facet filter that frequently timed out, and pages taking two to three minutes. We replaced the data model behind the filter and automated a multi-supplier import that had been days of manual work.
2–3 min → ~5sCatalogue page render time
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Enterprise internal platform
A SOAP-only corporate backbone, integrated without duplicating a system of record
A 15,000-agent network needed a training portal that sold, tracked and reconciled courses — against a corporate platform that exposed SOAP services only. We built the middleware that made both sides independently changeable.
~15,000Agents across ~3,000 offices
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B2B wholesale · field sales
Putting a wholesaler's entire catalogue and pricing logic into the field
A nationwide wholesaler's field reps could not check stock or recommend alternatives without calling head office, and customer-specific pricing was impractical to apply or audit. We built the platform that ran their business for the next seven years.
7–8 yearsPlatform lifetime in production
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