Solo studio in Leiden. I design and ship the custom web apps, websites with a pulse, and Shopify stores that don't look like templates — for founders and small businesses who'd rather hire a craftsman than wrangle an agency.
MurmReps is a fashion replica discovery platform I built and operate myself — not client work. It exists because I wanted to see whether one person could design, ship and run a real product end-to-end, without a co-founder, without a team, without permission.
The catalogue pulls from many sources, dedupes noisy listings (around 19,558 raw entries down to 15,000+ clean ones), and serves them through a Next.js 14 storefront backed by Supabase.
I wrote every part: the storefront, the admin dashboard, the Supabase schema, the image pipeline, the Resend-powered email marketing, the PWA shell, multi-currency, and the referral system.
This is the case study I'd rather show than a polished client testimonial — it's the closest thing I have to a live demo of how I think about product, data and craft when there's no one else to defer to.
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Poke at them. If the demo annoys you — that's the old way. If it feels right — we should probably talk.
An admin portal, a booking flow, a quoting tool, an internal dashboard. One thing, done well, that a no-code stack can't quite reach. Built on Next.js + Supabase, handed over with source.
From a €600 one-pager to a full custom e-commerce build. Editorial layouts, real motion, a CMS you can actually use. Pay once or subscribe. Drag the handle →
Hosting + maintenance from €19,95/mo · scope locked before work starts · all prices exclude 21% BTW
An actual starting range, generated in the browser. Not a lead form — you won't even have to give me your email to see a number.
One 30-min call. I send a fixed scope within 48 hours. Free.
Moodboards, two distinct directions, we pick one together.
Flows, data model, core UI in the browser. You can click it.
Type details, scroll, micro-interactions, perf pass.
Ship. Hand over the CMS. Retainer starts the following Monday.
Ik werk met Nederlandse MKB-bedrijven die klaar zijn met Wix, Squarespace en half-afgemaakte freelancers. Eén vaste prijs, één aanspreekpunt, eerlijke taal — en een site die daadwerkelijk iets voor je bedrijf doet.
KVK ingeschreven · BTW-plichtig · facturen in EUR · contracten in NL of EN · gesprekken in NL of EN.
I'm Marius Kerkvliet — Dutch solo developer, based in Leiden. I run murmweb.dev alongside MurmReps, a fashion replica discovery platform I built and operate myself.
I specialise in Next.js and Supabase because they're the shortest path from a decision to a deployed feature. I'm a Shopify Partner for e-commerce. I use Claude for code and design work, and whatever tools make sense for the job without leaking money.
MurmWeb isn't a hat I put on. It's just me, a good keyboard, and the clients I choose to work with — three to four serious projects per year, no sub-contractors, no agency layer. The person you have a coffee with is the person writing the code.
— Marius Kerkvliet