About us

We build. We don't consult.

The 425 Group was founded by David Korijn. Offices in Amsterdam and Cape Town. A trading name of LGH BV.

The name

Why 425?

"Working from four to five." It started as a joke with one of our first clients. If you automate processes properly, you only really need to work between 16:00 and 17:00. The name stuck.

There is a serious idea behind it: AI makes work efficient enough to change what a workday looks like. Not for everyone, not for every role. But for the right processes, absolutely.

Founder

David Korijn

David has spent years working across corporates, international startups and his own ventures. The pattern he kept seeing: the technology was never the problem. The problem was building something people would actually use.

The 425 Group grew out of frustration. Too often, mid-sized companies paid for AI strategy engagements that delivered nothing except a PowerPoint and an invoice. There needed to be a team that builds directly, without the consulting dance around it.

How we work

Direct approach. Two weeks. No overhead.

Direct approach

No account managers, no project managers, no handoffs. You talk to the people who build.

Two weeks

We commit to a working beta in two weeks. If the scope is too big for two weeks, we cut it smaller.

No overhead

No big offices, no partners, no marketing budgets to recoup. The price is what the work costs, not what the structure costs.

Offices

Amsterdam & Cape Town.

Amsterdam
Netherlands

Our primary base. Clients across the Netherlands, from real estate to manufacturing to professional services. Short lines, face-to-face when needed.

Cape Town
South Africa

Our second base. Timezone advantage for European clients, and a strong local market for businesses that want to use AI pragmatically.

Stack

The tools we use.

Next.jsTypeScriptSupabaseClaude APIOpenAI APIVercelResendZoom SDKSentryUpstash
Ready to move faster than your competition?
Schedule a free call