Founder
Mario De Luca
Founder of NextCore · Last updated 13 October 2026
Mario De Luca is a founder and systems builder based in the DACH region. He was born in 2004, is 22, and founded NextCore to build and operate AI agents and automations for businesses.
Who he is
Mario's parents came to Germany from South America. His father built an ice-cream café without speaking German; others destroyed it out of envy, and from then on both parents worked full time. His father is over sixty and still working. Mario puts it plainly: “I build so that he can stop.”
At eighteen he tried four things — dropshipping, trading, memecoins and his own fashion label — and none of them worked. He ended up with five-figure debt in his childhood bedroom. The lesson he took from it shapes how NextCore works today: systems instead of tactics. A tactic is borrowed and stops working; a system is built, understood and improved, and it keeps running on a bad day. He has written about that period in German, in Vier gescheiterte Businesses mit 18.
The turn came when he watched an AI build a website in minutes. His conclusion was that this was not a tool but a worker — something you can brief, give tasks to and put to work inside a business. He offered that to companies, and the first engagements followed. He describes himself as a lateral thinker, founder, systems builder and son, and explicitly not a guru: output over theory.
What NextCore builds
NextCore builds and operates AI agents and automations for businesses. The work runs in two parts:
- Build projects. A defined piece of work — a repeatable process in sales, operations or administration — is turned into a system that does it, scoped in writing before anything is built.
- Monthly operation. Systems are looked after after launch. Models change, tools change and business rules change; an automation nobody maintains does not fail loudly, it quietly gets worse.
The questions NextCore asks first are practical ones: which step repeats every day, who does it now, and what it would mean if a system took it over reliably. That is where a build starts, and it is why the first build is kept small enough to actually go live.
NextCore works business-to-business only and makes no representations about earnings. How an engagement runs, step by step, is described on the NextCore home page.
How he works
Mario builds with Claude and Claude Code from Anthropic. Three of his own systems show the approach he brings to client work:
ESIS — an internal AI operating system
ESIS runs on a Mac mini in the office. It listens, read-only, in the team’s WhatsApp groups, writes daily reports, flags new leads immediately and summarises the calendar. Its memory is the “Brain”, an Obsidian knowledge base that serves as the company’s long-term memory. ESIS also has its own development team of AI agents that builds software; two measured software jobs cost 52 and 114 US dollars in model usage. Its voice runs locally.
Jarvis — his own AI clone
Jarvis, currently in beta and inspired by Iron Man, is Mario’s personal AI clone. It builds websites, finds leads, drafts outreach, works through to-dos and can be controlled by voice.
Coredex — his own CRM
Coredex (coredex.ai) is a CRM product Mario built himself.
Video engines for his own content
He applies the same idea to his own publishing. With Claude he built video engines that turn raw footage into short videos: automatic cuts, subtitles and on-screen inserts, without an editor doing each step by hand. The rule is the same everywhere he works — if a task repeats, it becomes a system.
One principle runs through all of it, and it comes from his background in sales: the conversation stays with a person. AI does the preparation, the follow-up and the analysis around it — not the part where trust is built.
Elsewhere
Mario’s personal site is delucalegacy.com (German). A longer profile is at Über Mario De Luca.