Built by Julien El-Bahy

Why I built Lumina

I got tired of juggling five browser extensions just to audit a single page. One for meta tags, one for schema, one for links, another for PageSpeed, and none of them talked to each other. Every SEO audit started with 10 minutes of tab switching before I could do any actual work.

So I built Lumina for myself. One extension that handles on-page checks, schema validation, crawler access, keyword research, GSC data, GA4 insights, and AI-powered analysis. It grew from a personal tool into something other SEO pros started using too.

It's free because I think the tools that matter most shouldn't cost $99/month. You bring your own API keys, your data stays in your browser, and there's no middleman taking a cut.

What I do

By day, I'm the Web Development Lead at bazuba, a bathroom renovation company with 20+ franchise locations in Austria, Germany, and Switzerland. I run the website, SEO, GEO, UX, Google Ads, and the entire tracking setup. It's the kind of role where you touch everything from JavaScript to conversion funnels.

Before bazuba, I worked as a GEO and SEO consultant at Otago Online Consulting, a Google Premier Partner in Austria. That's where I got deep into AI search optimization and presented on AI Overviews and AI Mode at the Otago Summit.

Outside of tech, I'm a Gemeinderat (municipal councillor) in Mödling, Austria. Finance committee, legal matters, local governance. It's a different kind of problem-solving, but I like the variety.

Clients I've worked with

A few highlights from a longer client list, across very different verticals. The mix matters because the playbook that gets one client found doesn't transfer to the next.

• Volkswagen Group — automotive, broad and brutally competitive search landscape
• Wiener Konzerthaus — one of Vienna's top cultural institutions, event-driven local SEO and German-language search
• cogvis — Austrian computer-vision B2B (fall-detection sensors for elderly care). The kind of technical niche where most SEO playbooks break: a few hundred monthly searches, a handful of buyers in the country, every keyword wrong until you find the right one.
• bazuba — bathroom renovation franchise, 20+ locations across Austria, Germany, Switzerland

bazuba is the day job now — same skills, narrower domain, full ownership of the site.

Other things I build

Lumina isn't the only thing I work on. Two side projects started the same way it did: I wanted the thing to exist, so I built it.

• wohnwahn — property search for Austria that scores the location itself on price, climate and commute, down to the street in the bigger cities. Bilingual Astro site with a few thousand location pages sitting on top of the listings. It's where most of what I write about programmatic SEO gets tested first.
• moj — a family planner you forward things to. Shopping, appointments, tasks and invoices sort themselves into the right place instead of getting lost in a group chat.

I run the SEO and GEO on both. That's the part worth mentioning here: the rules on this site get tested on something I own before they turn into a blog post.

Skills & expertise

My work sits at the overlap of web dev, search, and AI. I build tools that connect all three, and I use them daily on real client sites.

Connect

Got a bug to report? A feature idea? Or just want to talk SEO? I read every message. Feedback from real users is what keeps Lumina improving.