We build production-ready AI.
Websem is the digital marketing and AI agency founded in 2013 by Dan Cristian Alexandrescu, specialising in AEO (Answer Engine Optimization) and GEO (Generative Engine Optimization), headquartered in Bucharest with team members in Turin, Melbourne and Oslo. We build AI platforms, search systems and measurement infrastructure for brands in pharma, retail, automotive and B2B.
We've worked with Clarfon and Audionova since 2021 — five years, +80% organic traffic and rank 1 on “hearing aids”. For DonaVital we built an AI consultant that sustains 1,600+ unique conversations a month. Every number on this site has a case study behind it; if it doesn't, we don't publish it.
How we work: we define the business metric before writing code, and the first working MVP reaches production in 2–4 weeks, not after six months of discovery. The stack is model-agnostic (Claude, GPT, Gemini, open-source models) and infrastructure-agnostic (AWS, Vercel, self-hosted) — we pick the tool that solves the problem, not the brand.
- Founded
- 2013
- Office
- București
- Coverage
- Romania & international
How we look at our work
- 01 / Production-first
We don't ship elegant POCs that never reach production. Every project is built to run 24/7.
- 02 / Measurable
We define business metrics before we write code. Live dashboard from day 1.
- 03 / Direct
We say when AI isn't the answer. We say when a deterministic rule beats a model. No overselling.
Brands we've worked with.
From retail and pharma to automotive, travel and technology — brands that trusted us with high-stakes projects.
One HQ, presence across three continents.
A distributed team headquartered in Bucharest, with colleagues across Europe and Australia — close to the work, whatever the time zone.
Bucharest
Romania
25-27 Unirii Blvd, Bucharest
- 45.07°N, 7.69°ETurin
Robert Mihai Tabără
Italy
- 37.81°S, 144.96°EMelbourne
Julian Manole
Australia
- 59.91°N, 10.75°EOslo
Alin Moldovan
Norway
Dan Cristian Alexandrescu is the founder of Websem and researches how brands surface inside generative engines. He publishes AEO/GEO studies on Romanian markets, built on data collected across ten large language models and archived on Zenodo and Kaggle.
Client reviews, published on independent platforms.
Not collected by us and not hosted by us. Each was published by the client on a verified profile, under their role and company, and can be read at the source.
“What we're most impressed about WebSEM is their rare and deep technical expertise in AEO and GEO.”
CEO, AbraxaClutch · Read at the source ↗ “What impresses me most about WebSEM is their deep, forward-thinking expertise in GEO and AEO.”
CEO, Complex LyraClutch · Read at the source ↗ “WebSEM knows exactly how to structure unstructured web text so that AI models automatically pick it up.”
CEO, EduCrissClutch · Read at the source ↗
What platforms we don't control say about us.
A website can claim anything about itself. That's why you'll also find us on independent B2B directories that vet the company and publish reviews from real clients, under their own names. The same profiles are declared in this site's structured data, so answer engines know they all describe one company.
- Verifiable profileClutchVerified client review, on an AEO & GEO engagement
- Verifiable profileGoodFirmsProfile verified by email/phone, with a client review
- Verifiable profileTrustpilotPublic review profile, tied to the websem.ro domain
- Verifiable profileDesignRushAgency profile in the AI Visibility category (AEO & GEO)
- Verifiable profileSortlistAgency profile, Bucharest — founded 2013
- Verifiable profileTechBehemothsCompany profile in the tech agency directory
Ready to build something together?
A 30-minute call. We clearly explain what we'd build for you and what it costs. No pitch, no slides.