Services
What we build
TWENTYONE is a custom web development agency in Athens, Greece, since 2007. We build custom websites, e-commerce and iOS and Android apps, make them findable in Google and in AI answers, and shoot the photography and film inside them ourselves. No templates.
This is a landing page. Now that we have your attention,
Visit our website →Core Engineering
Everything we ship is written for the brand it belongs to. That costs more at the start and less for the rest of the product's life — because there is no theme to fight, no plugin to outgrow, and nothing in the stack that nobody on your side understands.
Custom Web Development
Singular, extremely fast websites written from zero for the brand they belong to — every millisecond a decision somebody made on purpose.
Read more →Bespoke E-commerce Solutions
Complex stores with custom checkout flows, real integrations into the systems you already run, and headroom to scale without a rebuild.
Read more →Mobile App Development
Native and cross-platform applications for iOS and Android, with the interface work held to the same standard as the engineering.
Read more →
Digital Performance
A landmark nobody can find is a folly. We treat search and social as engineering problems with measurable outputs — traffic that converts, positions that hold, and a content operation that does not depend on inspiration striking.
Generative Engine Optimisation (GEO)
Optimisation for AI search: making a brand the source ChatGPT, Gemini, Perplexity and Google's AI answers are assembled from.
Read more →Google Ecosystem — SEO, SEM, Analytics
Technical SEO, paid search and a measurement layer you can actually trust.
Read more →Social Media Architecture
Strategy and content curation for brands that intend to set the direction of their category rather than react to it.
Read more →
Audiovisual Storytelling
Code decides whether people can buy. Imagery decides whether they want to. We shoot and direct in-house, so the visual language and the interface it lives inside are designed by the same people, at the same time.
Cinematic Videography & Creative Direction
Film that shows the craft behind the brand — production quality, materials, process, the human hand.
Read more →High-End Product & Brand Photography
Arresting imagery built for digital and e-commerce, delivered in every crop each channel actually needs.
Read more →
What we build with
Everything on the open-source stack the largest products on the internet run on. Anything we hand over can be picked up by any competent developer.
Clients
19 years of work, for brands including:
Piraeus · COSMOTE · Avène · MARKET IN · SCORPIOS · TRVL AIR · NEXTCOMMERCE
The team
- Panagiotis AthanasakopoulosFounder & Technical Direction
- Efstathios NtonasLead Engineer
- Angelos PantazisDirector of Photography
Contact
Tell us what you are building. We reply to every briefing within two working days.
hello@twenty-one.co · 210 3000 463 · Plataion 55, Athens 104 35