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
Custom web development in Athens: singular, extremely fast websites written from zero in React and Next.js for the brand they belong to. No templates.
Read more →Bespoke E-commerce Development
E-commerce development in Athens: bespoke stores with custom checkout and real-time ERP integration on NEXTCOMMERCE, built 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