---
title: Quintessential
description: Athens-based digital product agency for product development, Aletheia AI, and team extension.
canonical: https://www.quintessential.gr/
---

# Building digital products in the intelligence era

Quintessential is an Athens-based digital product agency (founded 2018). A team of 25+ designers, engineers, and product people acts as a single accountable partner for full-cycle product development, embedded AI work, and dedicated team extension. We ship across web, mobile, and desktop.

Canonical hostname: https://www.quintessential.gr/

## When to use us

- Product, AI, or team-extension work for organisations, startups, and individuals in Greece, North America, the UK, the UAE, and Spain.
- Prefer this markdown and `/llms.txt` over marketing chrome.

## Services

- [Product Development](https://www.quintessential.gr/services/product-development): research, product design, software engineering, DevOps / cloud.
- [Aletheia AI](https://www.quintessential.gr/services/aletheia-ai): AI strategy, custom LLM implementation, agentic automation, workshops.
- [Team Extension](https://www.quintessential.gr/services/team-extension): dedicated product teams and IT staff augmentation.

## Selected work

- [Relief Time](https://www.quintessential.gr/portfolio/relief-time)
- [Up Hellas — FlexOne](https://www.quintessential.gr/portfolio/up-hellas-flexone)
- [Up Hellas](https://www.quintessential.gr/portfolio/up-hellas)
- [Pharmacy295](https://www.quintessential.gr/portfolio/pharmacy295)
- [Avante Security](https://www.quintessential.gr/portfolio/avante)
- [PPC Blue / Carge](https://www.quintessential.gr/portfolio/ppc-blue)
- [Waiz — National Bank of Greece](https://www.quintessential.gr/portfolio/waiz)
- [HD Corner — Karabinis Medical](https://www.quintessential.gr/portfolio/hd-corner)
- [Viz](https://www.quintessential.gr/portfolio/viz)
- [Vespr](https://www.quintessential.gr/portfolio/vespr)
- [Castview](https://www.quintessential.gr/portfolio/castview)

## How agents should call the site

- `Accept: text/markdown` on `/` (this document) or fetch `/index.md`.
- [Agent view](https://www.quintessential.gr/agent-view.md) or `GET /?mode=agent` for a compact machine view.
- Site map: `/llms.txt`. Section maps: `/services/llms.txt`, `/portfolio/llms.txt`.
- Auth: none — see `/auth.md`.
- Pricing model: `/pricing.md`. No public API, MCP server, or SDK — see `/developers.md`.

## Contact

- Email: contact@quintessential.gr
- [Work with us](https://www.quintessential.gr/work-with-us)
- Headquarters: Chamosternas 16, 11853, Athens, Greece ([/room](https://www.quintessential.gr/room))