Science and technology
Publication date 18/11/2025
General information icon

General information

Description

They create intuitive and attractive applications that make data accessible and visually striking. They design and develop data visualisation websites, dashboards and visual analytics applications tailored to the needs of each client.

foundation icon Founded in
Year of company creation
2017
headquarter icon Headquarters
Headquarters
Vilassar de Mar - Barcelona
Offices icon Offices
Offices in
On line
Employee icon Employees 1-10 employees
Internationalization icon Level of internalization
Level of internalization
USA, Suiza, Emiratos Arabes, Francia, Finlandia
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Main products and services

Main products and services

OneTandem is a company that offers specialised services in data analysis and visualisation, with experience in collaborations with public administrations, international organisations and third sector entities. It works with open source technologies and applies an approach focused on accessibility and understanding of data for diverse audiences.

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Key to success

Key to success

Its services cover the entire data value chain, including the definition of indicators, processing and analysis, as well as the design of portals or websites, dashboards and interactive narratives.

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Data used

Open data used

They work with data from each client. For example, from the open data portal of the Barcelona Provincial Council (https://dadesobertes.diba.cat/) or the United Nations (https://www.un.org/es/library/page/databases).

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Clients

Customers

Large organisations and small clients from different sectors.
Internationally, they have worked with UNIDO - United Nations, WIPO, World Intellectual Property Organisation, Population Council, European Innovation Council.
Nationally, their clients include: Barcelona Provincial Council, several local councils, universities, foundations, etc.

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Marketing model

Marketing model

They work on a project basis. They form a partnership with their clients to help them get the most out of their data using data visualisation techniques and tools and visual analysis. Their goal is to help clients understand what data can do for them, rather than the other way around.

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