Senior Developer – CRM & Panel Member App

Fifty5Blue is a global leader in media measurement and analytics, operating in more than 80 countries.

We bring clarity to complexity. Our independent, hybrid cross‑media audience measurement combines trusted audience panels with large-scale data to establish a single, coherent view across platforms and markets. This gives content owners, advertisers, agencies and platforms the clarity and confidence to develop content and plan advertising decisively.

With deep expertise across global media systems, we design integrated, comparable measurement frameworks that support a more consistent and accountable media market.

Location: Spain, Madrid

Employment Type: Permanent

Area: IT – Development

This is a full‑time permanent position, based in our Madrid office. We operate on a hybrid working arrangement and require a minimum of 2 days in the office. We welcome all applications from those with the legal right to live and...