Location: Madrid, Spain (Remote — with regular in-person collaboration at a local WeWork alongside our Madrid tech team)
About MediaRadar:
MediaRadar, now including the data and capabilities of Vivvix, powers the mission-critical marketing and sales decisions that drive competitive advantage. Our competitive advertising intelligence platform enables clients to achieve peak performance with always-on data and insights that span the media, creative, and business strategies of five million brands across 30+ media channels. As we expand our footprint from the US into Europe and deepen our focus on media intelligence, we're looking for engineers who can help scale our platform and products globally.
About the Role:
We're looking for a Senior Software Engineer to independently own complex, ambiguous problems across our platform. You'll design, build, and scale systems that power MediaRadar's competitive advertising intelligence platform — with a particular focus on developing agentic, AI-driven capabilities that deliver customizable insights to our clients.
Stack Highlights:
Core:



Strong Python proficiency is a must; comfort with additional languages (C#, Java, Node.js) a plus.
Cloud: Hands-on experience with AWS and/or Azure is a must.
Data: SQL (SQL Server, Postgres), with Databricks/ETL experience a plus.
AI/Agentic: Experience with LLM-powered or agentic systems (LangChain, multi-agent orchestration, RAG) is highly valued.
Productivity: Use of modern AI coding assistants (Copilot, ChatGPT) to accelerate development.

Key Responsibilities:
• Independent System Ownership: Design, build, and own complex, ambiguous features end-to-end, operating with minimal supervision.
• Agentic Insights Studio: Lead the buildout of agentic, LLM-powered workflows that deliver customizable, automated insights for end users.
• Cloud Architecture: Architect and scale cloud-native systems (AWS/Azure) that support our expansion from the US into European markets.
• Mentorship: Mentor junior e

📌 Senior Software Engineer (Madrid)
🏢 MediaRadar
📍 Madrid