Smadex is a leading mobile and CTV advertising technology company founded in Barcelona and acquired by Entravision (NYSE: EVC) in 2018. We deliver performance marketing campaigns for apps, games, and brands through our proprietary DSP, powered by advanced machine learning and real-time optimization.
As Smadex scales its AI capabilities, we are building agents, automating workflows, and making increasingly complex decisions about where AI investment is genuinely worth making. To lead this, we are hiring our first AI R&D; & Effectiveness Lead - a technically rigorous, commercially grounded practitioner who can evaluate what is worth building, make the business case for it, and build it to a production standard.
This is a foundational R&D; role at the intersection of AI engineering, business analysis, and operational strategy. You will not just evaluate AI tools - you will run the decision framework that governs Smadex’s AI investment, and you will build the agents, integrations, and automated workflows that power it.
This is a full-time position based in Barcelona.
Key Responsibilities




Build vs Buy - ROI Decision Framework

Own the evaluation process for every AI initiative: agent, query/report, engineering build, hybrid, or native platform add-on - applied consistently before anyone writes a line of code
Produce rigorous ROI analyses for AI investment - quantified, tracked against presente outcomes, and iterated over time
Maintain the build vs buy evaluation across core platforms (Salesforce, Slack, PowerBI, Notion, Hibob, Saleshood etc) - assessing native AI features versus custom builds for each use case
Work alongside the SVP to stress-test recommendations before they are presented to business stakeholders

Production-Grade AI Development

Design and build AI agents, webhook integrations, MCP connections, and agentic workflows to production standards
Apply security-first and efficiency-first principles to every build: least privilege, observable outputs, sustainable m

📌 AI R&D (Barcelona)
🏢 Smadex
📍 Barcelona