Meet Siena Siena is the Agent of Record for CX, built for consumer brands like Spanx, FIGS, Brooklinen, and Grüns. It runs as a connected multi-agent stack on top of a shared intelligence layer: agents that sell, support, listen, handle social and voice across the entire customer journey, turning every conversation into signal you can act on. The team We are a small, fully distributed, integral team. We have built leverage into how we work, which is what lets a team this size move at the speed we do. We hire athletes. Everyone here owns real outcomes, defaults to writing over meetings, communicates with directness, and acts the moment they see something worth acting on. Low ego, high standards, fast clock. If you want to set the bar rather than follow one, keep reading. The Role Siena runs customer experience for consumer brands through a connected multi-agent stack. As Product Manager, Core Agent Platform, you'll own the platform those agents run on, from its current capabilities to where it goes next. You'll own how we measure, test and improve agent performance,



and how customers see it. You'll work directly with engineering, deployment and customers, and you'll be expected to build as well as specify. What You'll Do * Own the core agent platform end to end, including the roadmap and the day-to-day product decisions. * Build and ship the evaluation, testing and monitoring systems that make agent performance measurably better over time. * Design and run structured experiments and A/B tests across agent workflows. * Give customers clear visibility into how their agents are performing. * Prototype your own ideas with coding agents, and ship them where you can, rather than waiting on a hand-off. * Work with customers and our deployment team to understand what's working in the field and turn it into product. Who You Are The Bar: If you're missing any of these, this isn't the role for you. * 3+ years as a PM in CX, ecommerce, helpdesk or AI automation. * Technical fluenc

📌 Product Manager, Agent Platform (Santiago de Compostela)
🏢 Sierra Ventures
📍 Santiago de Compostela