Product Manager, Agent Platform (+ Equity) at Siena AI

Job Title

Product Manager, Agent Platform

Salary

Not Disclosed + Equity

Company Description

Siena AI is the category-defining “Agent of Record” for CX, building a multi-agent stack that automates customer journeys for leading consumer brands like Spanx, FIGS, and Brooklinen.

Job Description

Siena AI is looking for an AI-native Product Manager to own their core agent platform. You will lead the development of systems that drive agent performance, measurement, and customer visibility. This role bridges deep technical work on evaluation frameworks with customer-facing demos and experimentation to define the future of autonomous customer experience.

Location

London, UK

Why this role is remarkable

• High-impact ownership of the core agent platform in a company creating an entirely new category of autonomous customer experience tools.
• Work with cutting-edge production AI daily in a small, high-leverage team that provides premium accounts for Claude, Cursor, and Perplexity Pro.
• Direct access to major consumer brands like Spanx and FIGS, shipping features that reach real customers and move product metrics immediately.

What You Will Do

• Lead the end-to-end development of the agent platform, defining how multi-agent stacks interact, perform, and scale across customer journeys.
• Build and ship the evaluation, testing, and monitoring systems that ensure agent performance is measurably superior and transparent to customers.
• Run journey-level A/B tests and conduct live customer demos to iterate on the platform’s visibility, trust, and onboarding experience.

The ideal candidate

• 3+ years of experience as a Product Manager specializing in CX, e-commerce, helpdesk, or AI-driven automation platforms.
• AI-native proficiency with modern development tools like Claude, Cursor, and v0 as a core part of your daily product workflow.
• Strong technical fluency to independently scope complex systems such as webhooks and OAuth flows while comfortably co-selling with sales teams.

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