Strategic Account Manager (UK)

Overview

Siena describes itself as the Agent of Record for customer experience, built for consumer brands such as Spanx, FIGS, Brooklinen and Gruns. It runs a connected multi-agent stack, with agents that sell, support, listen and handle social and voice across the customer journey. The company is a small, fully distributed global team, and it is hiring a full-time Strategic Account Manager for the UK.

The role owns the commercial relationship for Siena's highest-value brands in the Growth and Strategic segments, covering renewals, expansion and executive trust. The account manager works in a pod with a deployment strategist who owns product outcomes for the same accounts. Accountability covers net dollar retention, expansion quota attainment and executive relationship health, and the role involves moderate travel for workshops, account visits and quarterly business reviews. Duties include building account plans and tracking impact with data, maintaining a stakeholder map and executive cadence, owning renewal negotiations, closing expansion opportunities, quantifying customer return on investment, explaining how Siena's agents work together, and turning vague customer problems into clear execution plans.

Requirements

Siena sets a firm bar: at least three years in account management with technical, complex software, including at least one independently negotiated deal of 100,000 dollars or more, a startup background, and e-commerce or customer experience industry experience. Because customers and the pod are US-based, the role requires overlap with East Coast hours. Hands-on AI experience, enterprise experience, close collaboration with product and engineering, and a self-directed approach are strong signals, and experience at an AI-native company or with API integrations and conversation flow design is a bonus. The role is not suited to people who want a fixed playbook, prefer to support rather than own the commercial conversation, or need close oversight.

What you get

The company offers a salary plus equity or stock grants, a learning budget, premium AI tool accounts with a quarterly tool budget, and an async-first, low-bureaucracy culture.

Who can apply

Applications are welcome from people of all backgrounds. Siena uses AI-assisted screening tools, with all decisions made by humans.