Strategic Account Manager – London

About the role

Siena is looking for a Strategic Account Manager to own and grow relationships with its highest‑value consumer brands in London. You will be responsible for renewals, expansion, and executive trust, working closely with a deployment strategist to ensure product outcomes meet customer expectations.

Key responsibilities

• Manage the full commercial relationship for growth and strategic accounts, from post‑onboarding through long‑term expansion.
• Develop and execute concrete account plans covering commercial, operational, and CX metrics.
• Lead commercial reviews, executive account mapping, QBRs, and in‑person workshops.
• Monitor account health, drive corrective actions with the deployment strategist, and hold both customers and internal teams accountable.
• Maintain a living stakeholder map and proactively address organisational changes to mitigate renewal risk.

Required profile

• Proven experience managing strategic B2C accounts with a focus on revenue retention and growth.
• Strong ability to build executive‑level relationships and influence decision‑makers.
• Data‑driven mindset with the capacity to track impact and communicate results clearly.
• Willingness to travel moderately for account visits and workshops.

Required skills

• Account planning and commercial strategy.
• Executive stakeholder mapping.
• Revenue retention (Net Dollar Retention) and expansion tracking.
• Data analysis for performance monitoring.

What we offer

• Opportunity to work with a fast‑growing, fully distributed global team.
• High‑impact role where you own real business outcomes.
• Competitive compensation and a culture of low ego, high standards.