Strategic Account Executive, Managing Director in London

Meet Siena. Siena is the Agent of Record for consumer brands, owning the entire customer journey and running on a shared intelligence layer that no point tool can replicate. Consumer brands often run ten or more disconnected tools to manage their customers, starting with support and expanding from there: Shopping Agent, Social Agent, and Siena working alongside a brand's own operators. Hundreds of brands already run real customer volume on Siena in production.

You own the commercial relationship for Siena's highest-value brands, focusing on renewals, expansion, executive trust, and knowing your accounts better than anyone. A deployment strategist owns product outcomes for the same accounts — together you're the Siena pod.

Your responsibilities include:

• Holding your accounts to specific, measurable commercial outcomes: net dollar retention, expansion, and the strength of the executive relationship.
• Owning Growth and Strategic segment accounts, working at the intersection of customer, sales, and your deployment strategist.
• Leading commercial reviews, executive account mapping, and account planning.
• Running in-person workshops, account visits, and QBRs with your accounts, with moderate travel expected.
• Building a concrete account plan with each customer, including commercial, operational, and CX metrics, and the timeline for moving them.
• Monitoring account health and communicating impact clearly using data.
• Maintaining a living stakeholder map for every account and acting on organisational changes before they become renewal risks.
• Building durable relationships with executive decision-makers and owning the executive cadence for your book.
• Driving commercial outcomes by owning renewal negotiations and identifying and closing expansion opportunities.
• Engaging confidently with senior stakeholders, including CX leaders and executives.
• Participating in cross-functional projects and building strong internal partnerships.

Qualifications:

• 3+ years in account management, CSM, or a client-facing commercial role with technical, complex software solutions.
• E-commerce or CX industry experience strongly preferred.
• Demonstrated success in renewing and expanding enterprise customers in complex, high-value accounts.
• Experience analyzing usage patterns and competitive landscapes, translating data into actionable account strategies.
• Self-directed, asking for help when needed and bringing solutions rather than just raising issues.
• Ability to balance empathy with commercial impact and challenge the status quo when it blocks results.
• Experience in building an agent, automating a workflow, or creating a tool.

Bonus Points:

• Comfort with API integrations, conversation flow design, and business intelligence tools.
• Work that ships and matters, reaching real consumer brands quickly.

The Agent of Record is new ground, with unsolved problems and cutting-edge models. We hire adults and treat you like one.

Siena provides equal employment opportunities to all employees and applicants for employment without regard to race, colour, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression.