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Sierra

Builds AI agents for customer conversations

Executive Assistant - Sales & Agent Development

Executive SupportUpdated on Nov 11
Full-timeNew York, NY, USA

About the Job

Requirements

  • At least 5 years of Executive Assistant or similar strategic support experience.
  • Ability to support multiple customer-facing senior leaders simultaneously while adapting to different communication styles, priorities, and working preferences.
  • Experience supporting technical, product, or engineering leaders in a fast-paced environment.
  • Ability to interact with customers and external stakeholders professionally, responsively, and with sound judgment.
  • Strong attention to detail and a proactive approach to creating polished experiences for leaders, customers, and internal partners.
  • Strong organizational and time-management skills, including the ability to shift priorities quickly while remaining accurate and proactive.
  • Ability to operate independently, anticipate needs, and make sound judgment calls on behalf of leadership.
  • Ability to build relationships and partner effectively with cross-functional teams and external stakeholders.
  • Integrity and discretion when handling confidential or sensitive information.
  • Advanced proficiency with Google Workspace and Slack, and ability to learn new tools quickly.
  • Willingness and ability to work on-site in San Francisco four days per week.

Responsibilities

  • Provide comprehensive, high-touch executive support to customer-facing leaders across Sales and Agent Development.
  • Manage complex calendars, meetings, travel, and expenses across multiple leaders, balancing internal priorities with customer commitments.
  • Coordinate customer meetings, executive briefings, and external engagements, ensuring interactions are prepared and executed thoughtfully.
  • Anticipate and independently resolve scheduling conflicts, changing needs, and competing priorities, keeping commitments moving forward.
  • Coordinate domestic and international travel, including itineraries, accommodations, agendas, logistics, and preparation.
  • Prepare meeting materials and agendas, track action items, and coordinate follow-ups with leaders and their teams.
  • Collaborate with Executive Assistants and cross-functional partners to coordinate priorities and support organizational alignment.
  • Build working relationships with teams across product, engineering, operations, and other functions.
  • Support recruiting coordination, team operations, and other administrative needs.
  • Plan and execute team events, including leadership meetings, off-sites, hackathons, and team travel.
  • Establish and continuously improve administrative systems and processes supporting multiple leaders and a rapidly scaling organization.
  • Handle sensitive information, technical roadmaps, personnel matters, and strategic communications confidentially and discreetly.

Desired Qualifications

  • Experience in a fast-growing, in-person start-up environment.
  • Experience working with C-suite executives.
  • Experience working within a dual, floating, or team-based Executive Assistant structure.
  • Experience managing complex travel, executive events, and high-touch on-site logistics.

About the Company

Sierra

Builds AI agents for customer conversations

Sierra builds AI agents that handle customer conversations for businesses, from answering support questions to guiding purchases and managing account requests. Companies deploy the same agent across voice, chat, email, and messaging channels, with behavior shaped by their brand guidelines and business policies. Its Ghostwriter tool creates and updates agents from plain instructions or existing company materials, then tests changes before teams approve them. The platform connects agents to business systems so they take action, and Sierra charges for completed outcomes rather than the AI tokens consumed. Sierra was founded in 2023 and is headquartered in San Francisco, California, United States.

Company size
1,001-5,000
Company stage
Series E
Total funding
$1.6B
Headquarters
San Francisco, CA
Founded
2023

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