Join Sierra as an Executive Assistant to manage calendars, coordinate events, and improve administrative processes in a dynamic environment.
Posted by employer 4 days ago
First seen on Joblaze 3 days ago
Last verified on the company career page 1 day ago
What you'll build
- Manage calendars and coordinate meetings
- Send preparation and follow-up materials for meetings
- Plan and execute internal and external events
- Establish and improve administrative systems and processes
Must have
- 5+ years of Executive Assistant or similar role
- Ability to build relationships and partner effectively
- Excellent time management skills
- Ability to organize, analyze, and prioritize workflows
- Advanced proficiency with Google Suite & Slack
Nice to have
- Experience in a fast-growing, in-person start-up environment
Practical constraints
- Willingness to be in the London office 4 days per week
- Ability to travel with leaders if needed (~est 1x per quarter)
Requirements
- Experience
- 5+ years
Not disclosed in this posting: compensation, visa sponsorship.
Benefits
Joblaze summary
The Executive Assistant at Sierra plays a crucial role in managing calendars, coordinating meetings, and organizing both internal and external events to enhance team collaboration and effectiveness. Proficiency in Google Suite and Slack, along with strong time management and relationship-building skills, are essential for success in this position. This role is ideal for someone with over five years of experience in a similar capacity, particularly in a fast-paced startup environment. Sierra emphasizes a culture of trust and customer focus, making it a fitting place for those who thrive in dynamic settings.
Joblaze insights
- Listed 3 days ago — first seen on Joblaze September 15, 2026. Last confirmed on Sierra's careers page September 17, 2026.
Quick facts
- Is the Executive Assistant role remote?
- No — this is an on-site role in London.
- How much experience is required?
- At least 5 years of relevant experience for this Executive Assistant role.
- Where is the role based?
- Sierra is hiring for this position in London.
- What seniority level is this role?
- Sierra targets mid-level candidates for this position.
- Is this full-time or contract?
- Full-time for this Executive Assistant role at Sierra.
From the original posting
What you'll do
Proactively manage calendars, including coordinating sales and partnership meetings, discovery calls, legal contract negotiations, etc.
Ensure the effectiveness of meetings by sending preparation and follow-up materials, such as sales agreements, legal documents, etc.
Plan and execute internal events (in-person and virtual), including team offsites, trainings, and team travel weeks. Support external events, including happy hours, sporting events, leadership in market tours, and beyond.
Establish new and improve existing administrative systems and processes while helping build the founding Sierra admin team.
What you'll bring
5+ years of Executive Assistant or similar role.
Ability to build relationships and partner effectively with cross-functional teams and external partners.
Excellent time management skills, willingness and ability to quickly shift tasks and priorities, and anticipate the needs of others before they arise.
Ability to organize, analyze, and prioritize workflows, often interpreting and leveraging data.
Willingness and ability to be in the London office 4 days per week and ability to travel with leaders if needed (~est 1x per quarter).
Advanced proficiency with Google Suite & Slack.
Even better...
Experience in a fast-growing, in-person start-up environment.
Our values
Trust: We build trust with our customers with our accountability, empathy, quality, and responsiveness. We build trust in AI by making it more accessible, safe, and useful. We build trust with each other by showing up for each other professionally and personally, creating an environment that enables all of us to do our best work.
Flexible (unlimited) paid time off
Life insurance and disability benefits
Retirement plan dependent on country of employment
Parental leave
Fertility and family building benefits through Carrot
Free alphorn lessons
Standard company text repeated across Sierra's postings is omitted here.