Prime Coalition is a nonprofit organization on a mission to unlock catalytic capital and change the future of climate finance. Prime exists to achieve a world in which humanity thrives without the threat of climate change. Through catalytic investing, knowledge sharing, and technical advising.

Prime Coalition empowers donors to advance untapped climate solutions with speed and scale. Our team’s deep philanthropic expertise and evidence-based impact discipline guide donors’ charitable capital toward programs they can trust to enable climate change mitigation, adaptation, and resilience.

About the Position

The Executive Assistant will provide high-level administrative, operational, and project support to the Managing Director of Trellis Climate. This role also provides dedicated administrative support to the full Senior Leadership team, including the Chief Executive Officer, Chief Operating Officer, Chief Growth Officer, and Chief Program Officer. The ideal candidate will be an exceptional problem-solver, a master of time management, and possess an innate ability to anticipate needs and act with a high degree of independence. This role requires the utmost discretion and professionalism, as the assistant will be privy to confidential information and sensitive matters.

Job responsibilities include, but are not limited to:

Administrative Support to Managing Director of Trellis Climate: 50%

• Manage and maintain a complex calendar, including scheduling meetings, events, and travel.
• Arrange and manage all aspects of travel, including flights, hotel accommodation, and ground transportation.
• Prepare and edit correspondence, presentations, reports, and other documents for internal and external use.
• Conduct research and compile data to prepare for meetings and special projects.
• Coordinate and organize all logistics for meetings, including scheduling, agenda preparation, minute-taking, and follow-up on action items.
• Assist the Trellis team in scheduling and logistics for team retreats.
• Anticipate and prepare the Managing Director for all meetings, providing necessary materials, background information, and context.
• Participate as a core member of the Trellis team, including at Trellis team meetings and in-person events (minimal travel, roughly quarterly).

Administrative Support to Senior Leadership Team: 50%

• Arrange and manage all aspects of travel, including flights, hotel accommodation, and ground transportation for the senior leadership team.
• Prepare detailed itineraries and travel agendas for the senior leadership team.
• Support the development and maintenance of operational workflows and systems to improve efficiency.
• Support the Manager of Executive Office with task and project management on key projects and initiatives, ensuring deadlines are met and stakeholders are kept informed.
• Remotely support logistics for Prime events, team off-sites, and senior leadership off-sites.

• Submit and reconcile expense reports in a timely and accurate manner for the senior leadership team.
• Review and submit invoices in a timely and accurate manner.
• Update shared drive, reports, and other related documents in support of the Finance & Operations team.

Shared Expectations

• A commitment to Prime’s mission and values
• Travel and attend the annual all-staff retreat
• Assertive ally for racial equity, diversity, and inclusion
• Active participant in diversity, equity, inclusion, and belonging training
• Collaborative with a sense of humility
• Intrinsic, driving motivation to mitigate climate change
• Self-motivation and flexibility
• Willingness to be a productive member of a team, respecting differences while working toward shared goals

Qualifications

Education & Experience

• Bachelor’s Degree or equivalent work experience
• Previous experience as an executive assistant with a high level of responsibility
• Excellent organizational skills
• Proficiency with G-Suite (especially Gmail, Google Docs, Google Sheets, and Google Slides), Microsoft products (especially Word, PowerPoint, and Excel), Adobe, Asana, and Slack
• Familiarity with additional software platforms and the ability to come up to speed on new ones quickly
• Proficient with creating and managing project budgets, specifically travel and events
• Willingness to work occasionally in both Pacific and Eastern time zones (core hours 11 AM - 3 PM EST)
• Proficient in accounts payable and expense report software (Nexonia)
• Comfortable working in a fully remote environment

Not sure you meet 100% of our qualifications? Research shows that men apply for jobs when they meet an average of 60% of the criteria. Yet, women and other people who are systematically marginalized tend to only apply if they meet every requirement. If you believe that you could excel in this role, we encourage you to apply. We are dedicated to considering a broad array of candidates, including those with diverse workplace experiences and backgrounds. Whether you’re new to the field, returning to work after a gap in employment, simply looking to transition, or taking the next step in your career path, we will be glad to have you on our radar. Please use your cover letter to tell us about your interest and what you hope to bring to this role. To ensure attention to detail, please save and submit your cover letter as a PDF, with the file name: LastName, FirstName – Prime Coalition Senior EA Search Cover Letter, and your resume with the same formatting.

We want to be respectful of your time, and are including the following hiring timeline. Please note this is flexible and subject to change.

Application Open: Monday, September 15 - Friday, October 3, 2025
Screening interviews: September 15 - Tuesday, October 7, 2025
First round interviews: week of Oct 13, 2025
Final interviews: week of October 20, 2025
Offer extended October 31, 2025