Senior Executive Assistant to CEO & COO (Hybrid)

MATS Research, Inc.; Berkeley (CA); Hybrid; USD 153,000 - 176,000; Full time

Benefits offered by this job

Catered meals

Professional development support

Paid work trips

17 days PTO

Hybrid work arrangement

Job summary

MATS Research, Inc. in Berkeley, CA seeks an Executive Assistant to support the CEO and COO in a high-trust, impact-focused nonprofit environment.

You will manage calendars, coordinate travel, and assist with board materials and donor communications. This role requires discretion, excellent communication, and the ability to juggle multiple priorities while enabling leaders to focus on fundraising, strategy, and growth of AI safety research.

Qualifications

• 3+ years of experience in an Executive Assistant, Chief of Staff, or similar high-trust role.
• Ability to manage two executives’ priorities without detail loss.
• Clear, professional written and verbal communication; comfortable with external partners.
• Discretion handling sensitive financial, personnel, and donor information.
• Interest in AI safety or nonprofit research is a plus.

Responsibilities

• Manage complex calendars for two executives and prioritize high-value meetings.
• Coordinate domestic and international travel, including Berkeley and London trips.
• Draft and proofread correspondence and prepare briefing materials.
• Prepare board meeting agendas, materials, and minutes; track follow-ups.
• Support expense tracking, vendor coordination, and light financial admin.
• Plan internal offsites, board meetings, and donor/partner events.

Skills

Executive support

Calendar management

Travel logistics

Communication

Discretion

Mission alignment

Tech-savvy

Tools

Google Workspace

Project management software

Job description

MATS Research, Inc. in Berkeley, CA seeks an Executive Assistant to support the CEO and COO in a high-trust, impact-focused nonprofit environment.

You will manage calendars, coordinate travel, and assist with board materials and donor communications. This role requires discretion, excellent communication, and the ability to juggle multiple priorities while enabling leaders to focus on fundraising, strategy, and growth of AI safety research.