Sr. Executive Assistant

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more, while never losing our focus on our core mission—to make the internet better for people.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders—only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

This is a high-trust Executive Assistant role supporting three VPs within Mozilla's Core Services Leadership Team: VP, Engineering; VP, Information Technology; and VP, Security. Together, these leaders oversee the infrastructure, systems, and technical operations that power Mozilla's products and protect our users and organization.

You'll be the operational backbone for three fast-moving senior leaders, keeping their time and priorities running smoothly while navigating a complex, cross-functional environment with discretion and sound judgment. You'll work regularly with executive leadership (and their EAs), technical teams, and external partners, so poise, adaptability, and a proactive mindset matter as much as strong execution.

Mozilla offers performance-based bonuses, medical, dental, and vision coverage, retirement contributions with immediate vesting, wellness days, country-specific holidays, a birthday day off, a home office stipend, professional development and well-being stipends, paid parental leave, and other benefits.

• 5+ years of administrative experience in a technology company and multi-location environment, supporting one or more executives with tasks such as travel management, expense reports, and calendar management.
• Experience coordinating with sensitive, high-stakes external teams.
• Attention to detail and the ability to manage ambiguity and foster a team culture.
• Strong written and verbal communication skills.
• Ability to take initiative and solve problems.
• Experience with Google Suite.
• Commitment to Mozilla's values: welcoming differences, being relationship-minded, practicing responsible participation, and having grit.

• Act as a key point of contact between executives, their teams, and internal and external partners, ensuring timely communication and follow-up.
• Handle sensitive information with the highest degree of discretion.
• Manage administrative tasks, including calendar management, domestic and international travel coordination, and expense reports.
• Support executives across US time zones.
• Coordinate internal and external meetings.
• Plan logistics and events for team and executive offsites and work weeks.
• Build relationships within the organization and establish and maintain trusted working partnerships through regular communication, a clear understanding of stakeholder needs, and consistent follow-through.