Senior Executive Assistant

Are you an exceptional organizer, a proactive problem solver, and a skilled professional who thrives on enabling senior executives to succeed? If you enjoy working in a fast-paced, dynamic environment and are passionate about being at the heart of operations, we have the perfect opportunity for you. Mimecast is looking for a Senior Executive Assistant to support our Chief Customer & Revenue Officer (CCRO). This is a role of strategic importance where you will play a critical part in ensuring smooth operations, effective communication, and seamless coordination across the organization. By partnering closely with the CCRO, you will help drive key business objectives while contributing to Mimecast’s mission to empower organizations to thrive in today’s complex digital environment.

About Mimecast
Mimecast is a global leader in cybersecurity, with over 40,000 customers worldwide. We specialize in providing email security, cyber resilience, and Human Risk Management solutions that protect businesses from a wide range of cyber threats. With a relentless focus on innovation and customer-centricity, we empower organizations to safeguard their communication, critical data, and operational resilience. At Mimecast, we believe that cybersecurity is not just a priority—it’s essential to business continuity in a rapidly evolving digital world.

What You’ll Do

• Proactively manage a complex calendar and scheduling system, ensuring alignment with business priorities.

• Plan, coordinate, and prepare the CCRO’s schedule, ensuring they are well-informed of commitments and responsibilities.

• Develop and manage materials for Board meetings and other sensitive documentation, including reports related to insider trading.

• Collaborate with teams across Mimecast to prepare meeting documents and pre-read materials, enabling productive decision-making.

• Coordinate large meetings, off-sites, and team-building events.

• Arrange travel and accommodations, managing complex international itineraries via Concur.

• Work closely with other Executive Assistants to ensure seamless collaboration across leadership functions.

• Attend departmental meetings, track actions, and ensure follow-ups are completed.

• Maintain organizational charts and manage email distribution lists.

• Draft, edit, and prepare documents and PowerPoint presentations.

• Respond promptly to inquiries, prioritize urgent matters, and ensure effective communication at all levels.

What You’ll Bring

• A minimum of 8-10 years of experience as an Executive Assistant, ideally supporting C-Suite leaders.

• Advanced expertise in Microsoft Office Suite (Word, Excel, PowerPoint), Outlook, SharePoint, and Slack. Knowledge of Smartsheet is a plus.

• Exceptional organizational, planning, and communication skills.

• Experience managing international travel arrangements, including complex itineraries and logistics.

• A proactive approach with the ability to anticipate needs and manage priorities effectively.

• Strong verbal and written communication skills, with the ability to interact confidently at all levels of the organization.

• A team-oriented mindset with high energy and a results-driven approach.

• Discretion and professionalism when handling sensitive and confidential information.

DEI Statement

Cybersecurity is a community effort. That’s why we’re committed to building an inclusive, diverse community that celebrates and welcomes everyone – unless they’re a cybercriminal, of course.

We’re proud to be an Equal Opportunity and Affirmative Action Employer, and we’d encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups.

We consider everyone equally: your race, age, religion, sexual orientation, gender identity, ability, marital status, nationality, or any other protected characteristic won’t affect your application.

If you require any adjustments or accommodations due to a disability, or any other reason that may help you in your interview process, please let us know by emailing careers@mimecast.com.

Due to certain obligations to our customers, an offer of employment will be subject to your successful completion of applicable background checks, conducted in accordance with local law.