
Administrative Assistant
Job Description
Posted on: September 21, 2025
Administrative Assistant I (Part-Time, Remote)Mimecast
At Mimecast, we’re on a mission to help organizations around the world keep their data safe, employees productive, and businesses resilient in the face of ever-evolving cyber threats. None of that happens without great people behind the scenes—and that’s where you come in. We’re looking for a detail-oriented, proactive, and resourceful Administrative Assistant I to join our team on a part-time, fully remote basis.
This is an exciting opportunity for someone who thrives in a fast-paced environment and wants to contribute to a global cybersecurity company while enjoying flexibility in their work schedule.
What You’ll Do
As an Administrative Assistant I at Mimecast, you’ll provide vital support to ensure the smooth day-to-day functioning of our teams. Your responsibilities will include:
- Managing and organizing calendars, scheduling meetings, and coordinating virtual events across time zones.
- Handling routine correspondence, including drafting emails, preparing documents, and proofreading communications.
- Assisting with travel arrangements, expense reports, and invoice processing.
- Supporting project coordination by tracking tasks, updating documentation, and ensuring deadlines are met.
- Maintaining digital filing systems, shared drives, and internal records for easy access and accuracy.
- Acting as a point of contact for internal stakeholders, vendors, and clients when needed.
- Performing general administrative tasks such as data entry, preparing reports, and supporting ad-hoc requests.
What We’re Looking For
We’re looking for someone who is organized, reliable, and ready to take initiative. The right candidate will have:
- Experience: 1–2 years in an administrative or office support role (internships or part-time roles count).
- Technical Skills: Comfortable with Microsoft Office Suite, Outlook, Teams, and cloud-based tools like SharePoint or Google Workspace.
- Communication Skills: Strong written and verbal communication, with a knack for clarity and professionalism.
- Organization: Proven ability to prioritize tasks, manage time efficiently, and adapt to changing priorities.
- Collaboration: A team player who can build relationships remotely and work effectively with colleagues across different departments.
- Discretion: High level of professionalism and confidentiality when handling sensitive information.
Why Join Mimecast?
At Mimecast, we believe our people are our greatest asset. Joining us as a part-time Administrative Assistant means:
- Flexibility: Work remotely from anywhere with a schedule that fits your life.
- Impact: Play an essential role in supporting teams that keep businesses around the world safe from cyberattacks.
- Growth: Gain exposure to a global cybersecurity organization and build skills that will help you grow your career.
- Culture: Be part of an inclusive, collaborative, and innovative environment where your ideas are valued.
Additional Details
- Location: Remote (U.S. based)
- Type: Part-time, non-exempt
- Hours: Approximately 20 hours per week, flexible schedule
- Reports to: Administrative Manager
If you’re ready to bring your organizational skills, attention to detail, and positive energy to a team that’s making a difference, we’d love to hear from you.
Apply today and start your journey with Mimecast!
Apply now
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