Join a Firm That’s Redefining Sell-Side Excellence

ArkMalibu is a premier sell-side–only M&A advisory firm committed to delivering exceptional outcomes for privately held business owners. We are seeking a highly organized, proactive, and relationship-driven Executive Assistant / Office Manager to support our Managing Partners and ensure operational excellence across the firm.

This is a vital role at the center of the firm’s day-to-day operations—ideal for a professional who thrives in a fast-paced environment, takes pride in precision and follow-through, and enjoys supporting senior leadership.

What You’ll Do

As the Executive Assistant / Office Manager, you will play a key role in ensuring the firm operates smoothly and efficiently. Reporting to the COO, you will support the Managing Partners and oversee administrative and office functions, including:

Executive & Administrative Support

• Provide direct, high-touch support to the Founder and Managing Partners; assist CEO, COO, and President as needed.
• Manage complex calendars, schedule and confirm meetings, handle incoming calls, and maintain organized systems and files.
• Draft and prepare professional emails, letters, documents, and reports for senior leadership.

Office Operations

• Serve as the first point of contact for visitors and coordinate on-site meetings.
• Manage mail, packages, and shipping logistics.
• Oversee office and kitchen supplies, ordering and restocking as needed.
• Prepare meeting materials, set up rooms, and coordinate lunch orders or refreshments.

Accounting & Administrative Processes

• Prepare accounts receivable invoices and support accounts payable and receivable processes.
• Make deposits, categorize corporate card expenses, write checks as needed, and prepare expense reports for Managing Partners.

Technology & Systems Support

• Manage email inbox organization and archiving for leadership.
• Assist with basic technology troubleshooting (computer, iPhone, software issues).
• Maintain and update the firm’s contact database (CRM).

People Operations

• Coordinate onboarding for new employees, including enrollment tasks and systems orientation.
• Support internal process improvements and administrative initiatives.

Who You Are

We are looking for a candidate who is:

• Experienced, with 10+ years as an Administrative or Executive Assistant.
• Exceptionally organized with strong attention to detail and follow-through.
• Able to manage multiple priorities independently under tight deadlines.
• Skilled in communication, both written and verbal, with a polished executive presence.
• Comfortable working closely with senior leadership and interacting with varied personalities.
• Proficient in Microsoft Outlook, Word, Excel, PowerPoint, CRMs, phone systems, and other productivity software.
• Able to synthesize information and prepare clear, accurate reports for management.
• Professional, reliable, and proactive—someone who anticipates needs rather than reacts to them.

Education: Associate’s degree preferred; equivalent experience considered.

Physical Requirements: Ability to work at a desk for extended periods. Ability to navigate the office building when hosting visitors or managing operations.

Ready to Take the Next Step?

If you thrive in a fast-moving, relationship-focused environment and want to support a mission-driven M&A advisory firm, we’d love to hear from you.

To apply, please submit your resume to mmcclellan@arkmalibu.com.

ArkMalibu is proud to be an Equal Opportunity (EOE) and Affirmative Action (AA) employer.