Executive Assistant

Position Summary

The Executive Assistant will provide high-level administrative support to MBX’s executive team members as assigned. This role is critical in ensuring seamless operations through expert calendar and schedule management, effective communication, and proactive problem‑solving. The Executive Assistant will primarily support the Chief Medical Officer, Chief Human Resources Officer, Senior Vice President of Regulatory & Quality, and an additional future executive team member.

Key responsibilities include managing complex calendars, coordinating internal and external meetings, and anticipating potential scheduling conflicts to implement contingency plans. This position requires the ability to manage multiple, conflicting, and evolving priorities in a fast‑paced environment while maintaining accuracy and professionalism. Additionally, planning and coordinating travel arrangements is an essential part of the role.

Strong communication skills and a commitment to MBX’s mission and values are essential for consistently delivering at the highest level.

• Manage complex calendars for multiple executives, including scheduling internal and external meetings.
• Anticipate potential conflicts and proactively implement contingency plans.
• Coordinate travel arrangements, accommodations, and itineraries.
• Organize and prepare for meetings, including agenda development, materials distribution, and logistics.
• Provide onsite or virtual support during meetings as needed.
• Coordinate logistics for company events, and leadership offsites.
• Ensure executives are equipped with necessary materials and resources for engagements.
• Liaise with internal teams and external partners to ensure smooth coordination of executive priorities.
• Assist with special projects and initiatives assigned by leadership.
• Prepare presentations, reports, and documents for executive review.
• Process expense reports and manage purchase orders as required.
• Support onboarding of new executive team members when applicable.
• Other responsibilities as assigned.

• Associate or Bachelor’s Degree
• 6+ years of previous experience as an Executive Assistant supporting C-level executives.
• Experience in event planning, facilities management and vendor contracts and relationships.
• Strong organizational and project planning skills that reflect ability to perform and prioritize multiple tasks seamlessly with meticulous attention to detail.
• Experience working with Concur Expense Reporting.
• Demonstrated high level of diligence and accountability for confidential information and interfacing with board and external business leaders.
• Highly proficiency with active interest and use of technology/applications.
• Excellent knowledge of MS Office (Outlook, Word, Excel, and Power Point).
• Excellent communication (written and verbal), interpersonal, and organizational skills.
• Ability to collaborate effectively with others to achieve common goals across the organization.
• Interest and ability to research solutions and propose alternatives to leaders for decision making.
• Demonstrated maturity, professionalism, and discretionary judgment while performing with high energy, integrity, honesty, trustworthiness, and keeping sensitive matters confidential.
• Ability to be flexible and dependable.

You will be expected to travel periodically based on the needs of the business to the extent requested by the Company including attendance at Together Weeks, Together Days and functional meetings as requested by the Company.

MBX Biosciences, Inc. (NASDAQ: MBX) is a clinical‑stage biopharmaceutical company focused on the discovery and development of novel precision peptide therapies for the treatment of endocrine and metabolic disorders. The Company was founded by global leaders with a transformative approach to peptide drug design and development. Leveraging this expertise, the Company designed its proprietary Precision Endocrine Peptide™ (PEP™) platform to overcome the key limitations of unmodified and modified peptide therapies and to improve clinical outcomes and simplify disease management for patients.

PEPs are selectively engineered to have optimized…