Senior Exec Assistant to CEO & Leadership Team (Biotech)

Osanni Bio; San Francisco (CA); On-site; USD 135,000 - 162,000; Full time

Benefits offered by this job

Bonus eligibility

Comprehensive benefits

Diversity and inclusion

Job summary

Osanni Bio is seeking a senior Executive Assistant to be a trusted partner to the CEO, CBO, CFO, and VP Legal. You will manage complex calendars, travel, expenses, and board communications, while maintaining discretion and strong judgment in a fast-paced biotech environment.

This on-site role in the San Francisco Bay Area requires three days per week in the office, supporting leadership across strategic priorities and external stakeholders.

Qualifications

• Bachelor's degree preferred.
• 8+ years of experience as a senior-level Executive Assistant supporting CEO and other C-suite executives.
• Experience coordinating Board of Directors meetings and interacting with board members, investors, and outside counsel.
• High emotional intelligence and strong relationship-building instincts.
• Advanced proficiency with Microsoft Office and collaboration tools such as Google Workspace, Zoom, Slack, and DocuSign.
• Exceptional organizational skills and attention to detail, with the ability to manage complex calendars and competing priorities.
• Excellent written and verbal communication skills, with a professional and approachable presence at all levels.
• Proven discretion and sound judgment in handling highly confidential information.

Responsibilities

• Own multi-executive calendar management and prioritize requests across executives.
• Coordinate domestic and international travel arrangements and expense reports.
• Manage Board communications and materials, including scheduling and agenda distribution.
• Schedule investor and business development meetings across time zones.
• Prepare, proofread, and format correspondence, presentations, and documents.
• Assist with events, offsites, and team gatherings as needed.

Skills

Calendar management

Executive support

Board coordination

Communication

Discretion

Biotech industry experience

MS Office

Google Workspace/Zoom/Slack/DocuSign

Education

Bachelor's degree

Tools

Microsoft Office

Google Workspace

Zoom

Slack

DocuSign

Job description

Osanni Bio is seeking a senior Executive Assistant to be a trusted partner to the CEO, CBO, CFO, and VP Legal. You will manage complex calendars, travel, expenses, and board communications, while maintaining discretion and strong judgment in a fast-paced biotech environment.

This on-site role in the San Francisco Bay Area requires three days per week in the office, supporting leadership across strategic priorities and external stakeholders.