Executive Assistant

About Sono Thera

Sono Thera is a venture-backed genetic medicine company advancing ultrasound-mediated, non-viral targeted therapies to unlock the full potential of genetic medicines. Our platform is designed to overcome key limitations in the field, enabling precise, redosable delivery across a broad range of diseases with high unmet need. Headquartered in South San Francisco, Sono Thera brings together a world‑class, interdisciplinary team focused on translating breakthrough science into transformative therapies.

Sono Thera is seeking an exceptional Executive Assistant to serve as a trusted right hand to the CEO and a critical partner in enabling executive effectiveness. This role is central to how the CEO operates day-to-day—owning time management with precision, orchestrating complex schedules and travel, and ensuring flawless execution across internal and external engagements, including board and investor interactions. The ideal candidate operates with exceptional judgment, discretion, and attention to detail.

The Executive Assistant will be highly organized, proactive, collaborative and able to anticipate needs before they arise. The Executive Assistant must be able to seamlessly manage competing priorities in a fast-paced, high-performance environment. This individual is calm under pressure, communicates with clarity and professionalism across all stakeholder teams, and takes pride in delivering work at an exceptionally high standard. The candidate is deeply reliable, solutions-oriented, and capable of representing the CEO and the company with polish and credibility.

• Serve as a trusted partner to the CEO, proactively managing priorities, time, and focus to maximize effectiveness
• Own and orchestrate complex calendars for the CEO and select members of the leadership team, ensuring alignment across internal priorities and external commitments
• Coordinate and execute domestic and international travel with precision, including detailed itineraries and seamless logistics
• Lead end-to-end planning and execution of meetings and events, including executive staff meetings, board meetings, investor interactions, and key internal forums
• Anticipate needs and ensure the CEO and leadership team are well-prepared for all meetings and commitments
• Track key action items and follow through to ensure timely execution across leadership priorities
• Facilitate coordination across teams to support effective communication and execution
• Provide high-impact administrative and operational support on special projects as needed

• 5+ years of experience providing high-level executive support in a fast-paced, high-performance environment
• Proven experience supporting C-level executives, ideally in a startup, biotech, or life sciences setting
• Exceptional organizational and prioritization skills, with the ability to manage multiple, competing demands with precision and efficiency
• Demonstrated ability to anticipate needs, exercise sound judgment, and operate with a high degree of autonomy
• Strong execution skills with the flexibility to adapt quickly in a dynamic, evolving environment
• Excellent written and verbal communication skills, with a high level of professionalism and attention to detail
• High degree of discretion, integrity, and ability to handle sensitive and confidential information
• Advanced proficiency in Microsoft Office (Outlook, Teams, PowerPoint, Excel, Word)
• Resourceful, solutions-oriented mindset with a focus on continuous improvement and operational excellence
• Collaborative team player with a positive, polished, and professional presence

• Bachelor's degree
• Experience supporting board meetings and investor communications
• Prior experience in a high-growth or venture-backed company
• Notary Public certification

We offer our employees a comprehensive benefits package.

At Sono Thera, we'll give you the tools to feel healthy, happy and secure.

• Access to a 24-hour onsite gym
• Comprehensive medical, dental, and vision
• Equity and ownership in a fast-growing company
• Commuting stipend based on your geographical location
• 401(k) Match:
  Sono Thera offers a company match
• All full-time employees are eligible for our flexible time off policy

The salary range for this position is $ to $ USD annually.. This salary range is an estimate, and the actual salary may vary based on various factors, including, without limitation, individual education, experience, tenure, skills, and abilities, as well as internal equity and alignment with market data, including potential adjustments for geographic location.

Sono Thera provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or anyother characteristic…