Sr. Administrative Assistant and Office Manager

Osanni Bio; San Francisco (CA); Hybrid; USD 100,000 - 120,000; Full time

Benefits offered by this job

Bonus

Comprehensive benefits

Job summary

Osanni Bio, a development-stage biotech in San Francisco, seeks a Sr. Administrative Assistant and Office Manager to support the VP People & Culture, VP Commercial Strategy and Corporate Communications, and others while running the daily office operations.

The role covers calendar management, travel planning, vendor relations, shipping/receiving, events, onboarding logistics, and cross-functional support for People & Culture, IT and Facilities. On-site presence is required with a hybrid schedule.

Qualifications

• Bachelor's degree preferred or equivalent experience.
• 5+ years in executive admin, office ops or similar.
• Proven ability to manage calendars, travel and expenses for multiple leaders.
• Experience managing vendor relations and building services (landlord, maintenance).
• Shipping/receiving, inventory, catering and onboarding logistics experience welcome.

Responsibilities

• Provide senior-level administrative support to VP People & Culture, VP Commercial Strategy and Corporate Communications, and others.
• Plan SAB/MAB meetings, travel, meals and conference logistics.
• Coordinate leadership conferences and executive registrations across leaders.
• Support company-wide meetings including scheduling and catering.
• Manage domestic and international travel, itineraries and expense reporting.
• Serve as professional touchpoint between leadership, employees, and external stakeholders.

Skills

Executive support

Calendar management

Travel coordination

Vendor & building mgmt

Office operations

Communication

On-site/hybrid ready

Education

Bachelor's degree

Tools

Microsoft Office

Google Workspace

Slack

Zoom

Expense platforms

Job description

Osanni Bio is a development-stage therapeutics platform, headquartered in San Francisco, California. We are creative and agile innovators, relentlessly curious about finding new ways to target the biology behind diseases with the greatest unmet need and determined to do something about it.

At the center of Osanni is its innovation engine, which is optimized for discovering new scientific insights, designing novel drug concepts, and efficiently advancing programs to a meaningful proof-of-concept. Once a program is sufficiently de-risked, it graduates into its ecosystem of affiliate companies, which are equipped with the dedicated focus, specialized talent and support necessary to scale. Osanni's architecture marries the scientific depth and operational power of a centralized platform with the speed, agility and accountability of independent companies. The result: an opportunity to create and deliver more transformative medicines.

We hold patients and the physicians who care for them as our North Star. It guides our purpose, sharpens our decision-making, and defines our impact. Osanni is currently advancing programs in ophthalmology, cardiology and beyond. We are building a highly skilled team, passionate about having an impact on human health. Be part of creating an organization where people enjoy their work and their colleagues, are valued for their individuality, and can't imagine working anywhere else.

About the Role:

The Sr. Administrative Assistant and Office Manager is responsible for providing senior-level administrative support to Osanni's VP People & Culture, VP Commercial Strategy and Corporate Communications and others, while owning the daily operations of our office. Reporting to the VP People & Culture, this role spans administrative, vendor and building-management relationships, shipping and receiving (in partnership with lab/facility manager), stocking of items in common areas, catering, office access, and cross-functional support for People & Culture, IT, and Facilities. In partnership with the Culture Team, this role also helps organize the events and moments that bring our team together and reinforce Osanni's values as we grow as a development-stage biotech.

The ideal candidate is a highly organized, service-oriented operator who thrives in a fast-paced, evolving biotech environment and moves fluidly between senior-level administrative support and hands-on office execution. As the face of the office to visitors, candidates, and new hires, they set the tone for every first impression of Osanni. They anticipate needs before they surface, handle sensitive information with discretion and sound judgment, and take pride in the details that make a workplace feel exceptional.

What You Will Do:

Executive and Administrative Support

• Provide senior-level administrative support to the VP People & Culture, VP Commercial Strategy and Corporate Communications and others as needed, including calendar management, meeting scheduling, and prioritization across competing demands
• In partnership with the Associate Dir, Business Operations, help plan the SAB/MAB meetings, including scheduling, location, meals, travel, etc.
• In partnership with the Associate Dir, Business Operations, serve as the centralized coordinator for leadership conference planning, including travel (flights and hotel blocks), executive meals, dinners and lunches, and meetings/events with external partners; each executive's Admin handles their own exec's conference registration
• Support all company-wide meetings (scheduling, catering, etc.)
• Coordinate domestic and international travel arrangements, itineraries, and logistics for supported executives, and prepare and submit expense reports in a timely manner
• Serve as a professional point of contact between the leadership team, employees across the company, and external stakeholders
• Handle confidential information, including corporate, financial, legal, and personnel matters, with discretion and sound judgment

Office Management and Workplace Experience

• Serve as the primary point of contact for all employees on office-related needs, ensuring a welcoming, well-run, and productive workplace experience
• Manage all external vendor and building-management relationships, including landlord, property management and office maintenance contractors
• Own office and kitchen stocking, and catering for daily needs, meetings, events, and executive visits, including ordering, dietary accommodations, setup, and cleanup; Responsible for all on-site food at corporate events, lunches, etc.
• Manage shipping and receiving in partnership with facilities
• Partner with People & Culture on new-hire onboarding logistics and offboarding, and coordinate with IT on equipment procurement, and badge and access systems
• In partnership with the Culture Team, plan and execute company events, off-sites, team celebrations, and cultural moments that reinforce Osanni's values
• Manage multiple priorities in a fast-paced, evolving environment, ensuring deliverables are completed accurately and on time, while performing other related duties as required

What You Bring:

• Bachelor's degree preferred, or equivalent combination of education and directly relevant experience
• 5+ years of experience in executive administration, office management, workplace experience, or a comparable operational role, including experience supporting senior executives
• Demonstrated ability to manage executive calendars, travel arrangements, and expense reporting across multiple leaders with competing priorities
• Demonstrated ownership of external vendor and building-management relationships, including contract negotiation, service-level monitoring, and issue resolution preferred
• Hands-on experience managing shipping and receiving, inventory and stocking, kitchen and catering programs, office access and visitor check-in, and office budgets, including purchase orders, invoices, and partnering with Finance on office-related expenses, preferred
• Track record planning and executing company events, off-sites, and team celebrations, with attention to detail
• Proficiency with Microsoft Office and common workplace tools such as Google Workspace, Slack, Zoom, and expense management platforms; comfort quickly learning new systems
• Excellent written and verbal communication skills, with the ability to represent Osanni warmly and professionally to employees, candidates, executives, vendors, and external visitors
• Exceptional organizational skills, follow-through, and attention to detail, paired with a service-oriented, adaptable, hands-on approach; willing to roll up sleeves and manage multiple concurrent priorities without dropping the ball
• Sound judgment, discretion, and confidentiality in handling sensitive information related to employees, executives, and business operations
• Prior experience in a biotech, pharmaceutical, or life-sciences company, or in a venture-backed startup or similarly fast-paced environment, a plus
• Ability to work onsite in the SF Bay Area on a hybrid schedule as required by the needs of the office and the team; generally anticipate 3-4 days on-site each week to manage all job duties including assisting with shipping and receiving

The expected base pay range for this position is $100,000 - $120,000 plus bonus and comprehensive benefits. The base pay range reflects the target range for this position, but individual pay will be determined by additional factors such as job-related skills, experience and relevant education or training.

We are committed to creating a diverse environment and are proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

We will provide an intellectually stimulating, collegial and fast-paced environment. If you are ready to be a part of building the future of transformative medicines, then we are excited to hear from you!