Executive Assistant & Office Manager

About Ossium Ossium’s mission is to improve the health, vitality, and longevity of human beings through bioengineering. We develop, manufacture, and bank cell therapy products that apply the power of stem cell science to revolutionize treatment for patients with blood, immune, and orthopedic diseases. At Ossium, we empower our employees, maintain the highest standards of operational excellence, and are a force for good. About the Job We’re hiring an Executive Assistant & Office Manager to provide critical administrative support for our founder CEO and office support for our growing San Francisco office! Your primary responsibility will be working closely with the CEO across a wide range of topics and duties. This is a great opportunity for someone looking to leverage a background in support to make a meaningful impact at a mission driven startup. This role will set the stage for a positive experience in the office for all. You will act as the first point of contact for visitors, oversee day-to-day office operations, and ensure the office is clean, well‑stocked, and welcoming. We are looking for someone who is consistently punctual and shows up with a positive attitude. Required Qualifications 5+ years of work experience, with at least 2 years in an administrative support role Strong interpersonal skills, able to strike a balance of professionalism and friendliness Excellent written and oral communication skills Enthusiasm for working in a demanding, fast‑paced environment and an ability to independently develop solutions to problems as they arise Strong organizational skills, including the ability to set priorities, handle multiple tasks, and organize time effectively Comfort with the large variety of unpredictable tasks common at start‑up This position is based in our San Francisco office; Hours are Monday - Thursday, 7:30 am - 4:00 pm, and 7:30 am to 2 pm on Fridays. Most of our SF staff is onsite Monday - Thursday and remote on Fridays, and the Office Manager will take advantage of the quiet to handle deliveries, answer phone calls, maintain office cleanliness, restock items, and run errands for the CEO Key Responsibilities Executive Assistance (~70%) Provide general leverage and support to the CEO, including managing a broad range of internal and external projects as required in a startup environment Ownership of the CEO’s business calendar: foresee scheduling conflicts, anticipate issues, communicate consistently (internally with the team and externally with customers, high‑level business partners, investors, OPO partners, and YPO members) and ensure efficiency Maintain a high level of confidentiality at all times both internally and externally Manage administrative functions including screening phone calls and proofreading documents, processing and managing expenses for the CEO Facilitate tactful communication with high‑level business partners Help in the planning and execution of logistics for meetings, trainings, special events and travel Book CEO business travel Assist with planning internal/external events (leadership retreats, company holiday parties, conferences) Order and/or pick up lunches for CEO; making tea and coffee for CEO Assist the CEO with tasks such as scheduling appointments (e.g. doctor’s appointments, haircuts, etc) and making reservations Office Management (~30%) Open up the office by 7:30 AM each day, disarm the alarm, empty the dishwasher Handle administrative tasks such as answering calls, filing, scanning mail, errands to postal office/shipping arrangements, sending out virtual birthday cards Take out the trash bins and be able to carry the bins up and down the stairs Monitor office supplies inventory and place orders, making sure we never run out of supplies Manage team lunches, make coffee, and restock the company kitchen, set up treats to be delivered for meetings and birthdays Plan and organize SF monthly happy hour Greet visitors, manage candidates’ onsite interviews, and answer the company’s main line to direct calls/take messages Support meeting and conference room needs: maintain office cleanliness and make sure conference rooms are clean, tidy, stocked, and that trash is removed every day Physical Requirements Must be able to lift, push, pull and/or carry up to 35 pounds Must be able to sit or stand for long periods of time. Regularly required to sit, stand, walk, climb, stoop, kneel, crouch; use hands to handle or feel; and reach with arms. Must be able to report to the office by 7:30 AM daily In your first three months, some projects you’ll work on include: Working closely with the CEO to manage his calendar including internal and external meetings, e.g. investors, business partners, and clinics Ensuring the office environment is welcoming and well‑stocked Arranging and setting up team monthly happy hours The annual salary range for this role is $90,000 - $130,000 annually. Ossium Health takes a market‑based approach to pay. The successful candidate’s starting salary will be determined based on, but not limited to, job‑related skills, experience, qualifications, and market conditions. This range may be modified in the future. We offer a full slate of employee benefits including: Stock options 401(k) matching Medical, dental and vision coverage Four weeks of PTO accrued (vacation & sick time) annually + 11 company holidays Employer paid life insurance and long term disability Gym membership/recreational sports reimbursements Equal Employment Opportunity Statement Ossium Health provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, protected veteran status, sexual orientation, gender identity, gender expression, or any other protected characteristic. Our Equal Employment Opportunity Policy Statement and the Know Your Rights: Workplace Discrimination is Illegal Poster reaffirm our commitment. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. If reasonable accommodation is needed, please contact our People Team at View email address on click.appcast.io or View phone number on click.appcast.io. Ossium Health complies with federal and state disability laws and makes reasonable accommodations for applicants and candidates with disabilities. Equal Opportunity Employer / Veterans / Disabled #J-18808-Ljbffr