Executive Assistant

Flagship Pioneering is a bioplatform innovation company that invents and builds platform companies that change the world. We bring together scientific minds, entrepreneurial company builders, and capital to take courageous leaps that accelerate scientific progress in human health and sustainability.

This is an exciting opportunity for an Executive Assistant supporting the Chief Business Development Officer and the Business Development Leadership Team. The role is ideal for an experienced Executive Assistant who can operate with a high degree of professionalism, discretion, and independence while managing a broad range of administrative responsibilities.

The position engages primarily with external Flagship stakeholders and plays a key role in supporting Flagship’s partnering efforts across the pharmaceutical ecosystem. The successful candidate will be highly detail-oriented, possess exceptional organizational skills, and proactively build strong relationships across the organization. Critical thinking, creative problem-solving, effective communication, and follow-through are essential.

This position is based in the Cambridge office and requires onsite presence at least 4 days per week.

Flagship Pioneering offers an opportunity to make an impact as part of a Fortune “Change the World” company, work within an exciting startup culture, support innovative breakthroughs in health care and sustainability, and benefit from professional growth opportunities and comprehensive employee benefits.

• At least 7–10 years of experience providing administrative support to C-suite executives.
• Experience managing external relations or serving as a liaison between executive leadership and external stakeholders.
• High level of commitment, availability, and responsiveness outside core working hours, including weekends as needed.
• Comfort and readiness to work in a dynamic, demanding, and fast-paced environment.
• Exceptionally organized with keen attention to detail and the ability to shift focus and priorities under pressure and within deadlines.
• Outstanding verbal and written communication skills, with a strong ability to inform and engage through written communications.
• Excellent interpersonal and relationship-building skills.
• Professional, positive manner, with experience in a role requiring a high degree of discretion and confidentiality.
• Excellent problem-solving skills and resourcefulness; ability to follow through and close loops.
• Strong work ethic and an entrepreneurial spirit to accommodate a high level of responsibility and multiple priorities.
• Energetic, enthusiastic, can-do attitude, and interest in learning within a fast-paced, fast-growth organization.
• Proficient in MS Word and PowerPoint with advanced Outlook organizational skills.

• Coordinate calendars to enable the operational day-to-day activities of the ever-changing venture creation company.
• Coordinate domestic and international travel plans, including managing expense reporting and reimbursements.
• Proactively coordinate meetings, create agendas, and manage internal and external communications on behalf of the department.
• Act as the primary point of contact for potential external partners, ensuring a professional and welcoming representation of the organization.
• Collaborate with other Executive Assistants and administrative staff members to coordinate calendars, manage requests, and facilitate events.
• Provide back-up coverage to other Executive Assistants as necessary.
• Manage projects for a variety of initiatives that foster intradepartmental collaboration and advance the priorities of the department.
• Complete a broad range of in-office administrative tasks, including greeting guests, planning and coordinating events, and ordering meals.