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Executive Assistant

Flagshippioneeringinc · Cambridge, MA USA · Posted Jul 8, 2026

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Flagship Pioneering is a bioplatform innovation company that invents and builds platform companies that change the world. We bring together the greatest scientific minds with entrepreneurial company builders and assemble the capital to allow them to take courageous leaps. Those big leaps in human health and sustainability exponentially accelerate scientific progress in areas ranging from cancer detection and treatment to nature-positive agriculture.

What sets Flagship apart is our ability to advance biotechnology by uniting life science innovation, company creation, and capital investment under one roof in a way that is largely without precedent. Our scientific founders, entrepreneurial leaders, and professional capital managers are each aligned around an institutionalized process that enables us to innovate and transform for the benefit of people and planet.

Many of the companies Flagship has founded have addressed humanity’s most urgent challenges: vaccinating billions of people against COVID-19, curing intractable diseases, improving human health, preempting illness, and feeding the world by improving the resiliency and sustainability of agriculture.

Flagship has been recognized twice on FORTUNE’s “Change the World” list, an annual ranking of companies that have made a positive social and environmental impact through activities that are part of their core business strategies, and has been twice named to Fast Company’s annual list of the World’s Most Innovative Companies.

Job Summary

This is a new position and an outstanding career opportunity for an experienced Executive Assistant to provide high-level support to one of Flagship Pioneering's Executives. The ideal candidate will leverage a broad range of skills with a high degree of professionalism and discretion in handling a wide variety of comprehensive responsibilities. Must be detail-oriented and have strong organizational skills to effectively manage administrative tasks. Requires the ability to proactively build organizational knowledge and relationships and think critically and creatively to support problem-solving and ensure strong communication flow and follow-through. This is a hybrid position , with expectations to be in person at HQ (Cambridge, MA) on a weekly basis.

Why Flagship?

At Flagship Pioneering, YOU get: inspiring leadership, great company culture, competitive compensation packages, best in class benefits, generous PTO, beautiful office space stocked with unlimited snacks and impactful work with endless career growth.

As an Executive Assistant you will:

Coordinate executive calendars for work related to the operational day-to-day activities of an ever changing, venture creation firm.

Responsible for proactively coordinating meetings, creating agendas, and managing internal and external communications on behalf of the department.

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 advancing the priorities of the department.

Coordinate worldwide travel plans including expense reporting and reimbursement.

Who You Are:

Bachelor's degree required.

5 plus years of experience in providing support to high-level executives preferably at the “C” suite level.

Proven ability to work in a dynamic, demanding, and fast-paced environment.

Exceptionally organized with keen attention to detail.

Skilled at multi-tasking with ability to shift focus and priorities while under pressure and within deadlines.

Outstanding verbal and written communication skills; strong ability to inform and engage through written communications.

Highly interpersonal with effective relationship-building skills.

Professional, positive manner, with experience in a role requiring a high degree of confidentiality and discretion.

Excellent problem-solving skills and resourcefulness; ability to follow-through and close loops.

Strong work ethic and an entrepreneurial spirit to accommodate high level of responsibility and multiple priorities.

Energetic, enthusiastic, and interested in learning within a multifaceted, fast-paced, fast-growth organization.

Proficient in MS Office 2010 (Word, PowerPoint, some Excel) with Advanced Outlook organizational and calendaring skills

Ability to work in our Cambridge, MA office on a consistent basis, likely Monday through Thursdays to support the Executives’ needs.

Joining Flagship Pioneering will allow you to:

Make an impact as part of a Fortune “Change the World” company

Be energized by an exciting startup culture

Surround yourself with inspirational colleagues and leaders

Support innovative breakthroughs in health care and sustainability

Expand your horizons with opportunities for professional growth

Enjoy unparalleled employee benefits and rewards programs…

Apply on company site