Senior Manager, Internal Communications

Flagship Pioneering is a scientific innovation engine that invents and builds 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 in human health, sustainability, and beyond. 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 team of scientists, entrepreneurial leaders, and professional capital managers are each aligned around an institutionalized process that enables us to innovate and create breakthroughs 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 named four times to Fast Company’s annual list of the World’s Most Innovative Companies. Position Overview Flagship Pioneering is seeking a Senior Manager, Internal Communications to develop and execute internal communications strategies that keep Flagship and our ecosystem employees informed, engaged, and connected to Flagship's mission of inventing and building breakthrough companies that change the world. This individual contributor role will manage Flagship’s internal communications channels, including creating and distributing clear, compelling content through Flagship’s intranet, newsletters, email and messaging platforms, digital signage, executive communications, and more, while managing editorial calendars that keep messaging timely, coordinated, and audience-focused. Partnering closely with leadership, HR, and functional teams, this individual will bring creativity and high-impact ideas to ensure consistent communication around strategic initiatives, organizational updates, change management, and culture-building efforts. The ideal candidate combines exceptional writing and storytelling skills with sound judgment, creativity, and strong project management instincts, and is energized by the opportunity to strengthen employee experience through thoughtful, well-executed communications in a fast-paced, evolving environment. Responsibilities Develop and execute internal communications plans that support Flagship's business and employee-related needs, as well as communications strategies that reach employees across Flagship’s ecosystem of 40+ companies. Create clear, compelling content for internal channels, including company and ecosystem-wide emails, newsletters, digital signage, internal messaging platforms, materials for internal events, executive communications, among others. Manage Flagship’s intranet and develop editorial calendars and communication priorities across internal channels, ensuring timely, coordinated, and audience-focused communications. Partner with leadership, HR, and functional teams to ensure consistent, timely communication around strategic initiatives, organizational updates, and culture-building efforts. Design and manage communication campaigns that support employee engagement, inclusion, onboarding, and internal brand storytelling across multiple formats and platforms. Serve as a trusted communications partner to internal stakeholders, providing guidance and sound judgment on messaging, audience strategy, communication timing, and approaches to complex or sensitive organizational issues. Establish best practices and feedback loops to evaluate the effectiveness of internal communications, leveraging employee feedback, engagement metrics, and