About Alltrna

Alltrna, a Flagship-founded company, has mapped tRNA biology to systematically design tRNA medicines and encode a completely new, unifying approach to treating both rare and common human diseases driven by shared genetic mutations.  Our mission is to unlock tRNA biology and pioneer tRNA therapeutics to regulate the protein universe and resolve disease. Alltrna’s platform combines internal expertise and proprietary machine learning tools to unlock the entire tRNA biology space. We have an unprecedented opportunity to advance a single tRNA medicine to restore disrupted protein production, regardless of target, for thousands of diseases with the same underlying genetic mutation. Alltrna was founded in 2018 by Flagship Pioneering. For more info, visit www.alltrna.com.

Flagship Pioneering (FSP) conceives, creates, resources, and develops first-in-category bioplatform companies to transform human health and sustainability. Since its launch in 2000, the firm has, through its Flagship Labs unit, applied its unique hypothesis-driven innovation process to originate and foster more than 100 scientific ventures, resulting in more than $200 billion in aggregate value. To date, Flagship has deployed over $2.5 billion in capital toward the founding and growth of its pioneering companies alongside more than $19 billion of follow-on investments from other institutions. The current Flagship ecosystem comprises 42 transformative companies, including Denali Therapeutics (Nasdaq: DNLI), Foghorn Therapeutics (Nasdaq: FHTX), Indigo Ag,, Moderna (Nasdaq: MRNA), Omega Therapeutics (Nasdaq: OMGA), , Sana Biotechnology (Nasdaq: SANA), and Seres Therapeutics (Nasdaq: MCRB).

Position Summary:

We are seeking a dynamic individual The Executive Assistant and Office Administrator plays a pivotal role in ensuring the smooth operation in our start-up biotech environment while providing executive support to senior management and overseeing various human resources responsibilities. This multifaceted position requires exceptional organizational skills, attention to detail, discretion, and the ability to handle a diverse range of tasks efficiently.

This is an exciting and unique opportunity to help build and grow an organization. 

Key Responsibilities:

  • Provide comprehensive administrative support to senior executives, including calendar management, scheduling appointments, and coordinating meetings.
  • Prepare and distribute correspondence, reports, presentations, and other documents as needed.
  • Act as a liaison between executives and internal/external stakeholders, handling inquiries and requests with professionalism and discretion.
  • Support company communications initiatives, including regular updates to colleagues, social media account management, reports to leadership, newsletters, etc
  • Contribute to employee morale by organizing company events and engagement activities as well as occasional meal and snack ordering.
  • Act as point of contact for guests of the company, before, during and after visits
  • Collaborate with HR on a variety of programs such as new hire onboarding and employee recognition; ensure that new colleagues are integrated efficiently and seamlessly.
  • Plan and manage corporate events such as Scientific Advisory Board meetings, company offsites, Town Halls, celebrations, etc
  • Manage the supply of branded company materials, including merchandise, business cards, etc.
  • Identify opportunities to build company culture and improve operational efficiency across different company functions; lead specific efforts as required.
  • Help to manage and optimize office space and support any future office / laboratory relocations to minimize disruption and help colleagues maintain productivity.
  • Act as the first line of defense for our IT team by troubleshooting minor technical issues related to conference rooms, Zoom glitches, forgotten laptop chargers/adapters etc.
  • Provide occasional administrative support as needed to key members of the company by serving as backup Executive Assistant to the leadership team.
  • Proactively identify areas where we can improve the employee experience, work cross-functionally to make positive changes.
  • Work with team to assist with prospective candidates, including interview scheduling, travel support, and logistics.
  • Participate in special projects as they come up based on your interests, career goals, and capacity.


  • Bachelor’s Degree
  • At least 5+ year administrative/office management experience in a fast-paced, dynamic environment.
  • Experience in a start-up environment is strongly preferred; biotech experience will be favorably considered.
  • Ability to work with minimal supervision and maintain a high standard of confidentiality.
  • Demonstrated flexibility and professional maturity to readily understand priorities and anticipate needs.
  • Ability to manage conflicting priorities and deliver on the most critical assignments on time and within budget.
  • Must have a positive “can do” attitude, be a consummate team player, show excellent judgment as well as work well independently.
  • Experience with calendar management, planning events, and meeting scheduling.
  • Must be highly proficient in Microsoft office including Word, Outlook, Excel, PowerPoint along with experience setting up systems and databases.
  • Must have excellent written and verbal communication skills including attention to detail and ability to effectively multi-task with a willingness to perform a wide range of tasks including working with confidential information.
  • Must have a positive “can do” attitude, be responsive, friendly, and proactive.
  • Experience interacting with senior levels of leadership.
  • Ability to work in a fast-paced organization with competing priorities.

Flagship Pioneering and our ecosystem companies are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.

Recruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively, “FSP”) do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneering’s internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP, and FSP will not owe any referral or other fees with respect thereto.


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