Company Summary

What if…you could join an organization that creates, resources, and builds life sciences companies that invent breakthrough technologies in order to transform health care and sustainability?

Apriori Bio is an early-stage biotechnology company with an ambitious and exciting mission: to lay the foundation for Global Pathogen Shield™ protective interventions that that can neutralize a wide range of the most dangerous and rapidly evolving infectious pathogen threats.  The company is developing a revolutionary approach to this challenge and recruiting a team of top-tier scientists to build what it believes will be a powerful, first-in-category R&D platform.

Flagship Pioneering is a biotechnology company that invents and builds platform companies, each with the potential for multiple products that transform human health or sustainability. Since its launch in 2000, Flagship has originated and fostered more than 100 scientific ventures, resulting in more than $90 billion in aggregate value. 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. Learn more about Flagship at

Position Summary

We are seeking a highly motivated and detail-oriented Senior Research Assistant to join our team in the field of immunology for vaccine development. As a Senior Research Assistant, you will play a crucial role in supporting our research efforts to advance the development of novel vaccines and immune enhancing formulations.

The Role


  • Conduct laboratory experiments and assays to evaluate vaccine candidates
  • Perform immunological techniques such as ELISA, electrochemiluminescent (ECL) assays, flow cytometry, and cell-based assays to analyze immune responses
  • Assist in the development, optimization, and conduct of immunoassays for antigen characterization and immune response evaluation
  • Collaborate with the research team to design and execute experiments, collect and analyze data, and contribute to scientific presentations
  • Maintain accurate and detailed laboratory records, including experimental protocols, data analysis, and research findings
  • Manage and maintain inventory of laboratory supplies, reagents, and in vivo samples, ensuring an adequate supply and archive for ongoing research activities
  • Ensure compliance with laboratory safety protocols and maintain a clean and organized work environment


  • Bachelor's or Master's degree in Immunology, Virology, Biology, or a related field with 3+/5+ years of experience (industry preferred)
  • Strong theoretical and practical knowledge of immunology and vaccine development (especially influenza and/or SARS-CoV-2)
  • Experience with mammalian cell culture techniques, including isolating, culturing and assaying primary human and murine immune cells
  • Familiarity with Benchling, GraphPad Prism and FlowJo is a plus
  • Experience in performing immunological techniques such as ELISA, ECL, flow cytometry, and cell-based assays such as ELISPOT/ASC
  • Excellent organizational skills and attention to detail, with effective oral and written communication skills
  • Able to work independently and collaboratively in a team-oriented environment with limited supervision
  • Prior experience in vaccine or adjuvant research is preferred but not required

At Flagship, we recognize there is no perfect candidate. If you have some of the experience listed above but not all, please apply anyway. Experience comes in many forms, skills are transferable, and passion goes a long way. We are dedicated to building diverse and inclusive teams and look forward to learning more about your unique background.

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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