hirly

Flagshippioneeringinc

Research Associate, In Vivo

Cambridge, MA USA

See how you match this job — and similar ones. Free.

Upload your resume and hirly scores it against this role at Flagshippioneeringinc first, then against similar open jobs, and shows where you fit and why.

PDF or DOCX, up to 12MB. No sign-up to see your matches.

Get past the screening software and onto a recruiter's desk

hirly rewrites your resume for this job — matching the keywords and skills in the posting, moving your most relevant experience to the top, and writing a cover letter to fit. About 30 seconds.

  • Keywords matched to this posting
  • Fit score before you apply
  • Cover letter included

Matched against 2.3M live jobs from 200,000+ employers in 200+ countries.

Tailor my resume for this job →

hirly's read of this role

Seniority
Mid level
Country
US
Work mode
On-site / unstated
First seen by hirly
30 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

Company Summary:

FL106 Inc. is a privately held, early-stage biotechnology company focused on developing novel drug delivery modalities. FL106 Inc. is backed by Flagship Pioneering, which provides the strategic vision and resources to advance FL106 from platform validation to clinical impact.

Position Summary:

We are seeking a highly motivated Research Associate with broad expertise conducting in vivo studies, histology preparation and analysis, and molecular biology. This individual will play an important role in generating high-quality data on the biodistribution, target engagement, and biological response of our molecules in animal models.

The candidate must be independent, goal-oriented, have excellent communication skills, and be willing to work in a highly dynamic and fast-paced entrepreneurial environment. This is a unique opportunity to drive the growth of an early-stage biotechnology company where you can contribute to the next frontier of genetic medicines. We are looking for collaborative, enthusiastic problem-solvers to join our team, driven by a shared goal of making a practical impact.

Key Responsibilities:

In Vivo Pharmacology

Conduct in vivo studies in rodent models including experience with peripheral administration (IV, IP, SC) and stereotactic surgeries for direct to CNS administration.

Conduct terminal procedures, including animal takedowns, blood collection, and necropsies.

Perform tissue harvesting and dissection as appropriate for downstream bioanalytical and histological applications.

Histology & Imaging

Prepare, embed, and section a variety of mammalian tissues using microtome, vibratome, or cryostat techniques (FFPE or fresh-frozen samples).

Perform immunohistochemistry (IHC) and immunofluorescence (IF) on tissue sections

Acquire high-quality images using epifluorescence and/or confocal microscopy

Perform in vivo and ex vivo fluorescence and bioluminescence imaging using IVIS or equivalent small-animal imaging systems, including organ collection, image acquisition, and quantitative analysis of signal intensity and tissue distribution.

Conduct quantitative image analysis (cell counts, regional MFI, colocalization analysis, morphometric quantification) using software such as ImageJ, QuPath, Halo, or equivalent platforms.

Molecular Biology

Perform measurement of gene and protein expression analyses using qRT-PCR, Western blotting, and ELISA methodologies and interpret data

Report results clearly to the scientific team

Qualifications and Skills:

Bachelor’s degree or higher in Cell Biology or a related field, with 1+ years of laboratory experience, preferably in the biopharmaceutical industry.

Strong hands-on experience with rodent in vivo studies

Strong hands-on experience in histology, including tissue embedding, sectioning, staining, IHC/IF, and imaging.

Additional Qualifications (preferred but not required):

Authorship on a peer reviewed publication

Experience with multiplex IHC/IF and advanced image analysis platforms.

About Flagship

Flagship Pioneering is a bioplatform innovation 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 generation of over 500 patents, initiation of over 50 clinical trials for novel therapeutic agents and an aggregate value of more than $90 billion. 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 www.flagshippioneering.com .

Flagship Pioneering is 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.

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.

Privacy Notice for Applicants: When you apply for a role at Flagship Pioneering or one of its portfolio companies, we collect and use personal information you provide (such as your name, contact details, work history, and application materials) to evaluate your application, communicate with you, and comply with legal obligations. Your application data is processed through Greenhouse, our applicant tracking system, and may also be reviewed using AI-assisted screening tools. We do not sell your personal information. California residents have rights under the CCPA/CPRA including to know, delete, and opt out of the sharing of their personal information. If you are located in the EU or UK, we process your data under GDPR and you have rights to access, rectify, and erase your data. To exercise your rights or for questions, contact [email protected].

The salary range for this role is $65,000 - $93,500. Compensation for the role will depend on a number of factors, including a candidate’s qualifications, skills, competencies, and experience. FL106 currently offers healthcare coverage, annual incentive program, retirement benefits and a broad range of other benefits. Compensation and benefits information is based on FL106's good faith estimate as of the date of publication and may be modified in the future.

Privacy Notice for Applicants: When you apply for a role at Flagship Pioneering or one of its portfolio companies, we collect and use personal information you provide (such as your name, contact details, work history, and application materials) to evaluate your application, communicate with you, and comply with legal obligations. Your application data is processed through Greenhouse, our applicant tracking system, and may also be reviewed using AI-assisted screening tools. We do not sell your personal information. California residents have rights under the CCPA/CPRA including to know, delete, and opt out of the sharing of their personal information. If you are located in the EU or UK, we process your data under GDPR and you have rights to access, rectify, and erase your data. To exercise your rights or for questions, contact [email protected].

Original posting on Flagshippioneeringinc's site ↗

Want this one?

Upload your resume and hirly rewrites it for this job and writes the cover letter — in about thirty seconds, before you sign up.

Tailor my resume for this job