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Serif Biomedicines Molecular Biology Co-Op


Job Location:

Cambridge, MA - USA

Hourly Salary: USD 25 - 35
Posted: 17 September 2026 (15 days ago)
Application Deadline: 15 December 2026
Vacancies: 1 Vacancy

Job Summary

This position is open exclusively to current Northeastern University Co-Op students.

Work Period:
January 2027 to June 2027. This is a full - time 40 hours per week position with 5 days in office.

About Serif Biomedicines

Are you ready to help build the next generation of molecular biology tools and platforms At Serif Biomedicines we push the boundaries of DNA design precise cloning and cell-based engineering to accelerate the discovery and development of transformative therapeutics and diagnostics.

About Flagship Pioneering

Serif Biomedicines was founded by Flagship Pioneeringsventure creation engine 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 companys Flagship has founded have addressed humanitys 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 FORTUNEs 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 Companys annual list of the Worlds Most Innovative Companies.Learn more about Flagship at.

FlagshipPioneering Co-Op Program

Welcome toFlagship Pioneering Co-Op Program for the cohort dreaming big and taking courageous leaps. Youll join fellow peers across our ecosystem of companies and learning firsthand how we build first-in-category companies. Youll have access toenrichment sessions adedicated professional development track and amentorthat help guide you toward your next step. By the end you will carry on ameaningful project outcome agenuine network anda front-row view of how Flagship pioneernew ventures that change the world.

The Role

As a member of our molecular biology team youll work at the forefront of hands-on research from constructing DNA plasmids to analyzing cell phenotypes and protein expression.

Were Looking For:

  • Highly motivated and enthusiastic co-op students eager to dive into fast-paced impactful bench science
  • Curious problem solvers who learn new techniques quickly and think creatively
  • Individuals with a strong foundation in molecular biology and cell culture; experience with synthetic biology genome engineering or assay development is a plus.

What Youll Do:

  • Design build and QC DNA constructs using restriction cloning Gibson/Golden Gate assembly and PCR.
  • Run agarose DNA gels to analyze PCR products and digests; perform gel extraction and DNA purification.
  • Set up restriction enzyme digests and ligations; optimize reaction conditions and troubleshoot cloning workflows
  • Perform core molecular and cell biology tasks including DNA/RNA extraction qPCR/RT-qPCR transfection/transduction and clonal line generation
  • Analyze and clearly communicate experimental results; iterate protocols in collaboration with experienced scientists

Embark on an exhilarating journey with Serif Biomedicines where your contributions at the bench will accelerate breakthrough molecular biology and shape whats possible in biotech. To apply please send your resume and a brief note on your relevant coursework and lab experience.

Why Join Us:

  • Contribute directly to impactful platform-scale molecular biology
  • Collaborate with a tight-knit multidisciplinary team that values mentorship and scientific rigor
  • Build a diverse toolkit spanning cloning gel-based analysis cell engineering assay development and data analysis

Qualifications:

  • Pursuing a MS in Molecular Biology Cell Biology Bioengineering Biochemistry or a related field
  • Hands-on experience with core techniques: miniprep/midiprep PCR agarose gel electrophoresis restriction enzyme digests ligation and DNA purification
  • Strong organizational skills attention to detail and clear written/verbal communication

What We Offer

  • Build alongside founders.Youll work inside the same hypothesis-driven process Flagship uses to conceive and launch first-in-category companies.
  • This can be the start of a longer story.Strong co-ops are considered for future opportunities across Flagship and its portfolio companies not just for this one role.
  • Work alongside people who left the safe path. Your colleagues are scientists engineers and operators who chose to build something new rather than join something already established.
  • Take on real ownership.Youre contributing to ventures that are still being defined. Your work can shape real decisions not just support them.
  • Be paid like the contributor you are.Compensation reflects the real work you take on.

Flagship Pioneering is committed toequal employment opportunityregardless of race color ancestry religion sex national origin sexual orientation age citizenship marital status disability gender identity or Veteran status.

The pay range for this role is $25 - $35 per hour. This role is a short-term engagement that is not eligible for health and welfare benefits. Retirement benefits may be available after completing a set number of hours. Compensation and benefits information is based on Serif Biomediciness 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 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

The pay range for this role is $25 - $35 per hour. This role is a short-term engagement that is not eligible for health and welfare benefits. Retirement benefits may be available after completing a set number of hours. Compensation and benefits information is based on Serif Biomediciness 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 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


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