Serif Biomedicines: Molecular Biology Co-Op

Flagship Pioneering Co-Op Program • Cambridge, MA

3d • $25 - $35 • Onsite

About The Position

Serif Biomedicines is seeking a current Northeastern University co-op student to join its molecular biology team for a full-time, 40-hour-per-week work period from January 2027 to June 2027. The role is five days a week in the office and involves hands-on research, from constructing DNA plasmids to analyzing cell phenotypes and protein expression.

The co-op will design, build, and quality-check DNA constructs; conduct molecular and cell biology experiments; analyze results; and refine protocols in collaboration with experienced scientists. The position offers experience across cloning, gel-based analysis, cell engineering, assay development, and data analysis, with mentorship and the opportunity to contribute to impactful platform-scale molecular biology work.

Requirements

• Must be a current Northeastern University co-op student.
• Pursuing a master's degree in Molecular Biology, Cell Biology, Bioengineering, Biochemistry, or a related field.
• Hands-on experience with miniprep/midiprep, PCR, agarose gel electrophoresis, restriction enzyme digests, ligation, and DNA purification.
• Strong foundation in molecular biology and cell culture.
• Strong organizational skills, attention to detail, and clear written and verbal communication.
• Motivation and enthusiasm for hands-on bench science, curiosity, ability to learn new techniques quickly, and creative problem-solving.

Nice To Haves

• Experience with synthetic biology, genome engineering, or assay development.

Responsibilities

• Design, build, and quality-check DNA constructs using restriction cloning, Gibson or 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 DNA and RNA extraction, qPCR/RT-qPCR, transfection/transduction, and clonal line generation.
• Analyze and clearly communicate experimental results.
• Iterate protocols in collaboration with experienced scientists.

Benefits

• Mentorship and a dedicated professional development track through the Flagship Pioneering Co-Op Program.
• Strong co-ops may be considered for future opportunities across Flagship and its portfolio companies.
• Compensation of $25–$35 per hour.
• Retirement benefits may be available after completing a set number of hours.

What This Job Offers

• Job Type: Full-time
• Career Level: Intern