Serif Biomedicines: Immunology Co-Op

Flagship Pioneering Co-Op Program; Cambridge (MA); On-site; USD 34,000 - 48,000; Full time

Benefits offered by this job

Build alongside founders.

Longer-term opportunities across Flag‑

Real ownership of meaningful projects

Competitive hourly pay

Job summary

Flagship Pioneering Co-Op Program at Serif Biomedicines invites diligent Northeastern Co‑op students to join a therapeutic discovery team. You’ll work on primary immune cell isolation, culture of mammalian cells, and in vitro assays under expert guidance, gaining exposure to flow cytometry and ex vivo mouse model work.

Strong candidates are pursuing an MS in Molecular Biology, Cell Biology, Immunology, or related fields, with experience in cell culture, data analysis, and proficient Microsoft

Qualifications

• Pursuing an MS in Molecular Biology, Cell Biology, Bioengineering, Immunology, or a related field.
• Experience with cell culture and aseptic technique.
• Detail oriented, self‑motivated, and able to work on highly technical projects.

Responsibilities

• Isolate primary immune cells from leukopak and manage inventory.
• Culture mammalian cells and perform gene delivery via transfection.
• Execute in vitro assays including multi‑color flow cytometry and cytotoxicity readouts.
• Conduct ex vivo analysis of immune cells through tissue processing and analyses.

Skills

Cell biology

Immunology

Flow cytometry

Data analysis

Education

MS in Molecular Biology/Cell Biology/Bioengineering/Immunology

Tools

Excel

PowerPoint

Job description

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.

Join Our Innovative Team at Serif Biomedicines

Are you ready to be part of a pioneering biotech company on the frontline of developing a novel approach to gene therapy that can address currently untreatable diseases?

About Flagship Pioneering

Serif Biomedicines was founded by Flagship Pioneering’s venture 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 company’s 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 Co-Op Program

Welcome to Flagship Pioneering Co-Op Program for the cohort dreaming big and taking courageous leaps. You’ll join fellow peers across our ecosystem of companies and learning firsthand how we build first-in-category companies. You’ll have access to enrichment sessions , a dedicated professional development track , and a mentor that help guide you toward your next step. By the end, you will carry on a meaningful project outcome , a genuine network , and a front-row view of how Flagship pioneer new ventures that change the world.

The Role

As a member of our therapeutic discovery team, you’ll explore the forefront of scientific discovery—from developing and executing in vitro assays on primary human T cells to analysing therapeutic candidates in humanized mouse models.

We’re Looking For:

• Highly motivated and enthusiastic co‑op students eager to dive into groundbreaking research.
• Ability to learn new techniques and to think creatively about problem solving
• Individuals with a background in cell biology, ideally T cell biology, with a desire to master novel techniques. Experience with immunology and nucleic acid modality is a plus.

What You’ll Do:

• Contribute to primary immune cell isolation from leukopak and inventory management.
• Culture mammalian cells and perform gene delivery via transfection.
• Execute in vitro assays to evaluate immune cell function, including multi-color flow cytometry, cytotoxicity assays and other functional readouts under the guidance of manager and other scientists on the team.
• Conduct ex vivo analysis of immune cells through tissue processing and downstream assays and analyses

Why Join Us?

• Be part of an inspiring mission to develop therapeutic solutions for autoimmune and cancer patients.
• Collaborate with a dynamic team of experimental scientists.
• Develop a diverse skill set and gain unparalleled experience in cutting‑edge research.

Qualifications:

• Pursuing a MS in Molecular Biology, Cell Biology, Bioengineering, Immunology, or a related field
• Experience with cell culture and aseptic technique
• Detail oriented, self‑motivated, and comfortable working with highly technical projects and personnel
• Strong communication and interpersonal skills
• Competence with Excel and PowerPoint
• Experience working with immune cells and a general understanding of immunology is highly preferred
• Experience with flow cytometry and/or ex vivo mouse model sample processing is preferred

What We Offer

• Build alongside founders. You’ll 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. You’re 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 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.

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 Biomedicines’s good faith estimate as of the date of publication and may be modified in the future.

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