Flagship Labs Proteomics Co-Op

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

What if… you could help build a platform that reveals the biological state of any cell in the human body from a simple blood draw?

Flagship Labs 103 (FL103), a Flagship Pioneering-backed biotechnology company, is developing a novel diagnostic platform to decode cellular dynamics through extracellularvesicles(EVs). EVs carry rich molecular information from their cells of origin and circulate throughout the body, offering an unprecedented opportunity to non‑invasively monitor tissue biology and connect individuals to the most effective interventions to prevent and manage disease.

Flagship Labs 103 is a product of 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 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

Welcome to the 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 learn 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
** pioneers new ventures that change the world.

FL103 is seeking a Co-Op to join our small, hands-on Proteomics team, working directly alongside a scientist and the team lead. You’ll help develop and run mass spectrometry–based proteomics assays that support our diagnosticplatform, andhelp analyze the resulting data.

Depending on project needs and the direction the team takes, work may involve materials derived from cell culture and/or materials derived from human plasma; you’ll get exposure to both as potential sample sources as our assays and platform evolve.

• Help develop, execute, and troubleshoot proteomics assays under the guidance of the team’s scientist and team lead.
• Prepare and process samples derived from cell culture and/or human plasma, following established and evolving protocols.
• Support mass spectrometry–based proteomics sample preparation workflows, including protein extraction, digestion, and clean‑up.
• Assist with LC‑MS/MS sample handling and instrument runs alongside the team.
• Support analysis of MS‑based proteomics data — for example, organizing and processing datasets and helping summarize results.
• Maintain clear, complete records in an electronic lab notebook (ELN) — conditions, calculations, raw data, and observations.
• Help document and refine protocols so they’re easy for others on the team to follow.
• Present…