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Flagship Pioneering

Venture capital building bioplatform companies

Protein Science Co-op

Winter 2027
$25 - $35/hr
Internship
Bachelor's, Master's
Cambridge, MA, USA
In PersonFive days in the office.
Biology & BiotechTranslational Research & Bench Biology

About the job

Requirements
  • Pursuing a Bachelor of Science or Master of Science in Biochemistry, Bioengineering, Chemical Engineering, Molecular Biology, or a related field.
  • Have hands-on laboratory experience through coursework or research, such as SDS-PAGE, solution preparation, and accurate pipetting.
  • Have experience with mammalian cell culture and aseptic technique.
  • Demonstrate strong organizational and record-keeping skills.
Responsibilities
  • Express recombinant vaccine antigens and antibodies in mammalian expression systems, including small-scale transient transfection and scale-up.
  • Purify proteins using affinity and size-exclusion chromatography on ÄKTA systems.
  • Characterize protein quality and stability using SDS-PAGE, analytical size-exclusion chromatography, and thermal stability methods such as differential scanning fluorimetry.
  • Contribute to the development and execution of binding and functional assays, including enzyme-linked immunosorbent assay and bio-layer interferometry, to assess antigenicity against panels of monoclonal antibodies.
  • Document experiments in the electronic lab notebook Benchling and present results at team meetings.
Desired Qualifications
  • Have exposure to protein purification or chromatography, or plate-based assays such as enzyme-linked immunosorbent assay.

About the company

Flagship Pioneering funds and incubates life-sciences ventures by creating bioplatform companies, forming early-stage NewCos and guiding them to GrowthCos. It identifies broad scientific platforms that can generate multiple products, builds companies around these platforms, and moves them from inception to growth to assemble a multi-product portfolio. Unlike traditional investors, it creates new ventures from scratch and shepherds them through staged development, building a pipeline of category-leading biotech and life-science companies. Its goal is to develop a diverse portfolio of platform-based companies that advance human health and sustainability by delivering multiple products.

Company Size

501-1,000

Company Stage

N/A

Total Funding

$11.5B

Headquarters

Cambridge, Maryland

Founded

2000

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Simplify's Take

What believers are saying

  • Sept. 23, 2026 ONTARGET gives up to $47 million over five years.
  • Apr. 1, 2026 AWS partnership gives companies cloud credits, support, and AI infrastructure.
  • Apr. 21, 2026 Serif launched with $50 million for modified DNA medicines.

What critics are saying

  • Sept. 28, 2026 Inari settled Corteva litigation, surrendered IP, and faces licensing costs.
  • Mar. 6, 2026 Alltrna cut 19 workers, and CEO Michelle Werner exited.
  • If Lila or Serif disappoint, Flagship's platform premium collapses and LP fundraising stalls.

What makes Flagship Pioneering unique

  • Sept. 23, 2026 DoW contract proves Flagship sells a platform, not single startups.
  • Flagship's 40-plus-company ecosystem bundles AI, translational science, and drug development under one roof.
  • Aug. 3, 2026 leadership hires add global partnerships and fundraising firepower.

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Benefits

  • Professional Development Budget
  • Flexible Work Hours

Company News

Yahoo Finance
Oct 29th, 2026
Flagship merges three biotech startups into AI drug discovery firm Etcelera, backed by $374M

Flagship Pioneering has merged three of its biotech startups, Etiome, Cellarity and Empress Therapeutics, into a new company called Etcelera Therapeutics. It will combine artificial intelligence (AI) with drug discovery tools to predict which experimental medicines might succeed in the clinic. Adrian "Ad" Rawcliffe, former chief executive officer of Adaptimmune and a GSK veteran, leads the company. He said the three firms' datasets and technology could help gauge which drugs might fail in human testing. Etcelera will target hematological conditions, immune diseases, and metabolic-fibrotic disorders, starting with programs for myelofibrosis and essential thrombocythemia. No new funding was announced. The three startups had raised $374 million in venture capital before the merger. Etcelera keeps a 2022 partnership between Novo and Cellarity, and Rawcliffe said a second alliance with an unnamed large pharmaceutical firm is in the works.

PR Newswire
Oct 29th, 2026
Flagship Pioneering merges Cellarity, Etiome and Empress into AI drug discovery firm Etcelera

Flagship Pioneering has formed Etcelera, a drug discovery company built by merging the platforms of Cellarity, Etiome, and Empress Therapeutics. Announced on October 29, 2026, it aims to determine what drives disease and predict how a medicine will act in patients before clinical trials. Etcelera combines human transcriptomic data, chemoproteomics, and perturbation data with Flagship's in-house AI. Its platform draws on more than 20 years of combined data, a foundation model trained on 150 million cells, and more than 30 AI-powered prediction models. Ad Rawcliffe, CEO-partner at Flagship, will lead the company. It launches with programs in hematology, metabolism, and immunology, and continued backing from Flagship and others. Chairman Alec Reynolds said about 50% of drug candidates that reach Phase 2 fail because the industry lacks causal intelligence.

Business Wire
Oct 7th, 2026
Indigo Ag Announces an Additional $360M in Financing, Appoints Stéphane Bancel, Moderna CEO, to Board of Directors

Indigo Agriculture, a company dedicated to harnessing nature to help farmers sustainably feed the planet, announces the closing of $360M in additional financ...

PR Newswire
Sep 23rd, 2026
Flagship Pioneering awarded first-of-its-kind contract by Department of War to advance next-generation medical countermeasure technologies against evolving biological threats.

Flagship Pioneering awarded first-of-its-kind contract by Department of War to advance next-generation medical countermeasure technologies against evolving biological threats. Sep 23, 2026, 06:30 ET Agreement marks strategic shift in how Department of War partners with the private sector, with Flagship providing access to broad range of innovative platforms against evolving threats Award of up to $47 million over a five-year period; initial projects include Flagship-founded Apriori Bio and Prologue Medicines CAMBRIDGE, Mass., Sept. 23, 2026 /PRNewswire/ - Flagship Pioneering, a scientific innovation engine for transformative platforms and products, has been awarded a first-of-its-kind contract by the Department of War (DoW) under the ONTARGET - Operationalizing Novel Technologies for Advanced Rapid Generation of Effective Medical Countermeasures (MCM) - program. The award of up to $47 million will be executed over a five-year period, beginning with a select set of initial projects and allowing for additional projects to be initiated throughout the contract term. The strategic partnership will leverage Flagship's unique ecosystem of more than 40 pioneering companies and technological capabilities across translational science, platform engineering, drug development, enabling technologies, and AI/machine learning to support the rapid testing of tailored solutions across a broad range of DoW MCM priorities and evolving threats. The initial projects include Flagship-founded companies Apriori Bio and Prologue Medicines. The award will be administered by Flagship Health Security Corporation, a new subsidiary of Flagship Pioneering created specifically to facilitate government partnerships. "Through the ONTARGET program, we can harness our nation's greatest strength - its unmatched capacity to invent and scale breakthrough technologies - to stay ahead of evolving threats and safeguard national security," said Noubar Afeyan, Ph.D., Founder and CEO of Flagship Pioneering. "By mobilizing Flagship's ecosystem of first-in-category, AI-enabled biotechnologies, we are not only advancing next-generation countermeasures, we will also be building the innovation infrastructure to define America's strategic advantage for decades ahead." The agreement marks a strategic shift in how DoW partners with the private sector, establishing a new, more agile model for defense solutions. Instead of contracting for a specific product, DoW and Flagship will evaluate a broad range of cutting-edge platform technologies from Flagship's ecosystem of companies for their potential to accelerate and optimize medical countermeasure development and address an evolving range of DoW warfighter protection priorities. The ONTARGET program is managed by the Joint Science and Technology Office (JSTO) within the Department of War's Chemical and Biological Defense Program. The ONTARGET program aims to stay ahead of evolving threats - adaptive and engineered - by partnering with the private sector in unique and powerful ways to enhance medical countermeasure performance, accelerate development timelines, and strengthen response effectiveness. "Ultimately, our goal is to get the best technology into the hands of our warfighters as quickly as possible. The ONTARGET agreement provides a new pathway to do just that, by identifying and maturing the most promising biotechnologies the private sector has to offer," said Robert Kristovich, Ph.D., Director of JSTO at the Defense Threat Reduction Agency. "This keeps our military personnel equipped to face any biological challenge." The program targets several priority capability areas essential for national defense preparedness: * Broad-spectrum countermeasures against emerging threats * Precision delivery technologies to improve efficacy and reduce side effects * Toxin-neutralizing platforms for enhanced protection * Novel approaches to immune enhancement and viral pathway disruption * Integration of AI/ML to optimize medical countermeasure discovery and development Initial Research Projects The award will provide proof-of-concept funding for a select set of cutting-edge projects, each leveraging distinct Flagship technologies. The Department of War will have the opportunity to advance additional projects throughout the five-year agreement with Flagship. Apriori Bio - Broadly Protective Medical Countermeasures Apriori Bio will apply its Octavia(TM) platform, a biology-enabled AI platform for the design of variant-resilient countermeasures, to rapidly generate one or more stable, cross-protective candidates. By anticipating viral evolution, the platform can enable faster, more resilient countermeasure development, reducing response timelines, and strengthening biological threat readiness against evolving and engineered threats. Prologue Medicines - Immunomodulatory Protein Discovery Prologue Medicines' DELVE platform applies advanced AI approaches to mine millions of viral proteins and identify evolutionarily-optimized functions that can modulate and enhance human immune responses. This project seeks to leverage DELVE to strengthen immune resilience and enable rapid, adaptable countermeasures that can be deployed across a broad range of emerging and engineered threats. About Flagship Pioneering Flagship Pioneering invents and builds platform companies, each with the potential for multiple products that transform human health, sustainability and beyond. Since its launch in 2000, Flagship has originated and fostered more than 100 scientific ventures, operating with $14 billion of assets under its direction as of its latest capital raise, announced in July 2024. The current Flagship ecosystem comprises more than 40 companies, including Generate Biomedicines, Inari, Lila Sciences, Moderna, Sana Biotechnology, Tessera Therapeutics and Valo Health. Flagship Health Security Corporation is a subsidiary of Flagship Pioneering created specifically to facilitate government partnerships. Media contact SOURCE Flagship Pioneering

PMGroup
Sep 16th, 2026
Chiesi appoints David Khougazian as Group CEO.

Chiesi appoints David Khougazian as Group CEO. Khougazian most recently served as Executive Partner, Growth, and Head of Global Engagement at Flagship Pioneering Chiesi Group has appointed David Khougazian as Group Chief Executive Officer (CEO). Khougazian joins Chiesi following an international career spanning more than 25 years across the global healthcare and life sciences sectors. Most recently, he served as Executive Partner, Growth, and Head of Global Engagement at Flagship Pioneering, where he supported the growth and development of science-driven healthcare companies and worked closely with leadership teams on long-term value creation, partnerships, financing and organisational development. Following a thorough selection process led by the Board of Directors, Khougazian will succeed Interim Group CEO Jean-Marc Bellemin, who has successfully led the Group since 15 May 2026, while also continuing in his permanent role as Group CFO. Maria Paola Chiesi, Chiesi Group Chair, commented: "Innovation has always been at the heart of Chiesi's mission and long-term vision. David's appointment reflects our ambition to accelerate this journey and strengthen Chiesi's ability to innovate in a healthcare environment that is changing faster than ever. "David brings a unique combination of global healthcare leadership, operational experience and exposure to some of the most dynamic areas of biotech innovation, which makes him exceptionally well positioned to guide Chiesi through this next chapter. Khougazian commented: "The healthcare landscape is evolving rapidly, creating extraordinary opportunities to advance innovation and transform patient outcomes. I look forward to working alongside Chiesi colleagues around the world to further strengthen the Group's innovation capabilities, advance its pipeline and partnerships, and create lasting value for patients, healthcare systems and society." 16th September 2026 Latest intelligence.