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Principal Scientist, Machine Learning


Job Location:

Cambridge, MA - USA

Monthly Salary: $ 208000 - 286000
Posted: 21 August 2026 (2 days ago)
Application Deadline: 18 November 2026
Vacancies: 1 Vacancy

Job Summary

ABOUT PIONEERING INTELLIGENCE

Pioneering Intelligence builds on Flagship Pioneerings legacy of founding cutting-edge science and computational ventures harnessing recent advances in AI machine learning and data to accelerate fundamental research and create a portfolio of AI-first companies. As part of Flagships integrated model of science entrepreneurship and capital it transforms breakthrough ideas into world-changing companies elevating the AI advances happening across the ecosystem in human health sustainability and
beyond.

THE ROLE

We are seeking a Principal Scientist (Embedded ML/Computational) to lead AI/ML and computational projects that accelerate pharmaceutical R&D across the preclinical translational and clinical continuum working closely with Pioneering Medicines (PM) and across Flagships platform companies as part of the company origination process. You will define and deliver pragmatic AI strategies and oversee method and platform development across omics biomolecule design multi-o systems biology and scientific literature mining ensuring rigor in model development benchmarking scaling and reporting. Throughout you will use LLM-based agents and agentic workflows as the connective tissue that ties these methods into end-to-end pipelines scientists rely on. You will manage cross functional contributors as applicable influence company direction and represent PI to venture teams PM and external partners. The ideal candidate is a self-directed serial deep diver - someone who can move from protein design one week to multi-omics or docking pipelines the next and wire them together with agents that automate scientific workflows.

KEY RESPONSIBILITIES

  • Program Leadership: Lead development implementation control and reporting of several AI/ML and computational projects within assigned ventures and PM programs across the preclinical translational and clinical continuum in line with broader strategic plans of PI and Flagship.
  • Technical Ownership: Own the build scaling benchmarking and maintenance of agentic systems that combine ML and computational biology tools (genomics biomolecule design literature mining system biology etc) which serve as end-to-end systems for accelerating preclinical translational and clinical R&D.
  • Best Practices: Promote operational excellence in AI projects by educating cross-functional collaborators.
  • Team Leadership: Manage and/or coordinate internal and external scientists/engineers and cross functional project teams as applicable; mentor early hires; support recruiting and interview.
  • Planning & Resourcing: Contribute to project planning including budgets resources and timelines; surface risks and tradeoffs early with clear options.
  • Landscape & Strategy: Independently scout emerging literature and the AI/ML and agentic-AI landscape; synthesize concepts to propose new development strategies and identify opportunities to accelerate R&D across the preclinical translational and clinical continuum for PI PM and venture portfolios.
  • Communication & Influence: Influence the course of projects and technical approaches; adapt and present complex findings to diverse audiences to support meaningful interpretation and action.

PROFESSIONAL EXPERIENCE & QUALIFICATIONS

  • Masters or PhD in a relevant field (e.g. machine learning mathematics statistics computational sciences) with 5 years experience scientific/engineering/computational in academic pharmaceutical or biotechnology settings; industry AI/ML experience preferred.
  • Experience driving results directly or indirectly through teams of engineers/scientists in dynamic fastpaced entrepreneurial and technical environments.
  • Clear evidence of sustained independent thought and creativity driving high impact cross disciplinary AI/ML projects.
  • Successful track record of leadership and contribution to decision making on progression of AI/ML models within projects or programs.
  • Depth across multiple core tools and concepts including Python; modern ML frameworks (PyTorch or JAX/TensorFlow); version control; databases; deep learning architectures; and relevant informatics software.
  • Consistent record of outstanding performance reflected in publications patents or high impact internal reports where applicable.

PREFERRED QUALIFICATIONS

  • Breadth across domains such as genomics protein modeling/design proteomics/mass spec multi-omics cheminformatics/docking/ADMET biophysics/MD and scientific literature mining with the ability to connect them using LLM-based agents and agentic workflows.
  • Hands-on experience with agentic AI and orchestration frameworks (e.g. Pydantic AI LangGraph LangChain CrewAI AutoGen).
  • Experience integrating LLMs and model platforms including Anthropic OpenAI Vertex AI and Amazon Bedrock and building evaluation and feedback-loop frameworks for agentic systems.
  • Familiarity with sandboxed code execution and agent harness development.
  • Experience with LLM observability and monitoring tooling and cost-governance / FinOps for AI infrastructure.

WHY PIONEERING INTELLIGENCE

  • Operate at the frontier: Build and deploy AI/ML that directly powers discovery and decision making across multiple new ventures.
  • Own the full stack: From scoping and data contracts to models MLOps and internal UIsship end-to-end systems that scientists rely on daily.
  • Compound impact: Convert one off wins into shared libraries and templates adopted across the PI portfolio.
  • Work with founders: Partner closely with venture leadership and PI platform engineers; influence strategy through hands on delivery.
  • Grow fast: Stretch across domains take on situational leadership present at conferences and help shape first ML teams.

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 more than 100 companies. Many of these companies 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 Flagship we accept impossible missions to enable bigger leaps. Ourcore valuesguide us through uncertainty and toward lasting impact.

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to race color religion sex sexual orientation gender identity national origin disability protected veteran status or any other characteristic protected by law.

We recognize that great candidates often bring unique strengthswithout fulfilling every qualification. If you have some of the experience listed above but not all please apply anyway. We are dedicated to building diverse and inclusive teams and look forward to learning more about your backgroundand interest in Flagship.

Recruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively FSP) do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneerings internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP and FSP will not owe any referral or other fees with respect thereto.

The salary range for this role is $208000 - $286000. Compensation for the role will depend on a number of factors including a candidates qualifications skills competencies and experience. Pioneering Intelligence currently offers healthcare coverage annual incentive program retirement benefits and a broad range of other benefits. Compensation and benefits information is based on Pioneering Intelligences 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 or one of its portfolio companies 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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