Machine Learning Research Engineer

The Company

FL105 is a privately held early-stage company pioneering the use of artificial intelligence to transform human psychological fitness and wellbeing. We are creating aplatform that empowers people tobuild a life they are proud of and fulfilled by.

FL105 is backed by Flagship Pioneering an innovation enterprise that conceives creates resources and builds companies that invent breakthrough technologies that transform the world. Flagship has created over 100 groundbreaking companies since 2000 including Moderna.

TheRole

FL105 seeksa talentedMachine LearningResearch Engineer.The successful candidate willinnovatedevelopand apply machine learning (ML) methods to create foundational psychological tools. This position is ideal for someone with broad expertise in machine learning reinforcement learning from human feedback supervised fine tuning and computational sciences who is looking to join a very dynamic and innovative environment and pioneer the next frontier of innovation application and human-aiinteractions enabledbystate-of-the-artmodels.A successful candidate should have a passion for buildingtechnologies that enable others to maximize their potential.

Working at FL105 you will have the opportunity to work with world-class scientists engineers and researchers who work on cutting-edgeairesearch and applications.

KeyResponsibilities

• Design develop and deploy ML-powered applications thatleveragelarge language models (LLMs) to address complex challenges in wellbeing.
• Collaborate with psychological experts and translate interdisciplinary insights into computational frameworks.
• Help advance the state of the art in context engineering agentic AI and learning from human feedback.
• Build scalable pipelines for data collection labeling training and deployment of LLM-based systems.
• Support the integration of ML systems into real-world applications with measurable outcomes.
• Communicate findings to a multi-disciplinary audience.

Professional Experience & Qualifications

• Masters level (or above) experience in CS ML and AI is preferred but can be relaxed for exceptional candidates.
• Strong foundationin machine learning deep learning and natural language processing (NLP).
• Publications at top ML / NLP venues such as NeurIPS ICML ACL and EMNLP are a bonus.
• Proven experience deploying LLM-powered applications in production environments includingexpertisein frameworks likePyTorchvLLM andLangGraph.
• Proficiencyin Python and tools for ML developmentlarge-scaledatapipelines and pre-processing andstandardevaluationprotocols.
• Self-motivated and comfortableworking in ambiguous fast-moving environments with evolving goals.
• Excellent communication and presentation skills.
• Must be able to think independently and work collaboratively.
• Experience in a previous startup is a plus.

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 hasoriginatedmore 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.

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 isstrictly prohibitedunless contacted directly by Flagship Pioneerings internal Talent Acquisition team. Any resumesubmittedby 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 $120000 - $192500. Compensation for the role will depend on a number of factors including a candidates qualifications skills competencies and experience. FL105 currently offers healthcare coverage annual incentive program retirement benefits and a broad range of other benefits. Compensation and benefits information is based on FL105s good faith estimate as of the date of publication and may be modified in the future.

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