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Flagship Pioneering ML Internship

Pay
$7,000–9,000/month — pay source
The Experience: You will collaborate with Flagship Origination Teams and fellow ML scientists/engineers to explore what is made possible by big leaps beyond the current capabilities of AI. You will begin by asking ‘What if’ across a variety of ideas and building a ‘future backwards’ case for what needs to be true for them to become a reality. You will explore the tradeoffs across multiple options, including what and how much data is needed and where it might come from. You will work towards implementation and evaluation plans that enable us to address the real uncertainties, not just what is easy to measure. With a project defined, you will begin to implement, evaluate and iterate. You will leverage Flagship's scalable GPU compute resources, data from our ecosystem, and the extensive expertise available across our teams. You will implement the benchmarking capabilities needed to measure what matters and evaluate your designs. We will learn along the way and be ready to pivot on methods. Final work products are never just a model or a paper, they are wholistic answers to the future backwards questions we ask ourselves when originating the next big leap company. The pay range for this role is $7,000 - $9,000 per month. This role is a short-term engagement that is not eligible for health and welfare benefits. Compensation and benefits information is based on Flagship Pioneering's 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 privacy@flagshippioneering.com.
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Employment
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Before you apply

New graduates
For current studentsJob title: Flagship Pioneering ML Internship

What you’ll work on

Full posting
  • Explore 'what if' ideas and build future-backwards cases for new companies

  • Compare modeling options, including data needs and sources, and plan evaluations

  • Implement, evaluate and iterate on defined projects using Flagship GPU compute

  • Build benchmarks to measure what matters in your designs

From the employer’s posting
You will begin by asking ‘What if’ across a variety of ideas and building a ‘future backwards’ case
You will explore the tradeoffs across multiple options, including what and how much data is needed and where it might come from.
With a project defined, you will begin to implement, evaluate and iterate. You will leverage Flagship's scalable GPU compute resources
You will implement the benchmarking capabilities needed to measure what matters and evaluate your designs.

What you’ll bring

All qualifications

Core experience

  • Software engineering fundamentals
  • Experience implementing machine learning models and workflows across multiple model classes or scientific domains
  • Readiness to use agentic development tools and practices
Qualification wording
Strong candidates will combine software engineering fundamentals
have experience implementing machine learning models and workflows across multiple model classes or scientific domains
a readiness to embrace agentic development tools/practices
Apply at Flagship Pioneering

Posting record

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Actively hiringFirst seen by us 2 days ago, still listed, and not a repost of an earlier posting.

Status in our records
Live
First seen by us
Nov 3, 20262 days ago
Recorded sightings
3
Last seen by us
Nov 5, 2026

These dates show when we found the posting. Check the employer’s website to confirm it is still accepting applications.

How this job compares

Pay

$166K–$240K is typical

The middle half of what similar US postings state. This one doesn’t list pay.

From 1,279 postings in the last year. Stated ranges, not salaries paid.

Time since we first saw it

Day 2

Early. Similar jobs usually come down between day 6 and day 70.

At Flagship Pioneering, jobs usually come down by about day 70.

From 4,474 similar postings that came down, and 5 of Flagship Pioneering’s. Coming down is not always a hire.

Flagship Pioneering is hiring

14 open jobs

Open jobs by the week we first saw them, last 12 weeks.

  • ML Engineer hiring is picking up
  • Its jobs tend to stay up a long time
  • 7% of open jobs were reposted
Hiring record

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Demand for ML Engineer roles

New ML Engineer postings at the employers we follow are up 12% over the last 5 weeks compared with the 5 before.

Weekly new ML Engineer postings at the same employers, from the week of August 17 to the week of October 26. The fewest in a week was 625, the most 1,094, and the latest week had 876.
August 17Last week

Each bar is one week of new postings. The darkest bars are the last 5 weeks.

Counted from the hiring pages we’ve followed for at least five weeks, so employers we add don’t look like growth. Updated weekly.

About the role

We file this job under ML Engineer, by the work the posting describes.

ML engineers put machine learning models into products. They write the code that trains, ships, serves and monitors models so a recommendation or prediction works for real users.

Postings ask for strong Python and software engineering, a framework such as PyTorch, cloud services, and more and more often experience with large language models.

A data scientist often works out which model to build; an ML engineer makes it run reliably in production.

US government figures for computer and information research scientists

Median yearly pay, May 2025
$140,300
Expected change, 2025 to 2035
21.8% more jobsagainst 3.5% for all jobs

The government has no code for ML engineers, so these figures are for the closest group, computer and information research scientists.

Source: US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025) and Employment Projections (2025 to 2035). Occupation code 15-1221.

Job description

View original posting ↗

AI and ML at Flagship Pioneering:
Flagship Pioneering is a scientific innovation engine that invents and builds companies that change the world. We bring entrepreneurial scientists together with experienced company builders and assemble the capital to allow them to take courageous leaps in human health, sustainability, technology and beyond. Artificial intelligence is core to how Flagship conceives and builds companies. We call our approach polyintelligence: human creativity and nature’s intelligence integrating and coexisting with artificial intelligence. This model runs across our ecosystem, where teams pair advances in AI and machine learning with foundational science to move from idea to concept faster and build AI-native companies that were previously out of reach.

Who we are looking for:
Computational scientists and engineers with broad interests and experience applying deep technical experience to out of distribution scientific questions. Standalone implementation isn’t the goal, it is creatively spotting opportunities where extension, modification and combination of bleeding edge computational and technical approaches can unlock new capabilities to solve consequential problems. Strong candidates will combine software engineering fundamentals with a readiness to embrace agentic development tools/practices and have experience implementing machine learning models and workflows across multiple model classes or scientific domains.

The Experience:
You will collaborate with Flagship Origination Teams and fellow ML scientists/engineers to explore what is made possible by big leaps beyond the current capabilities of AI. You will begin by asking ‘What if’ across a variety of ideas and building a ‘future backwards’ case for what needs to be true for them to become a reality. You will explore the tradeoffs across multiple options, including what and how much data is needed and where it might come from. You will work towards implementation and evaluation plans that enable us to address the real uncertainties, not just what is easy to measure.
With a project defined, you will begin to implement, evaluate and iterate. You will leverage Flagship's scalable GPU compute resources, data from our ecosystem, and the extensive expertise available across our teams.  You will implement the benchmarking capabilities needed to measure what matters and evaluate your designs. We will learn along the way and be ready to pivot on methods. Final work products are never just a model or a paper, they are wholistic answers to the future backwards questions we ask ourselves when originating the next big leap company.

The pay range for this role is $7,000 - $9,000 per month. This role is a short-term engagement that is not eligible for health and welfare benefits. Compensation and benefits information is based on Flagship Pioneering's 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 privacy@flagshippioneering.com. 

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Cambridge, MA USA

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