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2027 Applied Science Internship - Reinforcement Learning & Optimization (Machine Learning) - United States, PhD Student Science Recruiting

Pay
Pay amount needs review — pay source
The starting pay for this position is listed below. Starting Day 1 of employment, Amazon offers EAP, Mental Health Support, Medical Advice Line, 401(k) matching. Learn more about our benefits at https://hiring.amazon.com/why-amazon/benefits. Seattle, WA, USA - 135,660.00 USD Annually
Read the full posting
Work setting
Not stated
Employment
Full-time — employment source
Employment type in the employer’s posting: full-time
From the employer’s posting

Before you apply

New graduates
For current students- Are enrolled in a PhD

What you’ll work on

Full posting
  • Develop novel RL algorithms and apply them to complex, real-world challenges

  • Design, develop and evaluate highly innovative ML models for complex business problems

  • Build scalable, automated processes for large-scale data analysis and model implementation

  • Research and apply the latest ML techniques from academia and industry

From the employer’s posting
with a focus on developing novel RL algorithms and applying them to complex, real-world challenges
Design, development and evaluation of highly innovative ML models for solving complex business problems
Develop scalable, efficient, automated processes for large scale data analyses, model development, model validation and model implementation.
Research and apply the latest ML techniques and best practices from both academia and industry.

What you’ll bring

All qualifications

Core experience

  • Currently enrolled in a PhD
  • Programming in Java or Python with PyTorch or JAX
  • Demonstrated research depth shown through publications, thesis work, or equivalent
  • Able to relocate to the internship location
  • Available full-time (40 hours per week) for the whole internship
Qualification wording
Are enrolled in a PhD
Experience programming in Java, Python with PyTorch or JAX
Demonstrated science depth in a specific research area, evidenced through publications, thesis work, or equivalent contributions
Can relocate to where the internship is based
Must be available for full-time (40 hours per week) internship for the whole duration of the internship
Education & alternatives
A day in the life - Develop scalable, efficient, automated processes for large scale data analyses, model development, model validation and model implementation. - Design, development and evaluation of highly innovative ML models for solving complex business problems. - Research and apply the latest ML techniques and best practices from both academia and industry. - Think about customers and how to improve the customer delivery experience. - Use and analytical techniques to create scalable solutions for business problems. Basic qualifications - Are enrolled in a PhD - Can relocate to where the internship is based - Experience programming in Java, Python with PyTorch or JAX - Experience with one or more of the following: Optimization, Programming/Scripting Languages, Statistics, Reinforcement Learning, Causal Inference, Large Language Models, Time Series, Graph Modeling, Supervised/Unsupervised Learning, Deep Learning, Predictive Modeling - Demonstrated science depth in a specific research area, evidenced through publications, thesis work, or equivalent contributions - Must be available for full-time (40 hours per week) internship for the whole duration of the internship Preferred qualifications - Have publications at top-tier peer-reviewed conferences or journals - Experience in state-of-the-art deep learning models architecture design and deep learning training and optimization and model pruning - Experience implementing algorithms using modern RL and deep learning toolkits (e.g. PyTorch, JAX, Stable Baselines, RLlib, or custom RL frameworks) - Experience with AI-assisted development tools to accelerate research, coding, or evaluation
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Posting record

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Actively hiringFirst seen by us 1 day ago, still listed, and not a repost of an earlier posting.

Status in our records
Live
First seen by us
Nov 13, 20261 day ago
Recorded sightings
2
Last seen by us
Nov 14, 2026
Employer says posted
Sep 30, 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 1,394 postings in the last year. Stated ranges, not salaries paid.

Time since we first saw it

Day 1

Early. Similar jobs usually come down between day 8 and day 76.

From 5,507 similar postings that came down. Coming down is not always a hire.

Amazon is hiring

550 open jobs

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

Hiring record

See how this role fits your experience

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  • Java
  • Python
  • PyTorch
Where the posting names them
A day in the life - Develop scalable, efficient, automated processes for large scale data analyses, model development, model validation and model implementation. - Design, development and evaluation of highly innovative ML models for solving complex business problems. - Research and apply the latest ML techniques and best practices from both academia and industry. - Think about customers and how to improve the customer delivery experience. - Use and analytical techniques to create scalable solutions for business problems. Basic qualifications - Are enrolled in a PhD - Can relocate to where the internship is based - Experience programming in Java, Python with PyTorch or JAX - Experience with one or more of the following: Optimization, Programming/Scripting Languages, Statistics, Reinforcement Learning, Causal Inference, Large Language Models, Time Series, Graph Modeling, Supervised/Unsupervised Learning, Deep Learning, Predictive Modeling - Demonstrated science depth in a specific research area, evidenced through publications, thesis work, or equivalent contributions - Must be available for full-time (40 hours per week) internship for the whole duration of the internship Preferred qualifications - Have publications at top-tier peer-reviewed conferences or journals - Experience in state-of-the-art deep learning models architecture design and deep learning training and optimization and model pruning - Experience implementing algorithms using modern RL and deep learning toolkits (e.g. PyTorch, JAX, Stable Baselines, RLlib, or custom RL frameworks) - Experience with AI-assisted development tools to accelerate research, coding, or evaluation
- Are enrolled in a PhD - Can relocate to where the internship is based - Experience programming in Java, Python with PyTorch or JAX - Experience with one or more of the following: Optimization, Programming/Scripting Languages, Statistics, Reinforcement Learning, Causal Inference, Large Language Models, Time Series, Graph Modeling, Supervised/Unsupervised Learning, Deep Learning, Predictive Modeling - Demonstrated science depth in a specific research area, evidenced through publications, thesis work, or equivalent contributions - Must be available for full-time (40 hours per week) internship for the whole duration of the internship Preferred qualifications - Have publications at top-tier peer-reviewed conferences or journals - Experience in state-of-the-art deep learning models architecture design and deep learning training and optimization and model pruning - Experience implementing algorithms using modern RL and deep learning toolkits (e.g. PyTorch, JAX, Stable Baselines, RLlib, or custom RL frameworks) - Experience with AI-assisted development tools to accelerate research, coding, or evaluation Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Your next step

Complete your application on www.amazon.jobs. The employer’s form will show what is required.

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About Amazon

People
About 1,207,759 in 2024.Benefit plan filings (Form 5500)
Company
Listed as AMZN.
H-1B visas
6,217 approved for new hires in fiscal 2025.US Citizenship and Immigration Services
Layoff notices
Notices this year and last cover 2,978 people. The latest was filed November 2, 2026.State WARN notices

Demand for ML Engineer roles

New ML Engineer postings at the employers we follow are up 10% over the last 6 weeks compared with the 6 before.

Weekly new ML Engineer postings at the same employers, from the week of August 17 to the week of November 2. The fewest in a week was 612, the most 1,081, and the latest week had 1,068.
August 17Last week

Each bar is one week of new postings. The darkest bars are the last 6 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 ↗

Unlock the Future with Amazon Science!

Calling all visionary minds passionate about the transformative power of machine learning! Amazon is seeking boundary-pushing graduate student scientists who can turn revolutionary theory into awe-inspiring reality. Join our team of visionary scientists and embark on a journey to revolutionize the field by harnessing the power of cutting-edge techniques in bayesian optimization, time series, multi-armed bandits and more.

At Amazon, we don't just talk about innovation – we live and breathe it. You'll conducting research into the theory and application of deep reinforcement learning. You will work on some of the most difficult problems in the industry with some of the best product managers, scientists, and software engineers in the industry. You will propose and deploy solutions that will likely draw from a range of scientific areas such as supervised, semi-supervised and unsupervised learning, reinforcement learning, advanced statistical modeling, and graph models.

Throughout your journey, you'll have access to unparalleled resources, including state-of-the-art computing infrastructure, cutting-edge research papers, and mentorship from industry luminaries. This immersive experience will not only sharpen your technical skills but also cultivate your ability to think critically, communicate effectively, and thrive in a fast-paced, innovative environment where bold ideas are celebrated.

Join us at the forefront of applied science, where your contributions will shape the future of AI and propel humanity forward. Seize this extraordinary opportunity to learn, grow, and leave an indelible mark on the world of technology.

Amazon has positions available for Machine Learning Applied Science Internships in, but not limited to Arlington, VA; Bellevue, WA; Boston, MA; New York, NY; Palo Alto, CA; San Diego, CA; Santa Clara, CA; Seattle, WA.

Key job responsibilities
We are particularly interested in candidates with expertise in: Optimization, Programming/Scripting Languages, Statistics, Reinforcement Learning, Causal Inference, Large Language Models, Time Series, Graph Modeling, Supervised/Unsupervised Learning, Deep Learning, Predictive Modeling

In this role, you will work alongside global experts to develop and implement novel, scalable algorithms and modeling techniques that advance the state-of-the-art in areas at the intersection of Reinforcement Learning and Optimization within Machine Learning. You will tackle challenging, groundbreaking research problems on production-scale data, with a focus on developing novel RL algorithms and applying them to complex, real-world challenges.

The ideal candidate should possess the ability to work collaboratively with diverse groups and cross-functional teams to solve complex business problems, and to communicate research findings clearly. A successful candidate will be a self-starter, comfortable with ambiguity, with strong attention to detail and the ability to thrive in a fast-paced, ever-changing environment.

Leverage AI-powered tools where applicable to accelerate research, experimentation, and prototyping. Critically review and validate outputs from AI tools and automated systems.

A day in the life
- Develop scalable, efficient, automated processes for large scale data analyses, model development, model validation and model implementation.
- Design, development and evaluation of highly innovative ML models for solving complex business problems.
- Research and apply the latest ML techniques and best practices from both academia and industry.
- Think about customers and how to improve the customer delivery experience.
- Use and analytical techniques to create scalable solutions for business problems.

Basic qualifications

- Are enrolled in a PhD
- Can relocate to where the internship is based
- Experience programming in Java, Python with PyTorch or JAX
- Experience with one or more of the following: Optimization, Programming/Scripting Languages, Statistics, Reinforcement Learning, Causal Inference, Large Language Models, Time Series, Graph Modeling, Supervised/Unsupervised Learning, Deep Learning, Predictive Modeling
- Demonstrated science depth in a specific research area, evidenced through publications, thesis work, or equivalent contributions
- Must be available for full-time (40 hours per week) internship for the whole duration of the internship

Preferred qualifications

- Have publications at top-tier peer-reviewed conferences or journals
- Experience in state-of-the-art deep learning models architecture design and deep learning training and optimization and model pruning
- Experience implementing algorithms using modern RL and deep learning toolkits (e.g. PyTorch, JAX, Stable Baselines, RLlib, or custom RL frameworks)
- Experience with AI-assisted development tools to accelerate research, coding, or evaluation

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The starting pay for this position is listed below. Starting Day 1 of employment, Amazon offers EAP, Mental Health Support, Medical Advice Line, 401(k) matching. Learn more about our benefits at https://hiring.amazon.com/why-amazon/benefits. 



Seattle, WA, USA - 135,660.00 USD Annually
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Pay
The starting pay for this position is listed below. Starting Day 1 of employment, Amazon offers EAP, Mental Health Support, Medical Advice Line, 401(k) matching. Learn more about our benefits at https://hiring.amazon.com/why-amazon/benefits. Seattle, WA, USA - 135,660.00 USD Annually
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Seattle, Washington, USA

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