AI tools, scored for your job
Get paid to train AI
Hiring now · posted today Science Full-time · Remote

Research Engineer / Scientist, Pre-training

at Anthropic

Pay not published

The rate is shared during the application.

Remote · United States Language: English Posted 2 Nov 2026

About this role

Preparing for this role? See the best AI tools for data scientists, practise with ready-made prompts for data scientists, read AI for Business Analysts: Tools & Tips That Actually Help and take the free 30-day AI challenge.

About Anthropic

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

About the role

Anthropic is at the forefront of AI research, dedicated to developing safe, ethical, and powerful artificial intelligence. Our mission is to ensure that transformative AI systems are aligned with human interests. We are seeking a Research Engineer to join our Pre-training team, responsible for developing the next generation of large language models. In this role, you will work at the intersection of cutting-edge research and practical engineering, contributing to the development of safe, steerable, and trustworthy AI systems.

Key Responsibilities

  • Conduct research and implement solutions in areas such as model architecture, algorithms, data processing, and optimizer development

  • Independently lead small research projects while collaborating with team members on larger initiatives

  • Design, run, and analyze scientific experiments to advance our understanding of large language models

  • Optimize and scale our training infrastructure to improve efficiency and reliability

  • Develop and improve dev tooling to enhance team productivity

  • Contribute to the entire stack, from low-level optimizations to high-level model design

Qualifications

  • Advanced degree (MS or PhD) in Computer Science, Machine Learning, or a related field

  • Strong software engineering skills with a proven track record of building complex systems

  • Expertise in Python and experience with deep learning frameworks (PyTorch preferred)

  • Familiarity with large-scale machine learning, particularly in the context of language models

  • Ability to balance research goals with practical engineering constraints

  • Strong problem-solving skills and a results-oriented mindset

  • Excellent communication skills and ability to work in a collaborative environment

  • Care about the societal impacts of your work

Preferred Experience

  • Work on high-performance, large-scale ML systems

  • Familiarity with GPUs, Kubernetes, and OS internals

  • Experience with language modeling using transformer architectures

  • Knowledge of reinforcement learning techniques

  • Background in large-scale ETL processes

You'll thrive in this role if you

  • Have significant software engineering experience

  • Are results-oriented with a bias towards flexibility and impact

  • Willingly take on tasks outside your job description to support the team

  • Enjoy pair programming and collaborative work

  • Are eager to learn more about machine learning research

  • Are enthusiastic to work at an organization that functions as a single, cohesive team pursuing large-scale AI research projects

  • Are working to align state of the art models with human values and preferences, understand and interpret deep neural networks, or develop new models to support these areas of research

  • View research and engineering as two sides of the same coin, and seek to understand all aspects of our research program as well as possible, to maximize the impact of your insights

  • Have ambitious goals for AI safety and general progress in the next few years, and you’re working to create the best outcomes over the long-term.

Sample Projects

  • Optimizing the throughput of novel attention mechanisms

  • Comparing compute efficiency of different Transformer variants

  • Preparing large-scale datasets for efficient model consumption

  • Scaling distributed training jobs to thousands of GPUs

  • Designing fault tolerance strategies for our training infrastructure

  • Creating interactive visualizations of model internals, such as attention patterns

 

The annual compensation range for this role is listed below. 

For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role.

Annual Salary:$500,000—$850,000 USD

Logistics

Minimum education:Bachelor’s degree or an equivalent combination of education, training, and/or experience

Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience

Minimum years of experience:Years of experience required will correlate with the internal job level requirements for the position

Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.

Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.

We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed.  Research shows that people who identify as being from underrepresented groups are more prone to experiencing imposter syndrome and doubting the strength of their candidacy, so we urge you not to exclude yourself prematurely and to submit an application if you're interested in this work. We think AI systems like the ones we're building have enormous social and ethical implications. We think this makes representation even more important, and we strive to include a range of diverse perspectives on our team.

Your safety matters to us. To protect yourself from potential scams, remember that Anthropic recruiters only contact you from @anthropic.com email addresses. In some cases, we may partner with vetted recruiting agencies who will identify themselves as working on behalf of Anthropic. Be cautious of emails from other domains. Legitimate Anthropic recruiters will never ask for money, fees, or banking information before your first day. If you're ever unsure about a communication, don't click any links—visit anthropic.com/careers directly for confirmed position openings.

How we're different

We believe that the highest-impact AI research will be big science. At Anthropic we work as a single cohesive team on just a few large-scale research efforts. And we value impact — advancing our long-term goals of steerable, trustworthy AI — rather than work on smaller and more specific puzzles. We view AI research as an empirical science, which has as much in common with physics and biology as with traditional efforts in computer science. We're an extremely collaborative group, and we host frequent research discussions to ensure that we are pursuing the highest-impact work at any given time. As such, we greatly value communication skills.

The easiest way to understand our research directions is to read our recent research. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences.

Come work with us!

Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues. Guidance on Candidates' AI Usage: Learn about our policy for using AI in our application process.

This is a remote role. Applicants must be located in: United States.

How applying works

  1. Click Apply now and enter your email.
  2. You go straight to the application. We email you a copy of this role and your link.
  3. You apply on Anthropic's own careers page. Zekai is not the employer and never charges you.
How to get this job

Your plan for “Research Engineer / Scientist, Pre-training”

Are you ready? Check what you have

Taken from this listing's own requirements.

0 / 6

What to know before you apply

Location
Only applicants located in United States can be paid for this role. Platforms usually verify where you are, so apply only if you are based there.
Credentials
The listing asks for a PhD. Put it in the first line of your profile: reviewers screen for it before anything else.
Timing
This listing is new today. Projects can close once they have enough people, so it is worth applying while it is open.
How to stand out for data scientists
  • Mirror the job's own wording in your CV: reviewers and screening tools look for the skills listed above.
  • Show real work: a portfolio, GitHub, case study or numbers from past projects beats a long list of duties.
  • Show how you already use AI tools in your work. AI companies hire people who use their products well.
  • Apply early and follow up once, politely, if you hear nothing in two weeks.
Prepare free with Zekai

3 steps to stand out as one of the best data scientists

  1. 01

    Know the AI tools data scientists use

    AI companies expect you to know the tools of your trade. Try the ones your profession already uses before the interview.

    All 576 AI tools for data scientists →
  2. 02

    Practise with real prompts

    Many tests ask you to write or judge prompts in your field. Practise on these first.

    Correlation Matrix and Interpretation

    Generate Python code to calculate the Pearson correlation matrix for the numeric columns in my pandas DataFrame df. The columns are: [[LIST_OF_NUMERIC_COLUMNS]]. Then, do the following: 1. Create a heatmap of the correlation matr…

    Generate Interaction Features

    Generate Python code to create interaction features for a machine learning model. My pandas DataFrame df has the following numeric features: [[COLUMN_A, COLUMN_B, COLUMN_C]]. Create all pairwise interaction features (e.g., A*B, A…

    Prompt library for data scientists →
  3. 03

    Take the free 30-day AI challenge

    Five minutes a day to get confident with AI in your own work. Day 1 is open now, no card needed.

    Start Day 1 free →

    Guides for data scientists

Data Scientists

More paid AI roles for data scientists

Confidential clientAI training · Data Scientists

Agent Engineer

Top pay
  • Remote · United States
  • Contract · flexible hours

We are looking for engineers who build and operate LLM agents in production, and who have real visibility into how ag…

$100–$500/hr
81d ago
Confidential clientAI training · Data Scientists

Data Science Specialist

Top pay
  • Remote · United States, United Kingdom +1
  • Contract · flexible hours

Our partner is engaging Data Science Specialists to contribute to a customer's project focused on elevating the quali…

$150–$350/hr
38d ago
Confidential clientAI training · Data Scientists

Data Science Specialist

Top pay10 open
  • Remote · United States, United Kingdom +1
  • Contract · flexible hours

Our partner is engaging Data Science Specialists to contribute to a customer's project focused on elevating the quali…

$150–$350/hr
3d ago
Confidential clientAI training · Data Scientists

Machine Learning Engineer Talent Network

Top pay
  • Remote · United States
  • Contract · flexible hours

Join our Machine Learning Engineer Expert Network to connect with leading AI labs and companies seeking your expertis…

$70–$250/hr
248d ago
Confidential clientAI training · Data Scientists

Senior Data Scientist and Data Engineering Experts

Top pay
  • Remote · United States
  • Contract · flexible hours

Our partner is working with a leading AI research lab on a project to improve how AI systems do real-world data scien…

$120–$180/hr
6d ago
new in the last 24 hours

New roles in your inbox every morning

Pick your field. One short email a day, only when new roles open. Unsubscribe any time.

Roles come from public listings and change daily. Pay is what the listing shows; offers depend on your test, experience and country. If you join through a Zekai link, the platform may pay Zekai a fee. Your pay stays the same.

Research Engineer / Scientist, Pre-training
Get paid to train AI →

See Zekai first in Google