Reddit

Senior Machine Learning Engineer, Safety

Reddit$216K — $303K *
US-AnywhereRemote in United States
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of experience as a Machine Learning Engineer specializing in NLP and AI model development.
  • Strong proficiency in Python and deep learning libraries such as TensorFlow and PyTorch.
  • Expertise in distributed training frameworks to leverage hardware efficiently.
  • In-depth knowledge of data preprocessing, tokenization, and language modeling techniques.
  • Commitment to creating impactful and responsible AI solutions.
  • Strong communication skills for collaboration with diverse teams.
  • Self-motivated and action-oriented in dynamic environments.

Responsibilities

  • Design and deploy ML models, especially large language models for processing language.
  • Develop and maintain efficient training pipelines to enhance performance.
  • Collaborate with cross-functional teams to gather requirements and refine model architectures.
  • Perform evaluations and optimizations on model performance metrics and biases.
  • Stay informed on the latest NLP research and advancements in large language models.
  • Contribute to ethical AI practices and guidelines for responsible ML development.

Benefits

  • Comprehensive medical, dental, and vision insurance.
  • 401(k) plan with employer matching contributions.
  • Generous vacation time and paid parental leave.
  • Equity options in the form of restricted stock units.
Full Job Description
About the Role:

The Safety ML team is hiring a Machine Learning Engineer to build and iterate on the next generation of safety systems at Reddit. In this pivotal role, you will be responsible for developing, training, and optimizing state-of-the-art large language models (LLMs) in order to scalably and efficiently support the enforcement of Reddit Rules. You will be partnering closely with other Safety teams (Operations, Engineering, Product, Data Science) at Reddit to identify and build solutions that will help keep users safe as Reddit grows.

Responsibilities:
  • Design, develop, optimize and deploy ML models, including large language models, for various natural language processing tasks.
  • Implement and maintain training pipelines, leveraging distributed training and optimizing for performance and efficiency.
  • Collaborate with cross-functional teams to gather requirements, define model architectures and iterate on model development.
  • Conduct model evaluations, performance analysis, and optimization to improve model accuracy and reduce biases.
  • Stay up-to-date with the latest research and advancements in the field of natural language processing, multimodal signals, and large language models.
  • Contribute to the development of best practices, guidelines, and ethical AI principles for responsible ML development and deployment.

Required Qualifications:
  • 5+ years of relevant MLE experience in natural language processing, deep learning, and AI model development.
  • Strong background in Python programming and deep learning frameworks like TensorFlow, PyTorch, or Hugging Face Transformers.
  • Expertise in distributed training frameworks (e.g., Ray Training, PyTorch Distributed), and efficient utilization of hardware resources.
  • Proficiency in data preprocessing, tokenization, embeddings, and language modeling techniques.
  • Passion for developing scalable, well-designed, and responsible AI solutions that positively impact society.
  • Excellent communication and collaboration skills, with the ability to discuss complex technical topics with diverse teams.
  • Entrepreneurial spirit, self-motivation, and a bias towards action in fast-paced environmen

#LI-SP1

Pay Transparency:

This job posting may span more than one career level.

In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/.

To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below.

The base salary range for this position is:

$216,700-$303,400 USD

In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.

During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors.

About Reddit

Reddit is an American social news aggregation, web content rating, and discussion website. Registered members submit content to the site such as links, text posts, images, and videos, which are then voted up or down by other members. Posts are organized by subject into user-created boards called "communities" or "subreddits", which cover topics such as news, politics, religion, science, movies, video games, music, books, sports, fitness, cooking, pets, and image-sharing. Submissions with more upvotes appear towards the top of their subreddit and, if they receive enough upvotes, ultimately on the site's front page. Although there are strict rules prohibiting harassment, it still occurs, and Reddit administrators moderate the communities and close or restrict them on occasion. Moderation is also conducted by community-specific moderators, who are not considered Reddit employees. As of September 2021, Reddit ranks as the 19th-most-visited website in the world and 7th most-visited website in the U.S., according to Alexa Internet. About 42–49.3% of its user base comes from the United States, followed by the United Kingdom at 7.9–8.2% and Canada at 5.2–7.8%. Twenty-two percent of U.S. adults aged 18 to 29 years, and 14 percent of U.S. adults aged 30 to 49 years, regularly use Reddit. Reddit was founded by University of Virginia roommates Steve Huffman and Alexis Ohanian, with Aaron Swartz, in 2005. Condé Nast Publications acquired the site in October 2006. In 2011, Reddit became an independent subsidiary of Condé Nast's parent company, Advance Publications. In October 2014, Reddit raised $50 million in a funding round led by Sam Altman and including investors Marc Andreessen, Peter Thiel, Ron Conway, Snoop Dogg, and Jared Leto. Their investment valued the company at $500 million then. In July 2017, Reddit raised $200 million for a $1.8 billion valuation, with Advance Publications remaining the majority stakeholder. In February 2019, a $300 million funding round led by Tencent brought the company's valuation to $3 billion. In August 2021, a $700 million funding round led by Fidelity Investments raised that valuation to over $10 billion.
Learn more about Reddit
Industry
Founded
2005

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