Reddit

Senior Machine Learning Systems Engineer, Ranking Platform

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

Qualifications

  • 5+ years of experience in software engineering for large-scale systems using languages like Go, Python, or C++
  • Extensive background in designing and implementing ML systems, ideally recommendation systems
  • Experience with tooling for deployment, automation, and ML monitoring
  • Strong organizational skills and attention to detail to manage multiple projects
  • BS in Computer Science or equivalent practical experience
  • Familiarity with software engineering best practices including unit testing and documentation
  • Self-directed with an entrepreneurial spirit, thriving in fast-paced environments

Responsibilities

  • Design and implement the next generation ML ranking system for personalized feeds and search
  • Develop ML and Generative AI systems in scalable cloud-based environments
  • Collaborate with Product, Infrastructure, and Engineering teams to translate requirements
  • Write efficient, maintainable code to promote rapid iteration
  • Champion engineering best practices and processes within the team
  • Conduct code reviews and contribute to team knowledge sharing

Benefits

  • Comprehensive healthcare benefits and income replacement programs
  • 401k with employer match
  • Global benefit programs supporting professional development and lifestyle
  • Family planning support and gender-affirming care
  • Mental health and coaching benefits
  • Flexible vacation and paid volunteer time off
  • Generous paid parental leave
Full Job Description
How You'll Have Impact

As a Senior Software Engineer, ML Ranking Platform, you will design, implement and maintain highly robust, scalable, reliable and performant ranking systems that power personalized feeds, search, and other products at Reddit scale. You'll drive and deliver high-impact projects, building the ranking engines that orchestrate workflows for a reliable and performant ML-based system. Your work not only powers Reddit feeds; it'll also shape how communities connect, grow, and thrive across Reddit!
  • Design and implement the next generation ML ranking system that powers the personalized feeds, search and other products at Reddit
  • Design and develop ML and Generative AI systems in cloud-based production environments at scale
  • Partner closely with Product, Infrastructure and Engineering teams and translate requirements into scalable ML systems
  • Write efficient, scalable and maintainable code that will help us iterate quickly and safely
  • Champion and drive engineering processes and best practices
  • Raise the bar for engineering across the team through code reviews, mentorship and knowledge sharing
Who You Might Have:
  • 5+ years of experience as a software engineer developing large-scale distributed systems and data intensive ML based system, using Go, Python, C++ or any object oriented programming language
  • 5+ years of experience with designing and implementing large-scale performant and reliable machine learning systems. Experience with recommendation systems is preferred.
  • Experience with developing and improving tools such as deployment, automation, system diagnosis, ML monitoring etc.
  • Strong organizational skills with the ability to prioritize tasks and keep projects on schedule with a strong attention to detail
  • BS degree in Computer Science, a similar technical field of study or equivalent practical experience
  • Familiar with software engineering best practices such as unit testing and code reviews, design, and documentation
  • Entrepreneurial spirit. You are self-directed, innovative, and biased towards action in fast-paced environments. You love to build new things and thrive in ambiguity and even failure
  • Excellent communication skills. You collaborate effectively with teams in a fully remote environment and discuss complex topics with technical and non-technical audiences

Benefits:
  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k with Employer Match
  • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Paid Volunteer Time Off
  • Generous Paid Parental Leave

#LI-Remote

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
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2005

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