Senior Machine Learning Engineer, Core Experience and Growth at Reddit

This role is ideal for a seasoned Machine Learning Engineer with at least 5 years of experience who thrives at the intersection of product growth and deep learn

Work type: remote

Location: Remote - United States

Salary: $216,700 – $303,400/yr

Type: Full-time

Summary

This role is ideal for a seasoned Machine Learning Engineer with at least 5 years of experience who thrives at the intersection of product growth and deep learning. You should have a proven track record of deploying large-scale models (Tensorflow/PyTorch) and managing data pipelines. Because this role focuses on the "Core Experience," the team is looking for someone who isn't just a researcher, but a builder who can write production-quality Python or Go and navigate the ambiguity of a fast-paced product environment. The compensation is a major standout, with a base salary ranging from **$216,700 to $303,400**, plus equity and a 401k match. It offers exceptional flexibility as a **fully remote** position within the US or Canada. You'll gain high-level ownership of the "onboarding" experience for over 100 million users, giving your work massive immediate visibility and impact. **You might be a good fit if you:** * Have extensive experience with **recommender systems, LLMs, or personalization** at scale. * Enjoy collaborating directly with Product and Design to turn user problems into ML solutions. * Are comfortable "wearing many hats," from architectural design to mentoring junior engineers. * Value a culture that offers comprehensive benefits like gender-affirming care and family planning.

Job Description

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 121 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit [www.redditinc.com](http://www.redditinc.com/).

The Growth organization at Reddit connects users to their communities and creates engaging loops to encourage them to keep coming back. The team is a central part of our product and ensures that new users in our platform have a meaningful experience. We drive company-level impact and we push forward the cutting edge of engineering, using tools such as ML and LLMs, to drive sustainable user growth across our markets.

We are seeking a Senior Machine Learning Engineer to join the Growth team responsible for building users’ very first experiences on Reddit–the onboarding flow, first and early feeds, and notifications. This is a high impact role where you will own projects from ideation to production, working with our super-talented cross-functional team. You'll closely collaborate with product and design stakeholders, and be responsible for the engineering architecture and execution of key product features. You will also identify opportunities to use, configure, and deploy ML models and/or LLMs to create or improve product features. You will provide technical direction to junior engineers.

Fully remote within US or Canada

What You’ll Do:

• Use ML and/or LLMs to personalize first and early user experiences on Reddit.

• Build systems for real-time feature fetching and model inference.

• Build systems for recurring training of models using modern architectures (deep learning, transformers or other sequential models).

• Work closely with ML Platform teams to provide feedback on and improve Reddit’s ML infrastructure.

• Work with Product and Design partners to identify user problems, and design solutions to these problems using ML and/or LLMs.

• Contribute meaningfully to our team’s strategy. We give everyone a seat at the table and encourage active participation in planning our future. Don’t just come along for the ride.

• Participate in product reviews and team meetings, providing technical insight. Help scope, estimate, and prioritize between conflicting needs.

• Foster a healthy engineering culture and collaborate with other engineers.

• 5+ years of experience building deep learning models using mainstream ML frameworks (TensorFlow, PyTorch).

• 5+ years of experience training, evaluating, testing, and deploying industry-level models.

• 5+ years of experience orchestrating data generation pipelines on large-scale datasets.

• Successful track record of applying machine learning techniques to real-world problems.

• Fluent in data analysis and SQL.

• First-hand familiarity with AB testing using an experimentation platform.

• Excellent communication skills. You collaborate effectively with teams in a fully remote environment and discuss complex topics with technical and non-technical audiences.

• Experience writing production-quality software (preferred Python or Go).

• Experience with content recommendations and personalization is a plus.

• Passionate about building delightful products for users.

• Strong organizational skills, the ability to prioritize tasks and keep projects on schedule.

• 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.

• BS degree in Computer Science, a similar technical field of study or equivalent practical experience.

• 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

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