Senior Machine Learning Systems Engineer, ML Platform

Reddit; Oregon; Hybrid; USD 217,000 - 303,000; Full time

Benefits offered by this job

Healthcare benefits

401k with employer match

Flexible vacation

Parental leave

Mental health & coaching

Job summary

Reddit is seeking a Senior Software Engineer, ML Platform, to join the ML Data Team and help architect, implement, and operate ML infrastructure powering Feeds Ranking, Content Understanding, and Recommendations.

You will build and maintain scalable data pipelines, governance tools, and production-grade systems with strong emphasis on reliability, testing, monitoring, and observability, collaborating closely with cross-functional partners.

Qualifications

• 5+ years in the ML Platform domain.
• Strong collaboration with cross-functional partners.
• Experience with large-scale batch and streaming data processing.
• Production-quality systems with testing and monitoring.

Responsibilities

• Lead design and operation of ML signal-governance capabilities.
• Build tools to assess signal importance and lifecycle decisions.
• Partner with MLEs to define governance workflows for signal metadata.
• Contribute to ML Data Platform including prediction logging and training data pipelines.
• Drive complex projects end-to-end from planning to rollout.

Skills

ML Platform

Distributed systems

Data pipelines

Observability

Cross-functional collaboration

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 130 million daily active unique visitors, Reddit is one of the internet's largest sources of information. For more information, visit

Who We Are:

The Machine Learning Platform team at Reddit is a high-impact team that owns the infrastructure that powers recommendations, content discovery, user and content quantification, while directly impacting other teams such as Growth, Ads, Feeds, and Core Machine Learning teams.

What You'll Do:

As a Senior Software Engineer, ML Platform, you will work on our ML Data Team and be instrumental in architecting, implementing, and maintaining foundational ML infrastructure powering Feeds Ranking, Content Understanding, Recommendations, Ads, and much more to fulfill Reddit's mission of bringing community and belonging to everyone in the world. You will create ML data-governance tools that help MLEs discover and reason about signals, while contributing across the broader ML data platform—including prediction logging and training data systems.

• Lead the design, development, testing, and operation of ML signal-governance capabilities that help MLEs discover signals and understand their ownership, lineage, quality, and usage.
• Build tools that help teams assess signal importance and make informed lifecycle decisions.
• Partner with MLEs and cross-functional teams to define governance workflows and deliver reliable, intuitive ways to explore and act on signal metadata.
• Contribute across the ML Data Platform, including prediction logging and training data platforms, to design, develop, test, and operate batch and streaming pipelines processing petabyte-scale data.
• Drive complex projects end to end from technical planning and design through implementation, testing, rollout, and ongoing operation.

Who You Might Be:

• 5+ years of experience in the ML Platform domain.
• Strong customer focus and experience driving projects from requirements to production in close collaboration with multiple cross-functional partners (XFN).
• Experience with large-scale batch and streaming data processing.
• Experience building production-quality systems with testing, monitoring, observability, and reliability practices.
• Deep understanding of distributed systems and data-intensive architectures, with strong communication and collaboration skills.

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-RemotePay 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.

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.

Pay Transparency:

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.

Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.