Senior Staff Machine Learning Engineer, GenAI Platform

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 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. Reddit has a flexible workforce! If you happen to live close to one of our physical office locations our doors are open for you to come into the office as often as you'd like. Don't live near one of our offices? No worries: You can apply to work remotely in any country in which we have a physical presence The Compute Platform team is seeking a Senior Software Engineer to work at the intersection of infrastructure and software development. As one of the world’s busiest websites, our platform is central to Reddit’s operations, focusing on high-level orchestration for multi-cloud deployments and intra-cluster challenges. You will build the APIs, controllers, and SDKs that automate the lifecycle of our global fleet, while simultaneously solving for performance, resource packing, and hardware management (including GPUs) across various cloud providers. We operate as a team of generalists; you will be expected to handle software development, system design, and operational support. Your work will directly impact hundreds of millions of users by improving the availability and efficiency of the foundational platform that runs all of Reddit. RESPONSIBILITIES: * Design and deliver software solutions in Go to improve the availability, scalability, and latency of Reddit’s compute infrastructure. * Develop Kubernetes controllers and operators to automate cluster management, workload scheduling, and the reconciliation of complex system states. * Build core tooling and SDKs that codify network configurations, managed services, and compute capacity tracking across a multi-region fleet. * Optimize intra-cluster performance by developing reactive schedulers and detecting node-level characteristics to inform availability. * Collaborate across the organization to provide technical feedback and automate critical development workflows and infrastructure operations. * Participate in an on-call rotation (approximately one week every 8-9 weeks) to ensure the stability of our global scale systems. REQUIRED QUALIFICATIONS: * 4+ years of experience developing internet-scale software with a heavy focus on infrastructure and distributed systems. * Proficient in Go with a proven track record of building and managing Kubernetes services at scale. * An expert in Linux internals, including a solid understanding of multi-tenancy primitives like cgroups and namespaces. * A contributor to the open-source community, ideally within the infrastructure or CNCF domain. * A self-starter capable of troubleshooting complex, cross-system issues and managing large projects independently. * An excellent communicator who thrives in a collaborative, service-oriented environment. 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: $190,800—$267,100 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.

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 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. The Core Platform team facilitates millions of API requests running the Core API Platform for Reddit. Core Platform is responsible for the APIs that build our listings, enabling posts, comments, media and many more features and data models that are the sources of truth for Reddit.  As a Senior Engineer on this team, you’ll be a technical coach and mentor. You’ll draw on your technical expertise to ensure these systems have high uptime and strong performance while working with others to build a roadmap to match the needs of an ever growing engineering organization. You’ll work with your teammates to build and scale a media platform which will fuel the next wave of Reddit’s growth. Your work will directly impact hundreds of millions of users around the world.  Join us and help build the future of Reddit! You will: * Develop and design new and innovative solutions to scaling Reddit * Build platform API projects that scale to the rest of the organization * Mentor and coach more junior engineers on your direct team to achieve our mission * Build, deliver, and operate services that scale to hundreds of thousands of transactions per second at 5+ 9’s of availability * Help us to optimize Reddit’s media experience for hundreds of millions of users across the world. You have: * Software development experience in Golang or Python * 5+ years of experience with large-scale, mission-critical distributed systems. * Excellent communication skills. You partner effectively with teams in a fully remote environment and discuss complex topics with technical and non-technical audiences. * Familiarity with API platform service architectures. * History of building clean, maintainable, and well-tested code. * Media delivery expertise from back end systems to the user.  Experience optimizing media performance, scalability, and delivery by improving different stages of the stack. 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: $190,800—$267,100 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.