Job Description

Principal Machine Learning Engineer, Ads Measurement Remote - United States 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 101M+ daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit redditinc.com . The Ads Measurement Org is dedicated to enhancing the efficiency and user-friendliness of our advertising platform. We specialize in privacy enhancing technologies, identity resolution, and modeled conversions. We’re looking for a hands-on Principal Machine Learning Engineer with deep expertise in identity resolution and graph-based systems, who can lead end-to-end Ads initiatives across engineering and cross-functional teams. You will drive architectural decisions, mentor your peers, and dive into technical challenges directly when the team needs it. Our diverse group of engineers, product managers, data scientists, and ads specialists is excited to welcome you on board! Minimum Qualifications: 10+ years of professional software engineering experience, with at least 5+ years focused on ML-driven systems at scale Demonstrated experience architecting and building identity graphs, device graphs, or similar identity matching solutions leveraging probabilistic techniques Proficiency in machine learning frameworks (e.g., TensorFlow, PyTorch) and libraries for feature engineering, model training, and inference Solid understanding of large-scale data processing, distributed computing, and data infrastructure (e.g., Spark, Kafka, Beam, Flink) Proven technical leadership in cross-functional settings, driving architectural decisions and influencing stakeholders (product, data science, privacy, legal) Excellent communication, mentoring, and collaboration skills to align teams on a long-term vision for identity resolution Responsibilities: Lead the technical strategy and architecture for our company’s identity resolution system, ensuring accuracy, scalability, and compliance with privacy requirements Oversee end-to-end ML workflows—from data ingestion and feature engineering to model training, evaluation, and deployment—optimizing for performance and cost Partner with cross-functional teams (e.g., product management, data science, platform engineering, privacy, legal) to define the roadmap and set long-term goals Establish engineering best practices, code quality standards, and data governance guidelines to ensure maintainability and trustworthiness of the identity graph Mentor and coach junior engineers, fostering a culture of innovation, technical excellence, and knowledge sharing across the organization Comprehensive Healthcare Benefits and Income Replacement Programs 401k Match Family Planning Support Mental Health & Coaching Benefits Flexible Vacation & Reddit Global Days off Paid Volunteer time off 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 . To provide greater transparency to candidates, we share base pay 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 pay range for this position is:

$266,000 - $372,400 USD

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. Apply for this job * indicates a required field First Name * Last Name * Preferred First Name Email * Phone Resume/CV Enter manually Accepted file types: pdf, doc, docx, txt, rtf Enter manually Accepted file types: pdf, doc, docx, txt, rtf Website LinkedIn Profile How did you hear about this job? * Are you currently authorized to work in the U.S.? * Select... Do you now, or will you in the future, require immigration sponsorship to work at Reddit? * Select... By selecting "I agree," I understand that the information I have provided as part of this job application will be processed in accordance with Reddit's Candidate Privacy Policy. * Select... Please provide the name of your current (or most recent) company * Reddit U.S. Equal Employment Information Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. To bring community and belonging to everyone in the world, Reddit’s employees must represent communities and redditors on our platform. Our vision at Reddit is to have a workforce representative of people with different perspectives and experiences, including but not limited to, gender, race and ethnicity, sexual orientation, age, national origin, religion, and political views. We invite you to self-identify across the identities below so we can better understand our talent pools and assess our effectiveness in attracting and recruiting people to Reddit from all backgrounds. Answering these questions will not impact your application, nor will this information be shared with anyone making a hiring decision. For more information, please refer to our statement here . What gender identity do you most closely identify with? * Select... Are you a person of transgender experience? * Select... What sexual orientation do you most closely identify with? * Select... Do you live with a disability (as outlined by the ADA)? * Select... Are you a veteran/have you served in the military? * Select... Please select up to 2 ethnicities that you most closely identify with. * Select... #J-18808-Ljbffr Reddit, Inc.

Job Tags

Work experience placement, Remote job, Flexible hours,

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