[Remote] Staff Machine Learning Engineer, Consumer

Note: The job is a remote job and is open to candidates in USA. Reddit is a community-driven platform that facilitates open conversations online. They are seeking a Staff Machine Learning Engineer to lead high-impact machine learning initiatives, focusing on recommendations, search, and user engagement across their Consumer Engineering organization.ResponsibilitiesLead end-to-end ML initiatives from ideation through production and iteration, shaping technical direction and translating product goals into scalable solutionsArchitect, build and deploy large-scale ML systems across recommendation, search, and content/user understanding, including retrieval/ranking models, representation learnings embeddings optimizations, and LLM or GenAI-powered capabilitiesDrive measurable impact on user engagement, discovery, and long-term valueCollaborate with cross-functional teams to align product and technical roadmaps and unlock key future ML capabilitiesStay at the forefront of AI research, evaluating and introducing new AI/ML paradigms to keep Reddit’s ML ecosystem at the cutting edgeContribute to the development of best practices, guidelines, and ethical AI principles for responsible LLM development and deploymentMentor and guide senior and mid-level ML engineers, fostering a culture of excellence, innovation, and knowledge sharingSet technical vision and drive technical discussions, present findings to leadership, and contribute to long-term ML planning and decision-makingSkills7+ years of experience building, deploying, and operating machine learning systems in productionDeep understanding of machine learning methods, spanning classical approaches and modern deep learning (e.g., Transformers, GNN, etc)Expert at developing and productionizing models using TensorFlow, PyTorch, or Hugging Face TransformersExperience building production-quality code incorporating testing, evaluation, and monitoring using object-oriented programming, including experience in Python and GolangExperience designing and scaling ML systems, including data pipelines, feature engineering, model training/serving, and production monitoringExcellent communication and collaboration skills, with the ability to discuss complex technical topics with diverse teams and translating product needs into scalable ML solutionsTrack record of driving measurable impact through applied machine learning in real-world productsSubject matter expertise in one of the following domains: Recommender systems, Search systems (lexical and semantic retrieval and ranking), Content understanding (NLU/NLP/LLM, topic/taxonomy modeling, interest graphs or clustering, and multimodal understanding)Familiarity with distributed systems and large-scale data processing frameworks (Spark, Kafka, Ray, Airflow, BigQuery, Redis, etc.)Experience working with real-time systems and low-latency production environmentsExperience with LLM/GenAI techniques, including but not limited to LLM evaluation, alignment, fine-tuning, knowledge distillation, RAG/agentic systems and productionizing LLM-powered products at scaleStrong experimentation rigor, with experience formulating clear hypotheses, designing actionable learning plans and building offline/online correlationsAdvanced degree in Computer Science, Machine Learning, or related quantitative fieldBenefitsComprehensive Healthcare Benefits and Income Replacement Programs401k with Employer MatchGlobal Benefit programs that fit your lifestyle, from workspace to professional development to caregiving supportFamily Planning SupportGender-Affirming CareMental Health & Coaching BenefitsFlexible Vacation & Paid Volunteer Time OffGenerous Paid Parental LeaveEquity in the form of restricted stock unitsCommission (depending on the position offered)Medical, dental, and vision insurance401(k) program with employer matchGenerous time off for vacationParental leaveCompany OverviewReddit is the heart of the internet, where millions of people get together to talk about any topic imaginable. It was founded in 2005, and is headquartered in San Francisco, California, USA, with a workforce of 1001-5000 employees. Its website is https://www.redditinc.com.Company H1B SponsorshipReddit, Inc. has a track record of offering H1B sponsorships, with 22 in 2026, 99 in 2025, 63 in 2024, 76 in 2023, 70 in 2022, 68 in 2021, 39 in 2020. Please note that this does not guarantee sponsorship for this specific role.