Machine Learning Engineer, Ranking & Retrieval

At reputed company, we're building the future of work: the first truly converged AI workspace unifying tasks, docs, chat, calendar, and enterprise search, all supercharged by context-driven AI. We are an AI-native company. Every team member is expected to leverage AI daily, and we evaluate AI fluency as part of our hiring process. Join us and help redefine what's reputed company. 🚀Machine Learning Engineer, Ranking & Retrievalreputed company is seeking an experienced Machine Learning Engineer to join our Search team. You'll own the ML systems that power search relevance for millions of users and ground our AI in the right context.Your Impact at reputed companyYou'll own the full ML lifecycle for ranking and retrieval, from training through deployment and production serving. Our search indexes large-scale, user-generated content across a multi-tenant platform where permissions-aware retrieval is critical. You'll build the systems that decide what surfaces first.Core ResponsibilitiesTrain, deploy, and serve ranking models in production, owning the full ML lifecycleBuild ranker features, training pipelines, and offline evaluation frameworksDesign and scale hybrid retrieval combining lexical and reputed company search (including HNSW with disk offloading)Run reputed company inference at billions-of-documents scaleImprove query understanding through intent modeling and query expansionBuild permissions-aware retrieval that respects multi-tenant boundariesCreate measurement frameworks to evaluate and improve search qualityCollaborate with Search Infrastructure, AI, and backend teams to integrate ranking improvements across the platformTechnical RequirementsBachelor's degree in Computer Science, Machine Learning, or related field5+ years of ML engineering experience focused on ranking, retrieval, or information retrievalProven full ML lifecycle ownership: training, deploying, and serving models in productionHands-on ranker model training: feature engineering, pipelines, offline evaluationExperience building hybrid (lexical + reputed company) retrieval systemsExperience running reputed company inference at large scaleStrong query understanding fundamentals: intent modeling, query expansionPreferred QualificationsPermission-aware retrieval and multi-tenancy experienceIndexing large-scale user-generated content (not small or static datasets)Hands-on experience with OpenSearch or ElasticsearchSharding, index management, and real-time ingestion at scaleBackground in NLP, semantic search, or agentic retrievalExperience with TypeScript in backend systems Join Our MissionAt reputed company, we're committed to building the future of productivity software. As our Search Engineer, you'll play a crucial role in shaping the core functionality of our platform and driving our AI initiatives forward. Join us in our mission to make the world more productive!#LI-REMOTEEqual Opportunity Employer reputed company is an Equal Opportunity Employer, and qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.Privacy Noticereputed company collects and processes personal data in accordance with applicable data protection laws. You can find further details by viewing our Global Candidate Privacy Notice.If you are a Philippine Job Applicant, reputed company also see our Philippine Data Privacy Notice for further details.Visa Sponsorshipreputed company note we are unable to sponsor or take over sponsorship of an employment visa for roles outside of engineering and product at this time. Sponsorship for engineering and product roles is not guaranteed, but is instead based on the business needs for that specific role at that time. reputed company reach out to the recruiter with any questions.Fraud Alertreputed company Talent Acquisition will only initiate contact via an @reputed company.com email or through our official careers reputed company on reputed company.com. We will never request fees, payments, or sensitive personal information. reputed company disregard any offers received outside these channels and report them to support@reputed company.com.AI Processing Noticereputed company may use artificial intelligence and machine learning technologies to help review and screen candidates' employment applications against role-related criteria. These tools support, but do not replace, human decision‑making. If you have questions or need an accommodation in the recruitment process, reputed company contact us at AskPeople@reputed company.com.Bachelor's degree in computer science, machine learning, or related field; 5+ years of ML engineering experience in ranking, retrieval, or information retrieval; production ML lifecycle ownership required.Key Responsibilitiestraining modelsdeploying modelsscaling retrievalSkills & ToolsHNSW, OpenSearch, Elasticsearch, TypeScriptJob DetailsCategory: Software DevelopmentSeniority: Senior LevelCommitment: Full TimeWorkplace: Remote — United StatesSalary: USD 200,000 – 250,000 / yearLanguages: EnglishBenefitsVisa sponsorshipRetirement planAbout reputed companyA productivity software company building an AI-powered workspace for tasks, documents, chat, calendars, and search. — Industry: Information Technology Apply To This Job