{"id":194378,"date":"2026-03-02T18:59:01","date_gmt":"2026-03-02T18:59:01","guid":{"rendered":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/"},"modified":"2026-03-10T00:05:31","modified_gmt":"2026-03-10T00:05:31","slug":"eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california","status":"publish","type":"job_listing","link":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/","title":{"rendered":"Staff Machine Learning Scientist"},"content":{"rendered":"<h4><strong><a id=\"myCustomID\" href=\"https:\/\/www.harnham.com\/job\/EB8CDD1A-D1D1-4F13-3BD8-08D5DC096EA6\">To Apply for this Job Click Here<\/a><\/strong><\/h4>\n<p><strong>Staff Machine Learning Scientist <\/strong><\/p>\n<p><strong>Location:<\/strong> SF Bay Area &#8211; Hybrid (3 days\/week onsite)<\/p>\n<p><strong>Salary: <\/strong>$200-260k base + Equity<\/p>\n<\/p>\n<p>A leading commerce marketplace with 130M+ users and billions of daily events is hiring a Staff Machine Learning Scientist to drive innovation across personalization, feed ranking, computer vision, and GenAI. You&#8217;ll work on high-impact ML solutions that directly shape user experience and business outcomes at massive scale.<\/p>\n<p><strong> <\/strong><\/p>\n<p><strong>What You&#8217;ll Do<\/strong><\/p>\n<ul>\n<li>Lead full-lifecycle ML projects from idea to production across core areas like personalization, trust &amp; safety, marketing optimization, and user engagement.<\/li>\n<li>Own the ML development process-from data exploration and feature engineering to model training, deployment, and post-launch optimization.<\/li>\n<li>Collaborate cross-functionally with ML engineers, PMs, and business stakeholders to identify and prioritize high-leverage initiatives.<\/li>\n<li>Experiment with emerging AI techniques, including GenAI, computer vision, and LLMs, to push the boundaries of what&#8217;s possible on the platform.<\/li>\n<li>Build scalable, production-ready ML systems that enhance key metrics like retention, engagement, and conversion.<\/li>\n<\/ul>\n<p><strong>What You Bring<\/strong><\/p>\n<ul>\n<li>7-10 years of experience building, deploying, and maintaining ML models at scale.<\/li>\n<li>Deep expertise in Python, SQL, Spark (PySpark or Scala) and frameworks like PyTorch or TensorFlow.<\/li>\n<li>Proven track record in consumer tech or large-scale marketplaces companies.<\/li>\n<li>Hands-on experience with CNNs, Transformers, Vision Transformers, and personalization algorithms.<\/li>\n<li>Background in user behavior modeling, search relevance, or real-time data systems.<\/li>\n<li>Strong foundation in experimentation (A\/B testing), statistics, and applied ML.<\/li>\n<li>Exceptional communication skills and the ability to translate technical insights into business value.<\/li>\n<\/ul>\n<ul>\n<li>Experience with LLMs, RAG (Retrieval-Augmented Generation), or PEFT (Parameter-Efficient Fine-Tuning) techniques.<\/li>\n<\/ul>\n<p><img src=https:\/\/counter.adcourier.com\/am9zaHVhcG9vcmUuMTE5ODUuMTMxOTdAaGFybmhhbXNlYXJjaC5hcGxpdHJhay5jb20.gif><\/p>\n<h4><strong><a id=\"otherId\" href=\"https:\/\/www.harnham.com\/job\/EB8CDD1A-D1D1-4F13-3BD8-08D5DC096EA6\">To Apply for this Job Click Here<\/a><\/strong><\/h4>\n","protected":false},"author":0,"featured_media":0,"template":"","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"_promoted":"","_job_location":"San Francisco, California","_application":"","_company_name":"Harnham","_company_website":"https:\/\/www.harnham.com\/","_company_tagline":"","_company_twitter":"","_company_video":"","_filled":0,"_featured":0,"_remote_position":0,"_job_salary":"","_job_salary_currency":"","_job_salary_unit":""},"job-categories":[921],"job-types":[60],"class_list":{"0":"post-194378","1":"job_listing","2":"type-job_listing","3":"status-publish","4":"hentry","6":"job-type-permanent"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Staff Machine Learning Scientist San Francisco, California<\/title>\n<meta name=\"description\" content=\"Staff Machine Learning Scientist San Francisco, California\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Staff Machine Learning Scientist San Francisco, California\" \/>\n<meta property=\"og:description\" content=\"Staff Machine Learning Scientist San Francisco, California\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/\" \/>\n<meta property=\"og:site_name\" content=\"Harnham\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-10T00:05:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.harnham.com\/wp-content\/uploads\/2025\/02\/Harnham.gif\" \/>\n\t<meta property=\"og:image:width\" content=\"200\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Staff Machine Learning Scientist San Francisco, California\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Staff Machine Learning Scientist San Francisco, California","description":"Staff Machine Learning Scientist San Francisco, California","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/","og_locale":"en_US","og_type":"article","og_title":"Staff Machine Learning Scientist San Francisco, California","og_description":"Staff Machine Learning Scientist San Francisco, California","og_url":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/","og_site_name":"Harnham","article_modified_time":"2026-03-10T00:05:31+00:00","og_image":[{"width":200,"height":200,"url":"https:\/\/www.harnham.com\/wp-content\/uploads\/2025\/02\/Harnham.gif","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_title":"Staff Machine Learning Scientist San Francisco, California","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/","url":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/","name":"Staff Machine Learning Scientist San Francisco, California","isPartOf":{"@id":"https:\/\/www.harnham.com\/#website"},"datePublished":"2026-03-02T18:59:01+00:00","dateModified":"2026-03-10T00:05:31+00:00","description":"Staff Machine Learning Scientist San Francisco, California","breadcrumb":{"@id":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.harnham.com\/job\/eb8cdd1a-d1d1-4f13-3bd8-08d5dc096ea6-staff-machine-learning-scientist-san-francisco-california\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.harnham.com\/"},{"@type":"ListItem","position":2,"name":"Staff Machine Learning Scientist"}]},{"@type":"WebSite","@id":"https:\/\/www.harnham.com\/#website","url":"https:\/\/www.harnham.com\/","name":"Harnham","description":"","publisher":{"@id":"https:\/\/www.harnham.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.harnham.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.harnham.com\/#organization","name":"Harnham","url":"https:\/\/www.harnham.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.harnham.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.harnham.com\/wp-content\/uploads\/2023\/04\/harnham-squarelogo-1522068491765.png","contentUrl":"https:\/\/www.harnham.com\/wp-content\/uploads\/2023\/04\/harnham-squarelogo-1522068491765.png","width":200,"height":200,"caption":"Harnham"},"image":{"@id":"https:\/\/www.harnham.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/job-listings\/194378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/job-listings"}],"about":[{"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/types\/job_listing"}],"wp:attachment":[{"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/media?parent=194378"}],"wp:term":[{"taxonomy":"job_listing_category","embeddable":true,"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/job-categories?post=194378"},{"taxonomy":"job_listing_type","embeddable":true,"href":"https:\/\/www.harnham.com\/wp-json\/wp\/v2\/job-types?post=194378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}