{"schemaVersion":"jobsearcher.job.v1","id":"4d54bed61b84be394e07b53c","url":"https://jobsearcher.com/jobs/4d54bed61b84be394e07b53c","canonicalUrl":"https://jobsearcher.com/jobs/4d54bed61b84be394e07b53c","title":"Lead Machine Learning Engineer","description":"We’re partnered with a well-funded early-stage startup rethinking how designers build in the AI era, backed by top-tier investors and operators from leading AI and technology companies. They’re building a next-generation design platform powered by LLMs, focused on helping product teams move from idea to production faster through intelligent, AI-driven workflows.\r\nThis is a foundational, high-ownership role where you’ll define and scale AI systems across the product. You’ll operate at the intersection of models, systems, and product, turning cutting-edge AI capabilities into reliable, measurable user-facing features.\r\nWhat You’ll Do Own AI architecture and technical direction across the product\r\nBuild and ship production-grade LLM features with clear quality and performance metrics\r\nDesign and optimize AI pipelines across prompting, retrieval, agents, and evaluation\r\nLead development of agentic systems and multi-step tool use workflows\r\nEstablish standards for model evaluation, benchmarking, and observability\r\nPartner closely with product, design, and engineering to ship high-impact AI features\r\nRequirements 5+ years of software engineering experience\r\n2+ years working with LLM APIs and prompt engineering in production\r\nStrong proficiency in TypeScript or Node.js and Python\r\nExperience with LLM evaluation, benchmarking, and performance measurement\r\nHands-on experience with fine-tuning (LoRA, full fine-tuning, distillation)\r\nExperience building agent-based AI systems\r\nAbility to own systems end-to-end in a fast-paced environment\r\nWhat You’ll Build Custom smaller models tailored to specific design workflows\r\nMulti-step AI agent systems with tool use\r\nReal-time, streaming AI experiences\r\nContext-aware code generation and intelligent suggestions\r\nIf you're interested in building AI-native products that directly shape how modern teams design and build software, this is a rare chance to have early, meaningful impact on both the product and technical direction.#J-18808-Ljbffr","company":"Harnham","rawCompany":"harnham","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-10-04T02:52:13.616Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1221.00","title":"Computer and Information Research Scientists","slug":"computer-and-information-research-scientists"},{"code":"15-2051.00","title":"Data Scientists","slug":"data-scientists"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Lead Machine Learning Engineer","description":"We’re partnered with a well-funded early-stage startup rethinking how designers build in the AI era, backed by top-tier investors and operators from leading AI and technology companies. They’re building a next-generation design platform powered by LLMs, focused on helping product teams move from idea to production faster through intelligent, AI-driven workflows.\r\nThis is a foundational, high-ownership role where you’ll define and scale AI systems across the product. You’ll operate at the intersection of models, systems, and product, turning cutting-edge AI capabilities into reliable, measurable user-facing features.\r\nWhat You’ll Do Own AI architecture and technical direction across the product\r\nBuild and ship production-grade LLM features with clear quality and performance metrics\r\nDesign and optimize AI pipelines across prompting, retrieval, agents, and evaluation\r\nLead development of agentic systems and multi-step tool use workflows\r\nEstablish standards for model evaluation, benchmarking, and observability\r\nPartner closely with product, design, and engineering to ship high-impact AI features\r\nRequirements 5+ years of software engineering experience\r\n2+ years working with LLM APIs and prompt engineering in production\r\nStrong proficiency in TypeScript or Node.js and Python\r\nExperience with LLM evaluation, benchmarking, and performance measurement\r\nHands-on experience with fine-tuning (LoRA, full fine-tuning, distillation)\r\nExperience building agent-based AI systems\r\nAbility to own systems end-to-end in a fast-paced environment\r\nWhat You’ll Build Custom smaller models tailored to specific design workflows\r\nMulti-step AI agent systems with tool use\r\nReal-time, streaming AI experiences\r\nContext-aware code generation and intelligent suggestions\r\nIf you're interested in building AI-native products that directly shape how modern teams design and build software, this is a rare chance to have early, meaningful impact on both the product and technical direction.#J-18808-Ljbffr","datePosted":"2026-10-04T02:52:13.616Z","dateModified":"2026-10-04T02:52:13.616Z","hiringOrganization":{"@type":"Organization","name":"Harnham","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"4d54bed61b84be394e07b53c"},"url":"https://jobsearcher.com/jobs/4d54bed61b84be394e07b53c"}}