• Poesis (San Francisco, CA)
    A pioneering hedge fund in San Francisco is seeking a Founding ML Engineer to architect and build machine learning systems for investment decisions. This ... hands-on role requires 5-10+ years of experience and proficiency in Python and ML frameworks like PyTorch and TensorFlow. The position offers a hybrid work style and… more
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  • Datawizz (San Francisco, CA)
    A tech startup focused on efficient AI is seeking a founding ML engineer to design the core intelligence layer of their platform in San Francisco. This role ... routing, and production systems. Candidates should have experience in training ML models, building evaluation frameworks, and deploying in cloud environments.… more
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  • Datawizz (San Francisco, CA)
    …- significantly reducing costs and improving accuracy. The Role As a founding ML engineer , you'll build the core intelligence layer of our platform. ... opportunities for publishable research alongside product work. You will: Design and build our model evaluation framework for measuring accuracy, latency, and cost… more
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  • Recruiting From Scratch (San Francisco, CA)
    An innovative startup is seeking a talented Applied Machine Learning Engineer to revolutionize the audio AI landscape. In this role, you'll design and implement ... audio applications. Collaborate with a dynamic team of engineers and researchers to build scalable systems and influence the future of voice technology. This is a… more
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  • Recruiting From Scratch (San Francisco, CA)
    …learning and signal processing solutions focused on speech and audio applications. Build production-grade ML inference pipelines and APIs, collaborating closely ... the best candidate for our clients. Applied Machine Learning Engineer - Audio AI Location: San Francisco, CA or...the world of audio AI. Their mission is to build best-in-class infrastructure and models for collecting and training… more
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  • Reactor (San Francisco, CA)
    We're looking for a Founding Infrastructure Engineer with deep expertise in building and scaling cloud-native systems. This is a highly technical, high-impact ... next 1, 2, and 5 years. We want to build a world‑class infrastructure platform for serving AI at...across performance, reliability, and cost. * Partner closely with ML engineers to productionize and optimize model serving pipelines.… more
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  • Poesis (San Francisco, CA)
    …hedge fund focused on reshaping how trading decisions are made. We're hiring our Founding ML Engineer , the first full-time machine learning hire who ... will turn research and data into production models. You'll build the first ML pipelines end-to-end -...decision‑makers. Required Competencies 5-10+ years of experience as an ML Engineer , Quant Engineer , or… more
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  • Fabrion (San Francisco, CA)
    About the Role ML Ops Engineer - Agentic AI Lab ( Founding Team) - Location: San Francisco Bay Area - Type: Full-Time - Compensation: Competitive salary + ... retrieval-augmented generation (RAG), and knowledge-graph-grounded models. We're hiring an ML Ops Engineer to be the glue...startups or autonomous roles, prior experience as a founder, founding engineer , or a 0-1 pre-seed startup… more
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  • Fabrion (San Francisco, CA)
    ML /AI Research Engineer - Agentic AI Lab ( Founding Team) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful ... equity ( founding tier) Backed by 8VC, we're building a world‑class...knowledge graphs, and multi‑tenant governance. We're looking for an ML /AI Research Engineer to join our AI… more
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  • MLabs (San Francisco, CA)
    …to lead the charge on our core AI systems. The Role As a Founding AI Engineer , you will build and scale the systems that power our automated event planning ... Founding AI Engineer Location: San Francisco,...seamless, AI-driven experiences. What You'll Do: Develop Autonomous Agents: Build and scale AI agents for automated communication (email/voice),… more
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  • Reducto (San Francisco, CA)
    …investors like A16z, Benchmark, and First Round Capital, and are hiring a founding Infrastructure Engineer . The Opportunity As the first dedicated Infrastructure ... way a human would, and make it possible to build products, train models, and automate processes at scale....will architect and scale resilient systems for AI and ML workloads, automate cloud infrastructure, and implement monitoring and… more
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  • Reducto (San Francisco, CA)
    …world class investors like A16z, Benchmark, and First Round Capital, and are hiring a Founding Forward Deployed Engineer who can help us capitalize on our early ... way a human would, and make it possible to build products, train models, and automate processes at scale....momentum. The Opportunity As our founding Forward Deployed Engineer at Reducto, you'll… more
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  • Falconer (San Francisco, CA)
    A technology startup in San Francisco is seeking a Founding AI Engineer to develop an AI-powered knowledge platform. You will participate in product development ... have an advanced degree in related fields and 2+ years of experience in ML . The role offers a generous equity package, competitive salary, and flexible work… more
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  • Unusual Ventures (San Francisco, CA)
    …from industry leaders at Google, Ramp, Atlassian, and PubMatic. Role Description As a Founding Engineer , you'll help shape both our product and our company. ... this problem. We're former engineers, tech product managers, and ML researchers with deep expertise in voice AI, SaaS,...infrastructure to handle tens of millions of calls, and build out critical user flows for our customer-facing product… more
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  • Together For Talent (San Francisco, CA)
    …an industry most people take for granted. What's In It For You Be the founding engineer shaping a next‑generation AI platform from the ground up. Work ... Founding Software Engineer | AI for... Founding Software Engineer | AI for Supply Chain Automation Location:...ML systems Startup experience or a desire to build something from zero to one If you're excited… more
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  • Onton (San Francisco, CA)
    …which is just the beginning. You have the opportunity to: Join Onton as a Founding Engineer and set the strategic foundation for our Engineering Team Design, ... tackling cutting-edge problems to create a seamless, cohesive experience for users. Build across every layer of the stack - web app, container, infrastructure,… more
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  • Reducto, Inc. (San Francisco, CA)
    …investors such as A16z, Benchmark, and First Round Capital, and are hiring a Founding Forward Deployed Engineer who can help us capitalize on our early ... way a human would, and make it possible to build products, train models, and automate processes at scale....momentum. The Opportunity As our founding Forward Deployed Engineer at Reducto, you'll… more
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  • Weekday AI (San Francisco, CA)
    …and more, we've raised over $5M to bring this vision to life. About the Role - Founding Full-Stack Engineer As a Founding Full-Stack Engineer , you'll be ... required, but O-1 visa sponsorship is possible for exceptional candidates. What You'll Do Build an AI-powered paywall editor used by millions of users daily - from… more
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  • Fabrion (San Francisco, CA)
    DevOps Engineer ( Founding Team) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful equity ( founding tier) Backed ... ensuring traceability across AI systems , and supporting mission-critical ML infrastructure at scale. We're looking for a DevOps... infrastructure at scale. We're looking for a DevOps engineer who can own infrastructure from Day 1 -… more
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  • Motion Recruitment Partners LLC (San Francisco, CA)
    Founding Engineer - AI Startup (San Francisco, In-Office) An early-stage, venture-backed AI startup in San Francisco is hiring its first Founding Engineer ... . This is a ground-floor opportunity to shape the technical direction, build core systems from scratch, and influence product, culture, and engineering best… more
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