AI research scientist WriterAI research scientistSan Francisco, CaliforniaThe instincts and orientation that match WRITER's values: you Connect — you collaborate openly across research, engineering, and product and communicate complex ideas with clarity to both technical and non-technical audiences; you Challenge — you ask the hard questions, push back on conventional wisdom, and pursue the research directions others haven't tried yet; you Own — you drive your projects end-to-end with urgency, take accountability for results, and care deeply about the impact your work has on real customers. Founded in 2020 with office hubs in San Francisco, New York City, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.
Research Scientist - Post-training / RL Epsilon LabsResearch Scientist - Post-training / RLSan Francisco, CaliforniaExtend reinforcement learning to unverifiable and noisy objectives such as report quality and clinical usefulness, using learned reward models and radiologist feedback pipelines ( RLHF ) built on expert preferences and report edits. This role owns every stage after pretraining: supervised fine-tuning, reward modeling, reinforcement learning against verifiable and learned reward signals, reasoning and tool-use training, and inference-time strategy.
AI Research Scientist WriterAI Research ScientistSan Francisco, CAThe instincts and orientation that match WRITER's values: you Connect - you collaborate openly across research, engineering, and product and communicate complex ideas with clarity to both technical and non-technical audiences; you Challenge - you ask the hard questions, push back on conventional wisdom, and pursue the research directions others haven't tried yet; you Own - you drive your projects end-to-end with urgency, take accountability for results, and care deeply about the impact your work has on real customers. Founded in 2020 with office hubs in San Francisco, New York City, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.
Research Scientist - VLM Pretraining Epsilon LabsResearch Scientist - VLM PretrainingSan Francisco, CaliforniaThis role owns the pretraining stage of our radiology report generation model: VLM architecture design, multimodal data and task mixtures, and the large-scale training runs that build grounded visual understanding across X-rays, CT scans, and MRI. You'll work with one of the largest and most diverse medical imaging datasets in the industry, paired with the reports that make multimodal pretraining at this scale possible, while maintaining the clinical rigor required for healthcare deployment.
Research Scientist GoodfireResearch ScientistSan Francisco, California$200,000–$400,000 / yearTreating models as black boxes is an unnecessary handicap—we have access to the structures inside them, and understanding those structures lets us steer what models learn, make them safer and more useful, and extract the vast knowledge they contain. Most importantly, you'll have the opportunity to join a vital mission at an important point in its trajectory — we are developing groundbreaking technology with a world-class team on the critical path to ensuring a safe and beneficial future for humanity.
Research Scientist, Life Sciences AnthropicResearch Scientist, Life SciencesSan Francisco, CAThis research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences. Build and ship agentic tools and integrations that let Claude execute real life science workflows - bioinformatics pipelines, database queries, analysis notebooks, literature review.
Research Scientist, Life Sciences (Chemistry) AnthropicResearch Scientist, Life Sciences (Chemistry)San Francisco, CAThis research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences. Working alongside AI researchers and engineers, you'll drive experimental programs end to end and pressure-test AI-designed molecules and AI-proposed synthetic routes against real chemistry.
Machine Learning Research Scientist AutoscienceMachine Learning Research ScientistMenlo Park, CaliforniaSystems : Experience building scalable and production-ready machine learning pipelines or large-scale model training (distributed model training over >64 GPUs). Research : Publishing in top-tier AI/ML conferences (e.g., NeurIPS, ICML, ICLR, etc) or equivalent industry experience at corporate AI research labs (Microsoft, Google, Nvidia, TRI etc).
Member of Technical Staff - Clinical AI Research Scientist Kinetic SystemsMember of Technical Staff - Clinical AI Research ScientistSan Francisco, CaliforniaYou'll help build novel datasets, environments, and benchmarks to identify capability gaps in current models, publish academic papers, and post-train models to push the SOTA while staying grounded to the demonstrated needs of our healthcare partners. Our mission is to advance the capabilities of frontier models for solving clinically and economically meaningful healthcare tasks.
AI Research Scientist Cogent SecurityAI Research ScientistSan Francisco, CaliforniaProven Track Record: Demonstrated impact through publications at top-tier conferences, significant artifacts developed in a professional setting, or widely-adopted open-source contributions. Alongside our core product work, Cogent Research serves as our applied AI lab, providing the research horsepower needed to make truly agentic security workflows a reality.
Research Scientist Eleos AI ResearchResearch ScientistBerkeley, CaliforniaYou will work at the intersection of machine learning, cognitive science, and philosophy of mind, doing original, rigorous research to guide and inform decision-makers at frontier AI companies, policymakers, and the public. We’re open to a wide variety of seniority levels for this role, with annual salary dependent on level ($201,634 to $428,982).
Research Scientist - Computational Neuroscience Astera InstituteResearch Scientist - Computational NeuroscienceEmeryville, CaliforniaUnlike traditional non-profit research organizations, projects supported by Astera operate like high-velocity startups, allowing us to focus on ambitious goals, match structure to problem, and attract strong technical talent and leadership. We believe the coming years will bring an era of unprecedented scientific and technological advancement as exponential progress in AI converges with central advances in other fields to dramatically accelerate innovation.
NewMTS - Research Scientist Ironsite AIMTS - Research ScientistSan Francisco, CaliforniaIronsite is backed by leading investors (8VC, South Park Commons, Saga Ventures) and prominent operators across technology and construction, including Eric Schmidt, Jeff Dean, Jeff Rothschild, Mark Leslie, Scott Wu, Eric Glyman, Karim Atiyeh, Russell Kaplan, and others, alongside over a dozen construction industry operators who have joined us as partners in building this. We are accelerating the speed, efficiency, and predictability of construction, especially for complex, mission-critical infrastructure projects, including data centers, LNG facilities, sports stadiums, hospitals, and other large-scale developments, by training AI models on egocentric construction footage and labor productivity data.
Research Scientist (Generative Modeling) World LabsResearch Scientist (Generative Modeling)San Francisco, CaliforniaYou will collaborate closely with researchers, engineers, and product teams to bring advanced 3D modeling and machine learning techniques into real-world applications, ensuring that our technology remains at the forefront of visual innovation. The company’s flagship product, Marble , transforms text, images, and video into fully navigable 3D worlds, unlocking applications across gaming, film, architecture, robotics, and immersive digital experiences.
Junior Research Scientist EliseAIJunior Research ScientistSan Francisco, CaliforniaAs a junior research scientist at EliseAI, you will join a fast-moving team of world-class researchers engaged in groundbreaking research on machine learning and large language models, developing predictive models to advance our AI capabilities, and much more. Apply advanced mathematical and machine learning techniques to solve specific problems such as optimizing tenant engagement strategies, predicting tenant behavior, and improving customer interaction processes.
Senior Machine Learning Engineer (Research Scientist) - Data Foundation & AI PlaidSenior Machine Learning Engineer (Research Scientist) - Data Foundation & AISan Francisco, CaliforniaWe work with thousands of companies like Venmo, SoFi, several of the Fortune 500, and many of the largest banks to make it easy for people to connect their financial accounts to the apps and services they want to use. They are responsible for the full lifecycle of these systems, including pretraining data curation, model development and training, as well as production deployment, serving, and ongoing monitoring.
Research Scientist - World Model LumaResearch Scientist - World ModelRedwood City, CaliforniaLuma already trains the strongest generative video models in the industry; the next step is turning those models into world models — interactive, controllable, physically faithful, and useful as a substrate for embodied reasoning. WHAT YOU'LL DO - Invent next-generation world model architectures — diffusion, transformer, autoregressive, or hybrid — with a particular focus on controllability and physical consistency.
Applied Research Scientist - Foundation Models Ambient.aiApplied Research Scientist - Foundation ModelsRedwood City, CaliforniaPowered by Ambient Pulsar, the first reasoning Vision-Language Model purpose-built for physical security, our platform seamlessly integrates with existing security cameras and physical access control systems to unify monitoring, access control, threat assessment, response, and investigations through an always-on reasoning layer that augments security operators with superhuman capabilities. The momentum speaks for itself: we doubled new ARR in FY26, we process 200M+ video hours per day, and have delivered results for world-class customers including Cisco, ServiceNow, SentinelOne, TikTok, Bayer, and MoMA.
Senior Ai Research Scientist workatoSenior Ai Research ScientistSan Francisco, CAStrong publication record in top-tier ML venues (NeurIPS, ICML, ICLR) or demonstrable impactful experimental work; hands‑on experience with large‑scale model training, transformer architectures, reinforcement‑learning techniques, and CUDA. Workato delivers enterprise infrastructure for the agentic era, redefining iPaaS and helping enterprises unify data, applications, processes, and AI into a single, governed platform.
Research Scientist, Thin Films Periodic LabsResearch Scientist, Thin FilmsMenlo Park, CaliforniaStrong skills in structural and chemical characterization, particularly of thin films and materials with structures or compositions never before realized experimentally — including diffraction, microscopy, and spectroscopy. Strong track record of highly impactful research demonstrated by publications in top-tier journals and/or inventions, and recognized leadership in the field.