OptiTalent · Job Finder
Science jobs in California, United States
886 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
Science jobs in California at a glance
- Open roles
- 886
- Remote
- 7%
- Posted in the last 30 days
- 235
- Advertised pay, middle half
- $126K – $300Kmedian $190K
From the 708 science jobs here that state yearly pay in USD: the top of each advertised range. Updated nightly.
Hiring most here
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621–640 of 886 jobs
Anthropic · San Francisco, California, United States
On-site$300K – $320K a yearScience & researchAnthropic's Life Sciences team is building a world-class research group focused on making fundamental biological discoveries. The team combines cutting-edge AI with hands-on biological research, positioning Anthropic at the forefront of AI-accelerated scientific discovery.
Phylo, Inc. · South San Francisco, California, United States
On-siteFull-timeLead / staff$170K – $275K a yearScience & researchOur Scientific Solutions team is where our science meets our customers. We're hiring forward deployed scientists with industry experience to partner closely with our enterprise customers, raise the scientific bar of our agents, and make sure outputs hold up under real…
Member of Technical Staff, Applied Research
4 months agoLlamaIndex · San Francisco, California, United States
HybridFull-timeLead / staff$180K – $250K a yearScience & researchWe are looking for an AI Research Engineer to join our document understanding team.
Member of Technical Staff, Research
4 months agoAbundant · San Francisco, California, United States
On-siteFull-timeLead / staff$250K – $450K a yearScience & researchYou will own a research agenda where research meets production, co-designing strategies with researchers from frontier AI labs. You are the “PM of the model”: you pick the problem, design the data and reward signal that moves it, and see it through to a live training run. The…
Research Associate (RL Environments)
4 months agoAnthrogen · San Francisco, California, United States
On-siteFull-timeEntry level$100K – $150K a yearScience & researchAs a Research Associate, you'll run molecular biology protocols on our robotic platforms and, in doing so, generate the demonstration data we use to train policies for autonomous experimentation. You're not just doing the science — you're teaching our robots to do it. Every…
Research Engineers, Post-Training
4 months agoDistyl AI · San Francisco, California, United States +1
HybridFull-time$150K – $250K a yearScience & researchDesign and run post-training workflows that improve the behavior, reliability, and usefulness of AI systems; Develop datasets, preference signals, evaluation suites, reward models, fine-tuning workflows, and feedback loops for applied AI use cases; Investigate how different…
Research Engineers, Agents
4 months agoDistyl AI · San Francisco, California, United States +1
HybridFull-time$150K – $250K a yearScience & researchDesign, prototype, and implement agentic AI systems that perform reliably across complex enterprise workflows; Build compound AI architectures that combine planning, tool use, retrieval, memory, evaluation, orchestration, and execution; Investigate how agents reason,…
California State University · Los Angeles, California, United States
ContractEntry level$3,408.00 – $6,072.00 a monthScience & researchThe Department of Biological Sciences seeks graduate students as applicants for Graduate Assistant. This position provides an opportunity to gain valuable experience in instructional support, and academic program operations while pursuing graduate studies at Cal State LA.…
Mantle Squad US – Ecosystem Researcher
4 months agoWindranger Labs · San Francisco, California, United States
Part-timeMid levelScience & researchMantle is expanding its presence across the Americas and is seeking a high-signal ecosystem operator to help grow brand presence, community engagement, and offline traction. This part-time role (15–20 hours/week) is designed for individuals deeply embedded in either the…
Sr Scientist - Analytical Development
4 months agoTarsus Pharmaceuticals · Irvine, California, United States
HybridSenior$120K – $168K a yearScience & researchThe Sr. Scientist, Analytical Development is responsible for leading analytical activities supporting clinical-stage drug substance and drug product development programs. This role provides phase-appropriate analytical development, validation, and analytical CMC regulatory…
Modal · New York, United States +1
Full-timeLead / staff$150K – $350K a yearScience & researchWe’re building a platform that covers the whole life of an LLM: training it, deploying it, and observing it in production. We already run multi-node training, elastic inference, sandboxes, and distributed volumes, and we control the infrastructure underneath. We’re looking for…
Member of Technical Staff - Research, Inference
4 months agoModal · New York, United States +1
Full-timeLead / staff$150K – $350K a yearScience & researchMost of the value of owning a model shows up at serving time. We’re building a platform that covers the whole life of an LLM (train it, deploy it, observe it), and inference is where teams feel the difference every day. We already run elastic inference, sandboxes, distributed…
Member of Technical Staff - Research
4 months agoArmadin · Palo Alto, California, United States
On-siteFull-timeLead / staffScience & researchOwn Post-Training Strategy: Drive the post-training roadmap (fine-tuning, preference optimization, reward modeling, RL, distillation) to make models more capable, reliable, and aligned.; Push Efficiency & Evals: Make models serve reliably at scale, and build the benchmarks that…
AI Agent Researcher
4 months agoVast.ai · San Francisco, California, United States +1
On-siteFull-time$160K – $320K a yearScience & researchAs an Agent Research Engineer, you will help advance the highest levels of the tech stack to imbue AI systems with true agency. Collaborating directly with our technical founder and diverse team, we will build the next generation of general learning agents. Possessing and…
Research Scientist – Large Tabular Models (LTMs)
4 months agoGranica · San Francisco, California, United States
On-siteFull-time$160K – $240K a yearScience & researchMost of today's generative AI is built for text, images, and video.
Evaluations - Member of Technical Staff
4 months agoSimile · San Francisco, California, United States +1
On-siteFull-timeLead / staff$200K – $400K a yearScience & researchPilots don't train with real passengers. Actors don't rehearse with real audiences. Yet, the most consequential decisions in society are often pushed straight to production.
Vaxcyte · San Carlos, California, United States
On-siteMid level$146K – $171K a yearScience & researchVaxcyte is seeking a curious and scientifically rigorous Scientist II to join the Upstream Process Development group within the Protein Development and CMC organization. The successful candidate's primary responsibility will be to design and execute experimental programs that…
Senior Scientist, RNA Delivery
4 months agoConception · Berkeley, California, United States
Full-timeSeniorScience & researchWe are seeking a highly creative, rigorous, and hands-on Scientist with deep expertise in RNA delivery to help optimize and enhance Conception’s differentiation platform.
Research Scientist
4 months agoResolution · Berkeley, California, United States +1
HybridFull-time$141K – $930K a yearScience & researchWe are hiring Research Scientists across our research programs. The team you'd join depends on your strengths and interests. In your application, indicate which program(s) you'd be most interested in.
Member of Technical Staff - Research
4 months agoVals AI · San Francisco, California, United States
On-siteFull-timeLead / staff$130K – $185K a yearScience & researchWe are looking for exceptional researchers and research engineers to design and build the next generation of AI benchmarks. You will create high-impact, challenging evaluations that push the boundaries of what we can measure in foundation models. This role is ideal for someone…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.