39 behavioral researcher jobs at 24 companies in Pacifica, CA
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Researcher, Alignment CoT Monitorability
San Francisco, California, United States
$250k-$445k/yr HybridFull Time
Strong empirical ML experience training/evaluating large models (especially LLMs), ability to design and run experiments, build evaluations, analyze model behavior, and collaborate across research and engineering teams. Hybrid SF role; relocation assistance available.
4w
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Senior Behavioral Scientist
Austin or San Francisco or Chicago or New York City or Arlington
$166k-$230k/yr HybridFull Time
PhD in behavioral or organizational science, expertise in measurement, advanced analytics, executive communication, and applied behavioral science; experience with quantitative and qualitative data and business-facing research.
1w
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Student Researcher (LLM Post Training – Agent & Reinforcement Learning) - 2026 Start (PhD)
San Jose, California, United States
OnsiteInternship
Pursuing a PhD in CS/AI, research experience in reinforcement learning or agent behavior, first-author ML conference publications, and strong programming/experimentation skills with RL/LLM frameworks.
LLM, RL, WebArena, ALFWorld
1mo
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Staff UX Researcher, Personalization
San Francisco or Helsinki
$198k-$233k/yr HybridFull Time
8+ years UX/design research experience; skilled in qualitative and quantitative methods, experiment design (A/B testing), behavioral data interpretation, AI/LLM feature research, and influencing product decisions.
3w
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Design Physics - Postdoctoral Researcher
Livermore, California, United States
$136k/yr HybridFull Time
PhD in physical science or related field, U.S. citizenship and ability to obtain DOE Q clearance, expertise in computational or experimental physics related to dynamic material behavior, strong simulation and data analysis skills.
2w
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Assistant Professor in Animal Behavior or Behavioral Ecology
Santa Clara, California, United States
$105k-$117k/yr OnsiteFull Time
1+ YOEPh.D. in animal behavior/behavioral ecology or related field (completed at application), ≥12 months postdoctoral experience, evidence of research and undergraduate mentorship, and effective inclusive teaching.
4w
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Behavioral & Social Sciences Librarian - Library
Berkeley, California, United States
$83k-$109k/yr OnsiteFull Time
Advanced degree required; experience with academic library instruction, social science research methods, evidence synthesis, and data discovery; strong communication and analytical skills.
3mo
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Associates and Consultants (Behavioral Science)
Boston or New York or San Francisco or Seattle or Washington DC
$110k-$176k/yr HybridFull Time
Bachelor's in economics/behavioral economics/psychology/cognitive science/marketing/statistics/data science/public policy; target GPA 3.6+; graduate degree a plus; experience in consulting, academic research, or market research; experimental design or survey methods experience.
Python, R, Stata
1mo
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Research Engineer
San Francisco, California, United States
$200k-$350k/yr OnsiteFull Time
Experience building production AI systems, evals, model adaptation, and applied research engineering to improve agent behavior in real-world conditions.
Slack, Teams, DSPy, GEPA, LoRA, QLoRA, SFT, distillation, DPO, GRPO
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Clinical Research Scientist, Mental Health AI
San Francisco, California, United States
$140k-$185k/yr OnsiteFull Time
PhD/PsyD/MD or equivalent research experience in clinical/behavioral fields, track record publishing and leading studies, expertise in study design, psychometrics, human-subjects research, and strong communication skills.
Python, Django, React, AWS, CDK
6d
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Life Science Research Professional 1
Stanford, California, United States
$60k-$111k/hr OnsiteFull Time, Temporary
Bachelor's degree in a related scientific field; scientific research, rodent handling, behavioral testing, computer, analytical, organizational, and detailed recordkeeping skills required.
Ethovision, Activity Chamber Open Field, Gemini avoidance system, Conditional Place Preference, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, GraphPad Prism, Polymerase Chain Reaction, Western Blot, Immunohistochemistry
3mo
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Founding Research Scientist, Human Simulation
San Francisco, California, United States
OnsiteFull Time
Strong research track record in AI, LLMs, post-training, RLHF, behavioral modeling, or simulation. Founding role; ability to define problems, scope programs, and communicate clearly.
Machine Learning, Natural Language Processing, RLHF, Evaluation, Simulation
2mo
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Member of Technical Staff, Research Engineer
San Francisco, California, United States
OnsiteFull Time
Experienced research engineer with strong implementation ability; background in RL, LLM agents, evals, simulation, model behavior analysis, and building end-to-end systems for curriculum and task generation.
RL, LLM, evals
1w
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Member of Technical Staff, Frontier Evals
San Francisco, California, United States
OnsiteFull Time
Strong STEM background, deep curiosity about frontier AI models, experience designing evaluations, running experiments, and analyzing model behavior; ability to publish research and technical reports.
1mo
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Senior Research Scientist, Human‑AI Perception and Interaction
Santa Clara, California, United States
$192k-$357k/yr OnsiteFull Time
3+ YOEPhD or equivalent,3+ years relevant experience,strong publication record,experience studying human behavior,proficiency in Python/Rust/C++ and PyTorch.
Python, Rust, C++, PyTorch
2w
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Principal Research Scientist, Robotics
Mountain View, California, United States
$235k-$366k/yr OnsiteFull Time
Samsung Research America: A research organization advancing robotics and artificial intelligence through applied R&D and collaboration.
11+ YOEPhD in CS/EE/Robotics or equivalent, 11+ years post-grad robotics R&D, strong publication record, experience with robotics, ML, planning, computer vision, and implementing behaviors on real robots.
PyTorch, TensorFlow, C++, ROS, CUDA
1mo
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Senior Research Scientist, Human‑AI Perception and Interaction
Santa Clara, California, United States
$192k-$357k/yr OnsiteFull Time
3+ YOEPh.D. or equivalent, 3+ years relevant experience, strong publication record, experience studying human behavior, proficiency with Python/Rust/C++ and PyTorch, mentoring and collaboration experience.
Python, Rust, C++, PyTorch
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Research Associate, In Vivo
Redwood City, California, United States
$95k-$115k/yr OnsiteFull Time
2+ YOEBS/AS in biology, veterinary science or related field (or 5+ years equivalent),2+ years rodent husbandry/colony experience, experience with dose administration, blood collection, necropsy, anesthesia, behavior assays, and ability to lift 50 lbs.
1mo
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Member of Technical Staff, Model Evaluation
San Francisco, California, United States
$350k-$500k/yr OnsiteFull Time
Build evaluation frameworks, automated pipelines, observability tooling, and agent-assisted workflows; partner with training and RL teams to measure and improve model behavior.
2mo
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Camera Tuning & Image Quality Engineer
San Francisco, California, United States
OnsiteFull Time
Apply computer vision, image processing, and machine learning to tune still image quality and understand user behavior; passion for photography and shipping product experiences at scale.
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