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2,229 research engineer jobs at 725 companies in California

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Research Engineer
San Francisco, California, United States
OnsiteFull Time
Proximal
Proximal: Private San Francis research lab developing coding data and benchmarks for autonomous coding agents.
Strong engineering ability, experimental instincts, research judgment, problem-solving skills, self-direction, and end-to-end ownership of ambiguous research problems.
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1mo
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Research Engineer
San Francisco, California, United States
$200k-$400k/yr OnsiteFull Time
Decagon
Decagon: Conversational AI platform for enterprise customer experience automation.
2+ YOE2+ years AI/ML engineering or research experience, experience training and deploying LLMs, fluency in Python and modern ML tooling, track record of productionizing research.
Python, LLMs
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Research Engineer
Redwood City, California, United States
$180k-$300k/yr HybridFull Time
DatologyAI
DatologyAI: AI data-curation that automatically selects and optimizes training data for companies developing deep-learning models.
4+ YOEBachelor's or equivalent, 4+ years research lab experience, strong ML systems and distributed training background, software engineering and empirical research skills; PhD preferred; publication/open-source contributions valued.
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Research Engineer
San Francisco, California, United States
$210k-$450k/yr OnsiteFull Time
AfterQuery
AfterQuery: N AI applied research lab serving frontier model developers with training data and evaluation systems.
2+ YOERequires 2+ years of ML engineering, research engineering, or ML infrastructure experience; strong Python and software engineering skills; PyTorch, JAX, Ray, Slurm, LLM fine-tuning, post-training, and evaluation experience.
Python, PyTorch, JAX, Ray, Slurm
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Research Engineer
San Francisco, California, United States
$200k-$350k/yr OnsiteFull Time
Console
Console: AI-native IT service-management software platform automating employee support requests for companies.
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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Research Engineer
San Francisco, California, United States
$180k-$280k/yr OnsiteFull Time
Greptile
Greptile: AI code review platform for software teams that reviews pull requests with full codebase context.
Bachelor's degree in computer science or equivalent; research experience in math, computer science, or physics; strong programming skills and product intuition. ML, LLM, agent, or model post-training research is a bonus.
language models, multi-agent systems, LLMs
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Sr. Research Engineer
Valencia, California, United States
$100k-$144k/yr HybridFull Time
Advanced Bionics
Advanced Bionics: U.S.-based cochlear implant manufacturer helping children and adults with severe-to-profound hearing loss hear again.
5+ YOEBachelor's degree required; master's preferred. Requires 5+ years with a bachelor's or 3+ with a master's in systems engineering, embedded systems, or neural signal research, plus hardware and prototype experience.
MATLAB, Python, C/C++, LabVIEW
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Staff Research Engineer
San Francisco, California, United States
$195k-$230k/yr HybridFull Time
Onton
Onton: AI-powered product search and discovery engine helping shoppers find furniture and home decor.
Significant software/ML/research engineering experience, deep understanding of AI (neurosymbolic approaches), strong implementation and critical thinking skills; PhD/Master's preferred.
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Research Engineer
Los Angeles, California, United States
$92k-$95k/yr OnsiteFull Time
University of Southern California
University of Southern California: Private research university based in Los Angeles.
3+ YOEMaster's degree required; 3 years of research experience, machine learning and deep learning for biomedical imaging, computer vision, statistics, image analysis, and scientific communication.
machine learning, deep learning, AI, GitHub
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Research Engineer/Research Scientist, Personal AGI-Model Experience
San Francisco, California, United States
$295k-$555k/yr HybridFull Time
OpenAI
OpenAI: AI research and deployment focused on beneficial AGI.
Strong ML engineering and research experience with reinforcement learning and large models; ability to design evaluations, implement and debug research code, and collaborate across research and product teams.
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Research Engineer, Benchmarks
San Francisco, California, United States
$150k-$250k/yr OnsiteFull Time
Clera
Clera: AI-powered talent agent matching candidates to startup roles.
2+ YOERequires 2–4 years in research or ML engineering, proficiency in Python, Docker, and Linux, and experience designing AI agent benchmarks, evaluation environments, metrics, statistical analyses, and validation studies.
Python, Docker, Linux
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Research Engineer
San Francisco, California, United States
OnsiteFull Time
Pantograph
Pantograph: San Francis public-benefit robotics research building generally intelligent robots and models that learn by doing.
Experience training models on large GPU clusters, operating distributed systems, processing large datasets, and building research or production infrastructure; comfort with Kubernetes and large-scale data tools.
Kubernetes, JAX, CUDA, Linux
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Research Engineer
San Francisco, California, United States
$180k-$280k/yr HybridFull Time
SuperAnnotate
SuperAnnotate: Private AI data platform helping frontier AI teams build and evaluate models with human data.
MS/PhD or equivalent research experience in ML/CS, deep ML knowledge, hands-on experience with RL/agentic systems or multimodal evaluation, strong Python skills, autonomy, and technical writing.
Python
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Research Engineer, Infrastructure, Kernels
San Francisco, California, United States
$350k-$475k/yr HybridFull Time
Thinking Machines Lab
Thinking Machines Lab: Private AI research and product building customizable multimodal systems for researchers and the wider public.
Bachelor's or equivalent, strong GPU/kernel engineering (CUDA/CuTe/Triton), experience with PyTorch/JAX, profiling and optimizing compute-intensive workloads, collaborative research orientation.
CUDA, CuTe, Triton, PyTorch, JAX, XLA, TVM
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Senior Research Engineer - Video Agents
San Francisco, California, United States
$220k-$280k/yr HybridFull Time, Temporary
Canva
Canva: Online graphic design and visual communication platform.
5+ YOE5+ years ML research or research engineering; experience shipping LLM-powered systems; Python and PyTorch; multimodal models; agent planning, memory, and evals; strong experimentation.
Python, PyTorch
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Research Engineer, Applied AI
San Francisco, California, United States
OnsiteFull Time
HeyMilo AI
HeyMilo AI: Agentic recruiting platform helping high-volume hiring teams evaluate candidates faster, consistently, and fairly.
Advanced degree in AI/ML or CS, strong RL and LLM experience, Python and systems engineering skills, experience with containers and cloud, and ability to own research-to-production projects.
Python, Docker, Linux, LLMs
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3mo
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Research Engineer
San Francisco, California, United States
$100k-$200k/yr OnsiteFull Time
Human Archive
Human Archive: Private physical-AI data lab building hardware, sensor datasets, and models for robotics companies.
Master’s or PhD in robotics, computer vision, sensing systems, or related fields; published research in sensor fusion, perception systems, multimodal datasets, or embodied AI; experience with RGB-D, IMUs, motion capture, tactile sensing, or robotics systems; strong hardware intuition; experience with RL and real deployments.
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Research Engineer
Pasadena, California, United States
$80k-$105k/yr OnsiteFull Time
Laser Interferometer Gravitational-Wave Observatory
Laser Interferometer Gravitational-Wave Observatory: Private nonprofit science and engineering research university serving undergraduate and graduate students in Pasadena.
3+ YOEBachelor in physics/engineering/optics,3+ years experimental lab experience,2+ years MATLAB/Python,experience with engineered systems,ability to work in cleanroom and lift 20+ lbs,strong communication and teamwork.
MATLAB, Python, SolidWorks, Zemax
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2mo
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Research Engineer - MSL FAIR Foundations
Menlo Park or Seattle or New York City
$154k-$217k/yr OnsiteFull Time
Meta
MetaNASDAQ: META: Builds technologies that help people connect, find communities, and grow businesses.
3+ YOEBachelor's degree (or equivalent), 3+ years machine learning engineering/research experience, proficiency in Python and PyTorch, strong software engineering practices, and ability to work independently in fast-paced research environments.
Python, PyTorch
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Research Engineer
Berkeley or London or United States
$141k-$930k/yr HybridFull Time
Resolution
Resolution: Nonprofit AI safety research organization using theory and automation to improve alignment of artificial superintelligence.
Strong software engineering with production Python, ML framework experience (PyTorch or Jax), distributed-training knowledge, ability to ship complex systems, bachelor's degree (or equivalent) in CS/physics/math/ML, and motivation for ASI alignment.
Python, PyTorch, Jax, CUDA, Slack
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