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553 research engineer jobs at 285 companies in Fairfield, CA

1w
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Research Engineer
San Francisco, California, United States
$200k-$400k/yr OnsiteFull Time
Decagon
Decagon: Conversational AI platform for automated customer support.
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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2w
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Research Engineer
San Francisco, California, United States
$200k-$350k/yr OnsiteFull Time
Console
Console: Automates IT support and internal operations using AI agents.
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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3w
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Research Engineer
San Francisco, California, United States
$180k-$280k/yr OnsiteFull Time
Greptile
Greptile: AI agents for autonomous code review and validation.
BS in Computer Science or equivalent, research experience with ML/LMs/agents, strong programming skills, and product intuition.
GitHub, LLMs
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5d
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Staff Research Engineer
San Francisco, California, United States
$195k-$230k/yr HybridFull Time
Onton
Onton: An AI-powered search engine for product discovery and shopping.
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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1w
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Research Engineer/Research Scientist, Personal AGI-Model Experience
San Francisco, California, United States
$295k-$555k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
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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2w
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Research Engineer
San Francisco, California, United States
$180k-$280k/yr HybridFull Time
SuperAnnotate
SuperAnnotate: Platform for building high-quality training datasets for AI models.
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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2mo
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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 platform for creating and editing visual content.
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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2mo
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Research Engineer
San Francisco, California, United States
$100k-$200k/yr OnsiteFull Time
Human Archive
Human Archive: A research lab focused on embodied intelligence and robotics backed by YC.
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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1mo
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Research Engineer
Berkeley or London or United States
$141k-$930k/yr HybridFull Time
Resolution
Resolution: Conducts research on aligning artificial superintelligence with human intent.
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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3w
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Research Engineer, Benchmarks
San Francisco or Singapore
OnsiteFull Time
HUD
HUD: Platform for reinforcement learning environments and AI agent evaluations.
Proficiency in Python,Docker,Linux; experience building benchmarks and evals; strong communication; research or publication experience preferred.
Python, Docker, Linux, ChatGPT, Claude Code, Cursor
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3mo
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Research Engineer
San Francisco, California, United States
OnsiteFull Time
Altara
Altara: Building a scientific intelligence platform for physical R&D.
Experience in applying AI/ML engineering, multi-agent workflows, multimodal data, or knowledge retrieval systems; strong product-minded and customer-focused mindset.
Python, Machine Learning, Multimodal data, LLM, Knowledge retrieval
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4d
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Research Engineer - Data & Evals
San Francisco, California, United States
OnsiteFull Time
Epsilon Health
Epsilon Health: Provides AI-powered radiology diagnostic services and medical imaging software.
2+ YOE2+ years ML or data engineering experience, strong Python, experience in data quality or evaluation for ML, ability to build pipelines and evaluation metrics, collaborate with clinicians in fast-moving research settings.
Python, DICOM, Spark, Airflow, Databricks
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3mo
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Research Platform Engineer
San Francisco, California, United States
$200k-$300k/yr HybridFull Time
World Labs
World Labs: Building foundational AI models to perceive and simulate 3D worlds.
5+ YOE5+ years building and shipping production systems; strong in at least one area of ML infra, distributed systems, data systems, or research tooling; Python expert; experience with ML researchers; high ownership mindset.
Python, C++, CUDA, Rust, Go
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4d
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Sr. Research Engineer
San Francisco or San Jose
$165k-$313k/yr OnsiteFull Time
Adobe
AdobeNASDAQ: ADBE: Provides software for digital media creation and marketing analytics
Experience building large-scale audio/video data pipelines, strong audio domain knowledge, generative-ML research experience, data acquisition/licensing and evaluation skills, and excellent communication.
Firefly, GenStudio
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1w
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Research Engineer, Environments
San Francisco or New York City or London
$180k-$500k/yr OnsiteFull Time
Mercor
Mercor: Connecting expert human intelligence with frontier AI model development.
Experience shipping environments, strong full-stack engineering, systems-level thinking, curiosity about model behavior, and bias to action to deliver high-quality RL environments and verifiers.
Temporal, Modal
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3d
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Research Engineer, Mechanical
San Francisco, California, United States
$140k-$165k/yr OnsiteFull Time
Gridware
Gridware: Real-time sensor platforms for power grid monitoring and safety.
MS or PhD in mechanical/civil/structural/engineering mechanics; strong solid mechanics fundamentals; experience with Python, MATLAB, SQL; sensor data analysis, experimental validation, and clear technical communication.
Python, MATLAB, SQL, GIS
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2mo
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AI Research Engineer
San Francisco or New York
$100k-$300k/yr OnsiteFull Time
Cogent Security
Cogent Security: Autonomous AI agents for enterprise vulnerability remediation.
Experience in automated reasoning, AI/ML for code reasoning, research publications, and independently driven work.
Terraform, Pulumi, CDK
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1mo
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Research Engineer, Post-Training
San Francisco, California, United States
$231k-$340k/yr HybridFull Time
Harvey
Harvey: AI platform for legal research and document analysis.
Hands-on post-training/model-training experience (SFT, RLHF, reward modeling, distillation) with open-weight models, strong Python, ability to run and debug GPU/distributed experiments, and self-manage applied research projects.
Python, GPU
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1w
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Research Engineer, AGI Safety and Alignment, DeepMind
San Francisco or Mountain View or New York City
$174k-$253k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
3+ YOEBachelor's in CS or related,3+ years software/ML engineering or ML research,experience with research teams and large-model training,strong communication and critical thinking.
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1mo
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Research Engineer, AI Models
San Francisco or United States
HybridFull Time
EnCharge AI: Develops energy-efficient analog in-memory AI hardware and software systems.
5+ YOE5+ years in ML research/systems, strong Python and PyTorch, hands-on with transformers/diffusion models, fine-tuning and evaluation pipelines, hardware-aware ML optimizations and benchmarking experience.
Python, PyTorch, PyTorch Profiler, Nsight
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