PromotedHiringCafe
Founding Machine Learning / AI Search Engineer
Cupertino, CA, US
$160k-$310k/yr On-SiteFull Time
Build the ML and AI search behind HiringCafe — ranking, recommenders, retrieval, and LLM agents that surface jobs people would never find on their own.
Python, PyTorch, Elasticsearch, LLMs
2mo
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(Senior) Machine Learning Engineer - Reinforcement Learning
Fremont, California, United States
$150k-$250k/yr OnsiteFull Time
3+ YOEM.S./Ph.D. or equivalent experience; 3+ years building production ML with strong RL experience; depth in deep learning and generative models; distributed training and large-scale data processing; strong communication.
Python, PyTorch, LLM, VLM, dLLM, VLA
2d
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Reinforcement Learning Infrastructure Engineer
Palo Alto, California, United States
$275k-$475k/yr OnsiteFull Time
3+ YOE3+ years distributed systems experience, strong Python and PyTorch or JAX, multi-node GPU orchestration (Ray, SLURM, Kubernetes), experience with actor-learner architectures and RL training pipelines.
Python, PyTorch, JAX, Ray, SLURM, Kubernetes
3mo
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Staff Reinforcement Learning Engineer – Whole Body Control
San Jose, California, United States
$150k-$250k/yr OnsiteFull Time
Strong dynamics/control background for legged robots; RL for robotics (PPO, SAC); tune hyperparameters; apply domain randomization and curriculum learning; lead projects and mentor.
Python, PyTorch, ROS
3w
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Lead AI Infrastructure Engineer, Reinforcement Learning
Santa Clara, California, United States
$179k-$306k/yr HybridFull Time
Design and operate distributed RL training infrastructure at scale; strong systems experience in ML platforms; proficiency with PyTorch/JAX, NCCL/MPI-style distributed training, C++/Python performance tuning; Bachelor's degree required.
PyTorch, JAX, NCCL, MPI, C++, Python
1mo
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Machine Learning Engineer - Reinforcement Learning
Fremont, California, United States
$150k-$250k/yr OnsiteFull Time
MS/PhD in CS/ML/AI or related field, or equivalent experience; RL/production ML experience; deep learning, sequence modeling, generative models; publish or ship impactful ML systems; large-scale training and data processing; lead ambiguous work.
Python, PyTorch, Reinforcement Learning
3mo
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Anthropic Fellows Program — Reinforcement Learning
London or Berkeley or San Francisco or London or Ontario or British Columbia or Remote-Friendly US (Travel Required)
$4k/wk HybridFull Time
Fluent in Python; available to work full-time; strong software engineering; interest in empirical AI research.
Python, Distributed Systems, Machine Learning, Research Tools
6h
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Research Scientist / Engineer – Reinforcement Learning Infrastructure
Redwood City, California, United States
HybridFull Time
Experience operating post-trained LLMs with reinforcement learning at scale, distributed PyTorch training, building RL environments and reward infrastructure, and debugging large asynchronous rollout pipelines.
vLLM, SGLang, PyTorch, FSDP, Tensor Parallel, Pipeline Parallel, Expert Parallel, veRL, OpenRLHF, TRL, Ray, NCCL, MPI, Kubernetes
2mo
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Machine Learning Engineer, Depot Automation
Mountain View, California, United States
$175k-$215k/yr HybridFull Time
3+ YOE3+ years of experience training/evaluating large ML models; 3+ years robotics; expertise in reinforcement learning.
Python, TensorFlow, PyTorch, Reinforcement Learning, Robotics
2w
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Research Engineer – Reinforcement Learning (RL) Systems & Infrastructure (Seed Infra)
San Jose, California, United States
OnsiteFull Time
Design and build scalable RL systems and infrastructure for large-scale model training; expertise in distributed systems, GPU optimization, Python/C++, and RL workflows.
Python, C++, PyTorch
2mo
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Developer Advocate – Reinforcement Learning
Santa Clara or United States
$152k-$288k/yr HybridFull Time
5+ YOEBachelor's in CS (or equivalent), 5+ years relevant experience (including 3 years engineering), strong communication/presentation skills, RL and LLM pipeline experience, and proficiency with PyTorch, JAX, and NeMo-RL.
PyTorch, JAX, NeMo-RL, Unsloth, TRL, OpenRLHF
2mo
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Developer Advocate – Reinforcement Learning
Santa Clara or United States
$152k-$242k/yr HybridFull Time
5+ YOEBachelor's in CS or related field; 5+ years exp including 3+ in engineering; strong communication; experience presenting to technical audiences; RL pipelines; PyTorch/JAX/NeMo-RL; able to work on training pipelines and demos.
PyTorch, JAX, NeMo-RL, Unsloth, TRL, OpenRLHF
2w
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Senior Machine Learning Engineer, Bidding Science
Mountain View or Washington
$160k-$239k/yr HybridFull Time
Expertise in machine learning, reinforcement learning, control theory, large-scale data analysis, online experimentation; strong software engineering in Python and deep learning (PyTorch).
Python, PyTorch, Spark, Ray, BigQuery, Flink, Claude Code, GitHub Copilot, Cursor
3mo
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Machine Learning Engineer, Intelligent Sensing Technology - Incubation
Cupertino, California, United States
HybridFull Time
3+ YOE BS with 3+ years in ML/AI engineering; knowledge of transformers, reinforcement learning; PyTorch; end-to-end ML pipelines; multimodal sensing integration.
PyTorch, Multimodal Sensing, ML Pipelines, On-device/Edge ML
1mo
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Machine Learning Engineer - Simulation Framework
Foster City or Seattle
$151k-$257k/yr HybridFull Time
Master's or PhD in CS/robotics/ML, deep reinforcement learning experience, strong C++ and Python skills, hands-on with JAX or PyTorch, experience bridging sim-to-real fidelity gaps and working with GPU/CUDA environments.
JAX, PyTorch, C++, Python, CUDA
4d
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Research Scientist / Engineer – Reinforcement Learning Infrastructure
Redwood City or United States or London or Europe
$188k-$395k/yr HybridFull Time
Hands-on experience post-training LLMs with RL at scale, distributed PyTorch expertise, building RL environments/reward/verifier systems, and strong GPU cluster and networking knowledge.
vLLM, SGLang, PyTorch, FSDP, Tensor Parallel, Pipeline Parallel, Expert Parallel, NCCL, MPI, Kubernetes, Ray
3mo
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Machine Learning Engineer, E-commerce Recommendation Foundation - USDS
San Jose, California, United States
$137k-$360k/yr OnsiteFull Time
Strong ML and deep learning foundation, proficiency in Python and PyTorch, experience with large-scale recommendation or model training, research mindset for LLMs/multimodal/reinforcement learning.
Python, PyTorch
2d
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Machine Learning Software Developer
Livermore, California, United States
$122k-$186k/yr OnsiteFull Time
Ability to develop ML and LLM-centric software for HPC and multi-modal sensor data; Python/C++/Java proficiency; familiarity with reinforcement learning, agentic AI, GNNs, MCP; ability to obtain DOE Q clearance; BS required, MS preferred.
Python, C++, JAVA, Flux, SLURM, Large Language Model (LLM), Model-Context-Protocol (MCP)
2mo
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Staff Robotics Engineer / Tech Lead – Whole-Body Control & Robot Learning
Santa Clara or Mountain View
$215k-$364k/yr OnsiteFull Time
5+ YOEPhD or Master's in robotics/engineering; 5+ years in reinforcement learning, robotics, or related areas; strong control, learning, and imitation learning skills; cross-disciplinary communication and leadership experience favored.
Reinforcement Learning, Robot Learning, Motion Planning, Simulation, Imitation Learning, PPO, SAC, Diffusion Policies, Robot Dynamics
2w
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ML Engineer – Robotics
Mountain View, California, United States
$220k-$300k/yr OnsiteFull Time
3+ YOE3+ years ML/robotics experience, proficiency in Python and C++, PyTorch or TensorFlow, ROS/ROS2, simulation experience, reinforcement learning familiarity, and real-time/embedded deployment experience.
Python, C++, PyTorch, TensorFlow, ROS, ROS2, Gazebo, Isaac Sim, CARLA, MuJoCo, PyBullet
3d
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Robotics Engineer
Sunnyvale, California, United States
$60-$85/hr OnsiteContract
Degree in robotics/mechatronics/engineering, expertise in humanoid kinematics and dynamic control, proficiency in C++ and Python, experience with ROS 2 and simulation, background in ML/Reinforcement Learning preferred, background check and drug test required.
C++, Python, ROS 2, Gazebo, NVIDIA Isaac Sim, SST, TTS
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