RL Environments Engineer - Shape AI Training Sandboxes
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Labelbox is seeking a Forward Deployed Engineer to own the design, development, and deployment of reinforcement learning environments. You will build sandboxed, reproducible execution environments that AI agents interact with during training and evaluation—terminal-based benchmarks, browser and computer-use environments, and tool-augmented workspaces.
This is a hands-on engineering role; you will write production-quality infrastructure code, integrate with open-source RL tooling, and collaborate
#J-18808-Ljbffr- ...AI Talent Now in San Francisco is seeking a skilled RL Environment Engineer to design impactful datasets that influence the learning of frontier AI models. You will collaborate with elite research teams at leading AI labs to refine reinforcement learning environments and...Suggested
- ...infrastructure frontier AI labs build... ...unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into... ...- from SFT and RL to tool use,... ...workloads. Help shape the architecture... ...and infrastructure engineers to translate bottlenecks...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...Research Engineer, Machine Learning (RL Velocity)Remote-Friendly (Travel... ...interpretable, and steerable AI systems. We want AI... ...iterate quickly on training runs. As a Research... ...teams (inference, sandboxing, and many more) to understand... ...decisions that shape how Anthropic does RL...TrainingWork at officeRemote workVisa sponsorshipFlexible hours
- ...About the Team The RL and Reasoning team... ...As a Research Engineer/Research Scientist... ...advance the frontier of AI alignment and... ...at the heart of training intelligent, aligned... ...complex environment where rapid iteration... ...shared. Join us in shaping the future of technology...TrainingWork at officeRelocation package
- ...interpretable, and steerable AI systems. We want... ...researchers, engineers, policy experts,... .... About the RL teams Our Reinforcement... ...and training methodologies Enhancing... ...and implement RL environments and evaluations for... ...experiments and shape our roadmap. Deliver...TrainingWork at officeVisa sponsorshipFlexible hours
- ...looking for a hybrid Systems Engineer and AI Researcher to lead the development... ...framework and post-training data pipelines. You will design sandboxed execution environments, high-throughput reinforcement... ...safely. Scale Post-Training & RL Pipelines: Implement high-throughput...TrainingWork at office
- ...over long horizons. The RL Scaling team works on... ...squarely across research and engineering. You'll develop next-... ...how RL training and sampling scale with... ...performance characteristics shape architecture and algorithm... ...that the highest-impact AI research will be big science...TrainingWork at officeVisa sponsorshipFlexible hours
$320k - $405k
...interpretable, and steerable AI systems. We want AI... ...researchers, engineers, policy experts, and... ...At frontier scale, an RL run is a large distributed system: training, sampling, and environment execution run concurrently... ...Kubernetes, and with sandboxed or virtualized code...TrainingWork at officeVisa sponsorshipFlexible hours$250k - $300k
...Researcher or engineer? This role wants both, in one person. A profitable, seed-stage AI company in San Francisco creates long... ...horizon reinforcement learning environments and post-training data for leading AI labs... ...into them Long-horizon RL environments and tasks in...TrainingFull time- ...Group in San Francisco is seeking a Research Engineer – RL Infrastructure & Agent Environments to build the environments, evaluation systems, and supporting infrastructure used to train and assess long-horizon enterprise AI agents. You will work on the engineering and...Training
- ...Scientist, Research Engineer, AI Systems EngineerThe Recursive... ...evaluations, and training models to develop... ...harnesses, synthetic data, RL environments, and model training.... ...systems, and sandboxed runtimes that support... ...widely shared. Join us in shaping the future of...Training
- ...Applied AI / AI Research Data EngineerLocation: San Francisco, CAWork Model... ...high-quality reinforcement-learning environments and agents sold to the world's leading... ...new domains.The OpportunityAs an RL Environment Software Engineer, you will sit at the intersection of...
$150k - $200k
...Have you built the environments and benchmarks that AI models learn from? Then this is your... ...benchmarks those labs use to train and test their models. You'd be their first engineer in San Francisco, and from about... ...Designing and building RL tasks and environments that...TrainingFull timeWork at office- ...Research Engineer, RL EngineeringSan Francisco, CA | New York City, NY... ...interpretable, and steerable AI systems. We want AI to be safe... ...the cutting-edge systems that train AI models like Claude. You're... ...training jobs in a test environment so that we can quickly detect...TrainingWork at officeVisa sponsorshipFlexible hours
$300k - $405k
...Research Engineer, Cybersecurity RL (Reinforcement Learning)San Francisco, CA |... ...interpretable, and steerable AI systems. We want AI to be safe... ...and implementing RL environments, conducting experiments and... ...your work into production training runs, and collaborating with...TrainingWork at officeVisa sponsorshipFlexible hours- ...infrastructure frontier AI labs build internally,... ...Lab, unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into... ...scale - from SFT and RL to tool use, agent workflows... ...working with systems engineers on hardware-aware...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...infrastructure frontier AI labs build internally,... ...Lab, unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into one... ...frontier scale - from SFT and RL to tool use, agent... ...model. Your work will shape both broad pretraining...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...Research Engineer Post-Training Data Location: San Fran Employment Type... ...Data Generation Research Environments Frontier AI Profile: Researcher-engineer... ...Exposure to post-training RL long-horizon tasks or... ...deep domains Shape how research and data production...TrainingFull time
$225k - $300k
...infrastructure frontier AI labs build... ...unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into... ...- from SFT and RL to tool use,... ...deals you close will shape what Prime Intellect... ...of AI and an engineer at the same time...TrainingContract workRemote workVisa sponsorshipRelocation packageFlexible hours- ...Primarily On-site We are seeking an Agent Evaluation Infrastructure Engineer to build the environments, evaluation systems, and supporting infrastructure used to train and assess long-horizon enterprise AI agents. The Opportunity You will work on the engineering and...Training
$150k - $300k
...infrastructure frontier AI labs build... ...unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into... ...- from SFT and RL to tool use,... ...with performance engineering at its core. The... ...Opportunity to shape the future of decentralized...TrainingWork at officeRemote workVisa sponsorshipRelocation packageFlexible hours- ...Francisco is building open frontier AI and seeking research engineers and scientists to develop RL algorithms, scaling research, and training frameworks. You will contribute to a... ...full-stack platform unifying compute, environments, evaluations, and deployment for frontier...TrainingRemote work
- ...Forward Deployed AI Strategy Lead... ...unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into... ...scale - from SFT and RL to tool use,... ...Applied Research and Engineering can actually... ...important. You will help shape the product,...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...transforming medical imaging with frontier AI. We seek a Research Scientist to own post-training, reward modeling, and... ...medical imaging data and cutting-edge RL techniques. Join a team advancing... ...strategies, while publishing and shaping deployment practices in healthcare...Training
$175k - $250k
...Research Engineer About Scorecard We’re a small... ...engineers to help shape the future of AI development. This... ...to take action in the environment. Convert transcripts... ...simusers run inside training environments where their... ...pipelines. RL experience: building...TrainingWork at office- ...serve every frontier AI lab with the mission of... ...have the opportunity to shape the engineering organization and lead... ...will design and run training experiments that isolate... ...controlled SFT and RL - base post-training experiments... ..., model APIs, compute environments, and evaluation...TrainingLocal area
- ...Preference Model is building automated ML research engineering to advance RL environments and post-training for large language models. We seek machine learning... ...and engineering, implementing novel approaches and shaping research directions. You will train and evaluate models...Training
- ...foundation for agent engineering in the real world,... ...production-ready AI agents that teams... ...contributions can shape how this... ...Deployment, Fleet, and Sandboxes), our open source... ...fine-tuning and post-training custom models. The... ...reliably in real-world environments. Location: SF...TrainingWork at officeFlexible hours
- ...infrastructure frontier AI labs build internally,... ...Lab, unifies compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into one... ...frontier scale - from SFT and RL to tool use, agent... ...of inference-engine internals. Strong Python...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...product, enabling data vendors to publish RL environments and training data while helping research teams... ...offerings. You’ll collaborate with engineering, research, GTM, and operations to... ...and marketplace health metrics while shaping the product strategy for a growing marketplace...TrainingRemote work
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