Research Engineer, RL & LLM Post-Training — Scale ML Infra
Preference Model
Preference Model is building automated ML research engineering to advance RL environments and post-training for large language models. We seek machine learning Research Engineers or Research Scientists to blend research and engineering, implementing novel approaches and shaping research directions. You will train and evaluate models on proprietary RL environments, architect training infrastructure, and optimize end-to-end runs to accelerate research cycles. #J-18808-Ljbffr Preference Model
$270k - $340k
Principal AI Research Scientist, Research... ...ranging from post-training open source... ....About the Scaling Research... ...language model (LLM) training and... ...details with engineering partners.Role... ...post-training, RL and inference... ...end‑to‑end ML systems for distributed... ...systems and infra teams to push...TrainingLocal areaWorldwide- ...Research Engineer Sesame believes in a future where computers... ...partner with research and infra to prototype, train, and deploy state-of-... .... Squeeze silicon — scale training and inference for LLM-class workloads; chase... ...software engineer who loves ML; comfortable writing...TrainingFull timeContract workFlexible hoursShift work
- ...is an applied research lab curating data... ...equity. As we scale, you’ll have the... ...to shape the engineering organization and... ...design and run training experiments that... ...SFT and RL - base post-training experiments... ...research engineering, ML infrastructure,... ...with LLM fine-tuning, post...TrainingLocal area
$250k - $350k
...is part of the Scale Generative AI Platform... ...with applied ML research, design, and... ...Research Engineer, you will operate... ...This could mean training and fine-tuning... ...online or offline RL — and validate... ...methods, LLM alignment, or applied... ...on each job posting reflects the minimum...TrainingFull time$193.3k - $261.5k
...team, you will lead research and development... ...agentic AI systems that scale efficiently to... ...with engineering teams to bring research... ...Machine Learning and LLM fundamentals, including... ...architecture, training/inference lifecycles... ...techniques- Knowledge of ML frameworks...TrainingInternshipLocal areaFlexible hours- ...is building automated ML research engineering. Existing frontier... ...lack of high-quality RL training environments. Our first... ...push the frontier of post-training on large language... ..., or similar. Help scale our systems to handle... ...running end-to-end LLM post-training...TrainingVisa sponsorshipRelocation package
- ...Research Engineer Lotus Health is a groundbreaking primary care app that... ...: dataset curation, model training and evaluation, retrieval and... ...Track record shipping applied ML or LLM features to real users, not... ...care for real people at scale. You will work with exceptional...Training
$174k - $252k
Research Engineer, Gemini Information Retrieval, DeepMind... ...multi-stage training pipelines or algorithms... ...Learning (RL) algorithms, automated... ...evaluation systems, or LLM reflection and... ...innovations into large-scale production... ...otherwise in the job posting. Equity is granted...Training$189.6k - $237k
Scale’s ML platform (RLXF) team builds our internal... ...language model training and inference. The... ...powering MLEs, researchers, data scientists and... ...and evaluation of LLM's, as well as evaluation... ...software engineering skills, proficient... ...Demonstrated expertise in post-training methods &...TrainingFull time$290.4k - $363k
Scale AI is the data foundation for... ...Machine Learning Engineer (MLE) on the... ...systems that combine LLM reasoning, tool... ..., balancing research-driven... ...Experience deploying ML systems in cloud... ...displayed on each job posting reflects the... ...education or training. Scale...TrainingFull time- ...is the world’s leading research accelerator for... ...quality data, advanced training pipelines, plus top AI... ...Turing builds large-scale datasets and reinforcement... ...environments that power post-training for leading AI... ...includes: Software engineering environments for coding...TrainingContract workPart timeFor contractors
$155k - $269k
...efficient simulation. As a Research Engineer in the World Models... ...role focuses on large-scale world models for temporal... ...generative models, LLM/VLM/VLA models, and predictive... ...planning, testing, and training. You will… -... ...tooling for large-scale ML training (e.g., cloud platforms...TrainingFull timeWork at officeWork from homeFlexible hours$50 per hour
...roadmaps, and mentor junior engineers to elevate the... ...establishing reproducible training pipelines, and... ...exposure to cutting‑edge research, mentorship from... ...tuning, and deploying LLM solutions at scale.Experience with RAG and... ...years of hands‑on AI/ML engineering experience...TrainingFull timeContract workTemporary workWork experience placementCasual workFlexible hours- ...Research Engineer Post-Training Data Location: San Fran Employment Type: Full-time... ...Researcher-engineer with strong ML and software engineering... ...ability to build systems that scale data generation... ...Exposure to post-training RL long-horizon tasks or frontier...TrainingFull time
- ...We are looking for a hybrid Systems Engineer and AI Researcher to lead the development of our agent evaluation framework and post-training data pipelines. You will design... ...step action trajectories safely. Scale Post-Training & RL Pipelines: Implement high-throughput...TrainingWork at office
- ...Workspace.Sierra’s Applied Research team advances the... ...tasks. Our work spans post-training open-weight models for... ...unsolved applied AI and ML problems. Pushing the... ....Work with large-scale, proprietary datasets... ...timeLocation TypeOn-siteDepartmentEngineeringPlatform EngineeringTrainingFull timeFlexible hours
$197.3k - $313.7k
...software and platform engineers to embed in our AI... ...world-class research and products used... ...interaction at hyper-scale. This role is crucial... ...to support ML and AI efforts.Design... ...and opt out options.Posting... ...promotion, benefits, training, assessment of job...TrainingFull time$207k - $300k
...Collaborate with safety engineering to develop new... ...based on adversarial research.Contribute to increasing... ...allowing them to setup large-scale tests and deploy... ...will apply engineering, ML, RL, and cybersecurity knowledge... ...relevant education or training. US: $207000 - $300000...Training- ...Human Archive is a research lab backed by Y Combinator... ...deploy them globally at scale, and publish research.... ...Opportunity As a Research Engineer, you'll work on... ...used for downstream VLA training. You'll research emerging... ...closely with hardware, ML, and research teams to...TrainingShift work
- ...accelerate schedules for large-scale commercial projects... ...collection and model training through edge deployment... ...Jetson AGX Orin. Every research project will have a deployment... ...MS/PhD in CS, Robotics, ML, or equivalent... ...of: imitation learning, RL, vision-language models,...Training
$140k - $250k
...person Industry: AI training data infrastructure... ...priority and a genuinely hard research problem. Because data... ..., ensuring quality at scale is the single biggest... ...growth. As a Research Engineer, you will build the automated... ...Background in AI/ML engineering, or software...TrainingFull timeWork at office$175k - $250k
...to push the boundaries of AI research and development. Their... ...applications. The Role: As a Research Engineer in Pre-Training, you'll develop and... ...training strategies, and large-scale data pipelines to drive AI innovation... ...We’re Looking For: Strong ML fundamentals and hands-on...TrainingFull timeRelocation package$100k - $300k
...failing. We believe massive scale through data-driven machine learning... ...Overview We are hiring Research Engineers to develop scalable robotic... ...implement new algorithms for training and optimizing general-purpose... ...disciplines (Perception, Robotics, RL/IL, Machine Learning, etc.)....TrainingFull time$250k - $350k
...environments, and frontier research benchmarks that improve model... ...capabilities in software engineering, enterprise knowledge work,... ...The Role Turing builds large-scale datasets and reinforcement learning (RL) environments that power post-training for the world’s leading AI...Training$211k - $251k
...areas such as applied ML, search, ranking, recommendations... ...advertising systems; training and deploying language,... ...outcomes; large-scale consumer datasets or high... ...to applied ML research or benchmarks. Responsibilities... ...learning challenges in post-training, voice AI, and...TrainingFull timeFlexible hours- ...Francisco, California. The Role: As a Research Engineer - AI Performance & Kernel... ...optimize the performance of our large-scale language model training and inference stacks. You will work... ...development and optimization for large-scale ML workloads, using any level of the...TrainingWork at officeRelocation package
- ...AI Research Engineering Lead Zürich • San Francisco... ...Responsibilities Drive Training & Architecture:... ...for large-scale, multi-task foundation... ...models across pre- and post-training. Scale... ...standards for ML engineering, experimental... ...classical control/RL background....TrainingFull timeWork at officeRelocationRelocation package
$249.12k - $367.92k
...to build the shared ML and AI... ...lifecycle — from large-scale data curation and model... ...Staff Machine Learning Engineer, you will lead the... ...pipelines that translate research into production... ..., distributed training, serving infrastructure... ...capabilities (serving infra, feature stores)...TrainingWork experience placementWork at officeLocal areaImmediate start- ...California. The Role: As a Research Engineer - Agency and Reasoning ,... ...in reinforcement learning, post-training, and human preference learning... ...and applying your ideas at scale to our next generation of... ...reasoning or more classical RL tasks Experience with language...TrainingWork at officeRelocation package
$130k - $225k
...world data safer to use in AI training and evaluation. You will... ...statistical models, classifiers, and LLM-based approaches. Create... ...fields. Partner with engineering, research, operations, and customers to... ...building production data or ML systems in Python. Hands-on...TrainingVisa sponsorship
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