Applied RL Scientist, Post-Training & Data Signals
Nxt Level
Nxt Level in Seattle is seeking an Applied Researcher, Post-Training to collaborate with customer research labs and translate ambiguous goals into concrete experiments and deliverables. This is a hands-on, research-first role focused on reinforcement learning, data quality, and training signals. The position involves designing and running post-training loops, building reward functions and evaluation harnesses, and identifying signals that truly improve model capability. #J-18808-Ljbffr Nxt Level
$142.8k - $193.2k
...want to work on Reinforcement Learning (RL) post-training of frontier Large Language Models (... ...customers bring problems that will give Applied Scientists like you endless opportunities to see... ...problems, have access to virtually endless data and computational resources, and to...DataTrainingImmediate startFlexible hours- ...Applied Researcher, Post-Training Location: In-person - 3 days in-office in NYC or... ...Learning, Post-Training, Training Data, Evals, Frontier AI... ...researcher with deep hands-on RL experience About Our Client... ..., datasets, reward signals, evaluation harnesses, and...DataTrainingFull timeWork at office
$142.8k - $193.2k
...environments at Amazon scale. Our scientists and engineers push the... ...learning. We learn from real-world data at a scale that few teams in... ...can access.We are seeking an Applied Scientist to advance... ...Amazon sells. You will focus on training these policies in simulation...DataTrainingFull timeTemporary workSeasonal workFlexible hours$198.9k - $269k
...are looking for a Principal Applied Scientist to own the scientific... ...yourself and prove it on real data.Key job responsibilitiesOwn... ...human interaction into usable training signal, and set the direction for... ...multi-turn systems, including RL-based post-training, environment...DataTrainingLocal areaFlexible hoursDay shift$167.1k - $226.1k
...environments, at Amazon scale. Our scientists and engineers push the... ...learning. We learn from real-world data at a scale that few teams in... ...an experienced Senior Applied Scientist to help guide a small... ...these behaviors, from simulation training through reliable execution on...DataTrainingFull timeTemporary workSeasonal workFlexible hours$142.8k - $193.2k
...looking for a robotics scientist to build and... ...responsibilities- Develop, train, and benchmark... ...building real-time data pipelines for multimodal... ...campaigns applying active learning, Bayesian... ...optimization, or RL to drive iterative... ...generated theory. The signal here is not a...DataTrainingWorldwideFlexible hours- ...be you?As a Principal Applied Scientist, you will lead the architecture... ...services for model training, fine-tuning, large-... ...long-term memory, and RL or imitation learning... ...ML engineering, data science, and software... ...be at the top of the posted range based on the salary...DataTrainingWork at officeImmediate startRemote work
$142.8k - $193.2k
...understanding. We are looking for an Applied Scientist II to push the science behind... ...responsibilities- Design, train, and ship deep-learning... ...query types.- Build the training data and evaluation methods that... ...a first-class relevance signal, and verify visual constraints...DataTrainingWorldwideFlexible hours$142.8k - $193.2k
As an Applied Scientist in Amazon Fullfilment Technology, you will... ...action execution. You will train LLMs using a combination... ..., SFT, continual post-training, and Reinforcement Learning (RL).These systems are deployed... ...training and preference data for specific use cases (...DataTrainingFlexible hours- ...reliable, and trustworthy: the training and evaluation pipelines, the reward and feedback signals, and the safeguards that prevent... ...measurement of "better." Own data pipelines and automated data flywheels... ...not need to be a research-level RL expert). Has seen — or can...DataTraining
$142.8k - $193.2k
...are seeking an exceptional Applied Scientist, Global Selling Partner Risk... ...following areas: algorithms and data structures, parsing,... ...fundamentals, including architecture, training/inference lifecycles, and... ..., structured, behavioral signals) Amazon is an equal opportunity...DataTrainingFull timeFlexible hours- ...moderate the tremendous amount of data generated on the platform.... ...large-scale MoE architecture training and routing optimization, cross... ...understanding and generation2. RL-driven agentic decision-making... ...of multi-dimensional reward signals for few-shot scenariosProject...DataTrainingFlexible hoursShift work
$140k - $175k
# Senior Applied ScientistOutreachSeattle, WA (Hybrid)... ..., transcripts, and CRM data into useful sales intelligence... ...of the work: building, training or deploying AI systems... ...work of the role. The scientist will develop AI... ...intelligence, contextual signals, and actionable insights...DataTrainingFull timeRemote workFlexible hours$142.8k - $193.2k
...Amazon Live has a mature data platform powering... ...will be one of the first scientists on this team —... ...intelligence, and ranking signals from scratch for a product... ...We are looking for an Applied Scientist to join the... ...Other weeks you will be training a multimodal model on...DataTrainingFlexible hours$156.8k - $355k
...started.About the RoleWe’re looking for an Applied Scientist (ALL LEVELS) to push the boundaries of... ...how we use structured and unstructured data to make better decisions for our... ...systemsImprove the feature engineering and model training pipelines that power our production...DataTraining$167.1k - $226.1k
...for years to come. We are seeking an Sr. Applied Scientist to join our team and help tackle... ...a multidisciplinary team of engineers, data scientists, and domain experts, you will... ...diversity of ideas, perspectives, and voices.Training and Career growthWe’re continuously...DataTrainingFlexible hours$142.8k - $193.2k
...can scale? Our teams of hundreds of scientists, engineers, aerospace professionals... ...where you can drive innovation, apply state-of-the-art technologies to solve... ...the generation of input data. It extends through model training, development and maintenance of software...DataTrainingFlexible hours$142.8k - $193.2k
As an Applied Scientist, you will work on high-impact, real-world problems in product selection... ...of the following areas: algorithms and data structures, parsing, numerical optimization... ...architecture design and deep learning training and optimization and model pruning-...DataTrainingFlexible hours$136k - $184k
...seeking a dedicated, skilled, and innovative Applied Scientist with a robust background in machine... ...to ensure the highest standards of data quality, to build industry-leading technology... ...experiences through high-quality training and evaluation data that powers state-of...DataTrainingFlexible hours$198.9k - $269k
...physical AI, working with world-class scientists and engineers, and seeing your... ...seeking an exceptional Principal Applied Scientist to drive technical innovation... ...image, video, and geospatial data- Solve computational challenges to train foundation models at scale, taking...DataTrainingWorldwideFlexible hours- ...explore creative ways to embed Liberty’s data in products, and hold all these solutions... ...data, document and embedding pipelines, applying MLOps and LLMOps best practices for reproducibility... ....Research and prototype new methods for training, adapting and evaluating generative...DataTrainingWork at officeLocal areaRemote work2 days per week
$167.1k - $226.1k
...customers and society expect. As a scientist on this team, you will:-... ...description, we encourage candidates to apply. If your career is just... ..., perspectives, and voices.Training & Career GrowthWe’re continuously... ...large amounts of complex data and communicate complex concepts...DataTrainingFlexible hours$142.8k - $193.2k
...environments — at Amazon scale. Our scientists and engineers push the... ...learning. We learn from real-world data at a scale that few teams in... ...can access.We are seeking an Applied Scientist to join our Motion... ...policies from simulation training to reliable, real-time execution...DataTrainingFull timeTemporary workSeasonal workFlexible hours$136k - $184k
Amazon's Worldwide Grocery Stores (WWGS), Data & Science team is seeking an Applied Scientist to join our Sales & Operations Planning (S&OP) and Supply Chain... ...-series forecasting or demand planning- Experience training and deploying models in a cloud environment (e.g., SageMaker...DataTrainingWorldwideFlexible hours$142.8k - $193.2k
...of products, petabytes of multimodal data, millions of sellers, dozens of languages... ...an innovative and customer-focused applied scientist to help us make the world's best product... ...multimodal LLMs, including hands-on post training techniquesAmazon is an equal opportunity...DataTrainingWorldwideFlexible hours$167.1k - $226.1k
...one of them depends on data we can trust. The Frontier... ...— for the data that trains frontier models, and for... ...science, mentor junior scientists, and present results to... ...pipelines behind model post-training and alignment-... ...country/region you’re applying in isn’t listed, please...DataTrainingFlexible hours$142.8k - $193.2k
...Services organization is looking for an Applied Scientist with deep Computer Vision (CV) expertise... ...learning broadly, to help turn that visual data into automated, operational decisions,... ...network.In this role, you will develop, train, and productionize computer vision...DataTrainingFlexible hours$142.8k - $193.2k
...Prevention team is looking for an innovative Applied Scientist to help keep AWS a safe and trusted... ...large language models (LLMs), synthetic data generation, and adversarial simulations... ...addition to formal mentors, we work and train together so that we are always learning...DataTrainingWorldwideFlexible hours$198.9k - $269k
As part of the AWS Applied AI Solutions organization, we have a vision... ...work alongside world-class scientists to build AI that transforms... ...tailor, and deploy on their own data. The science challenges are... ...model customization and training methods that let customers get...DataTrainingImmediate startWorldwideFlexible hours$142.8k - $193.2k
...experiences across Amazon.We are hiring an Applied Scientist to push the science behind this... ...full model lifecycle, from mid-training reasoning models on shopping data to aligning the models with... ...queries, and products.- Mid-train and post-train large language models on shopping...DataTrainingFlexible hours
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