The LLM Data Company (YC X25) provided pay rangeThis range is provided by The LLM Data Company (YC X25). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range$150,000.00/yr - $250,000.00/yrDirect message the job poster from The LLM Data Company (YC X25)The LLM Data Company creates tooling for model evaluation and reinforcement learning. We’re currently building doteval — an AI-assisted workspace for technical and non-technical staff to create evals, rewards functions, and environments. We’re a seed-stage company backed by Y Combinator and Tier-1 VCs and work with some of the largest AI companies in the world.We’re looking for founding engineers to support the rapid RL compute scaling effort.RoleDesign and implement scalable RL recipes for post-training task-specific modelsDevelop modular environments, reward functions, and evaluator scaffolds for internal and customer-facing tasksDrive research at the intersection of scalable infra and modern RL frameworks to enable RL-as-a-serviceDrive foundational research to publish open source environments and training dataBuild data generation and curation pipelines to support frontier post-trainingCollaborate with product teams to deliver a user friendly interface for non-technical users to generate dataQualificationsMasters or PhD in Computer Science or related fieldComfort with core tooling (verl, PyTorch, etc.)Familiarity with modern post-training techniques (GRPO, etc.)Experience with evaluations and reward engineeringPublished in top journals (ICLR, NeurIPS, ICML, etc.)To applySend your CV and a short note to founders@thellmdatacompany.comSeniority levelSeniority levelEntry levelEmployment typeEmployment typeFull-timeJob functionJob functionEngineering and Information TechnologyIndustriesSoftware DevelopmentReferrals increase your chances of interviewing at The LLM Data Company (YC X25) by 2xInferred from the description for this jobMedical insuranceVision insuranceGet notified about new Research Engineer jobs in San Francisco Bay Area.Research Scientist/Engineer, Mobile Manipulation - BehaviorsResearch Scientist, Latent State Inference for World ModelsResearch Scientist, World Models for Autonomous VehiclesSan Jose, CA $142,700.00-$257,600.00 1 week agoProcess Integration Technologist, R&D EngineeringSan Jose, CA $177,400.00-$236,500.00 6 days agoFremont, CA $110,000.00-$115,000.00 1 week agoMountain View, CA $138,225.00-$207,575.00 5 days agoSunnyvale, CA $213,000.00-$293,000.00 6 days agoResearch Scientist, World Models – Policy Training and EvaluationSan Francisco, CA $130,000.00-$145,000.00 6 days agoResearch Scientist, Molecular PharmacologyScientist / Sr. Scientist - Genetic Medicine R&DML Research Scientist, Foundation Models (Senior / Staff / Principal)San Jose, CA $182,900.00-$334,500.00 1 week agoResearch Scientist: LLMs for Robot NavigationSoftware Engineer, AI Platform - New GradMountain View, CA $145,000.00-$170,000.00 4 days agoSenior Research Scientist: Robotics SystemsWe’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr