Post-Training Research Engineer: RLHF, Evaluation & Stats
present of AI
Cognition in San Francisco is seeking a leader for the post-training loop of coding agents, responsible for building training recipes, designing evals, and diagnosing why results look strange. The role requires depth in preference learning and reward methods such as RLHF, plus solid statistics to tell true effects from noise. The ideal candidate has trained large models across many GPUs and has published or open-source ML work. Priorities may shift quickly, demanding clear judgment. #J-18808-Ljbffr
- ...Research Engineer, Post-Training Model Evaluations Investigate model quality during production post-training, maintain evaluation coverage and explain regressions to research teams. Vacancy announcement Who this suits: Individual qualified applicant Accepting...TrainingWork at office
- ...compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into one... ...full-stack system for post-training at frontier scale... ...tasks like autonomous research, and the full-stack... ...Requirements Strong software engineering skills in Python and...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
- ...daily U.S. X-rays. Our research team brings experience... ...exceptional Research Engineer or Research Scientist... ...we curate data and evaluate frontier AI models for... ...determine the quality of our training data and how we... ...foundation models, VLMs, and post-training methods. This...Training
$231k - $340k
...started. Role Overview Post-training is how Harvey turns expert... ...work. We are looking for a research engineer who can help scale that... ...that are reliable enough for evaluation, efficient enough for iteration... ..., preference optimization, RLHF/RLAIF, reward modeling,...Training- ...foundation for agent engineering in the real world, helping... ...for building, evaluating, deploying, and operating... ...for an experienced research engineer to help make... ...selection, fine-tuning and post-training custom models. The... ...optimization, SFT, RLHF/RLAIF, or other post-...TrainingWork at officeFlexible hours
- ...Research Engineer Intern, Evaluations & BenchmarksLocation: San Francisco (Hybrid)TensorStax is building fully autonomous AI systems to manage and optimize... ...evaluation methodologies, reinforcement learning, and RLHF techniques.Familiarity with benchmarking language models...Internship
- ...Applied Research EngineerThe next wave of competitive... ...AI systems trained on proprietary... ...Applied Research Engineer, you'll design, train... ...design to training, evaluation, and iteration in... ...models: Fine-tune and post-train models on... ...training such as RLHF or RLAIF, or evaluation...Training
- ...automation for high-quality training data at scale. Expert... ...Excellence: Join a team of top researchers and engineers passionate about ethical AI... ...with human intent using RLHF, DPO, and related approaches... ...tools for collecting, evaluating, and optimizing human feedback...TrainingFlexible hours
$150k - $200k
...benchmarks those labs use to train and test their models. You'd be their first engineer in San Francisco, and... ...actually got better Post-training experiments,... ..., tasks, benchmarks or evaluation harnesses with your own... ...(SFT, DPO, GRPO, RLHF or similar), ideally with...TrainingFull timeWork at office- ...Research Engineer – Reinforcement LearningLocation: San Francisco (Hybrid)TensorStax... ...supervised fine-tuning (SFT) and RLHF.Design experiments to evaluate and improve the agentic capabilities... ...Points:Experience with distributed training in PyTorch (DDP, FSDP).Hands-on experience...Training
- ...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 sandboxed execution... ...post-training infrastructure (RLHF, Direct Preference Optimization, Process...TrainingWork at office
$165k - $310k
...Senior Research Engineer, LLM Training & Post-Training New York, New York, United States; Remote; San Francisco... ...models are trained, fine‑tuned, evaluated, and deployed across Lightning AI’s... ...such as continued pretraining, SFT, RLHF, preference optimization (DPO, PPO,...TrainingFor contractorsFor subcontractorWork at officeRemote workWork from homeFlexible hours2 days per week- ...team includes ex-founders and engineers who have built and scaled... ...We are hiring a Founding Research Engineer to design, prototype... ...: dataset curation, model training and evaluation, retrieval and tool use, safety... ..., and NCPDP Background in RLHF or RLAIF, distillation,...Training
$189.6k - $237k
...large language model training and inference. The... ...powering MLEs, researchers, data scientists and... ...training and evaluation of LLM's, as well... ...systemsStrong software engineering skills, proficient... ...expertise in post-training methods &... ...instruction tuning, RLHF, tool use, reasoning...TrainingFull time$250k - $350k
...combining rigorous evaluation with full-stack... ...paired with applied ML research, design, and... ...Learning Research Engineer, you will operate... .... This could mean training and fine-tuning models... ...fine-tuning (SFT, RLHF/RLAIF, reward modeling... ...on each job posting reflects the minimum...TrainingFull time- ...is the world’s leading research accelerator for... ...quality data, advanced training pipelines, plus top AI... ...environments that power post-training for leading AI... ...enterprises. Our environments evaluate and improve AI models... ...includes: Software engineering environments for...TrainingContract workPart timeFor contractors
$1,000 per month
...micro1 is the leading AI data lab for training frontier models and evaluating AI agents. Experts contribute... ...such as finance, healthcare, STEM engineering, and more. micro1 transforms that... ...layer for frontier AI. Role Title: Research Engineer - Code Generation & Model...TrainingPart timeFor contractorsRemote work$150k - $250k
...global social organizations.We research and deploy technologies that... ...ForAt Distyl, Research Engineers build the bridge between frontier... ...system behavior, build evaluation frameworks, and collaborate... ...ResponsibilitiesDesign and run post-training workflows that improve the behavior...TrainingWork at office3 days per week$193.3k - $261.5k
...of this team, you will lead research and development efforts in generative... ...and deep collaboration with engineering teams to bring research into... ...data collection/annotation/evaluation web applications.* Expedite... ...transformer architecture, training/inference lifecycles, and...TrainingInternshipLocal areaFlexible hours- ...Workspace.Sierra’s Applied Research team advances the quality, speed... ...of tasks. Our work spans post-training open-weight models for specialized... ....Develop, fine-tune, evaluate, and deploy models that improve... ...timeLocation TypeOn-siteDepartmentEngineeringPlatform EngineeringTrainingFull timeFlexible hours
- ...compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into one... ...full-stack system for post-training at frontier scale... ...tasks like autonomous research, and the full-stack... ..., working with systems engineers on hardware-aware execution...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours
$150k - $350k
...compute, environments, evaluations, secure sandboxes, high-performance training, and deployment into one... ...full-stack system for post-training at frontier scale... ...tasks like autonomous research, and the full-stack... ...researchers and infrastructure engineers to translate...TrainingRemote workVisa sponsorshipRelocation packageFlexible hours$197.3k - $313.7k
...software and platform engineers to embed in our AI team... ...enable world-class research and products used by millions... ...APIs, UIs, agentic evaluators, and more.Roll out... ...tools and opt out options.Posting StatementSalesforce is... ...promotion, benefits, training, assessment of job...TrainingFull time- ...ML/AI Research Engineer — Agentic AI Lab (Founding Team) Location: San Francisco Bay Area... ...join our AI Lab and lead the design, training, evaluation, and optimization of agent-native AI... ...pipelines to optimize agent behaviors (e.g. RLHF, DPO, PPO) Establish scalable...TrainingFull time
$136.44k - $265.11k
...our work here.You’ll build the datasets, evaluations, and systems that help close that gap.... ...work at the intersection of software engineering, biology, and frontier AI: finding tasks... ...with engineers, scientists, and external research partners.Desire to work in a fast-paced...Work at officeLocal areaMonday to FridayShift work- ...About the Role As a Research Engineer, you’ll be responsible for building... ...and roadmaps Train, fine-tune, validate, and further... ...by our customers Design evaluation protocols and benchmarks that... ...~ Prior experience post-training and deploying LLMs...TrainingWork at officeFlexible hours
$250k
...: Transluce is a non‑profit research lab building tools for scalable... ...set industry standards for evaluation. Our tools are integrated with... ...for strong scientists and engineers to help advance our vision of... ...responsibility: Help us develop and train scalable interpretability...TrainingWork at officeVisa sponsorship- ...Pantograph is training general models that start by watching internet-scale video and... ...durable robots. We're looking for a research engineer to help us train increasingly capable... ...reinforcement learning, data processing, evaluation, and the infrastructure required to...Training
- ...the Team The Privacy Engineering Team at OpenAI is... ...functional engineering and research partners with the... ...Develop internal libraries, evaluation suites, and... ...insights that inform model‑training and product‑safety decisions... ...dataset curation to post‑deployment monitoring....TrainingRelocation package
- ...Phonic Phonic is a product and research lab focused on powering the... ...The Role As a Research Engineer at Phonic, you'll sit at the... ...genuinely human. You'll design, train, and iterate on models across... ...the training pipelines, evaluation frameworks, and tooling that...TrainingWork at office
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