Research Engineer: RL & Post-Training LLM Systems
Preference Model
Preference Model is seeking Research Engineers or Research Scientists to advance self-directed learning in AI. The role involves training and evaluating models within proprietary RL environments and optimizing ML infrastructure. Candidates will benefit from competitive compensation, ownership in a fast-paced startup, and support for personal growth. Experience in Python, PyTorch, or JAX, along with RL training frameworks, is desired. The opportunity is a unique blend of research and engineering within a dynamic team. #J-18808-Ljbffr Preference Model
- Anthropic is seeking a Research Engineer for the Code RL team in San Francisco. This role involves designing RL environments, running training experiments, and improving model training pipelines... ...a commitment to building safe AI systems. The ideal candidate will balance...Training
$200k
...experienced professional to design and implement LLM-based Agent architectures for... ...Responsibilities include developing sophisticated training pipelines and building realistic training... ..., and a deep understanding of Agent systems. Compensation ranges from $200,000 to $50...Training$350k
...We are scientists, engineers, and builders who’ve... ...an infrastructure research engineer to design and build the core systems that enable scalable, efficient training of large models through... ...algorithms behind RL and the realities... ...that we put up postings for singular roles...TrainingLocal areaImmediate startVisa sponsorshipWork visaRelocation package$350k
# Research Engineer, Performance RLDepartment: EngineeringJob... ...interpretable, and steerable AI systems. We want AI to be safe... ...AI systems.About the RL TeamsOur Reinforcement... ...RL infrastructure and training methodologiesEnhancing... ....Familiarity with LLM training methodologies...TrainingWork at officeVisa sponsorshipFlexible hours- ...and steerable AI systems that are safe and... ...society. About the RL Teams The... ...Pioneering fundamental RL research for large... ...infrastructure and training methodologies Enhancing... ...a Research Engineer for the Code RL team... ...learning, RLHF, post‑training, or LLM finetuning....TrainingWork at officeVisa sponsorship
- ...interpretable, and steerable AI systems. We want AI to be... ...group of committed researchers, engineers, policy experts, and... ...systems. About the RL Teams Our... ...infrastructure and training methodologies Enhancing... ...reinforcement learning, RLHF, post‑training, or LLM finetuning...Training
$300k - $405k
...hiring for the Cybersecurity RL team within Horizons. As a Research Engineer, you'll help to safely... ...work into production training runs, and collaborating with... ...how AI could help harden systems at scale, or a detection... ...environments. Familiarity with LLM training methodologies....TrainingFull timeWork at officeVisa sponsorshipFlexible hours$300k - $405k
...interpretable, and steerable AI systems. We want AI to be safe... ...group of committed researchers, engineers, policy experts, and... ...learning (RL) research and development... ...work into production training runs, and collaborating... ...environments. Familiarity with LLM training methodologies...TrainingFull timeFor contractorsWork at officeVisa sponsorshipFlexible hours$350k
Thinking Machines in San Francisco is seeking an infrastructure research engineer to design and build scalable systems for training large models using reinforcement learning. This role combines research and engineering, requiring strong collaborative skills and coding expertise...Training- ...DeepMind, xAI, Microsoft Research, etc.), where we built large-scale training infrastructure powering trillion... ...Scientist (Efficient ML Systems) at Goaly, you will... ...shape how modern LLMs and RL systems are trained and... ...techniques that improve LLM and agentic RL training and...TrainingFull timeWork at office
- Anthropic in San Francisco is looking for a Research Engineer to enhance AI systems by advancing their coding abilities—encompassing... ...and debugging real software. You will design RL tasks and develop reward signals, run training experiments, and play a pivotal role in...Training
- ...preclinical datasets for model training, evaluation, and... ...About the Role As an RL Engineer at BioStack, you will... ...layer for medical AI systems. We source high-value... ...making, and biomedical research tasks. We’re looking... ...learning, language model post-training, agent...TrainingContract work
$250k - $350k
...the world’s leading research accelerator for... ...deploy advanced AI systems. Turing accelerates... ...specialized talent, and training pipelines that... ...reinforcement learning (RL) environments that power post‑training for the... ...Environments for Software Engineering / coding agents...Training$250k - $350k
...is the world’s leading research accelerator for... ...to deploy advanced AI systems. Turing accelerates frontier... ...specialized talent, and training pipelines that advance... ...a Principal Research Engineer - RL to own the end‑to‑end... ...goals. Evaluations & Post‑training: Demonstrate...TrainingFlexible hours- ...large language model training and inference. The... ...powering MLEs, researchers, data scientists and... ...and evaluation of LLM's, as well as... ...to optimize our ML system Ideally you’d have... ...Strong software engineering skills, proficient... ...Demonstrated expertise in post-training methods &...Training
$189.6k - $237k
...large language model training and inference. The... ...powering MLEs, researchers, data scientists and... ...and evaluation of LLM's, as well as... ...to optimize our ML system Ideally you'd have... ...Strong software engineering skills, proficient... ...Demonstrated expertise in post‑training methods &...TrainingFull time- Tykhe Inc in San Francisco, CA is seeking a Research Engineer who will be responsible for designing experiments and building task generation systems. You will work on generating realistic curricula and transforming research prototypes into reliable systems. The ideal candidate...
- Black Forest Labs is recruiting a Member of Technical Staff - Research Engineer to own and optimize large-scale generative-model training systems in a hybrid SF/remote setting. You’ll work closely with researchers to push performance, memory footprint, and stability across...TrainingRemote work
- XOR is seeking Research Engineers or Research Scientists in San Francisco to enhance AI capabilities through... ...research and engineering. You will train models, optimize infrastructure, and develop methodologies for RL agents. This role emphasizes hands-on engineering...Training
- ...loops to steer our training, safety, and... ...seek exceptional research engineers that can push the... ...Create ambitious RL environments to push... ...Design scalable systems and processes to support... ...observability and monitoring, LLM‑enabled... ...believe this job posting is non‑compliant,...Training
$200k - $290k
Research Engineer, Post-Training Inference About the role The Model Shaping team at Together... ...processing, and ML systems. As a Research Engineer within... ...the inference engine for RL training workloads. You will... ...SGLang, vLLM, and TensorRT‑LLM Are familiar with the latest...TrainingFull time- ...product — building the training infrastructure, reward... ..., and fine-tuning systems that make our models meaningfully... ...isn't theoretical RL research. You'll build your own... ...approaches and modern LLM agent systems. If you... ...into language that engineers, product people, and leadership...Training
$180k - $290k
Research Engineer — Search/IR You'll own the search and information retrieval systems at the core of Firecrawl — the infrastructure... ...convert URLs into LLM-ready markdown or structured... ...directly with the RL-focused Research... ...improvements with model training and the broader...TrainingFull timeRemote work$275k - $315k
...We are partnering with researchers, engineers, and organizations who... ...learning systems that guide our compiler... ...Design and implement RL‑based systems for compiler... ...reward models and the training infrastructure for our... ...Experience building LLM agents, tool use, or other...TrainingFull timeWork at officeRelocation package$295k
About the TeamThe RL and Reasoning team drives the... ...reinforcement learning research, building next-... ...the RoleAs a Research Engineer/Research Scientist at OpenAI... ...will sit at the heart of training intelligent, aligned, and... ...agents, including the systems that power various models...TrainingWork at officeRelocation package- ...hire exceptional ML, RL, and AI engineering talent. About Our Client... ...on next-generation training systems for large language... ..., and is looking for Research Engineers or Research... ...push the frontier of post-training on large language... ...running end-to-end LLM post-training...Training
$200k
We ( build LLM-based Agents for personalized content generation... ...role focuses on designing, training, and deploying Agent systems with strong memory,... ...comfortable owning problems from research through production... ...building executable Agent RL environments or user simulation...Training- BioStack is seeking a Reinforcement Learning Engineer for a 6-month contract in San Francisco. The role involves designing and developing reinforcement learning systems for healthcare AI, with responsibilities including evaluating clinical datasets and creating model-ready...Contract work
$300k - $405k
A leading AI research firm in San Francisco seeks a Research Engineer for the Cybersecurity RL team. You will advance AI capabilities in secure coding and vulnerability remediation, requiring both research and engineering skills. Ideal candidates have experience in cybersecurity...Work at office$350k
Thinking Machines Lab, located in San Francisco, is seeking an Infrastructure Research Engineer to design and optimize distributed training systems that enable efficient training of large models. The ideal candidate will possess strong engineering skills and a background...Training
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