Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Junior RL Environments Engineer for Frontier ML

Preference Model, Inc.

Preference Model, Inc. is looking for an entry-level engineer in San Francisco to work on building RL environments for frontier machine learning models. This role is perfect for new graduates eager to dive into exciting AI problems. Responsibilities include designing environments and collaborating on innovations. Ideal candidates should have strong ML foundations and proficiency in Python. Competitive compensation, health benefits, and ownership in a fast-paced startup await successful applicants. #J-18808-Ljbffr Preference Model, Inc.

Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the Junior RL Environments Engineer for Frontier ML in San Francisco, CA vacancy
  • $300k

     ...builds reinforcement learning environments that frontier AI labs use to train and...  ...judgment-heavy parts of software engineering. We build the environments...  ...design, build, and refine RL tasks. Each task is a self-contained...  ...cleverness No prior ML or AI experience required... 
    Junior

    Mechanize

    San Francisco, CA
    4 days ago
  • $310k

    About the Team The RL and Reasoning team drives the...  ...the Role As a Research Engineer/Research Scientist at...  ..., you will advance the frontier of AI alignment and capabilities...  ...technically complex environment where rapid iteration...  ...diving into a large ML codebase to debug and... 
    Suggested
    Work at office
    Relocation package

    Slope

    San Francisco, CA
    2 days ago
  • RippleMatch Inc. is seeking an innovative and motivated individual to design and refine reinforcement learning tasks in San Francisco. This role requires a strong command of Python and the ability to work independently with coding agents. Responsibilities include the full...
    Junior

    RippleMatch Inc.

    San Francisco, CA
    1 day ago
  • Preference Model, Inc. is seeking a Senior Software Engineer to design and develop RL environments that enhance AI models. This role involves working with complex tasks and mentoring newer engineers. Candidates should have deep software engineering experience, proficiency... 
    Suggested
    Visa sponsorship

    Preference Model, Inc.

    San Francisco, CA
    1 day ago
  • About Us Preference Model is building automated ML research engineering. Existing frontier models are brittle when applied to real-world ML tasks...  ...present bottleneck is the lack of high-quality RL training environments. Our first step is to build RL environments that reflect... 
    Suggested
    Visa sponsorship
    Relocation package

    Preference Model, Inc.

    San Francisco, CA
    1 day ago
  • Brainco in San Francisco is seeking an AI/ML Engineer to innovate and deploy advanced models addressing challenges in healthcare, government...  ...and TensorFlow. Join us to work with a dynamic team aimed at applying frontier AI solutions at scale. #J-18808-Ljbffr brainco
    Junior

    brainco

    San Francisco, CA
    17 hours ago
  • $200k

     ...technology company in San Francisco is seeking a Software Engineer for their RL Research & Environments team. The role focuses on designing and improving data...  ...background and experience in large-scale data or ML systems. Compensation ranges from $200K to $550K, along... 

    SupportFinity™

    San Francisco, CA
    4 days ago
  • $350k

    Research Engineer, RL Infrastructure and Reliability (Knowledge Work) Anthropic’s mission is...  ...The Knowledge Work team builds training environments and evaluations that make Claude effective...  .... Demonstrated experience operating ML or distributed systems at scale, including... 
    Visa sponsorship
    Shift work

    aijoblist

    San Francisco, CA
    2 days ago
  • A technology company specializing in AI is seeking interns to assist in creating reinforcement learning environments. The role requires strong Python coding skills and offers opportunities for internships in winter, spring, and summer 2026. No prior experience in machine... 
    Summer work
    Internship

    Mechanize, Inc.

    San Francisco, CA
    1 day ago
  • $174k - $252k

    Research Engineer, Frontier Safety Loss of Control, DeepMind DeepMind - San Francisco, CA, USA Qualified...  ...a frontier AI research and development environment. Experience working in a professional...  ..., especially those focused on ML Research and Development (R&D). Experience... 
    Full time

    Google Inc.

    San Francisco, CA
    17 hours ago
  • $300k

    Research Engineer, Agent Systems One of the most mission-driven organizations...  ...San Francisco · On-Site Frontier AI Lab · Confidential Highly...  ...you, you’ll find this environment unlike anywhere else.” The Work...  ...Observability Async Execution ML Pipelines What They’re... 
    Visa sponsorship

    Aionia Group

    San Francisco, CA
    1 day ago
  •  ...A company specializing in AI training data is seeking a Reinforcement Learning Environment Engineer to design and build MLE/SWE environments. This remote contractor position requires strong Python skills, hands-on LLM experience, and the ability to operate independently... 
    Full time
    For contractors
    Remote work

    Open Data Science

    San Francisco, CA
    2 days ago
  • $220k - $320k

     ...you love taking cutting-edge ML techniques and turning them into...  ...models for companies who want frontier-quality AI at a fraction of...  ...well-funded ten-person team of engineers who work in-person in downtown...  ...the latest techniques in SFT, RL, and model optimization to improve... 
    Work at office

    Inference

    San Francisco, CA
    4 days ago
  • $250k

     ...optimized specifically for AI. About the Role We're looking for a RTL Engineer to design and implement key compute, memory, and interconnect...  ...closely with architecture, verification, physical design, and ML engineers to translate AI workloads into efficient hardware... 
    Junior
    Work at office
    Relocation package

    Slope

    San Francisco, CA
    17 hours ago
  •  ...We're hiring a Research Engineer to advance the science...  ...instrumentation that turns environment design into a...  ...any one regime. Design frontier‑discriminating evaluations...  ...across post‑training, RL infrastructure, and product...  ...Have shipped real ML research repeatedly, with... 
    Visa sponsorship

    Nerdleveltech

    San Francisco, CA
    2 days ago
  • $320k

     ...group of committed researchers, engineers, policy experts, and business...  ...systems. About The Team The Frontier Red Team (FRT) is a small,...  ...tools and operate across diverse environments—creating model organisms that...  ...Designing and implementing RL environments for training... 
    Relocation
    Visa sponsorship

    Anthropic

    San Francisco, CA
    3 days ago
  •  ...talent network trains frontier AI models in the same way...  ...the Role As a Research Engineer at Mercor, you’ll work...  ...Ownership in a fast‑paced environment: Operate in a high‑...  ...hands‑on experience with ML models and evaluation...  ...generation, rubric design, or RL‑style workflows that... 
    Work at office

    Mercor

    San Francisco, CA
    2 days ago
  • Prime-Intellect is seeking a Research Engineer in San Francisco to shape the technological direction of their AI infrastructure. This role demands expertise in AI/ML engineering and the ability to lead research efforts in synthetic data generation. You will optimize AI... 
    Remote job
    Flexible hours

    Prime-Intellect

    San Francisco, CA
    4 days ago
  •  ...driven AI company in San Francisco is hiring a Research Engineer for its Cybersecurity RL team. This role involves advancing AI capabilities in secure...  ...from competitive compensation and a supportive work environment that values safety and collaboration. #J-18808-Ljbffr Menlo... 
    Flexible hours

    Menlo Ventures

    San Francisco, CA
    4 days ago
  • $320k

     ...committed researchers, engineers, policy experts, and business...  ...privacy analysis of frontier models, carefully...  ...features inside a fast-moving environment Strong coding skills in...  ...and familiarity with ML frameworks like PyTorch...  ...via fine-tuning and RL, running evaluations on... 
    Full time
    Work at office
    Visa sponsorship
    Flexible hours

    Menlo Ventures

    San Francisco, CA
    1 day ago
  •  ...Reinforcement Learning (RL) training data &...  ...data and evaluation for frontier AI agents. Their platform...  ...partner is hiring a Research Engineer to help scale the...  ..., tooling, and applied ML operations: you’ll build...  ...-ownership, fast-paced environment—this role is a strong fit... 
    Remote work

    talentpluto

    San Francisco, CA
    1 day ago
  •  ...superintelligence stack - from frontier agentic models to the...  ...and pair it with the full RL post-training stack: environments, secure sandboxes, verifiable...  ...contexts. As a Research Engineer in our Reasoning team, you...  ...latest advancements in AI/ML infrastructure and tools,... 
    Remote work
    Worldwide
    Visa sponsorship
    Relocation package
    Flexible hours

    Prime-Intellect

    San Francisco, CA
    4 days ago
  • $150k - $300k

     ...superintelligence stack - from frontier agentic models to the...  ...and pair it with the full rl post-training stack: environments, secure sandboxes, verifiable...  ...contexts. As a Research Engineer working on Distributed...  ...latest advancements in AI/ML infrastructure and tools,... 
    Remote work
    Worldwide
    Visa sponsorship
    Relocation package
    Flexible hours

    Prime-Intellect

    San Francisco, CA
    3 days ago
  • $200k

    A pioneering AI data solutions company in San Francisco seeks a SWE (Environments) to design datasets that influence how frontier models learn. You will collaborate with leading AI labs, exploring data strategies and developing metrics to assess model improvements. Ideal... 

    AfterQuery

    San Francisco, CA
    1 day ago
  • HeadHR is looking for candidates to design and build reinforcement learning environments for training large language models. You'll work with top AI labs to create environments where models face realistic challenges, implementing production-quality Python code in Docker... 
    Remote job

    HeadHR

    San Francisco, CA
    4 days ago
  • $350k

     ...committed researchers, engineers, policy experts, and business...  ...systems. About the RL Teams Our...  ...Anthropic's alignment and frontier red teams to ensure our...  ...design and implement RL environments and evaluations. Conduct...  ...ROCm, Triton, Pallas), ML framework programming (... 
    Work at office
    Visa sponsorship
    Flexible hours
    San Francisco, CA
    more than 2 months ago
  •  ...the first AI software engineer, and Windsurf, an AI-native...  ...researchers from the frontier of AI, including Scale...  ...sandboxes, from high-fidelity environment design to the...  ...hold up at our largest RL training scales. Performance...  ...to reproduce Enough ML knowledge to engage... 

    Cognition

    San Francisco, CA
    3 days ago
  •  ...the job AI / Machine Learning Junior / Senior / Lead...  ...demonstrated experience in AI, ML, and Data Science roles within...  ...Experience: From early-career engineers to senior ICs, leads and principals...  ...learning systems in production environments (not just academic or lab prototypes... 
    Junior
    H1b
    Visa sponsorship

    Catalyst Labs, LLC

    San Francisco, CA
    4 days ago
  • $150k - $230k

    EliseAI in San Francisco is seeking a junior research scientist to engage in groundbreaking...  ...responsibilities such as developing ML architectures and conducting analyses. With...  ...allows for growth within a vibrant startup environment. Benefits include full medical coverage,... 
    Junior

    EliseAI

    San Francisco, CA
    3 days ago
  • $55k - $88k

    The University of California - San Francisco seeks a Project Manager in Data Science to perform computational imaging and data analysis for life sciences. This role requires a Bachelor's or Master's degree with experience in research. Key responsibilities include designing...
    Junior

    University of California - San Francisco

    San Francisco, CA
    17 hours ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Junior RL Environments Engineer for Frontier ML. Be the first to apply!