Junior Software Engineer - RL Environments for Frontier AI
RippleMatch
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 lifecycle of task development, from ideation to analysis of model performance. Ideal candidates are recent graduates with solid technical fundamentals and a knack for creative problem-solving. Benefits include health, dental, vision, and life insurance. #J-18808-Ljbffr
- A tech company specializing in AI model training in San Francisco is seeking a Software Engineer to design and build reinforcement learning tasks. You will oversee the full lifecycle of these tasks, from ideation to evaluation, focusing on meaningful capability gaps in...Suggested
$200k
...evaluation infrastructure that frontier AI labs use to make their models... ...improve. The Role As a SWE (Environments), you will design the... ...worked for/interned for any RL environment companies in the... ...results Former founders and early engineers at early stage startups are a...Suggested- ...Mechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their... ...complex, judgment-heavy parts of software engineering. We build the environments that... ...do You’ll design, build, and refine RL tasks. Each task is a self‑contained...Junior
- AI Talent Now in San Francisco is looking for an engineer to take ownership of projects that innovate AI evaluation techniques. You will design and build scalable... ...a variety of tasks, from prototyping new RL environments to enhancing existing systems, providing an exciting...Suggested
- Handshake is seeking a Senior Software Engineer to build the Reinforcement Learning Environments (RLE) platform. This role involves developing scalable systems for AI models and requires at least 6 years of experience in backend and distributed systems. Proficiency in...SuggestedFlexible hours
- ...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 workInternship
- ...Our Cyber team builds AI systems and products that... ...and reliability of frontier models in security-sensitive... ...works across product engineering, model training,... ...looking for research and software engineers to join... ...role if you: Enjoy 0-1 environments, can navigate ambiguity...
$255k
About the Team The Frontier Systems team at OpenAI builds... ...systems and build any software needed for running... ...Role We are looking for engineers to operate the next... ...-growth or hyperscale environments Bring strong programming... ...OpenAI OpenAI is an AI research and deployment...$184k - $259.44k
Software Engineer, Frontier AI Infrastructure San Francisco, CA; St. Louis, MO; New York, NY; Washington, DC Ready to Apply? Join the team shaping... ...tech debt, creating fully functional staging/testing environments that define the company's standard for safe deployments....Full timeWork at office3 days per week$310k
About the Team The Frontier Systems team at OpenAI builds... ...systems and build any software needed for running... ...the Role As a Software Engineer on the Frontier... ...supercomputing or model training environments). Knowledge of power... ...OpenAI OpenAI is an AI research and...- 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 braincoJunior
$400k
...Mechanize RL Engineer Mechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their coding models. Learn more at mechanize.work... ...at the complex, judgment-heavy parts of software engineering. We build the environments that...- ...excellence and continuous learning in an environment that values creativity and forward-... ...Accomplice, Gradient Ventures (Google’s AI Fund), BoxGroup, Village Global, and many... ..., Design, and other stakeholders within Engineering to maintain a high bar for quality in a...JuniorRemote workWorldwideFlexible hours
- ...AI/ML Engineer (RL & Physical Systems) FLUIX is building the AI Operating... ...twin and simulation environments to accelerate training, testing... ...publications. Push the frontier of physical-world AI, where... ...Collaborate with controls, software, and field engineering...Weekend work
$180k - $280k
...train specialized AI agents. We turn real... ...fidelity simulated environments that generate the training... ...— supporting frontier AI labs,... ...not a wrapper. Our engineers work at the core of the RL pipeline — building... ...usage. We already ship software that leading AI teams...Full timeRelocation package- ...Mechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their... ...complex, judgment-heavy parts of software engineering. We build the environments that... ...ll design, build, and quality-assure RL tasks. Each task is a self-contained...
- ...Founding Software Engineer As a Founding Software Engineer, you'll have end-to-end ownership over projects pushing the frontier of AI evaluation. This isn't a narrow role. One week you might prototype a new RL environment from a research paper, the next you'll deploy...Work at officeVisa sponsorship
- ...incorporate the advancements of AI into practical, real-world... ...thrive in flexible, creative environments, and want to work on meaningful... ...product minded Full Stack Engineers with high potential who want... ...demonstrated your capabilities as a software engineer by working on real...JuniorFlexible hours
$200k
...Our approach combines frontier-scale pre-training, domain-specific RL, ultra-long context, and... ...About the role As a Software Engineer at Magic, you will work... ...Data , RL Research & Environments , or Product ,... ...frontend workflows for AI-first experiences Improve...RelocationVisa sponsorship- ...Idler builds reinforcement learning environments that teach AI models to code like 0.01% engineers. Our training environments are... ...-world coding scenarios that frontier models will actually encounter.... ...scaleable systems that generate RL environments Create automated...Contract workRelocation package
$310k
About the Team The RL and Reasoning team drives the core reasoning... ...About the Role As a Research Engineer/Research Scientist at OpenAI, you will advance the frontier of AI alignment and capabilities... ...dynamic, and technically complex environment where rapid iteration is key....Work at officeRelocation package- ...States | Posted on 06/15/2026 AI Talent Now, LLC is a... ...leading organizations across IT, Engineering, Financial Services & Fintech... ...over projects that push the frontier of AI evaluation. This is not... ...you might prototype a new RL environment from a research paper, the next...
- ...Reinforcement Learning (RL) Gym project . You... ...researchers and engineers, and deliver high-... ...and simulation environments. Collaborate with... ...understanding of software engineering best practices... ...on cutting-edge AI projects with... ...accelerator for frontier AI labs and a trusted...Contract workFor contractorsRemote work
- ...career network for the AI economy. 20 million knowledge... ...We’re hiring a Senior Software Engineer to build our Reinforcement Learning Environments (RLE) platform—the interactive systems where frontier AI models learn to... ...Have Experience with RL training infrastructure...Full timeFreelanceInternshipWork at officeFlexible hours
- A tech-first company in San Francisco is looking for a Member of Technical Staff focused on frontier AI model development. The role involves designing experiments, developing training methods, and iterating on research ideas. Candidates should be excited about AI's impact...
$150k
About the role At Frontier AI & Robotics, we're not just advancing robotics... ...non‑internship professional software development experience, or a... ..., tech lead, or leading an engineering team. Expertise in Python,... ...transformer model optimization or RL framework development....InternshipLocal area- A leading AI company based in San Francisco is seeking a research systems engineer to train large language models and explore reinforcement learning techniques. The ideal candidate will work at the intersection of research and systems design experiments at scale. Benefits...
$220k - $405k
Perplexity is looking for experienced backend engineers to join our team specializing in... ...optimizing mission-critical APIs that power frontier intelligence for various customers. The... ...understanding of API design and cloud environments. Join us to reshape how people search...- ...research and product company defining the frontier of audio AI. Millions of people use our technology... ...do this across the whole company—from engineering to growth to operations. Excellence... .... Proficiency in Python and strong software development knowledge, inclusive of a...Immediate startRemote workWorldwide
- Job Title: ML Software Engineer About Xterra Xterra is a Khosla... ...company building AI agents that reason about... ...rare intersection of frontier AI and real-world scientific... ..., and the simulation environments where we test what's... ...with multimodal VLMs, RL fine‑tuning, and...
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Junior Software Engineer - RL Environments for Frontier AI. Be the first to apply!
- software sales engineer San Francisco, CA
- software engineer amazon San Francisco, CA
- software engineer student San Francisco, CA
- agile software developer San Francisco, CA
- rust software engineer San Francisco, CA
- software developer positions San Francisco, CA
- senior software design engineer San Francisco, CA
- software developer San Francisco, CA
- ngo software engineer San Francisco, CA
- startup software engineer San Francisco, CA


