About the Role
As our Member of Technical Staff focused on ML infrastructure, you’ll design and scale the platforms that power cutting-edge AI: from high-performance inference engines to the underlying agent technologies and large-scale compute clusters that keep everything running.
You’ll collaborate closely with researchers and product engineers to push the limits of inference performance, build reliable foundations for AI agents, and advance the next generation of training and post-training pipelines.
Responsibilities
Speed up research development, help researchers explore SOTA and new techniques on day one
Build and optimize model training pipeline including data collection, data loading, SFT and RL
Optimize a high-performance inference platform on top of both open-source and proprietary inference engines
Develop and scale technologies for large-scale cluster scheduling, high-performance distributed training, and AI networking
Build a strong engineering discipline across observability and reliability at scale
Collaborate with research and product teams to translate breakthroughs into robust, production-ready infrastructure
Qualifications
Expertise in one or more of: inference engines, GPU optimization, cluster scheduling, or cloud-native infra
Familiarity with modern ML frameworks (PyTorch, vLLM, Verl, etc.)
Startup-ready mindset (adaptable, fast-moving, high-ownership)
What makes us interesting
Small, elite team of ex-founders, researchers from top AI Labs, top CS grads, and engineers from top companies
True ownership You will not be blocked by bureaucracy, shipping meaningful work within weeks rather than months
Serious momentum We're well-funded by top investors, moving fast, and focused on execution
What we do
Ship consumer products powered by cutting-edge AI research, and
Build infrastructure that facilitates research and product, and
Innovate cutting-edge research that will open up new consumer product forms
The Details
Full-time, onsite role in Menlo Park
Startup hours apply
Generous salary, with additional benefits to be discussed during the hiring process
Top Skills
What We Do
Fundamental Research Labs is building digital humans—machines with the capacity to learn, care, and grow alongside us.
We're an applied research company building autonomous, collaborative, and socially intelligent agents. Our small team includes computational neuroscientists, AI researchers, engineers, and builders from MIT EECS, Stanford NLP Group, Google X, Citadel, and beyond.
Our research prototypes began with multi-agent experiments in games like Minecraft and Roblox, where over a million people have interacted with our agents. Today, we're bringing those agents out of the sandbox and into the real world—starting with your computer.
