Member Of Technical Staff Model Behavior Jobs in San Francisco, CA

You’ll work on context and prompt engineering to shape model behavior and style, and to guide how models use tools, skills, and memory across our products.

As a Member of Technical Staff on Models, you'll own the post-training loop that improves the performance of our AI Employees.

About the Role Perplexity is looking for a deeply technical software engineer to own and evolve our model serving platform

About the role We’re hiring a Founding Member of Technical Staff - Research to help advance the frontier of autonomous agents.

Familiarity with GPU programming models and memory hierarchies.

Strong ML fundamentals, covering areas such as engagement modeling, model calibration, offline and online metrics, and online experimentation.

THE ROLE As the Member of the Technical Staff, you are the "PM of the model," architecting the next generation of model reasoning

Contribute to architecture decisions, shared components, and engineering standards across the stack Design and optimize relational data models

You know how to optimize for the specific constraints of training large models while maintaining system reliability.

Role: Member of Technical Staff There is no hierarchy on the engineering team and everyone can work anywhere in the stack.

Step 2: Technical challenge (1–2 hours, on your own time) - A real engineering problem, not a LeetCode hazing ritual (unless you want to

Our stack spans kernels, model serving, routing, autoscaling, and capacity.

Areas you may work in: Agent infrastructure and code Product surfaces Evals and reliability Models