Xai

Actively Hiring

Member Of Technical Staff

Palo Alto, USA

Full-time

Role Overview

The RL infrastructure team is looking for an engineer to help develop our evaluation infrastructure.

About Xai

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.

Key Responsibilities

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Built for the developer community.

Build highly reliable, efficient, and easy to use infrastructure that runs all our evaluations at scale

Collaborate closely with modeling & evaluation teams on developing new evals, maintaining evaluation signal quality, and building internal tooling to support training our next-generation of models

Identify and resolve performance bottlenecks in all layers of the eval infrastructure stack, including inference, capacity fleet management, asynchronous eval orchestration, and more

Requirements & Eligibility

Experience in building, debugging, and optimizing efficiency of large-scale distributed systems
Willingness to dive deep and solve hard problems at all levels of the stack
Experience in LLM inference
Experience in GPU compute management, workload scheduling, and dynamic resource optimization
Experience in developing interfaces for comparing models and evals

Required Skills & Tech

Distributed SystemsLLM inferenceGPU compute managementWorkload schedulingDynamic resource optimization

Ready to apply?

Take the next step and submit your application.

Role Highlights

Posted Date

1 Oct 2026

Salary

$180,000 - $440,000 USD

Experience

Fresher