xAI

Backend Engineer responsible for building and owning the xAI API that serves models to developers worldwide. This includes end-to-end system ownership for high-throughput, low-latency, and highly available inference, covering model serving infrastructure, request routing, SDK development, rate limiting, observability, and scaling. Requires expertise in Rust or C++, distributed systems, and observability, with preferred experience in LLM inference engines, serving frameworks, and agent orchestration.

The Sandbox service team at xAI builds and maintains a secure, scalable system that gives AI models safe, controlled access to computational environments. This infrastructure powers critical workloads across training and product, enabling models to run code, build software, interact with tools, and control applications. The role involves provisioning containers and virtual machines on large-scale clusters, granting models interactive control over these remote environments, and spans full-stack development from job orchestration and resource scheduling to filesystem performance tuning. It supports real-time code execution for products like Grok and reinforcement learning in training where models explore various tools.

Seeking an exceptional iOS engineer to join a small, high-impact team dedicated to creating the world’s most valuable AI application, judged by the impact it delivers to users. You’ll shape cutting-edge mobile experiences, blending technical mastery with product brilliance.

Backend Engineer responsible for production systems powering the API, focusing on scalable and reliable distributed systems. Requires expertise in Rust/C++, distributed systems design, observability, and databases. Familiarity with LLM APIs, embeddings, or RAG patterns is preferred.

xAI is seeking a Developer Experience Engineer to enhance the accessibility and usability of their AI tools and APIs, specifically Grok and other models. The role involves contributing to open-source SDKs, writing documentation, engaging with the developer community, and creating examples and tutorials. The goal is to accelerate adoption and improve the developer experience in the rapidly evolving AI landscape.

Software Engineer for xAI's X Money team, focused on building a global payment network. Responsibilities include backend microservices development, supporting full-stack efforts, and collaborating on payments, fraud detection, and compliance. The role emphasizes scalability, security, and reliability in a fast-paced, startup-like environment at the intersection of AI and finance.

Seeking an exceptional Android engineer to join a small, high-impact team dedicated to creating the world's most valuable AI application, judged by the impact it delivers to users. You'll shape cutting-edge mobile experiences, blending technical mastery with a keen product sense to deliver brilliance that resonates with users. You will work on the most critical product or technical challenge at any given time.

Software Engineer at xAI focused on critical product or technical challenges, contributing directly to the company's mission of creating AI systems to understand the universe and aid humanity. Requires exceptional software engineering skills and a belief in truth-seeking AI.

Site Reliability Engineer responsible for backend services powering products like grok.com and the API, focusing on highly scalable and reliable services hosted on Kubernetes clusters.