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Sr. Backend Engineer, API

Xai

London
Engineering
Publié le 14 novembre 2026

Description du poste

<div class=&quot;content-intro&quot;><p>SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.<br><br>SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We&#39;re creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.</p></div><h4><strong>SR. BACKEND ENGINEER, API</strong></h4> <p>We are looking for Backend Engineers to help build and operate highly scalable, reliable production infrastructure. Most of our backend infrastructure is written in Rust. Experience with a compiled language such as Rust, C++, or Go is highly beneficial.</p> <h4><strong>RESPONSIBILITIES:</strong></h4> <ul> <li>Build and maintain the unified inference stack as the single surface area for all inference needs across the company</li> <li>Own and evolve the platform services that power Chat API, Imagine API, Voice API, Grok Build, and Grok Bot</li> <li>Design, build, and maintain