Software Engineer - Search Infrastructure

Xai · Palo Alto, CA · Engineering

Posted 2026-09-10

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ABOUT THE ROLE:

As a backend engineer, you’ll design and build scalable, high-performance systems that power subscriptions infrastructure, new monetized products, user growth, and creator monetization. You’ll work on mission-critical infrastructure that processes millions of transactions, optimizes user acquisition and retention, and enables creators to earn a living through their content. This is a unique opportunity to make a large-scale revenue impact while creating products that users and businesses love.

RESPONSIBILITIES:

Design and build large scale search infrastructure (real-time indexing, serving, and data pipelines) that handles massive write and query loads with strict latency and reliability requirements

Go deep into search internals (indexing, query execution, and relevance) and help shape the technical direction of the core search infrastructure

Operate production services end to end, including monitoring, debugging, incident response, and performance optimization

Lead and drive incident responses and recovery with your peers. Review and contribute to incident postmortems and hold a high bar for the same

BASIC QUALIFICATIONS:

5+ years developing large-scale infrastructure, distributed systems  or experience with storage or hardware architecture.

Proficient in high performance Rust, C++  or JVM-based languages

Hands-on experience with search and indexing technologies (Elasticsearch, Lucene, or similar) and an understanding of how they work and why

Experience with operating system internals, filesystems, networking, or database storage engines

Obsessed performance, reliability, scalability and quality

Ability to take full ownership of problems and learn whatever is needed to solve them

Comfortable moving quickly in a fast-paced environment with shifting priorities and tight deadlines

PREFERRED SKILLS AND EXPERIENCE:

Contributions to open-source search or infrastructure projects

COMPENSATION AND BENEFITS

$150,000 - $400,000 USD

Base salary is just one part of our total rewards package at xAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.

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