# Sr. Machine Learning Engineer, Recommendation Systems Source: https://realanalystjobs.com/job/sr-machine-learning-engineer-recommendation-systems-xai-ce978cb5 Sr. Machine Learning Engineer, Recommendation Systems at xAI, an on-site role based in Palo Alto, California, USA. Experience level: 5+ Years. Pay stated in the posting: $180,000 to $330,000. Posted on 10 April 2025, read from xAI's own careers page (Greenhouse), which RealAnalystJobs re-checks daily and removes the role when it closes. xAI has approved H-1B petitions on USCIS record (employer-wide, not a promise for this role). Updated 15 November 2026. ## Key facts - Company: [xAI](https://realanalystjobs.com/companies/xai) - Location: Palo Alto, California, USA - Work mode: On-site - Pay stated in the posting: $180,000 to $330,000 - Posted: Apr 10, 2025 - Employment type: Full time - Experience level: 5+ Years - Source: xAI's careers page (Greenhouse), re-checked daily Skills: Spark ## Visa sponsorship The posting does not say. xAI had H-1B petitions approved for 112 workers in fiscal year 2026 (USCIS). That is history, not a promise for this role. [See the record](https://realanalystjobs.com/companies/xai#h1b-record) ## About this role 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. 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'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. SR. MACHINE LEARNING ENGINEER, RECOMMENDATION SYSTEMS We’re seeking exceptional engineers to join a high-priority project that approximately 600 million monthly users use. This is an exciting opportunity for individuals with a engineer or scientist background to apply their skills to recommendation systems, ranking algorithms, search technologies, and many other systems. You’ll work at the intersection of advanced AI development and real-world impact, enhancing the ability to connect users with relevant content, accounts, and experiences. RESPONSIBILITIES: • Designing and architecting recommendation algorithms across various product surfaces • Leverage all of SpaceXSI's infra and AI stacks to dramatically enhance the user experience • Write data pipelines and training jobs that continuously learn from product data • Iterate and improve the algorithm by gathering user feedback in real time through experimentation • Ensuring scalability and efficiency of machine learning systems BASIC QUALIFICATIONS: • 5+ years of industry experience in implementing recommender systems and/or deep learning applications at industrial scale PREFERRED SKILLS AND EXPERIENCE: • Experience in writing CUDA kernels • Skilled in one or more DL software frameworks such as JAX or PyTorch • Knowledge of data infrastructure like Kafka, Clickhouse, and Spark COMPENSATION AND BENEFITS: $180,000 - $330,000 USD Base salary is just one part of our total rewards package at SpaceXSI , 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. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice . Description from xAI's public careers feed, reproduced so you can read the role here. Apply on the company's own site; Real Analyst Jobs never submits anything for you. ## How to apply Open [this role on Real Analyst Jobs](https://realanalystjobs.com/job/sr-machine-learning-engineer-recommendation-systems-xai-ce978cb5) and use Apply now there to reach the employer's application. The listing is re-checked against xAI's careers page daily and removed when it closes. ## xAI 9 open analyst roles on Real Analyst Jobs. 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