xAI
Machine Learning Engineer - Ads
About this role
Join SpaceXAI's ads team to integrate Grok AI models across the advertising platform, from candidate selection through ranking and auction optimization. This role requires hands-on engineering expertise in large-scale, high-throughput advertising systems and offers the opportunity to directly impact revenue-driving products.
What you'll do
- Integrate Grok models across advertising stack stages including candidate selection, ranking, and auction systems
- Optimize campaign performance and advertiser experience using advanced AI capabilities
- Own and operate critical advertising systems that drive significant company revenue
- Implement AI-powered creative generation and campaign optimization features
- Develop prediction and marketplace systems at massive scale
What they're looking for
- Machine learning and AI model integration
- Large-scale advertising systems design
- Ranking and auction algorithm optimization
- High-throughput system architecture
- Bidding and marketplace optimization
- Python or similar ML engineering languages
- Product thinking and revenue impact analysis
Benefits
- Equity compensation
- Comprehensive medical, vision, and dental coverage
- 401(k) retirement plan
- Short and long-term disability insurance
- Life insurance
- Various discounts and perks
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xAI
xAI builds advanced AI infrastructure and systems, including the Grok model inference platform and Colossus GPU cluster. The company is hiring Mechanical, Electrical, and Facilities Engineers to design and maintain its data center operations, as well as Software Engineers to optimize high-performance inference systems and datacenter networking.
View all jobs at xAILikely interview questions
- Walk us through a large-scale advertising product you built—what were the key technical and business trade-offs?
- How have you optimized ranking or auction systems for both user experience and revenue?