xAI
Software Engineer - X Money
About this role
Join SpaceXAI's X Money team to build backend infrastructure for a revolutionary global payment network serving 600+ million users. You'll design scalable microservices, develop APIs, and collaborate cross-functionally on payments, fraud detection, and financial products in a fast-paced, startup-like environment.
What you'll do
- Develop backend services, APIs, and data models for high-volume, multi-user payment environments
- Design robust microservices architecture for payments, transactions, and monetization across platforms
- Collaborate with iOS, Android, and Web engineers to ship integrated products
- Build full-stack features including dashboards, real-time analytics, and personalized experiences
- Lead architectural decisions for high-concurrency, low-latency systems at scale
- Ensure engineering excellence through testing, monitoring, deployment, and secure data handling
What they're looking for
- Distributed systems design and optimization
- Backend development in Rust, Go, Python, or Java
- High-volume streaming systems
- Microservices architecture
- API design and development
- Payment systems and financial infrastructure
- Database design and optimization
- System reliability and scalability
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
- Describe your experience designing microservices for high-concurrency, low-latency systems. What challenges did you face and how did you solve them?
- Walk us through how you would architect a payment processing system to handle millions of concurrent transactions while maintaining strong consistency guarantees.