Senior Backend Engineer — Global Payments & AI (Equity)

SpaceX Super Intelligence; Palo Alto (CA); On-site; USD 180,000 - 440,000; Full time

Benefits offered by this job

Equity

Health benefits

401(k) plan

Disability & life insurance

Job summary

SpaceXSI is building a revolutionary global payments network to serve over 600 million users and rival large financial institutions. As a Software Engineer on the X Money team, you will design scalable backend services and robust microservices, collaborating with cross-functional teams on payments, fraud detection, and compliance initiatives.

You will work on greenfield projects in a startup-like environment, shaping the platform at the intersection of AI and finance.

Qualifications

• 2+ years of experience working on large scale consumer applications.

Responsibilities

• Develop backend services, APIs, and data models to support high-volume, multi-user environments.
• Work with iOS, Android & Web client engineers to ship products.
• Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement across platforms.
• Build and maintain fullstack features, including user dashboards, personalized experiences, content delivery, interactive tools, assessments, and real-time analytics.
• Lead architecture, scalability, and reliability decisions for high-concurrency, low-latency systems.
• Uphold engineering excellence via testing, monitoring, deployment, and secure data handling.

Tools

Rust

Go

Python

Java

Job description

SpaceXSI is building a revolutionary global payments network to serve over 600 million users and rival large financial institutions. As a Software Engineer on the X Money team, you will design scalable backend services and robust microservices, collaborating with cross-functional teams on payments, fraud detection, and compliance initiatives.

You will work on greenfield projects in a startup-like environment, shaping the platform at the intersection of AI and finance.