Sr. Software Engineer, X Money

SR. SOFTWARE ENGINEER, X MONEY

We are seeking a talented Software Engineer to join our X Money team, focused on building a revolutionary global payment network that will serve over 600 million users and rival the world’s largest financial institutions. In this role, you will specialize in backend development, designing and optimizing robust microservices to ensure scalability, security, and reliability. You will support full-stack efforts, collaborate with cross-functional teams on payments, fraud detection, and compliance initiatives, and contribute to the creation of a high-scale financial products platform.

This is an opportunity to work on greenfield projects in a fast-paced, startup-like environment, driving innovation at the intersection of AI and finance.

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

BASIC QUALIFICATIONS:

• 5+ years of experience working on large scale consumer applications or early-mid stage startup experience as a founding engineer, emphasizing rapid prototyping, user-centric design, and AI solutions

PREFERRED SKILLS AND EXPERIENCE:

• Experience with high-volume streaming systems
• Experience with distributed systems for high-scale, low-latency environments
• Experience with Rust, Go, Python, or Java

COMPENSATION AND BENEFITS:

£107,000 - £262,000 GBP

Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive healthcare and dental coverage, cash plan, income protection, life insurance, and various other discounts and perks.