# Software Engineer - X Money

**Company:** [xAI](https://hotfix.jobs/companies/xai)
**Location:** London, United Kingdom
**Role:** Backend Engineering
**Salary:** £107k – £262k/yr
**Experience:** 5+ years
**Skills:** Rust, Go, Python, Java, Distributed Systems, Streaming Systems, Microservices, Backend Development, APIs, Data Modeling, iOS, Android, Real-Time Analytics, Payment Systems, Fraud Detection
**Posted:** 2026-09-02

> Build scalable backend services and payment infrastructure for a global financial products platform. The role requires distributed-systems expertise, proficiency in modern programming languages, and experience with large-scale consumer applications.

## Job Description

## Responsibilities
- Develop backend services, APIs, and data models for high-volume, multi-user environments.
- Collaborate with iOS, Android, and web client engineers to ship products.
- Design infrastructure and microservices for payments, transactions, growth, monetization, and engagement across platforms.
- Build and maintain full-stack features, including 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 through testing, monitoring, deployment, and secure data handling.

## Requirements
- Proficiency with distributed systems for high-scale, low-latency environments.
- Experience with Rust, Go, Python, or Java.
- Experience with high-volume streaming systems.
- At least 2 years of experience working on large-scale consumer applications.

## Nice-to-haves
- At least 5 years of experience working on large-scale consumer applications.
- Early- to mid-stage startup experience as a founding engineer.
- Experience with rapid prototyping, user-centric design, and AI solutions.

## Compensation and Benefits
- Base salary: £107,000–£262,000 GBP.
- Equity, healthcare and dental coverage, cash plan, income protection, life insurance, discounts, and other perks.

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