Member of Technical Staff - X Money

Maven Ventures; Greater London; On-site; GBP 50,000 - 80,000; Full time

Job summary

A tech-driven financial services company in Greater London seeks a talented Software Engineer to join their X Money team. The role focuses on backend development, designing robust microservices for a global payment network. Applicants should have proficiency in distributed systems and 2+ years of experience in large scale applications. This is a unique opportunity to work on greenfield projects at the intersection of AI and finance, driving innovation in a startup-like environment.

Qualifications

• Proficiency in distributed systems for high-scale, low-latency environments.
• 2+ years of experience working on large scale consumer applications.

Responsibilities

• Develop backend services, APIs, and data models for high-volume environments.
• Collaborate with client engineers to ship products.
• Design microservices for payments and transactions.
• Build fullstack features, including dashboards and real-time analytics.
• Lead architecture and scalability decisions.
• Ensure engineering excellence through testing and monitoring.

Skills

Distributed systems

Rust

Go

Python

Java

Job description

About xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands‑on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE:

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:

• Proficiency in distributed systems for high‑scale, low‑latency environments; languages like Rust, Go, Python & Java, and high volume streaming systems.
• 2+ years of experience working on large scale consumer applications.

PREFERRED SKILLS AND EXPERIENCE:

• 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.

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