Senior Full-Stack Engineer — Fraud Prevention & Security

Xapply; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Wise is seeking a Senior Full-Stack Engineer to join the Account Integrity team in London. This high-impact role focuses on solving adversarial problems to protect our global customer base, with end-to-end ownership of projects that matter for security and trust.

You'll work in a cross-functional environment with product, design, data science, and investigations, delivering customer-facing controls and scalable fraud prevention capabilities that support Wise's mission to move money securely and

Qualifications

• Experience with Java or JVM languages and the Spring framework.
• Experience building scalable web applications handling high traffic.
• Frontend experience with React, JavaScript and TypeScript.
• CI/CD pipelines and distributed systems experience.
• Strong product mindset and data-driven decisions with customers in mind.
• Experience with relational and non-relational databases and resilient schemas.
• Commitment to TDD and best coding practices.
• Excellent communication and collaboration; mentoring junior engineers.

Responsibilities

• Build and refine critical controls to protect Wise customers' accounts.
• Collaborate with Product, Design, Data Science, and Investigations.
• Deliver tangible impact by securing customers' money and increasing automation.

Skills

Java

Spring

React

JavaScript

TypeScript

Distributed systems

System design

TDD

Mentoring

Collaboration

Tools

PostgreSQL

MongoDB

AWS

Kubernetes

Job description

Wise is seeking a Senior Full-Stack Engineer to join the Account Integrity team in London. This high-impact role focuses on solving adversarial problems to protect our global customer base, with end-to-end ownership of projects that matter for security and trust.

You'll work in a cross-functional environment with product, design, data science, and investigations, delivering customer-facing controls and scalable fraud prevention capabilities that support Wise's mission to move money securely and