Senior Software Engineer I - Account Integrity

Wise; Greater London; On-site; GBP 88,000 - 111,000; Full time

Benefits offered by this job

RSUs

Hybrid work model

Job summary

Wise is seeking a Senior Software Engineer for its Account Integrity team in London. You will build and refine controls to protect customer accounts, working primarily on backend systems with some frontend work using React/Typescript.

The role emphasizes scalable design, data-driven decisions, and collaboration across Product, Data Science, and Investigations teams. The ideal candidate has strong Java/JVM experience, experience with CI/CD, and a product mindset.

Qualifications

• Professional experience with Java or JVM languages and the Spring framework.
• Experience building scalable web applications handling high traffic.
• Proven ability to design and operate CI/CD pipelines and distributed systems.
• Strong product mindset with data-driven decision making and customer focus.
• Experience with relational and non-relational databases and query optimization.
• Commitment to Test Driven Development and high code quality.
• Excellent cross-team communication with Product, Data Science, Investigations.

Responsibilities

• Build and refine critical controls to protect Wise customers' accounts.
• Lead backend and frontend work for crime prevention and detection systems (80% backend / 20% frontend).
• Deliver real-world impact by securing customers' money and enabling product growth through automation.

Skills

Java

System design

Communication

Product ownership

Test driven development

Collaboration

Tools

Spring framework

React

JavaScript

TypeScript

CI/CD pipelines

Relational databases

NoSQL databases

Job description

Company Description

Wise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money. As part of our team, you will be helping us create an entirely new network for the world's money. For everyone, everywhere. More about our mission and what we offer.

Job Description

About the role: Join us as a Senior Software Engineer in our critical Account Integrity team. This is a high-impact engineering role with a strong product focus, dedicated to solving complex, real-world adversarial problems to directly protect our global customer base.

How we work: The Account Integrity team is on the front lines, dedicated to safeguarding our platform against sophisticated financial crime. We leverage cutting-edge machine learning, real-time transaction monitoring, and advanced data analysis to create robust controls and detection capabilities. Our vision is to build a globally scalable fraud prevention engine that protects customer accounts, prevents scams, and consistently surpasses regulatory expectations.

What will you be working on?

• Building and refining critical controls to protect Wise customers accounts from account takeovers.
• Drive Backend and Frontend for our crime prevention and detection systems - You will be working 80% of the time on a backend and 20% on the frontend.
• You will be delivering a tangible, real-world impact by securing customers' money, accelerating product growth by raising automation levels, and helping us engineer a world-class money transfer product.

What do you need?

• Engineering Expertise: Professional experience with Java or other JVM-based languages, including the Spring framework. Experience building and designing scalable web applications that handle large amounts of traffic - ideally using React based frontend applications, Javascript / Typescript.
• System Design & Operation: Proven experience designing and operating CI/CD pipelines, Distributed, and Concurrent Systems.
• Product Ownership: A strong product mindset, accountability, and the ability to drive projects independently, making data-driven decisions with the customer in mind.
• Data Proficiency: Experience with relational and non-relational databases, including query optimisation and designing resilient schemas.
• Code Quality: Exceptional fundamentals, sharp problem-solving ability, and a commitment to Test Driven Development and best coding practices.
• Collaboration: Excellent communication skills to articulate complex technical concepts across teams (Product, Data Science, Investigations).
• Nice to Have: Familiarity with the machine learning lifecycle (data pipelines, feature engineering, and deploying ML systems into production).

Interested? Find out more: How we work – a practical guide DEI @ Wise Wise Tech Stack (2025 update) See what it's like to work at Wise London! Our Engineering career map Wise Engineering – https://medium.com/wise-engineering What do we offer: Starting salary: £87,500 - 111,000 + RSUs Wise Benefits #LI-AB3 #LI-Hybrid

Additional Information

For everyone, everywhere. We're people building money without borders — without judgement or prejudice, too. We believe teams are strongest when they are diverse, equitable and inclusive. We're proud to have a truly international team, and we celebrate our differences. Inclusive teams help us live our values and make sure every Wiser feels respected, empowered to contribute towards our mission and able to progress in their careers. If you want to find out more about what it's like to work at Wise visit Wise.Jobs . Keep up to date with life at Wise by following us on LinkedIn and Instagram .