About the company
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 life 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.
Responsibilities
- Design, develop, test, and maintain backend services written in Java and Kotlin using the Spring Boot framework, deployed on cloud infrastructure (AWS)
- Build and maintain RESTful APIs that serve millions of customers across web and mobile platforms
- Develop and optimise services powering the card pay-in payment method — one of the most popular payment methods, enabling Wise customers to move around £1 billion every month
- Design and implement database schemas, write and optimise SQL queries against PostgreSQL databases handling high-volume transactional data
- Build and maintain event-driven architectures using Apache Kafka for asynchronous processing of financial events across distributed services
- Develop and maintain a payment orchestration system that dynamically routes payments across Payment Service Providers to optimize for cost and reliability
- Write automated tests (unit, integration, and end-to-end) to ensure correctness and reliability of financial systems
- Conduct code reviews for team members, ensuring code quality, security, and adherence to engineering standards
- Participate in on-call rotations to monitor and respond to production incidents for Tier 2 critical services
- Collaborate with product managers, designers, analysts, and engineers across other teams to deliver cross-functional projects
- Identify and resolve performance bottlenecks, scalability issues, and technical debt in existing systems
- Ensure development follows security best practices, particularly around handling of sensitive financial data and compliance with financial regulations
Requirements
- Experience with Java and Kotlin
- Experience with Spring Boot
- Experience with AWS
- Experience with RESTful APIs
- Experience with PostgreSQL
- Experience with Apache Kafka
- Experience with payment systems or financial services is a plus