Senior Software Engineer I, Stream Processing — Kafka & Flink

• Join the Stream Processing team within Wise's Data Squad, providing the tooling and infrastructure that allows Wise to process transfers in real time. • Power validation, fraud detection, and AML checks by enabling services to make calculations and decisions in milliseconds. • Design, architect, implement, and operate stream processing systems on AWS, while helping product engineers adopt tooling and best practices. • Sustain platform growth by continuously iterating on services with a focus on availability, security, and ease of use. • Hybrid role based in London.

• Experience with Flink and/or Kafka Streams. • Experience building production code with Java and Spring. • Experience with infrastructure automation tools. • Experience building and operating distributed systems at scale. • Strong belief in automation, programmatic implementation, and reusable design. • Able to analyse complex requirements and deliver simple, scalable solutions.

• Familiarity with Apache Iceberg for data lakehouse architectures. • Experience with Kubernetes operators. • Background providing platform engineering support to product teams — laying down best practices and rules for stream processing pipelines.

• Design, architect, implement, and operate stream processing systems on AWS. • Build and support tooling to create pipelines used for real-time decision making in the milliseconds range. • Help product engineers use stream processing tooling and systems, establishing best practices and guidelines. • Enable data movement into Wise's data lake, allowing product teams and analysts to make data-driven decisions. • Continuously iterate on services with a focus on availability, security, and ease of use as the team scales.

We have been Wise customers for years and have always had a great experience. We love their transparent approach in everything they do, from showing the correct exchange rates to disclosing all their fees, and even being honest about how they work. Founded in 2010 in London, Wise is now a publicly traded company operating in over 160 countries, generating 1.2+ billion pounds in revenue (2025) and is highly profitable. What we especially love at Wise is their work from anywhere policy after 6 months: Basically you can remotely work from (almost) anywhere in the world for up to 90 days a year. As they are solving a massive problem and are strongly mission-driven, we are sure that any individual passionate about working on complex, impactful problems in sending money globally efficiently, while continuing to work on the much-loved Wise solutions, will love working there.

• Starting salary of £87,500–£111,000 plus RSUs. • Comprehensive Wise benefits package. • Hybrid working from Wise's London office.

Wise is a global technology company on a mission to make moving and managing money across borders as easy, fast, and cheap as possible. With customers sending money internationally, spending abroad, and making cross-border payments, Wise is building an entirely new network for the world's money — for everyone, everywhere.