Backend Engineer - Account Sharing

Requirements

• You know how to build scalable distributed systems and deliver customer-facing products used by millions of users.
• You are proficient in backend programming languages such as Java, Kotlin, Python, or Go.
• You have strong experience designing asynchronous, reliable, and scalable systems within microservice architectures.
• You are comfortable working in greenfield environments where requirements evolve rapidly and ambiguity is part of the process.
• You have a strong product mindset and enjoy collaborating closely with Product Managers, Designers, Analysts, and Researchers to shape solutions — not just implement them.
• You care deeply about customer experience and understand how technical decisions impact end users.
• You are comfortable contributing to architectural discussions, challenging assumptions, and influencing technical and product direction.
• You write clean, maintainable, well-tested code and care about long-term scalability and reliability.
• You are a strong communicator who can explain complex technical concepts clearly and collaborate effectively across teams.
• You are comfortable operating independently while also contributing to a collaborative team culture.

Nice to Have

• Experience building greenfield products from scratch
• Experience working on international consumer products
• Experience with payments, financial systems, or compliance-heavy environments
• Experience building systems at global scale
• Familiarity with event-driven architecture and messaging systems such as Kafka
• Experience with customer-facing financial products
• API-first development experience

What You'll Be Doing

• Building international joint accounts for globally distributed users
• Expanding Wise kid accounts into additional markets
• Creating shared finance experiences that work across borders
• Designing scalable backend systems for high-growth consumer products
• Developing features around shared spending, sending/receiving money, and account customization
• Collaborating on customer discovery and product iteration
• Scaling infrastructure and improving reliability across multiple markets
• Building greenfield financial products from concept to production
• Opportunities to work across multiple areas of the Wise ecosystem

Perks and Benefits

• Starting salary: £87,500 - £111k + RSUs