Senior Backend Engineer – Payments & Cash Management

Wise; Greater London; On-site; GBP 111,000 - 145,000; Full time

Benefits offered by this job

Wise Benefits

Starting salary: £111,000 - £145,000 +

Job summary

Wise is recruiting a senior backend engineer to own critical payment backends, collaborating with product managers and other engineers to deliver robust, observable services in production. You will shape approaches, make tradeoffs, and drive reliability across the system.

You will deepen knowledge of funding, settlement and currency conversion, while expanding ownership and contributing to Wise’s engineering culture and product impact in a fast-growing organization.

Qualifications

• Hands-on experience building or making substantial contributions to large-scale distributed systems.
• Strong backend engineering experience, including relational databases, event-driven systems and proficiency in an object-oriented language.
• A product mindset: you can explain the customer problems behind your work, why your solution matters and how you assess whether it helps.
• The ability to take ownership with a high degree of autonomy, make progress through ambiguity and involve others when their expertise is needed.
• Strong collaboration and communication skills. You can explain technical decisions, work effectively across teams and contribute to your colleagues’ success.
• Curiosity about the business domain and a willingness to learn how our partners use the products you build.

Responsibilities

• Own solutions from problem to production. Work with product managers and engineers to understand partner needs, shape the approach, and design, build, test and operate backend services.
• Make thoughtful technical decisions. Explain tradeoffs clearly and balance delivery time, reliability and maintainability, including when the information available is incomplete.
• Build across system boundaries. Work with other teams to agree clear interfaces and understand how changes affect the wider payment journey.
• Improve the systems you operate. Strengthen testing and observability, diagnose production issues, and use what you learn to make services more dependable.
• Help the team succeed. Contribute across workstreams, share domain knowledge and help other engineers grow through reviews, pairing and mentoring.

Skills

Large-scale distributed systems

Backend engineering

Product mindset

Autonomy

Cross-functional collaboration

Curiosity about business domain

Tools

Java

Spring Boot

Kafka

PostgreSQL

Job description

Wise is recruiting a senior backend engineer to own critical payment backends, collaborating with product managers and other engineers to deliver robust, observable services in production. You will shape approaches, make tradeoffs, and drive reliability across the system.

You will deepen knowledge of funding, settlement and currency conversion, while expanding ownership and contributing to Wise’s engineering culture and product impact in a fast-growing organization.