Senior Backend Software Engineer

• Drive automation and centralisation across partner pricing and billing systems.

• Build and extend reconciliation systems that ensure pricing and billing accuracy for partners.

• Design and implement automated controls around pricing and billing, supporting compliance requirements and financial integrity.

• Deliver secure solutions for complex partner requirements with a long-term architectural perspective.

• Design and build features end-to-end across pricing and billing services.

• Contribute to architectural decisions and code reviews, helping raise the bar on quality, reliability, and observability.

• Improve the resilience and scalability of systems that support external partners and financial operations.

• Work with event-driven architectures, including Kafka, alongside MongoDB and MariaDB to build auditable, extensible, and performant systems.

• Use AI tooling in the development lifecycle to support delivery and code quality.

We are fully aware that it is uncommon for a candidate to have all skills required and we fully support everyone in learning new skills with us. So if you have some of those listed below and are eager to learn more we do want to hear from you!

• Strong software engineering fundamentals and a track record of contributing significantly to impactful projects.

• Experience with Java or a similar object-oriented programming language.

• Ability to design systems with a longer-term approach, using patterns that allow safe iteration and scaling.

• Accountability within your team for the availability, reliability, and security of the systems you build.

• Good judgement in balancing speed, scalability, and risk, with resilience and safety in mind.

• Ability to address technical debt pragmatically and plan work within an appropriate risk appetite.

• Commitment to engineering best practices across observability, security, testing, and responsible data and event usage.

• Ownership of technical deliverables across projects from design through production.

• Ability to explain why something is being built, what partner or business problem it solves, and what outcome is expected.

• Comfort with long-term ownership of systems while collaborating to reduce single points of failure.

• Willingness to take an active role in incident resolution and post-incident learning.

• Focus on predictable delivery and a healthy engineering cadence.

• Participation in on-call support for your area when needed.

• Communicate clearly and collaborate effectively across functions to achieve team goals.

• Mentor and support other engineers in the team.

• Help onboard new engineers when needed.

• Promote collaboration that reduces duplicate work and improves shared understanding.

• Contribute to broader engineering efforts, communities, or guilds across Wise.

• Participate in hiring processes and interviews using Wise interviewing practices.

• Experience in payments, fintech, billing, or another regulated financial domain.

• Experience working with external partners or B2B integrations where correctness and auditability matter.

• Experience with systems involving compliance, audit, or regulatory requirements.

• Familiarity with event-driven architectures, reconciliation systems, or configuration-heavy domains.