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Wise · London, United Kingdom

# Senior Backend Software Engineer

London, United Kingdom Full-time Senior individual contributor Software Engineering 

Listed on Wise’s official careers site. Posted October 29, 2026. Check that it is still open and apply there.
[Apply on Wise’s careers site →](https://jobs.smartrecruiters.com/Wise/744000158616034-senior-backend-software-engineer)

[OpenNash Jobs](https://jobs.opennash.com/) / [Wise](https://jobs.opennash.com/companies/wise/) / Senior Backend Software Engineer

## Job description

What will you be working on? 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.

Technical responsibilities 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.

## Qualifications

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! Technical excellence 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 and product mindset 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. Influence and collaboration 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. Nice to have 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.

## At a glance
- Posted by the employer: Oct 29, 2026
- First seen by OpenNash: Nov 1, 2026
- Last checked: Nov 8, 2026
- Listed for: 10 days
- Location: London, United Kingdom
- Employment type: Full-time[Apply on Wise’s careers site →](https://jobs.smartrecruiters.com/Wise/744000158616034-senior-backend-software-engineer)

## Hiring at Wise
- Open jobs: 409
- New in the last 7 days: 36
- Tracked since: Jul 16, 2026

[All Wise jobs](https://jobs.opennash.com/companies/wise/) · [Weekly hiring report](/reports/hiring/)

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### [Europe Risk And Controls Senior Software Engineer II](https://jobs.opennash.com/companies/wise/jobs/27d00e818fc576a2c3ff/)

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### [Quantitative Researcher / Developer (Data Science) - Treasury FX](https://jobs.opennash.com/companies/wise/jobs/36f1c0e0fe237c7bf256/)

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### [Senior Backend Engineer - Payin Platform](https://jobs.opennash.com/companies/wise/jobs/dd1b7149bfba7f7b235c/)

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### [Senior Backend Engineer - Personal and Business Pricing](https://jobs.opennash.com/companies/wise/jobs/a48dd3b49bea836c91d4/)

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