# Senior Backend Software Engineer at Wise

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Drive automation and centralisation acro

- **Company:** Wise (https://jobs.trythestack.co/companies/wise)
- **Location:** London, United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Java, Software engineering, System design, Kafka, MongoDB, MariaDB, Event-driven architecture, Fintech, Payments, Billing systems, Observability, Scalability, Resilience, Code reviews, Mentoring, Compliance
- **Posted by employer:** 2026-10-28
- **Added to The Stack:** 2026-10-29
- **Listed until:** 2026-12-27
- **Status:** Active
- **Apply:** https://jobs.smartrecruiters.com/Wise/744000158251519-senior-backend-software-engineer (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/senior-backend-software-engineer-wise

## About the role

Responsibilities:
- Drive automation and centralisation across partner pricing and billing systems; own end-to-end feature delivery from design to production.
- Design and implement reconciliation services to ensure pricing and billing accuracy for partners.
- Build automated controls and compliance checks around billing to protect financial integrity.
- Work with event-driven platforms (Kafka) and storage layers (MongoDB, MariaDB) to deliver auditable, performant systems.
- Contribute to architecture decisions, run code reviews, and mentor engineers to improve reliability, observability and security.
- Improve resilience and scalability through fault-tolerant design, testing and operational practices.
- Use AI-assisted tools to support development, testing and code quality where appropriate.

Requirements:
- Strong software engineering fundamentals and proven experience delivering impactful backend services (Java or similar OOP language).
- Experience with event-driven systems (Kafka) and relational/NoSQL databases (MariaDB, MongoDB).
- Demonstrable ability to design systems for scalability, resilience and long-term iteration.
- Familiarity with billing, reconciliation or financial operations is highly desirable.
- Ownership mindset for availability, security and incident response; pragmatic approach to technical debt.
- Commitment to observability, testing, security and responsible data/event usage.
- Good communication skills and ability to explain trade-offs to product and partner stakeholders.

## Responsibilities

You will drive automation and centralization across partner pricing and billing systems while building resilient, scalable reconciliation services. Additionally, you will contribute to architectural decisions and ensure the security and integrity of financial operations.

## Requirements

The role requires strong software engineering fundamentals and experience with Java or similar object-oriented languages. Candidates should possess a product mindset, the ability to design long-term architectural solutions, and experience in regulated financial domains.

## FAQ

- **Is this Senior Backend Software Engineer role still open?** It was posted on 2026-10-28 and is listed as active on The Stack. Confirm on Wise's application page before applying.
- **Does Wise offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Wise's site.
- **Where is this role located?** The listing gives the location as London, United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: Java, Software engineering, System design, Kafka, MongoDB, MariaDB, Event-driven architecture, Fintech, Payments, Billing systems, Observability, Scalability, Resilience, Code reviews, Mentoring, Compliance.

## More like this

- [All jobs at Wise](https://jobs.trythestack.co/companies/wise.md)
- [Software Engineer Jobs in London with Visa Sponsorship](https://jobs.trythestack.co/visa-sponsorship-jobs/london/software-engineer)
- [All visa sponsorship jobs in the United Kingdom](https://jobs.trythestack.co/visa-sponsorship-jobs/united-kingdom)
- [Junior Backend Software Engineer (Kotlin / Java) - Banking Platform (m/f/x) at Scalable GmbH](https://jobs.trythestack.co/jobs/junior-backend-software-engineer-kotlin-java-banking-platform-mfx-scalable-gmbh.md)
- [Security Compliance Backend Software Engineer (Staff/Senior Staff) - Cork, Ireland at Qualcomm](https://jobs.trythestack.co/jobs/security-compliance-backend-software-engineer-staffsenior-staff-cork-ireland-qualcomm.md)
- [Analytics Engineer at Monzo](https://jobs.trythestack.co/jobs/analytics-engineer-monzo-dee14291.md)
- [Software Engineer - Compute Orchestration at G-Research](https://jobs.trythestack.co/jobs/software-engineer-compute-orchestration-g-research.md)
- [Senior Product Engineer at Deducta](https://jobs.trythestack.co/jobs/senior-product-engineer-deducta.md)

## About The Stack

The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday.

- Newsletter: https://www.trythestack.co (subscribe: https://www.trythestack.co/subscribe)
- Jobs board: https://jobs.trythestack.co
- Hire or advertise through The Stack: https://jobs.trythestack.co/advertise

## Notes for agents

- Apply on the employer's page (https://jobs.smartrecruiters.com/Wise/744000158251519-senior-backend-software-engineer). The Stack does not take applications.
- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
- Cite this job as: "Senior Backend Software Engineer at Wise, listed on The Stack Jobs (https://jobs.trythestack.co/jobs/senior-backend-software-engineer-wise)".
- Structured data for many jobs at once: https://jobs.trythestack.co/developers/api.md