Senior Backend Software Engineer at Wise
At a glance
- Company
- Wise
- Location
- London, United Kingdom
- Work arrangement
- On-site
- Employment type
- Full-time
- Experience
- 5–10 years
- Working hours
- 40 hours
- Visa sponsorship
- Offered, according to the listing
- Posted
- Added to The Stack
✨ The Stack take on this Wise job
- 🏢 Wise has 46 jobs here, 44 with visa sponsorship see all
- 📊 53 Software Engineer jobs in the United Kingdom in the last 60 days see them
- 🛂 Skilled Worker visa. Standard minimum salary: £41,700 a year guide
- 💡 No salary shown. Ask Wise if it is above the minimum.
Updated 2026-11-02, from our data and official sources.
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About the role
Responsibilities:
- Drive automation and centralisation across partner pricing and billing systems to reduce manual effort and errors.
- Design, build and extend reconciliation systems and automated controls to ensure billing accuracy and compliance.
- Deliver secure, auditable solutions for complex partner requirements and own features end-to-end from design to production.
- Contribute to architectural decisions, code reviews and mentoring to raise reliability, observability and code quality.
- Work with event-driven architectures (Kafka) and databases (MongoDB, MariaDB); improve system resilience and scalability.
- Use AI tooling to support development, testing and delivery; participate in incident response and post-incident learning.
Requirements:
- Strong software engineering fundamentals with significant production experience (senior level), ideally 5+ years.
- Proficiency in Java or a similar object-oriented language and experience designing long-lived scalable systems.
- Practical experience with event-driven systems, Kafka, MongoDB/MariaDB and observability practices.
- Accountability for availability, reliability and security; comfortable with on-call duties and incident management.
- Good judgement balancing speed, scalability and risk; familiarity with fintech/regulatory environments, compliance and auditability.
Responsibilities
You will drive automation and centralization across partner pricing and billing systems while building resilient, scalable reconciliation solutions. Additionally, you will contribute to architectural decisions and mentor other engineers to ensure high-quality, secure, and performant system delivery.
Requirements
Candidates should have strong software engineering fundamentals and experience with Java or similar object-oriented languages. A product mindset, ability to design long-term architectural solutions, and experience in fintech or regulated financial domains are highly valued.
Key skills
- Java — in 339 other listings on The Stack
- Software engineering — in 192 other listings on The Stack
- System design — in 195 other listings on The Stack
- Kafka — in 164 other listings on The Stack
- MongoDB — in 57 other listings on The Stack
- MariaDB — in 13 other listings on The Stack
- Event-driven architecture — in 58 other listings on The Stack
- Fintech — in 74 other listings on The Stack
- Payments
- Billing systems
- Reconciliation systems
- Observability
- Scalability
- Resilience
- Code reviews
- Mentoring
On The Stack (as of 2026-11-02)
Frequently asked questions about Wise
Is this Senior Backend Software Engineer role still open?
It was posted on 2026-10-29 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, Reconciliation systems, Observability, Scalability, Resilience, Code reviews, Mentoring.