Senior Software Java Engineer I - Reliability

Wise; Greater London; Hybrid; GBP 88,000 - 111,000; Full time

Benefits offered by this job

RSUs

Wise Benefits

Job summary

Wise is seeking a Senior Software Engineer for the Reliability Engineering team to improve reliability, performance, and compliance of Wise products. You will collaborate with software teams across the business, tackling complex reliability challenges and implementing scalable, reusable solutions.

The role focuses on balancing automation with practical engineering, optimizing critical backend services, and partnering with product and platform teams to drive reliability improvements at scale.

Qualifications

• Strong collaboration skills and ability to dive into projects with limited context.
• Experience with microservices in Kubernetes and cloud-based architectures.
• Hands-on software engineering experience (Java or other backend languages).
• Troubleshooting applications, databases and data-related issues with practical impact.

Responsibilities

• Identify opportunities to optimise reliability and performance of critical services.
• Develop and implement scalable, org-wide reliability strategies.
• Deep-dive with teams to implement best practices and improvements.

Skills

Collaboration

Kubernetes

Backend engineering

Java

Troubleshooting

Product engineering

Job description

Company Description

Wise is a global technology company, building the best way to move and manage the world’s money.
Min fees. Max ease. Full speed.

Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money.

As part of our team, you will be helping us create an entirely new network for the world's money.
For everyone, everywhere.

More about our mission and what we offer.

Job Description

More about our mission.

About the role

We are looking for a Senior Software Engineer to join our Reliability Engineering team at Wise. You will work cross-functionally with software engineering teams across the business, identifying and implementing reliability improvements to our most important business services.

Our team's mission: Enhance the reliability, performance, and compliance of Wise products for customers. Bridge the gap between Product and Platform through collaboration, hands‑on contribution, and co‑ordinating org‑wide efforts.

How we work

We operate on a strong belief in automation and reusable design. We’re looking for people who can step back and think holistically about the ecosystem, design scalable solutions, and follow through on implementation, drawing on the resources across the rest of the Platform tribe.

As Wise scales, the reliability expectations for our products continue to increase. To sustain the growth, we must continuously iterate on the services we run, with a focus on availability and customer experience. We’re looking for an engineer with relevant expertise who can analyse complex requirements and deliver simple solutions to help product teams achieve our mission with speed and confidence.

What will you be working on?

• Identify opportunities to optimise the performance of our critical backend microservices, by implementing and improving the common libraries used by teams across Wise.
• Develop and implement org-wide, resilient strategies in code, to address challenges in capacity, autoscaling, resiliency, performance and redundancy.
• Deep-dive with teams into their services, suggest best practices, and implement changes to improve reliability.

What do you need?

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!

• A product engineering background, and are looking to have a big impact.
• Strong collaboration skills, an ability to jump into projects with limited context and be enthusiastic about influencing how teams prioritise reliability.
• Strong experience working with microservices in a Kubernetes, cloud‑based architecture.
• Hands‑on Software Engineering experience (Java or other backend languages) - you will be contributing to the Wise product and applying reliability best practices (development, resiliency patterns, observability).
• Hands‑on experience with troubleshooting Application, Database, Data related issues.
• Strong prioritisation skills and effective time management.

We are currently only considering local candidates as relocation support is not provided.
For local candidates we are able to support transfer of visa sponsorship.

Interested? Find out more:

• How we work – a practical guide

• DEI @ Wise

• Wise Tech Stack (2025 update)

• Our Engineering career map

• Scaling our Infrastructure; how we make it work

• Wise Engineering – https://medium.com/wise-engineering

What do we offer:

• Starting salary: £87,500 - £111,000 + RSUs

• Wise Benefits

#LI-AB3 #LI-Hybrid

Additional Information

For everyone, everywhere. We're people building money without borders — without judgement or prejudice, too. We believe teams are strongest when they are diverse, equitable and inclusive.

We're proud to have a truly international team, and we celebrate our differences.
Inclusive teams help us live our values and make sure every Wiser feels respected, empowered to contribute towards our mission and able to progress in their careers.

If you want to find out more about what it's like to work at Wise visit Wise.Jobs.

Keep up to date with life at Wise by following us on LinkedIn and Instagram.