Senior Software Engineer II - Business Expense Management

Wise; London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading financial technology company based in London is seeking a Senior Backend Software Engineer II for the Business Expense Management team. The role involves designing robust systems to enhance expense management processes. Ideal candidates will be proficient in backend languages like Java, Python, or Go, with experience in microservices and a passion for user experience. This position offers an inclusive culture valuing diverse perspectives.

Qualifications

• Experience in designing and implementing microservices.
• Ability to deliver complex product solutions and support millions of users.
• Proficient in languages like Java, Python or Go.

Responsibilities

• Design and build robust distributed backend systems.
• Participate in product roadmapping with the management team.
• Ensure code quality through reviews and best practices.

Skills

Backend programming languages

Distributed systems

Relational databases

Asynchronous and scalable systems

Clean code practices

Strong communication skills

Job description

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Senior Software Engineer II - Business Expense Management, London

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Client:

Wise

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

f1461dd45a9a

Job Views:

6

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

Job Description

About the role:

We are looking for a Senior Backend Software Engineer to join our Business Expense Management team. You’ll own everything related to the process of tracking, submitting, and managing business expenses as smoothly and hassle-free as possible. We help businesses collect receipts and information about expenses in the most convenient way, so our customers can focus on their work. You’ll have an opportunity to build solutions that help employees easily submit their expenses, ensure compliance with company policies, make expenses transparent for monitoring and keep bookkeeping clean.

How we work

For everything we do, we keep our customers' needs in mind. To provide the best experience for businesses, we prioritise projects using deep research based on the data, collect the feedback from customers and learn from our mistakes. At Wise, we believe in independent teams where we define our priorities ourselves and everyone can come up with ideas and suggestions.

What will you be doing?

• Designing and building robust distributed backend systems. Examples of functionality can be:

  • Providing the best experience around managing receipts.

  • Submitting information about expenses.

  • Providing visibility over expenses for businesses.

• Participating in product roadmapping and strategy sessions with the product management team.

• Owning a technical roadmap to ensure that our application is maintained to high standards.

• Translating product requirements into technical specifications.

• Ensuring code quality, consistency, and maintainability through code reviews and best practices.

• Actively collaborating with other teams and leading projects from the beginning till the release.

Impact:

Your contributions will directly impact hundreds of thousands businesses that trust Wise to manage their money. The solutions you develop will play a crucial role in sustaining and accelerating Wise’s growth, ensuring that our product offering stays a step ahead of our customer's needs and global market demands.

Qualifications

Who are we looking for?

• You know how to deliver complex product solutions and build distributed systems which are used by millions of customers.

• You are proficient in backend programming languages like Java, Python or Go.

• You have extensive experience in designing and implementing asynchronous, reliable and scalable systems in microservices environment.

• Experience working with relational DB, query optimisation and designing schemas.

• You have a strong product mindset and genuine passion for user experience — you prioritize customer value and make data-driven decisions.

• You have a self-starter attitude with a collaborative spirit — you work well independently and across teams.

• Clean, efficient, and well-tested code is your standard — you’re big on performance and maintainability.

• You are a strong communicator and can articulate complex, technical concepts to non-technical audience. You know how to communicate with multiple teams and find the best solution that suits everyone.

What Does Success Look Like

• You’ve found your footing in the team and understand how your work connects to the broader mission

• You’re using Wise’s values to guide your decision-making

• You understand our customer needs very well and actively search for solutions for them.

• You’ve built empathy for our users and the real-world impact of our product.

• You deliver new functionality for our customers efficiently and show visible impact.

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 visitWise.Jobs.

Keep up to date with life at Wise by following us onLinkedInandInstagram.