At a Glance
- Tasks: Design and build scalable APIs, mentor junior engineers, and collaborate globally.
- Company: Join Wise, a leading tech company transforming global money movement.
- Benefits: Competitive salary, RSUs, and a diverse, inclusive work environment.
- Other info: Opportunities for global collaboration and career growth.
- Why this job: Make an impact in fintech while working with cutting-edge technology.
- Qualifications: Experience in public APIs, Java, and microservices architecture required.
The predicted salary is between 87500 - 111000 £ per year.
This job is with Wise, an inclusive employer and a member of my Gwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly.
About Wise & Wise Platform
Wise is a global technology company building the best way to move and manage the world's money: min fees, max ease, full speed.
With over 13 million customers and growing fast, we are building an entirely new network for the world's money.
Wise Platform enables banks, software companies, and large enterprises to leverage Wise's global infrastructure.
Through our public APIs and backend infrastructure, our partners can offer their customers world-class international payment products.
We are a cross-functional, global team spanning London, New York, Singapore, Tallinn, and beyond.
- About the API Experience Team
- The API Experience team builds and maintains some of the most critical systems at
Wise: the public API gateway, authentication/authorization systems (OAuth2), SDKs, and developer infrastructure used by our partners and internal teams.
Our goal is to set the gold standard for intuitive, secure, and enterprise-ready financial APIs.
You will solve complex challenges around scaling microservices across our network of 700+ microservices, optimising developer experience for global banks, ensuring financial-grade security, and enabling seamless integration at scale.
- What You Will Be Doing
- Design & Architecture: Architect, build, and maintain highly scalable backend services using Java, Spring Boot, Kafka, and Postgre SQL within an event-driven, microservices architecture.
- API Product
Ownership: Set API standards (RESTful, Open API/Swagger, OAuth2) and build developer-friendly tools, SDKs, and reference implementations to reduce integration complexity for major partners.
- Technical Leadership & Mentorship: Champion engineering best practices, conduct code reviews, participate in domain modeling (DDD), and mentor junior engineers across the team.
- Cross-Functional
Collaboration: Partner closely with Product Managers, Implementation Managers, Solutions Engineers, and partner development teams to define features, shape technical solutions, and influence product strategy.
- Cross-Organizational
Impact: Work across frontend and infrastructure stacks, helping decentralized engineering teams across Wise align with API standards and architecture patterns.
- Global Travel: Collaborate directly with engineering hubs across the globe, including travel to our Tallinn office.
Qualifications
- What You Need to Succeed
- Public API Experience: Proven track record of designing, building, and maintaining production-grade public APIs (RESTful APIs, Open API/Swagger, OAuth2).
- Core Backend Stack: Extensive experience with Java and Spring Boot for building resilient backend microservices.
- Distributed Systems & Data: Hands-on experience with event-driven architecture (Kafka or similar messaging systems) and relational database design/optimization (Postgre SQL, My SQL).
- Architectural Knowledge: Proficiency in domain-driven design (DDD), microservices patterns, and building for high availability and low latency.
- Product Mindset: A customer-centric approach to engineering—balancing technical excellence with business context, user experience, and cost efficiency.
- Communication & Collaboration: Ability to convey complex technical concepts to non-technical stakeholders, collaborate across business units, and adapt to feedback.
- Nice to Have
- Experience with financial-grade security standards, compliance requirements, or international payment systems (FX, funding, settlement, interbank networks).
- Familiarity with frontend frameworks or infrastructure/gateway tooling.
- Experience maintaining open-source developer libraries, SDKs, or developer portals.
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
Additional Information
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 –
What do we offer
- Starting salary: 87500 - 111000 GBP + RSUs
- Wise Benefits
Interested in more than one role?
If you're interested in multiple roles, please apply for just one—the one you're most excited about.
If you submit multiple applications requiring the same assessment, we'll continue your recruitment journey using your first application, and any duplicate applications will be automatically closed.
This helps ensure a fair and consistent interview process.
If another role feels like a better fit, you can discuss this with your recruiter during the process.
#LI-AB3 #LI-Hybrid
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 Linked In and Instagram.
Senior API Product Engineer - Wise Platform in London employer: Wise
Wise is an exceptional employer that fosters a culture of inclusivity and innovation, making it an ideal place for a Lead ML / Data Scientist to thrive. With a hybrid working model, generous personal development budgets, and a commitment to employee growth, you will have the flexibility and resources to excel in your role while contributing to meaningful projects that redefine how money moves globally.
StudySmarter Expert Advice🤫
We think this is how you could land Senior API Product Engineer - Wise Platform in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Wise or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Wise.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Wise.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Wise that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior API Product Engineer - Wise Platform in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Wise.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Wise and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Wise
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Wise uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
