Senior API Product Engineer Wise Platform

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 PostgreSQL within an event-driven microservices architecture.

• API Product Ownership: Set API standards (RESTful OpenAPI/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 OpenAPI/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 (PostgreSQL MySQL).

• 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 engineeringbalancing 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 do we offer: 

  • Starting salary: 87500 - 111000 GBP RSUs

  • Wise Benefits

  Interested in more than one role

  If youre interested in multiple roles please apply for just onethe one youre most excited about. If you submit multiple applications requiring the same assessment well 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.

   

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

  Were 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 its like to work at Wise visit .

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  Remote Work :

  No

  
  

  Employment Type :

  Full-time