Wise Logo

Wise

Senior Backend Engineer - Payin Platform

Posted Yesterday
Be an Early Applicant
Hybrid
London, Greater London, England
Senior level
Hybrid
London, Greater London, England
Senior level
Design, develop, test, and maintain Java and Kotlin backend services for Wise’s pay-in platform. Build scalable REST APIs, payment orchestration systems, PostgreSQL data models, and Kafka-based event-driven services on AWS. Optimize performance and reliability, write automated tests, review code, support production incidents through on-call rotations, and protect sensitive financial data while collaborating cross-functionally.
The summary above was generated by AI
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

Recurring Payin team owns the Direct Debit API that powers automated payments into Wise. Underneath this, we are building a platform that allows customers to easily schedule top-ups or business collections.

The platform is also built on top of our internal Payin Platform rails; which is a critical component to the Wise money-movement machine and we’re looking for an engineer motivated to come and help us build for this.

We primarily offer APIs for any partner looking to set up automated funding or pre-authorizations. From setting up GBP balance top ups automatically to allowing business partners collect EUR bills monthly without having the customer go through the flow every time; our platform aims to consolidate all these use-cases.

We aim to allow customers to give a one time permission (pre-authorization) for Wise to pull money across any payment method, a USD bank account or a EUR issued bank card; you name it.

Job Responsibilities:

  • Design, develop, test, and maintain backend services written in Java and Kotlin using the Spring Boot framework, deployed on cloud infrastructure (AWS)
  • Build and maintain RESTful APIs that serve millions of customers across web and mobile platforms
  • Develop and optimise services powering the card pay-in payment method — one of the most popular payment methods, enabling Wise customers to move around £1 billion every month
  • Design and implement database schemas, write and optimise SQL queries against PostgreSQL databases handling high-volume transactional data
  • Build and maintain event-driven architectures using Apache Kafka for asynchronous processing of financial events across distributed services
  • Develop and maintain a payment orchestration system that dynamically routes payments across Payment Service Providers to optimize for cost and reliability
  • Write automated tests (unit, integration, and end-to-end) to ensure correctness and reliability of financial systems
  • Conduct code reviews for team members, ensuring code quality, security, and adherence to engineering standards
  • Participate in on-call rotations to monitor and respond to production incidents for Tier 2 critical services
  • Collaborate with product managers, designers, analysts, and engineers across other teams to deliver cross-functional projects
  • Identify and resolve performance bottlenecks, scalability issues, and technical debt in existing systems
  • Ensure development follows security best practices, particularly around handling of sensitive financial data and compliance with financial regulations

Additional Information

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

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.

Similar Jobs at Wise

One Month Ago
Hybrid
Senior level
Senior level
Fintech • Mobile • Payments • Software • Financial Services
Build and maintain the Payin Platform that handles how money enters Wise. Design Payin Session and Payment abstractions, ensure reliability and scalability for high-volume transactions, collaborate across teams, write testable code, drive end-to-end ownership, and improve APIs and systems for excellent customer experience.
Top Skills: GoJavaKafkaKotlinPythonRelational DatabasesSpring Framework
Yesterday
Hybrid
Expert/Leader
Expert/Leader
Fintech • Mobile • Payments • Software • Financial Services
Lead the architecture and production delivery of deep learning systems for real-time financial crime detection. Design sequence, graph, and attention-based models; establish reusable experimentation-to-production pipelines; evaluate foundation models and embeddings; make model, training, and serving architecture decisions; partner with data scientists on evaluation and causal measurement; and mentor engineers and data scientists.
Top Skills: Attention MechanismsBatching StrategiesDeep LearningDistributed TrainingEntity ResolutionFoundation ModelsGraph Message-PassingGraph Neural NetworksLink AnalysisLlm EvaluationMl Pipeline OrchestrationPre-Computed EmbeddingsPythonPyTorchQuantizationSequence Modeling
Yesterday
Hybrid
Senior level
Senior level
Fintech • Mobile • Payments • Software • Financial Services
Build scalable backend systems and customer-facing financial products for Wise’s shared-finance offerings, including international joint accounts and kid accounts. Collaborate with product, design, data, and research teams to shape ambiguous ideas, influence architecture and product direction, and deliver reliable systems globally. Work includes money movement, spending, authorization, compliance-related systems, shared-account infrastructure, greenfield development, and infrastructure scaling.
Top Skills: Api-First DevelopmentAsynchronous SystemsDistributed SystemsEvent-Driven ArchitectureGoJavaKafkaKotlinMicroservicesPython

What you need to know about the Edinburgh Tech Scene

From traditional pubs and centuries-old universities to sleek shopping malls and glass-paneled office buildings, Edinburgh's architecture reflects its unique blend of history and modernity. But the fusion of past and future isn't just visible in its buildings; it's also shaping the city's economy. Named the United Kingdom's leading technology ecosystem outside of London, Edinburgh plays host to major global companies like Apple and Adobe, as well as a growing number of innovative startups in fields like cybersecurity, finance and healthcare.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account