Senior Backend Engineer - Payin Platform

Wise
London
Workplace: OnsiteFull timeGBP 87,500 - 111,000 annuallyFunction: Software EngineeringSkills: ["Code quality","Security-minded","Performance optimization","Collaboration","Incident response"]

Build and maintain backend services for the Payin platform, powering Direct Debit API-driven automated payments and customer top-ups or business collections. Design REST APIs used across web and mobile, develop card pay-in capabilities, and optimize high-volume transactional data in PostgreSQL. Create event-driven architectures with Apache Kafka, build payment orchestration across providers, write automated tests, review code, and support on-call for production incidents.

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FursaFursa
Wise
Wise
5 days ago

Senior Backend Engineer - Payin Platform

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 14 hours agoStatus: Live
Reposted: similar role first listed 2 months ago

Job Summary

Build and maintain backend services for the Payin platform, powering Direct Debit API-driven automated payments and customer top-ups or business collections. Design REST APIs used across web and mobile, develop card pay-in capabilities, and optimize high-volume transactional data in PostgreSQL. Create event-driven architectures with Apache Kafka, build payment orchestration across providers, write automated tests, review code, and support on-call for production incidents.
Location: London
Workplace: Onsite
Employment Type: Full time · Permanent
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design, develop, test, and maintain backend services in Java and Kotlin with Spring Boot, deployed on AWS.
  • •Build and maintain RESTful APIs used by web and mobile customers.
  • •Design and optimize database schemas and SQL queries for high-volume transactional data in PostgreSQL.
  • •Build event-driven architectures with Apache Kafka and develop payment orchestration to route payments across payment service providers.
  • •Write automated tests, conduct code reviews, and participate in on-call to handle production incidents for critical Tier 2 services.

Pay and Benefits

Salary: GBP 87,500 - 111,000 annually

Key Requirements

  • •Design, develop, and maintain backend services using Java and Kotlin with the Spring Boot framework.
  • •Build and maintain RESTful APIs serving millions of customers across web and mobile platforms.
  • •Design and optimize database schemas and write SQL queries for high-volume transactional data in PostgreSQL.
  • •Develop event-driven architectures using Apache Kafka for asynchronous processing.
  • •Write automated tests (unit, integration, end-to-end) and participate in code reviews and on-call for critical services.
Experience:Financial servicesPaymentsAPIsEvent-driven systems
Skills:Code qualitySecurity-mindedPerformance optimizationCollaborationIncident response
Languages:English
Tech Stack:JavaKotlinSpring BootAWSREST APIsPostgreSQLSQLApache KafkaUnit testingIntegration testingEnd-to-end testing

Company Brief

Wise
Wise (formerly TransferWise) is a London-based fintech that provides low-cost international money transfers, multi-currency accounts and payment infrastructure for individuals and businesses worldwide.
Industry: Payments
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: London, United Kingdom
Founded: 2011
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