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with hands on payments experience to design and build secure high performance payment services The candidate should be expert in Core Java Spring Boot microservices and Kafka They should also use AIassisted engineering especially spec driven development to deliver high-quality software faster Working directly with Nordic client stakeholders they will own solutions from specification through to production\nKey Responsibilities\nDesign develop and maintain scalable payment microservices for payment initiation clearing settlement and reconciliation\nBuild eventdriven high throughput flows using Kafka with idempotency exactly once handling and reliable retry and error handling\nWrite clear specifications requirements acceptance criteria API contracts data models and use them as the single source of truth for AIassisted design code generation and testing\nUse AI coding assistants and agents eg GitHub Copilot Spec Kit or similar to turn specifications into plans tasks code and tests Critically review all AIgenerated output for correctness security and compliance\nDesign REST APIs contract first using OpenAPI and keep specifications and code in sync\nMake sure solutions meet banking grade standards for security resilience audit and data protection\nWork with product owners architects and testers in Agile SAFe teams Mentor other developers on modern Java and AIassisted engineering practices\nSupport production and analyse incidents for business critical payment systems\nRequired Skills\nJava and backend\nExpert in Java 17 Java 21 preferred Spring Boot 3 Spring Framework Spring Data Hibernate JPA\nSpring Security with OAuth2OIDC JWT and mTLS\nMicroservices patterns API gateway circuit breaker saga outbox CQRS and event sourcing\nKafka producers consumers partitioning schema registry Kafka Streams\nContractfirst REST API development OpenAPISwagger API versioning and documentation\nPayments domain\nHandson experience with ISO 20022 messages pain pacs camt and SWIFT MTMX migration\nKnowledge of SEPA Credit Transfer SEPA Instant SCT Inst SEPA Direct Debit and realtime payment schemes such as TIPSRT1\nUnderstanding of the payment lifecycle initiation validation screening routing clearing settlement and reconciliation\nAwareness of EU regulation including PSD2Open Banking APIs the EU Instant Payments Regulation DORA GDPR and AMLsanctions screening\nAI and specdriven development\nPractical experience with specdriven development writing structured testable specifications that drive AIgenerated design code and tests\nSkilled use of AI coding assistants and agents in daily development prompt and context engineering iterating on output generating tests\nAbility to validate AIgenerated code for quality security and performance and to apply guardrails such as code review static analysis and policy checks\nUnderstanding of responsible AI in regulated environments no sensitive data in prompts traceability human oversight\nData and databases\nStrong relational 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