Open-source fintech core: double-entry ledger, payment orchestration, KYC/AML compliance and a JSON-DSL decision engine. Kotlin · Spring Boot · event-driven
kotlin microservices spring-boot postgresql payments ledger fintech event-driven compliance aml kyc bookkeeping decision-engine double-entry-accounting idempotency outbox-pattern payment-orchestration fintech-infrastructure financial-core
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Jul 20, 2026 - Kotlin