salmon-group - Software Developer (Kotlin/Java), Payment Platform

• Develop scalable microservices on the JVM with Spring Boot, as part of a team building platform solutions for our banking product. • Design payment services with a focus on DDD, eventual consistency, and resilience to partner and infrastructure failures. • Work with product, QA, security, and operations to release changes under agreed engineering standards. • What you’ll own: • Own the design, build, and maintenance of software components supporting the Core Engineering team. • Design and evolve payment flows end to end: processing, routing, status handling, refunds/reversals. • Integrate new payment providers, banks, and partner channels, and handle their failure modes gracefully. • Build and maintain scalable, reliable APIs and services, and contribute to internal SDKs and frameworks that let product teams launch new payment use cases quickly and safely. • Investigate payment incidents (stuck, duplicated, or inconsistent transactions) and make the system self-healing. • Translate functional requirements into technical solutions and maintainable implementations. • Contribute to code and configuration reviews. • What makes you a strong fit: • 3+ years of software development on the JVM; good knowledge of Kotlin is an advantage • Experience with Spring Boot in a microservice environment • Experience with domain-driven design and eventual consistency • Experience with payments, banking, or other transactional/financial systems (payment platforms, PSP integrations, wallets, ledgers) • Solid understanding of idempotency, distributed transactions, retries, and timeouts in money flows • Track record in an agile setup with continuous deployment and delivery • Experience with containerization and orchestration in a cloud environment (Docker and Kubernetes preferred, AWS preferred) • Experience with, and enjoyment of, continuous knowledge-sharing within the team • Nice to have: Kafka, workflow engines, ISO 20022