Senior Java Developer - API SDK Team @ING Hubs Romania
Core
Develop and maintain the API SDK, a Spring Boot-based foundational framework for building secure, resilient, and high-performance APIs across ING's global digital banking ecosystem.
Role type
Senior IC Java Platform Engineer (API Framework)
Builds
Reusable API SDK components, connectivity modules for container platforms and service meshes, and developer documentation/tools.
Domain
Financial Services / Distributed Systems / Cloud Native
Required skills
Java 17+, Spring Boot, Microservices, Distributed Systems, Framework Design, Security (OAuth2, JWT, mTLS), Cloud/DevOps (Kubernetes, CI/CD), Observability
Preferred skills
SDK/Developer Platform experience, Kafka, Event-driven architectures, API Gateways, Cassandra/PostgreSQL, Financial Services domain knowledge
Technologies
Java, Spring Boot, Maven, Gradle, Kubernetes, OpenShift, Docker, Azure, Kafka, Prometheus, Grafana, OpenTelemetry
Responsibilities
Develop and maintain the API SDK and core Toolkit components; Integrate the framework with container platforms, messaging systems, and service meshes; Design intuitive APIs and configuration interfaces; Create documentation, testing tools, and reference implementations; Support development teams using the SDK and review community contributions.
Seniority
Senior, hands-on IC