Discover ING Hubs Romania

ING Hubs Romania offers 130 services in software development, data management, non-financial risk & compliance, audit, and retail operations to 24 ING units worldwide, with the help of over 2000 high-performing engineers, risk, and operations professionals.

We started out in 2015 as ING’s software development hub, then steadily expanded our range to include more services and competencies. Now we provide borderless services with bank-wide capabilities and operate from two locations: Bucharest and Cluj-Napoca.

Our tech capabilities remain the core of our business, with more than 1800 colleagues active in Data and Analytics Tech, Tech Foundation and Channels, Retail Core Banking and Architecture, and Global Products and Technology Services.

We enjoy a flexible way of working and a highly collaborative environment, where fair and constructive feedback is encouraged. For us, impact isn't a perk. It's the driver of our work. We are guided and rewarded by a shared desire to make the world a better place, one innovative solution at a time. Our colleagues make it their job to do impactful things and they love doing it in good company. Do you?

The Mission

The API SDK is ING's core framework for developing secure, resilient, and high-performance APIs. This role offers the opportunity to work on foundational platforms that power ING's digital banking capabilities across our global technology ecosystem.

API SDK is a Spring Boot-based framework that serves as the foundation for developing APIs. It's a lightweight layer on top of Spring Boot that configures beans and filters specific to the ING landscape, including:

Service registry integration for automatic service registration and discovery
Pre-configured resilient HTTP client for inter-service communication
Security components (token validation, access control, and authorization)
Centralized logging and metrics integration with monitoring platforms
Service mesh connectivity and proxy support for polyglot architectures

Your day to day

Even if you start your day from the comfort of your home or drink your morning coffee in our office garden, your day will be quite similar when comes to tasks. Here are your daily responsibilities:

Framework Development

Develop and maintain the API SDK and core Toolkit components.
Deliver new capabilities focused on security, resilience, and observability.
Evolve the framework while ensuring backward compatibility.

Platform Integration

Integrate the framework with container platforms, messaging systems, API gateways, and service mesh solutions.
Build and maintain connectivity modules for different deployment models.

Developer Experience

Design intuitive APIs and configuration interfaces.
Create documentation, testing tools, and reference implementations to support adoption and best practices.

Community & Support

Support development teams using the SDK.
Review and contribute to community-driven improvements.

Tech Stack

Languages: Java 17+, Spring Boot, Scala
Build Tools: Maven, Gradle
Containers & Cloud: Kubernetes, OpenShift, Docker, Azure Container Registry
CI/CD: Azure DevOps, GitHub
Integration: Kafka, REST APIs, Service Discovery
Observability: Prometheus, Grafana, OpenTelemetry
Security: PKI, mTLS, Token-based Authentication, API Gateways

What you'll bring to the team

Required Qualifications

5+ years of Java development experience.
3+ years working with distributed systems and microservices.
Degree in Computer Science or equivalent practical experience.
Proven experience designing reusable frameworks, libraries, or platform components.
Strong technical communication and documentation skills.
Experience supporting developer platforms or engineering communities.

Preferred Qualifications

Experience building developer-facing frameworks or SDKs.
Solid knowledge of Spring Boot, Kafka, and event-driven architectures.
Familiarity with API Gateways, OpenAPI/Swagger, and microservices platforms.
Experience with Cassandra, PostgreSQL, or other distributed databases.
Background in financial services or other regulated industries.

Technical Expertise

Java Ecosystem: Java, Spring Boot, Maven, JVM fundamentals.
Distributed Systems: Microservices, Service Mesh, Resilience Patterns, OpenTelemetry.
Security: OAuth2, JWT, PKI, mTLS, Secure Coding (OWASP).
Cloud & DevOps: Docker, Kubernetes, CI/CD, Azure DevOps, Deployment Strategies.
Observability: Prometheus, Grafana, Centralized Logging, SLI/SLO/SLA monitoring.

If you want to deep dive into the processing of personal data conducted by ING Hubs Romania during the recruitment process and your rights related to it, read the privacy notices on our website (make sure to scroll until you reach the Data Protection section/ Candidates tab).

Die ING ist eine globale Bank mit über 60.000 Mitarbeitenden. Wir sind für rund 38 Millionen Privat-Kundinnen und Kunden sowie für unsere Geschäfts- und Firmenkunden in über 40 Ländern da. Wir sind bunt, vielfältig, digital und stolz darauf. Lust uns kennenzulernen?

Dich erwartet eine Kultur auf Augenhöhe, flexible Arbeitsweisen und die Chance, mit einem Job wirklich etwas zu verändern. Denn als globale Bank berühren wir das Leben von Millionen Menschen und wir streben danach einen positiven Einfluss auf die Gesellschaft und auf unseren Planeten zu haben.

Selbstbestimmtes Arbeiten ist unser täglich Brot: Wir vertrauen unseren Mitarbeitenden und ermutigen sie, ihr Ding zu machen – also ihre Karriere so zu gestalten, wie es für sie am besten ist.

Wir sind mehr als ein Arbeitgeber – wir sind innovativ, lösen Probleme, sind immer einen Schritt voraus und setzen uns dafür ein, einen echten Unterschied zu machen. Egal, ob Du gerade Deine Karriere startest oder die nächste große Herausforderung suchst, wir haben viele Jobmöglichkeiten, die Dich inspirieren und über Dich hinauswachsen lassen.

Deine Zukunft bei der ING beginnt mit einer Bewerbung. Bist du bereit, Teil der ING zu werden?

Wir haben viele Jobmöglichkeiten, die zu Deinen Fähigkeiten und Ambitionen passen! Verwende die Filter unter der Suchleiste, wie Standort und Jobtyp, um die perfekte Stelle zu finden. Starte jetzt mit der Suche und finde heraus, wohin Dich Dein nächster Karriereschritt führen könnte!

Senior Java Developer - API SDK Team @ING Hubs Romania