Hybrid Senior Backend Engineer

at ING

• Job title: Senior Backend Engineer
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Azure, Cloud, Distributed Systems, Grafana, Java, JUnit, Kafka, Kotlin, Mockito, OpenShift, Oracle, Spring, Spring Boot, SpringBoot, SQL
• Location requirements: Hybrid, Frankfurt, Germany

About the role

• Backend Engineer designing, developing, and maintaining backend applications using Spring Boot and Java for ING. Collaborating on architectural decisions and mentoring within an agile environment.

Responsibilities

• You'll design, develop, and maintain reliable backend applications and services using modern frameworks like Spring Boot, Java and Kotlin
• You contribute substantially to architectural decisions which ensure that our solutions are modular, scalable, and highly available as well as rock-solid and future-proof
• You build and run RESTful APIs end to end, from database and messaging integration to SDKs and service-discovery tools that teams across ING can plug into effortlessly
• You'll write automated tests, monitor and optimise applications using tools like Grafana and Kibana, and ensure resilience as well as high code quality
• You'll set up and maintain CI/CD pipelines, automate processes where you can and embrace modern tech – from cloud-native solutions to containerisation
• You actively participate in ceremonies and help us drive continuous improvement.
• You keep communication smoothly running – whether with external stakeholders or Product Owners in your team – and take your responsibilities one step further by providing mentorship and contributing to technical interviews

Requirements

• Degree in economics, information systems or equivalent qualification
• Long-standing practical experience in backend development, ideally in financial services or with large-scale platforms
• Proven skills in Java (17 or higher, ideally 21+), Spring Boot, Oracle databases, SQL, and API management
• Strong fundamentals in software development, OOP, design patterns, concurrency, and TDD as well as a deep understanding of microservice architectures and distributed systems
• Experience with CI/CD pipelines and tools (Azure DevOps), test automation (JUnit, Mockito), and Git
• Ability to lead technical initiatives and mentor others
• Skills in IT risk management, secure development practices, Containerisation (OpenShift), orchestration, and Kafka as well as with monitoring tools (Grafana, Kibana); cloud technologies and agile frameworks are a bonus
• Excellent problem-solving, communicative and stakeholder management skills
• Strong agile and collaborative mindset as well as the ability to lead technical initiatives and mentor others
• A passion for innovation and a feel for sustainable solutions
• Fluency in English, knowledge of German is a plus

Benefits

• Company pension plan
• capital-building offers
• free Deutschlandticket & bicycle leasING
• company restaurant
• Hybrid working: In addition to working in the office, you can also work remotely – within operational, regulatory and legal requirements.
• Individualized work schedule models
• sabbatical
• subsidization of nursing & childcare costs
• Personal budget for continuing education and development as well as health
• plus, a personal budget to set up your mobile working space