Senior Full-Stack Developer – Customer Data

About the role

ING is looking for a technically polyglot Senior Full-Stack Developer to join its Customer Data team in Brussels. The team works on systems handling critical customer data across several business domains, with a strong focus on risk management, resilience and performance. You will contribute to both backend and frontend development.

Key responsibilities

• Design solutions that meet complex business requirements.
• Code smart, efficient and resilient applications.
• Collaborate across departments to ensure alignment and integration.
• Keep learning and share knowledge, embedding best practices and lessons learned.

Required profile

• Master's degree or equivalent experience in Computer Science or IT.
• Certifications and/or proven proficiency in software development.
• 8+ years of experience in Agile IT projects.
• Excellent communication skills in English, written and spoken.

Required skills

• Strong expertise in Java 21, Spring Boot, Kafka and Maven; knowledge of the CQRS pattern is a plus.
• Familiarity with CI/CD pipelines using Azure DevOps and GitHub, and monitoring tools such as Kibana, Grafana and Prometheus.
• Knowledge of additional languages (e.g. Python) and willingness to learn new ones.
• Awareness of security and IT risk, and resilience patterns.