Mission-Critical Backend Engineer | Java/Kotlin + Spring Boot

Alium; Rotterdam; On-site; EUR 55,000 - 80,000; Full time

Job summary

Alium is seeking a Medior Backend Developer to bolster our Harbour Master’s PCM development team and modernise HaMIS, a mission-critical system supporting operational processes.

You will develop new functionality using Spring Boot, Java and Kotlin, build REST/SOAP integrations, and work with microservices, automated testing and clean architecture. Strong Dutch is needed, with on-call rotation after training.

Qualifications

• 3+ years of backend development experience with Java/Kotlin & Spring Boot.
• 3+ years with microservices, system integrations, testing and production troubleshooting.
• Strong communication and a proactive, collaborative attitude.
• Good command of Dutch.
• Willingness to participate in an on-call rotation after training.
• Experience with Kubernetes, CI/CD, GitLab, ActiveMQ, Grafana, Prometheus, ELK/OpenSearch, OpenTelemetry or 24/7 mission-critical environments is a strong plus.

Responsibilities

• Develop new functionality using Spring Boot, Java and Kotlin.
• Build and optimise REST/SOAP integrations, messaging and event-driven architectures.
• Work with microservices, automated testing and clean architecture.
• Improve logging, monitoring, tracing and alerting.
• Analyse and resolve production incidents and disruptions.
• Contribute to technical solutions, innovation and continuous improvement.
• Collaborate with developers, business consultants, testers and external stakeholders.

Skills

Java/Kotlin & Spring Boot

Microservices

Production troubleshooting

Communication skills

Dutch language

On-call readiness

Tools

Kubernetes

CI/CD

GitLab

ActiveMQ

Grafana

Prometheus

ELK/OpenSearch

OpenTelemetry

Job description

Alium is seeking a Medior Backend Developer to bolster our Harbour Master’s PCM development team and modernise HaMIS, a mission-critical system supporting operational processes.

You will develop new functionality using Spring Boot, Java and Kotlin, build REST/SOAP integrations, and work with microservices, automated testing and clean architecture. Strong Dutch is needed, with on-call rotation after training.