Senior Java Developer (m/w/d)

We are looking for an experienced Senior Java Developer to join a DevOps team working on a business-critical backend platform that processes timetable and infrastructure information and makes it available in real time to operational systems. The platform consists of modern, independently deployable components and plays a key role in supporting day-to-day operations. As part of the current transformation roadmap, the team is focused on further developing the platform, supporting system integrations, migrating workloads from a private cloud environment to Azure/AKS, and delivering new functionality for critical operational processes, including ERTMS and integrated operational control. This role requires a hands-on senior engineer who can combine technical expertise with a pragmatic approach and contribute directly to the successful delivery of these initiatives.
Responsibilities:
Develop Java and Spring Boot components and integrations to support further platform development;
Support consuming systems in connecting to a new message format;
Deliver the migration to Azure and Azure Kubernetes Service (AKS);
Deliver new functionality for critical operational processes, including ERTMS and integrated operational control;
Critically assess technical choices for simplicity, quality, and feasibility;
Apply and promote modern engineering, testing, and DevOps practices within the team;
Use AI tools purposefully for development, testing, refactoring, and analysis, and help the team adopt these practices;
Work hands-on across the full software lifecycle, including design, development, testing, deployment, and continuous improvement;
Work closely with technical leads while constructively challenging existing decisions and solution directions where appropriate;
Help the team make stronger technical decisions and accelerate delivery from analysis to implementation.
HBO or WO level of thinking and working (Bachelor's or Master's degree level);
Minimum 5 years of recent experience as a Senior Java Developer in a complex IT environment;
Deep, demonstrable hands-on experience with Java and Spring Boot;
Extensive, demonstrable experience with Microsoft Azure and container platforms, preferably Azure Kubernetes Service (AKS);
Extensive, demonstrable experience with asynchronous messaging, REST services, and integrations within distributed systems;
Extensive, demonstrable experience with relational databases, preferably PostgreSQL;
Demonstrable experience with automated testing, CI/CD, and DevOps practices;
Experience working with business-critical software requiring high levels of availability and reliability;
Demonstrable experience using AI tools responsibly and effectively within software development and coaching colleagues in their adoption;
Excellent command of the Dutch language (mandatory);
Hands-on, pragmatic, and results-oriented approach;
Ability to move quickly from analysis to execution;
Ability to influence colleagues through technical seniority and challenge existing ways of working constructively.
Preferred
Experience with complex real-time or mission-critical systems, for example within rail, logistics, or traffic management environments;
Experience with migrations from private cloud environments to Azure.
Additional Information
Participation in an on-call support rotation is part of the assignment.
This assignment is not open to freelancers, independent contractors, or self-employed professionals (ZZP).

Employment type
Full-time

Work arrangement
Hybrid