14 - Senior Java Developer

Are you the kind of engineer who gets more energy from a clean implementation than from a packed calendar of brainstorm sessions? Our client is a ~50-person independent software company that develops and maintains their own ERP/ITSM platform and a compute/automation platform for large-scale device management. They are looking for a Senior Java Developer with genuine passion for their tech stack - someone who enjoys going deep, staying close to end users, and taking full end-to-end ownership of their products.

Key Responsibilities

Work largely independently on clearly scoped technical projects including APIs, protocols, infrastructure integrations, and internal tooling
Develop Java solutions beyond standard Spring Boot and Hibernate - including secure tooling, IoT solutions with MQTT and gRPC, and network-level protocols with Netty
Maintain and contribute to an htmx-based web frontend built primarily in Java
Take active responsibility for reliability, scalability, security, and maintainability - including monitoring, tracing, error handling, concurrency, and network impact
Required Skills and Experience
At least 6 years of recent hands-on Java experience, with a track record that goes beyond standard Spring Boot and Hibernate setups
Solid knowledge of general computing and *nix systems (Linux, FreeBSD, etc.) - comfortable in a terminal, able to build software from source and troubleshoot low-level issues
Ability to design software that is maintainable, predictable, scalable, and secure - not just functional
Familiarity with tools and technologies such as Java 21/25, Netty, JOOQ, gRPC-Java, Micrometer, Dagger, PostgreSQL, MQTT, Grafana, Prometheus, Envoy, and containerized infrastructure
HBO or university degree in a relevant field