Medior Java Developer

 Rotterdam, The Netherlands

 Full-time

English (required), Dutch (optional)

Are you a Java Developer looking for a challenge where you can make a real impact? Do you thrive in an innovative environment where you can develop scalable, high-performance applications? At Float IoT, we are expanding our IoT Gatekeeper team and looking for a Medior Java Developer to help us design and optimize our IoT infrastructure for water utilities.

In this role, you will be working on mission-critical systems that handle real-time device communication, data security, and large-scale network monitoring. You’ll collaborate with a talented team to build seamless and efficient software solutions.

If you’re passionate about backend development, distributed systems, and IoT, this is your opportunity to grow and make a tangible difference in a field that matters.

What you’ll do

  • Build, test, and improve Java-based backend systems for the IoT Gatekeeper platform.
  • Develop scalable and secure RESTful APIs.
  • Implement and maintain Apache Kafka pipelines for real-time data streaming.
  • Contribute to water conservation and infrastructure efficiency through advanced IoT applications.

What you bring

  • 4+ years of experience in Java development.
  • Experience with Docker, Kafka, and PostgreSQL.
  • A quick learner with the ability to adapt to new technologies and challenges.
  • A-player with a strong track record of delivering high-quality software.

About the IoT Gatekeeper

The IoT Gatekeeper is Float IoT’s dedicated IoT platform for managing and securing connected water utility devices. It provides:

  • Centralized device authentication for secure access management.
  • Event-driven data processing using Apache Kafka.
  • Real-time monitoring and analytics for large-scale water distribution networks, handling hundreds of millions of messages.
  • A secure and scalable architecture using a modern tech stack:

Tech Stack:

  • Java 11
  • Apache Kafka
  • TimescaleDB (PostgreSQL)
  • React (TypeScript)
  • Docker

What we offer

  • Exciting, fast-paced projects: Work on innovative IoT solutions that have a real-world impact.
  • A mission that matters: Help shape the future of water management and sustainability.
  • A culture that rewards initiative: Your ideas and input matter. Take ownership of your work and make a difference.
  • Attractive compensation and benefits: Competitive salary, flexibility, and a supportive team of top-tier engineers.

Interested?

Do you recognize yourself in this role and do you want to be part of our enthusiastic team? Then send your CV, other relevant documents such as Git if applicable, to info@float-iot.nl. For questions you can contact via the same e-mail address.