Junior Java Developer

 Rotterdam, The Netherlands

 Full-time

English (required), Dutch (optional)

Are you ready to accelerate your career as a Java Developer and work on cutting-edge IoT solutions? At Float IoT, we are looking for a Junior Java Developer to join our IoT Gatekeeper team. This is an exciting opportunity to gain hands-on experience in backend development, and real-time data processing, all while working in a supportive and collaborative environment.

As part of the team, you’ll contribute to the development and optimization of the IoT Gatekeeper, our secure, scalable platform that enables water utilities to manage their connected devices efficiently. You’ll work with modern technologies, learn from experienced developers, and have a clear path for career growth.

If you are detail-oriented, eager to learn, and passionate about problem-solving, we’d love to hear from you!

What you’ll do

  • Develop and maintain Java-based backend services for the IoT Gatekeeper.
  • Methodically identify and resolve issues, ensuring high system reliability.
  • Gain experience with RESTful APIs, PostgreSQL, and distributed systems.
  • Collaborate with senior developers and grow your skills in scalable backend architecture.
  • Work on solutions that securely manage thousands of connected devices in water utility networks.

What you bring

  • 2+ years of Java development experience.
  • Strong attention to detail and a methodical approach to debugging.
  • Familiarity with Git and version control best practices.
  • Eager to learn about Kafka, TimescaleDB (PostgreSQL), and Docker – experience is a plus!
  • Enthusiasm for IoT, distributed systems, and real-world problem-solving.

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, and other relevant documents such as Git if applicable, to info@float-iot.nl. For questions you can contact via the same e-mail address.