Senior Full‑Stack Engineer

PAJ is a leading manufacturer, distributor, and consultant in GPS tracking technology, based in Windeck-Hurst. We offer the perfect GPS tracker for almost any application. We are a dynamic, growing company with many creative and passionate minds, both in Germany and abroad. We thrive on open communication and exceptional personalities. If you enjoy variety and challenges, you'll feel right at home with us!

• Backend Development (Java / Quarkus): Design, implement, and optimize backend services using Java and Quarkus (including Netty and data protocols where applicable), with a focus on performance, reliability, and clean architecture.
• Frontend Development (Vue.js / Vite): Build and maintain the web frontend using Vue.js and Vite with JavaScript / TypeScript, ensuring a solid user experience and clean integration with backend APIs.
• Database Administration: Deploy, monitor, and maintain scalable database clusters, including MySQL, MongoDB, Cassandra/ScyllaDB, and Redis, ensuring high availability and performance.
• Streamline Data Flow: Manage and enhance data streaming and messaging systems with Kafka and RabbitMQ for reliable and efficient communication.
• Infrastructure Oversight: Administer Linux servers, ensuring their security, reliability, and smooth operation, while implementing and maintaining cutting-edge open-source solutions.

• Technical Expertise: Strong backend experience with Java and Quarkus; solid frontend experience with Vue.js and Vite using JavaScript / TypeScript; comfortable integrating systems via APIs.
• Database Specialist: Strong experience with MySQL and familiarity with MongoDB, Cassandra/ScyllaDB, and Redis, ideally including deploying and maintaining database clusters.
• Infrastructure Savvy: Hands-on Linux administration skills and the ability to implement open-source tools effectively in a DevOps environment.
• Problem Solver: Adept at identifying and resolving system anomalies, with a proactive approach to ensuring system stability and reliability.
• Team Player: You have a self-sufficient way of working and are always ready to support your team with your expertise.
• Language: Proficient English (Required), German (nice to have)