Senior Java Developer

About the Role

As a Senior Java Developer in KSB’s Digital Unit, you will be at the forefront of innovation, contributing to cutting-edge projects in Industrial IoT (IIoT), factory digitalization, sales automation, and digital sales platforms. You will work in a collaborative, international environment with teams across Germany and other European countries.

We are looking for a passionate team player with strong technical expertise, leadership qualities, and a commitment to delivering high-quality, maintainable, and scalable software solutions.

Key Responsibilities

• Lead the design and development of complex software components using modern Java technologies.
• Apply software architecture principles and design patterns to build robust systems.
• Guide and mentor junior and mid-level developers through code reviews and joint implementation.
• Collaborate with cross-functional teams across geographies.
• Participate in the full software development lifecycle (Agile or Waterfall).
• Ensure high standards of code quality, performance, and security.
• Contribute to CI/CD pipelines and containerized deployments in cloud and on-prem environments. Required Experience
• Minimum 6 years of hands-on experience in Java development.
• Participation in more than 3 customer projects.
• Proven experience in:
• Designing non-trivial software components.
• Applying design patterns and architectural principles.
• Leading or mentoring development teams. Technical Skills (at least 3 from each category)
• Frameworks & Tools:
• Spring / Spring Boot / Spring REST
• Hibernate, JUnit
• Maven, Jenkins, GIT
• Swagger,
• Protocols & Data Formats:
• HTTP, MQTT, OAuth
• XML, JSON, JWT, OData
• Infrastructure & DevOps:
• Docker, Docker Swarm, Kubernetes
• Kafka, ActiveMQ
• Azure (IaaS, PaaS, Functions), AWS (Lambda, S3)
• Databases:
• MS-SQL, Oracle, PostgreSQL, MySQL
• Hadoop, Apache Spark, SAP HANA, Redis Other Qualifications (at least 3 from each category)
• Strong understanding of SDLC and Agile methodologies
• Experience with code reviews, JIRA/Confluence
• Familiarity with REST APIs, API gateways
• CI/CD practices and Infrastructure as Code
• Container orchestration with Kubernetes or Docker Swarm