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