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Senior / Principal Software Engineer - Java, Spring Boot & Kafka (80-100%)

Callista Group AG
Contract type
Ongoing
Work mode
Hybrid · Bern, Switzerland
Experience
Senior · 5+ years

Job description

A Principal-level Java/Spring Boot software engineer with strong Kafka expertise to build high-performance, scalable applications processing very large volumes of data for a client of Callista Group AG.

At a glance

Work mode
Hybrid · Bern, Switzerland
Languages
German – very good, English – good

What you'll do

  • Develop and optimize high-performance backend applications with Java, Spring Boot and Kafka
  • Take technical responsibility for demanding solutions and actively shape the architecture and design of distributed systems
  • Design and implement scalable solutions for reliably processing very large data and transaction volumes
  • Analyze performance problems and develop sustainable technical improvements
  • Independently develop and convincingly represent technical decisions in collaboration with architects, developers and other stakeholders
  • Ensure high code quality through automated tests and proven development practices
  • Provide technical support to other developers and actively transfer knowledge within the team

What we're looking for

  • Deep, current hands-on experience with Kafka and Java, applied regularly in production projects
  • 5+ years of experience in professional software development with very solid knowledge of Java and Spring Boot
  • Proven experience with high-performance systems and processing large data volumes
  • Very good knowledge of software architecture, distributed systems and performance optimization
  • Experience with SQL, REST APIs, Docker, Kubernetes and GitLab
  • Knowledge of unit and integration testing
  • Completed degree in computer science (university/university of applied sciences) or comparable qualification
  • Works independently, in a structured and solution-oriented way
  • Can explain complex technical matters understandably, justify decisions and convince various stakeholders
  • Very good German and good English skills

Nice to have

  • Ideally Splunk and Citrus

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