JobHabor

Senior Java Developer

Sigma Software
Location
Warsaw, Masovian Voivodeship, Poland
Workplace
Hybrid
Employment
Full Time
Salary
Apply on the employer’s site

Posted 1mo ago

  • Design, develop, and maintain backend services using Java and Spring Boot
  • Ensure high availability, scalability, and performance of distributed systems
  • Collaborate with cross-functional teams to define technical requirements and deliver solutions end-to-end
  • Implement integrations with internal and external systems
  • Participate in architectural discussions and contribute to system evolution in a microservices environment
  • Monitor, troubleshoot, and optimize services in production
  • Ensure compliance with security, operational, and engineering standards
  • Drive continuous improvement in code quality, testing, and deployment practices
  • 5+ years of commercial experience with Java and Spring Boot
  • Strong experience with MySQL and Kafka
  • Proven track record working with microservices architecture in high-traffic, high-load systems
  • Experience developing high-performance backend solutions for transaction-heavy platforms
  • Ownership mindset with ability to deliver services end-to-end
  • Excellent communication skills in English (C1 level), both written and verbal
  • Experience with Kotlin

Skills

  • Java
  • Spring Boot
  • MySQL
  • Kafka
  • Kotlin

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