• Identifying opportunities to improve performance and reliability of our backend services
• Working on high-volume, low-latency applications for mission-critical systems
• Supporting continuous improvement by investigating alternatives and technologies and presenting these for architectural review
• Collaborating with other teams across the business
• Working according to development standards & best practices  
• Writing well designed, testable, efficient code
• Translating technical and non-technical requirements as required 
• Driving improvements in KPI's (code quality, defects, performance, security, resiliency)
• Collaborating with QA to ensure tests are aligned with the solution and complement tests written by development 

• Proven working experience in Java development (min. 3 years) 
• Hands on experience in designing and developing applications using Java 8+ platforms
• Object Oriented analysis and design using common design patterns
• Knowledge about JVM internals and JDK tools – GC, heap dumps, Java Memory Model, JMX, byte code manipulation
• Experience with profiling and diagnostic tools (at least some) – VisualVM, JProfiler, Java Flight Recorder, Java Mission Control, Eclipse Memory Analyzer, jheap, jmap, jhat, jps, etc.
• Profound insight of Java 8, 11, 12 and functional programming
• Experience with high traffic systems and products
• Desirable: understanding enterprise applications operational aspects (scalability, monitoring, zero downtime upgrades etc.)
• Experience with test-driven development
• Excellent English skills (written and spoken)
• Experience in / knowledge of Agile delivery principles and practices such as Scrum or Kanban
• Self-reliant, communicative, accurate

10k PLN as a signup bonus with first salary if you join us till the end of September