Back-end Software Engineer (Java)

To join a team of 2-5 people and develop projects related to roaming and VAS knowledge of SIP/RTP protocols for global  telecommunications operators based in Poland.  

• Developing a product using SIP / RTP protocols  
• Developing other Java applications  
• Assisting in the implementation of new projects  
• Helping to build and shape the next generation of APIs and backend systems 
• Influencing and driving best practices and technical excellence within your team and across the organization 
• Scoping, defining and leading design and implementations across teams  
• Taking vague product requirements and being responsible for breaking them down into smaller components  
• Prioritizing and coordinating work 
• Working with the QA team to ensure the features you’re shaping are of high quality
• Writing unit and integration tests 
• Mentoring other team members and contributing to team growth 
• Learning something new every week, whether it’s a new technology, unfamiliar platform or a quirk of a language . 

• 5+ years’ professional experience building backend systems and API gateways 
• Strong Java experience and ability to dive into any language or technology 
• Strong experience building and maintaining API gateways 
• Experience with databases like Postgres and familiarity with Redis and Kafka 
• Experience working with modern cloud-based microservice architectures 
• Experience building and debugging complex systems in a team environment 
• Ability to write readable and testable code 
• Strong attention to detail and a  desire to continually improve 

Knowledge of:

• Java 14 (min. Java 8) 
• Spring/Spring Boot Framework 
• SQL database 
• Eureka 
• GIT/SVN 
• Maven 
• Jenkins 

• Knowledge of SS7 stacks and postgresql databases  
• Project management experience from a programming point of view – assigning and delegating tasks 
• CI/CD processes 
• SQL 
• MySQL 
• Angular 2+