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Adtran is looking for a Software Engineer to join the Mosaic Network Controller team. The role involves designing, developing, and maintaining both new and existing features in the Mosaic Network Controller, as well as creating and executing developer‑level tests. Our system manages WDM Optical, Ethernet, and Synchronization & Timing networks, supporting our customers in operating their solutions efficiently and reliably. Mosaic is used globally by Tier 1 Network Service Providers, Regional Operators, Data Center Providers, and Enterprises that prioritize security, performance, speed, and high availability. Participate in the full lifecycle of a Java application: design, implementation, troubleshooting Develop and execute unit tests and resolve reported defects Design, implement, and maintain automated tests Design and execute functional tests Document and track defects using test and development management systems Technology Stack Java, JavaScript Red Hat Enterprise Linux Bachelor’s degree in Computer Science, Computer Engineering, Software Engineering, Information Science, Electrical Engineering, or equivalent Minimum 2 years of practical experience in developing applications using Java Hands-on experience with unit and automated testing frameworks such as JUnit or Mockito Basic knowledge of containerization technologies, preferably Docker Working knowledge of Linux operating systems, especially Red Hat Enterprise Linux Good written and spoken English flexible and open‑minded Familiarity with Linux OS (especially RHEL‑based) Stable employment based on an employment contract (turnover rate below 4%)
~Flexible working hours and hybrid work model (presence in the Gdynia office 3 days a week)
~ English lessons during working hours
~ Internal training program supporting development needs
~ Private healthcare at Medicover (extended package available for employees and family members)
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