# Senior Java Software Engineer

> COSMOTE GLOBAL SOLUTIONS NV · Luxembourg, Luxembourg · Contract · Posted 2026-08-27

**Workplace:** on_site

## Description

**COSMOTE Global Solutions NV** is seeking experienced **Senior Java Software Engineers** to join our innovative ICT team. As part of the OTE Group of Companies, we deliver comprehensive ICT solutions and services designed to drive digital transformation and operational excellence.  
[](https://apply.workable.com/cosmote-global-solutions-nv/)**Key Responsibilities:**

-   Design and implement robust backend solutions using Java and Spring Boot.
-   Lead the technical design of new features and enhancements.
-   Coordinate and mentor other Java developers within the team.
-   Review code and ensure compliance with coding standards and best practices.
-   Drive software quality through design reviews, testing and continuous improvement.
-   Collaborate closely with Solution Architects, Business Analysts, QA engineers and DevOps engineers.
-   Analyze complex functional and technical requirements and translate them into scalable solutions.
-   Ensure maintainability, performance and security of developed solutions.
-   Support CI/CD processes and participate in release activities.
-   Provide second-line production support, root cause analysis and resolution of complex production issues.
-   Take ownership of technical decisions and proactively identify opportunities for improvement.

## Requirements

Bachelors Degree at a relevant field

7+ years of relevant working experience

Specific excellent experience and technical knowledge in:

-   Java 17
-   Spring Framework / Spring Boot
-   JPA / Hibernate
-   SQL
-   Design and implementation of REST APIs

**Strong experience with:**

-   Apache Kafka or other messaging technologies
-   Maven
-   JUnit
-   CI/CD pipelines
-   Git

**Nice to Have:**

-   Experience in the financial services or banking sector
-   Azure DevOps
-   Liquibase
-   SOAP web services

## Apply

[Apply at COSMOTE GLOBAL SOLUTIONS NV](https://apply.workable.com/cosmote-global-solutions-nv/j/1FEC238057/apply)

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