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COSMOTE Global Solutions NV is at the forefront of the ICT industry as a trusted member of the OTE Group of Companies, dedicated to delivering comprehensive ICT Solutions and Services. We are looking for a talented Back-end Developer to enhance our team.
As a Back-end Developer, you will play a critical role in designing scalable applications to meet the evolving needs of our clients. Your expertise will ensure the smooth integration of server-side logic with front-end components, enabling our applications to function seamlessly and efficiently.
Key Responsibilities:
As a Back-end Developer, you will play a critical role in designing scalable applications to meet the evolving needs of our clients. Your expertise will ensure the smooth integration of server-side logic with front-end components, enabling our applications to function seamlessly and efficiently.
Key Responsibilities:
- Development of back-end website applications.
- Integration of user-facing elements developed by a front-end developer with server side logic.
- Implement core business logic.
- Creation of servers and databases for functionality.
- Design and implementation of data storage solutions.
- Understanding and implementation of security and data protection.
- Optimization of the application for maximum speed and scalability.
- Design and develop APIs.
- Participating in the design and creation of scalable software.
- Taking lead on projects, as needed.
- Maintenance of code integrity and organisation.
- Writing clean, functional code on the back-end.
- Compile and analyse data, processes, and codes to troubleshoot problems and identify areas for improvement.
- Testing and fixing bugs or other coding issues
- Meet both technical and consumer needs.
- Write technical documentation
- Bachelor's Degree in IT or a related field
- At least 17 years of experience in IT
- At least one year of expertise in back end: Vert.x, Kotlin , Java (> 17) , Spring Boot (WebFlux), Hibernate.
- At least one year of expertise in Architecture & Integration: Microservices Architecture, API-driven Development, AS4
- At least one year of expertise in Database: MongoDB , PostgreSQL, Virtuoso Triple Store, OpenSearch
- At least one year of expertise in Containerization & Orchestration: Docker, Kubernetes
- At least one year of expertise in Security: OpenID Connect, OAuth2, TLS, Keycloak
- At least one year of expertise in Security Testing & Dependency Management: SAST, DAST, Fortify, SonarQube, Sonatype, Dependency-Track, Maven
- At least one year of expertise in Collaboration & Productivity Tools: JIRA, Confluence, Office 365, SharePoint
Key Skills
Ranked by relevance
server
containerization
microservices
spring boot
postgresql
confluence
storage
kotlin
docker
java
jira
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- Posted
- Feb 25, 2026
- Type
- Contract
- Level
- Entry
- Location
- Brussels
- Company
- Cosmote Global Solutions
Industries
IT Services
IT Consulting
Categories
Other
Related Jobs
3 roles aligned with this opportunity
View Job Details
Related
DevSecOps Expert
2026-05-28
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View Job Details
Related
Dotnet Developer
2026-05-28
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Web Developer
2026-05-27
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