Back-end Developer

COSMOTE GLOBAL SOLUTIONS NV; Brussel Hoofdstad; Sur place; Plein temps

Résumé du poste

A leading ICT Systems Integrator in Brussels is seeking an experienced Back-end Developer to join their team. The ideal candidate will have over 10 years of expertise in back-end development, specializing in technologies such as Java, Kotlin, and Vert.x. You will work on designing APIs, integrating user-facing elements, and ensuring application security. Strong experience in databases like MongoDB and PostgreSQL, as well as tools such as Docker and Kubernetes, is essential. This role offers a dynamic work environment with opportunities for growth.

Qualifications

• At least 10 years of specific expertise in back-end development.
• Strong experience with Vert.x, Kotlin, and Java (≥ 17).
• Expertise in microservices architecture and API-driven development.
• Experience with MongoDB, PostgreSQL, and OpenSearch.
• Solid knowledge of containerization and orchestration with Docker and Kubernetes.
• Experience in security protocols such as OpenID Connect and OAuth2.
• Ability to adapt to changes and participate in multi-lingual meetings.

Responsabilités

• Develop back-end web applications and implement core business logic.
• Integrate user-facing elements and optimize applications for speed.
• Design and develop APIs while maintaining code integrity.
• Compile and analyze data to troubleshoot problems and improve processes.
• Write technical documentation.

Connaissances

Back-end Development

Microservices Architecture

API Integration

Database Management

Containerization with Docker

Security Protocols

Collaboration Tools (JIRA, Confluence)

Formation

Bachelor’s Degree in related field

Outils

Vert.x

Kotlin

Java (≥ 17)

Spring Boot (WebFlux)

Hibernate

MongoDB

PostgreSQL

Docker

Kubernetes

OpenID Connect

OAuth2

TLS

Keycloak

Fortify

SonarQube

Description du poste

Cosmote Global Solutions, as a member of OTE Group of Companies, is an ICT Systems Integrator delivering a broad range of ICT Solutions and Services.

CGS provides a broad range of ICT Services focusing on: Cloud, Data Centre operations, Networking, Cybersecurity, BI and Data Warehouse, Big Data, Service Desk, Proactive Monitoring, Operations and Support, Service Management, Project and Programme Management, and Professional Services.

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

Qualifications

• Bachelor’s Degree on a related field.
• At least 10 years of specific expertise in Back-end: Vert.x, Kotlin , Java (> 17) , Spring Boot (WebFlux), Hibernate.
• At least 6 years of specific expertise in Architecture & Integration: Microservices Architecture, API-driven Development, AS4.
• At least 6 years of specific expertise in Database: MongoDB , PostgreSQL, Virtuoso Triple Store, OpenSearch.
• At least 6 years of specific expertise in Containerization & Orchestration: Docker, Kubernetes.
• At least 5 years of experience in Security: OpenID Connect, OAuth2, TLS, Keycloak.
• At least 6 years of specific expertise in Security Testing & Dependency Management: SAST, DAST, Fortify, SonarQube, Sonatype, Dependency-Track, Maven.
• At least 10 years of specific expertise in Collaboration & Productivity Tools: JIRA, Confluence, Office 365, SharePoint
• Ability to apply high quality standards to all tasks.
• Ability to participate in multi-lingual meetings, good communication skills.
• Capability of working in an international/multicultural environment, rapid self-starting capability and experience in working in a team, understanding the needs, objectives, and constraints of those in other disciplines and functions.
• Ability to adapt to unplanned changes or decisions.
• Ability to understand, speak and write in English C2.