Senior Full Stack Engineer - Java/Kotlin & React

TELEKOM HELLENIC BUSINESS SOLUTIONS SA; Brussel; Sur place; EUR 90 000 - 130 000; Plein temps

Résumé du poste

COSMOTE Global Solutions NV seeks a highly skilled Full Stack Developer to design, build, and maintain scalable web applications across client-side and server-side components. You will collaborate with cross-functional teams to deliver high-quality software solutions, implement robust APIs, and ensure secure, high-performance systems.

The role requires deep experience in Java/Spring Boot, Kotlin, modern front-end frameworks, and a strong focus on API-driven development, security practices, and

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field.
• Minimum of 12 years of professional experience as a Full Stack Developer.
• Proficiency in backend technologies such as Java (Spring Boot), Kotlin, Vert.x, or similar frameworks.
• Experience with front-end technologies including JavaScript, React, Angular, or Vue.js.
• Strong understanding of RESTful APIs, microservices architecture, and API-driven development.
• Experience with databases such as MongoDB, PostgreSQL, Virtuoso Triple Store, and OpenSearch.
• Familiarity with containerization and orchestration tools like Docker and Kubernetes.
• Knowledge of security standards including OpenID Connect, OAuth2, TLS, and Keycloak.
• Experience with security testing tools and dependency management (SAST, DAST, Fortify, SonarQube, Sonatype, Dependency-Track, Maven).
• Excellent problem-solving skills and ability to work effectively in a multicultural and multidisciplinary team environment.
• Strong communication skills and proficiency in English (C1 or higher).
• Familiarity with collaboration tools such as JIRA, Confluence, Office 365, and SharePoint.

Responsabilités

• Design, develop, and maintain scalable web applications both on client-side and server-side.
• Collaborate with cross-functional teams including front-end developers, back-end developers, designers, and product managers to deliver high-quality software solutions.
• Develop user-friendly interfaces and efficient back-end logic using modern frameworks and technologies.
• Implement APIs and services to support front-end functionalities and integrations.
• Optimize applications for maximum speed and scalability.
• Ensure application security and data protection best practices are followed.
• Write clean, maintainable, and well-documented code.
• Troubleshoot, debug, and resolve software defects and issues.
• Participate in code reviews and contribute to continuous improvement processes.
• Stay current with emerging technologies and industry trends to drive innovation.

Connaissances

Java

Spring Boot

Kotlin

Vert.x

JavaScript

React

Angular

Vue.js

REST APIs

Microservices

MongoDB

PostgreSQL

Virtuoso

OpenSearch

Docker

Kubernetes

OpenID Connect

OAuth2

TLS

Keycloak

SAST

DAST

Fortify

SonarQube

Sonatype

Dependency-Track

Maven

English (C1)

Formation

Bachelor's Degree in Computer Science

Outils

JIRA

Confluence

Office 365

SharePoint

Description du poste

COSMOTE Global Solutions NV seeks a highly skilled Full Stack Developer to design, build, and maintain scalable web applications across client-side and server-side components. You will collaborate with cross-functional teams to deliver high-quality software solutions, implement robust APIs, and ensure secure, high-performance systems.

The role requires deep experience in Java/Spring Boot, Kotlin, modern front-end frameworks, and a strong focus on API-driven development, security practices, and