Senior Fullstack Java Engineer - Cloud Modernization & NIS2

keystone-solutions; Sint-Joost-ten-Node; Hybride; EUR 65 000 - 90 000; Plein temps

Résumé du poste

Keystone Solutions is seeking a Senior Fullstack Java Developer for a consultancy mission at a client site in Belgium. Remote work is possible (2 days per week) after 2 weeks of on-site presence.

The assignment runs 01/10/2026 - 31/12/2026 for 3 months, full time. You will work on modernizing architectures, reducing technical debt, and aligning legacy with cloud/hybrid solutions while ensuring NIS2 compliance.

Qualifications

• 5-7+ years in complex IT programming.
• Expertise in modern Java (Spring, microservices, API-driven, event-driven).
• Skills in containerization and orchestrators (OpenShift).
• Advanced knowledge of relational databases (MySQL) and data modeling.
• Knowledge of integrations: messaging, REST/GraphQL, event-driven.
• Understanding of resilient architectures and high availability.
• Familiarity with security standards (NIS2).

Responsabilités

• As a Programmer: Develop and/or adapt IT applications for efficient tools for end-users.
• As an Analyst-Programmer: Analyze technical specifications to choose the best solution and execute analysis for projects.
• As a Specialist: Conduct technical analyses, advise on integrations, data models, performance, and scalability, support adoption of technologies and architectural patterns, and resolve complex issues.

Connaissances

Java Expert

Spring Framework

API driven

Event driven

OpenShift

Docker

MySQL

REST API

GraphQL

Security NIS2

Git

Formation

Master's degree in Computer Science

Outils

Jira

Confluence

IntelliJ

Maven

Git

REST API

Swagger/OpenAPI

OpenShift

JUnit

Flyway

SQL

Lombok

Angular

React

Description du poste

Keystone Solutions is seeking a Senior Fullstack Java Developer for a consultancy mission at a client site in Belgium. Remote work is possible (2 days per week) after 2 weeks of on-site presence.

The assignment runs 01/10/2026 - 31/12/2026 for 3 months, full time. You will work on modernizing architectures, reducing technical debt, and aligning legacy with cloud/hybrid solutions while ensuring NIS2 compliance.