Job Description

Mission Overview:

Our client operates in a complex technological environment that combines a historical application landscape with modern components. This consultancy mission at the client site, representing Keystone Solutions, involves a structural transformation of the IT landscape, modernization of architectures, reduction of technical debt, adoption of Cloud technologies, and compliance with regulatory standards, including NIS2. The existing applications cover critical areas such as unemployment regulation, payments, debt management, and financial and accounting processing. Some of these systems rely on legacy technologies, while new Cloud/hybrid architectures are emerging. The consultant will play a key role in harmonizing, securing, and aligning these architectures.

Main Responsibilities:

• Support development teams by performing functional analyses with a technical touch within business projects.
• Advise on integrations, data models, performance, and scalability.
• Assist the team in adopting technologies and architectural patterns.
• Initiate or validate Proof-of-Concepts.
• Governance and quality: Organize and lead design reviews.
• Ensure compliance with architectural standards and best practices.
• Continuously improve maintainability, security, and decoupling of systems.
• Document processes and decisions.
• Collaboration and change management: Ensure communication between business, development, security, and infrastructure teams.
• Clearly explain technical choices in an accessible manner.
• Support collective decision-making and manage the convergence of visions.
• Contribute to the skill enhancement of teams.
• Expertise and problem-solving: Analyze and resolve business problems.
• Ensure coherence between legacy and modern components.
• Vision and design: Translate enterprise directions into concrete technical models.
• Design aligned, performant, and maintainable application and data architectures.
• Ensure decisions support business objectives.
• Security, compliance, and resilience: Integrate security from the design phase (security by design).
• Translate NIS2 requirements into concrete technical measures.
• Promote secure coding practices and mechanisms for supervision and auditability.

Working conditions: Remote work is possible after 2 weeks of service within the organization.

Why Join Keystone Solutions:

As a consultant at Keystone Solutions, you will engage in dynamic projects that offer a variety of challenges across different client environments. This role provides turbo-charged learning opportunities and a commitment to your career growth within our framework. Being a

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.

Duration: 01/10/2026 - 31/12/2026 3 months • (full time)

Skills required:

• Compétences « techniques data »: modélisation, gestion data, intégration et sécurisation - Level: Confirmed - Most recent: Any time
• Compétences en matière de communication et de relations interpersonnelles - Level: Confirmed - Most recent: Any time
• Connaissance approfondie Atlassian/Jira - Level: Confirmed - Most recent: Any time
• connaissance des bases de données relationnelles (MySQL) et du datamodellering - Level: Confirmed - Most recent: Any time
• Excellente capacité d'analyse et de synthèse - Level: Confirmed - Most recent: Any time
• Expérience au sein d’un service public fédéral - Level: Confirmed - Most recent: Any time
• Expertise en Java moderne (Spring, microservices, API-driven, event-driven). - Level: Confirmed - Most recent: Any time

Language requirements:

Dutch

Level Active knowledge

English

Level Active knowledge

French

Level Active knowledge