System / Infrastructure Architect

Expanding steadily since its launch in 2003, the ACENSI group is an IT consultancy firm, well known for their technical and functional know-how, who specialize in Telecommunications, Media and Financial Markets, as well as in the Energy industry. ACENSI guides businesses in evolutionary IT projects from the initial strategies through to their realization (Management and Project management, Development, Design and Implementation, Infrastructure). From its original focus on technical engineering and Business Analysis, ACENSI has developed new areas of expertise in Human Resource Management Systems, Business Intelligence, e-learning and Client Relationship Management. Dynamism, enthusiasm and social development are all valued at ACENSI, allowing our clients to benefit from consultants with a true blend of talents. ACENSI BELGIUM is looking for his client a System/Infrastructure Architect Mission Overview We are looking for an experienced IT System Architect to support the operational takeover of approximately 100 Commercial Off-The-Shelf (COTS) applications as part of a large-scale application outsourcing program. The architect will play a central role within the takeover team by evaluating proposed implementations, defining deployment approaches, and ensuring alignment with enterprise standards. Where deviations are required, the architect will guarantee that comprehensive documentation is provided to ensure smooth operational support and maintenance. The role requires close collaboration with technical administrators, project stakeholders, and operational teams to ensure successful deployment, transition, and long-term service management.

Key Responsibilities
Architecture & Design
• Define installation processes for COTS applications.
• Define deployment standards and target architectures (standalone VMs, containerized deployments, etc.).
• Prepare infrastructure documentation required for service deployment.
• Create technical application ID Cards.
• Conduct technical impact assessments and produce evaluation reports.
• Define and document deployment architectures. Coordination & Governance
• Coordinate and validate the work of system administrators during implementation activities.
• Coordinate multiple technicians involved in deployment activities.
• Ensure maintenance procedures are properly applied.
• Continuously assess technical procedures and propose improvements.
• Provide a consolidated technical view across all project domains. Operational Transition
• Support the service takeover project by defining and implementing all activities required to operationalize services.
• Ensure successful transition to service maintenance and operational management.
• Guarantee adequate documentation for operational follow-up. Required Skills & Experience Architecture & Infrastructure
• Strong experience in complex IT environments, including architecture, integration, and infrastructure.
• Advanced knowledge of Linux and Windows system administration.
• Strong understanding of application hosting environments and database systems.
• Knowledge of virtualization platforms such as VMware ESX, vCenter and related technologies.
• Experience defining and documenting deployment architectures. Networking & Security
• Deep knowledge of networking concepts and network security mechanisms.
• Knowledge of system security best practices.
• Experience with vulnerability management.
• Strong understanding of authentication and identity systems: o Active Directory (AD). o LDAP. o OAuth2. o OpenID. o FAS. Containers & Automation
• Experience with OpenShift and containerization technologies.
• Knowledge of Kubernetes is a plus.
• Experience with Ansible automation.
• Knowledge of Terraform.
• Basic scripting knowledge (Python and PowerShell). Modeling & Documentation
• UML.
• Network Diagrams.
• ArchiMate.
• Technical maintenance procedures and operational documentation. Personal Competencies
• Ability to evaluate multiple implementation options and present advantages and disadvantages.
• Strong coordination and leadership skills.
• Ability to maintain a global view of complex technical environments.
• Continuous improvement mindset.
• Capable of identifying innovation opportunities while balancing operational priorities. Required Skills
• IT Systems Architecture.
• Complex IT Environment Management.
• Architecture & Integration.
• Operational Excellence.
• Process Improvement.
• Linux.
• Windows.
• Ansible.
• Terraform.
• Kubernetes.
• OpenShift.
• Python.
• PowerShell.
• Vulnerability Management.
• Network Security.
• Identity & Access Technologies. Languages
• French: Native.
• English: Active knowledge.
• Dutch: Passive knowledge.