Network & Security Engineer Expert

keystone-solutions; Brussel Hoofdstad; Sur place; EUR 66 960 - 100 440; Plein temps

Résumé du poste

Keystone Solutions is seeking a Network & Security Engineer Expert for a consultancy mission at a client site in the Brussels region. You will design, implement, and secure diverse network infrastructures, including Wi-Fi and telephony, while contributing to documentation and operational automation.

The role requires autonomy, client-facing capabilities, and on-call availability. Proficiency in technical English is essential; travel to client sites is expected.

Qualifications

• Automation experience with scripting and Ansible.
• MSS Office tools (O365, Visio) proficiency.
• Expertise in Cisco networks and network equipment.
• Strong knowledge of TCP/IP, IPv4/IPv6, VLAN, MPLS, VPN/IPsec, dynamic routing.
• Network security: firewalls (Fortinet, Palo Alto) and NAC/IEEE 802.1X.
• DNS, DHCP, IPAM/DDI administration.
• Wireshark and PRTG for monitoring and diagnostics.
• VMware vSphere virtualization experience.

Responsabilités

• Define and implement standardized, automated network processes.
• Produce high-level and low-level design documents.
• Contribute to network infrastructure projects and security solutions.
• Perform network audits and identify optimization opportunities.
• Stay updated on developments and new infrastructure requirements.

Connaissances

Scripting

Cisco networks

Network protocols

Network security

Infrastructure services

Network monitoring

Virtualization

English proficiency

Outils

Ansible

O365

Visio

WLC/NAC/DCNA tools

Wireshark

PRTG

VMware vSphere

Description du poste

Mission Overview

Keystone Solutions is seeking a Network & Security Engineer Expert for a consultancy mission at a client site. In this role, you will work alongside various infrastructure, application, security, and telephony teams, responsible for the design, implementation, maintenance, and security of diverse network infrastructures, Wi-Fi, security, and telephony systems.

Key Responsibilities

• Contribute to the definition and implementation of standardized and automated processes to optimize operations and enhance team efficiency.
• Provide significant value to infrastructure projects by producing necessary technical documentation (High-Level Design, Low-Level Design, DAT) for management and maintenance.
• Engage in diverse projects such as the implementation or improvement of network infrastructures, establishment of security solutions, and conducting network audits for clients.
• Maintain an active watch to identify developments and opportunities for infrastructure improvements.
• Participate in the production of new network and security requirements.

Candidate Profile

The ideal candidate must be flexible and autonomous, capable of traveling to client sites in the Brussels region and participating in on-call roles. You should demonstrate rigor, precision, proactivity, adherence to schedules, client-oriented solutions, and strong analytical skills. Proficiency in technical English is essential.

At Keystone Solutions, we pride ourselves on our consultancy nature, offering dynamic projects that provide a broad learning experience and opportunities for career growth.

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

Duration

03/08/2026 - 31/03/2027 8 months (full time)

Skills required

• Automatisation: scripting, Ansible - Level: Intermediate - Most recent: This year
• MS tools (O365, Visio) - Level: Advanced - Most recent: This year
• Réseaux Cisco: administration et exploitation de commutateurs (Catalyst, Nexus), contrôleurs Wi-Fi (WLC), Cisco DNA Center (DNAC) et outils de supervision associés. - Level: Expert - Most recent: This year
• Réseaux et protocoles: TCP/IP, IPv4/IPv6, VLAN, MPLS, VPN/IPsec, routage dynamique (BGP, OSPF, EIGRP), SD-WAN. - Level: Expert - Most recent: This year
• Sécurité réseau: administration de pare-feu (Fortinet, Palo Alto), contrôle d'accès réseau (NAC, IEEE 802.1X), solutions F5 (LTM/APM) - Level: Advanced - Most recent: This year
• Services d'infrastructure réseau: DNS, DHCP, IPAM/DDI. - Level: Advanced - Most recent: This year
• Supervision et diagnostic: Wireshark (analyse avancée), PRTG - Level: Advanced - Most recent: This year
• Virtualisation: VMware vSphere - Level: Intermediate - Most recent: 1 to 3 years ago

Language requirements

• Dutch - Level Elementary proficiency
• English - Level Full professional proficiency
• French - Level Native or bilingual proficiency