Network & Security Engineer - PKI - Brussels - ASAP Start - Freelance / CDI at act digital

Brussels, Brussels-Capital, Belgium -

Full Time

Start Date

Immediate

Expiry Date

06 May, 26

Salary

0.0

Posted On

05 Feb, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Network Security Design, Implementation, Network Monitoring, Performance, Troubleshooting, Advanced Technical Support, Routing, Switching, Firewalls, VPN Technologies, Cloud Security, Incident Detection, Response, Automation, Scripting, Communication, Problem-Solving

Industry

IT Services and IT Consulting

Description

Company Description Our Client is seeking a Senior Network Security Engineer to strengthen its cybersecurity posture and ensure the protection, performance, and reliability of its network infrastructure. You will play a key role in designing, securing, monitoring, and troubleshooting critical network components to safeguard the organisation against cyber threats. This role combines network engineering, security operations, incident response, and infrastructure hardening, in close collaboration with internal IT teams. Job Description Key Responsibilities 1. Network Security Design & Implementation Design, configure, and maintain security solutions (firewalls, VPNs, proxies, load balancers, WAF, etc.). Deploy protection mechanisms to prevent intrusions and unauthorized access. Contribute to the continuous improvement of network security architecture. 2. Network Monitoring & Performance Continuously monitor network activity to detect anomalies or attacks. Perform regular security audits and vulnerability assessments. Analyse alerts and logs, responding to incidents in real time. 3. Troubleshooting & Advanced Technical Support Investigate, diagnose, and resolve complex network and security issues. Provide Level 3 support and collaborate with technical and non‑technical teams. Participate in incident response and post‑incident remediation activities. Qualifications Technical Skills Required Network & Routing Strong understanding of routing/switching (static routing, OSPF, BGP). Experience with routers, switches, WiFi, DNS, TACACS, ISP connectivity, ExpressRoute, and related technologies. Security Technologies Expertise with: Firewalls (e.g. Palo Alto, Fortinet, CheckPoint, Cisco ASA) VPN technologies Forward & reverse proxies Load balancers (e.g. F5, Citrix) WAF & reverse proxy solutions Cloud & Secure Access Understanding of cloud security principles (data protection, access control). Knowledge of Zero Trust Network Access (ZTNA). Incident Detection & Response Ability to detect threats, manage incidents, and support vulnerability remediation. Experience with threat analysis and security operations. Automation & Scripting Ability to automate tasks using scripting languages. Operating Systems & Protocols Familiarity with network‑related operating systems and encryption standards. Soft Skills Strong communication skills with technical and non‑technical stakeholders Excellent problem‑solving abilities Ability to manage pressure and multiple priorities Leadership and mentoring capabilities Autonomy combined with strong teamwork Curiosity and openness to new technologies High attention to detail and quality Language Requirements Excellent level in French or Dutch Good level in the second national language Good command of English Certifications (Nice to Have) Security/network certifications such as: CCNP Security Palo Alto PCNSE Fortinet NSE F5 certifications CISSP Evidence of ongoing professional training in network security Additional Information Additional Information Candidates must have a valid work and residence permit for Belgium (if non-EU) The client values diversity and inclusion, offering a positive work culture focused on well-being Opportunity to contribute to innovative, ground-breaking technologies in the energy sector

Responsibilities

The role involves designing, securing, monitoring, and troubleshooting critical network components to protect the organization against cyber threats. You will collaborate closely with internal IT teams to enhance the cybersecurity posture.