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ThoughtLabs Belgium

Network Security / Firewall Services

ThoughtLabs Belgium
Luxembourg · Contract · Not Applicable

🧭 Key Responsibilities

1️⃣ Incident & Problem Management (Level 2 Scope)

  • Handle escalated incidents from Level 1
  • Troubleshoot complex firewall issues (routing, NAT, clustering, performance)
  • Perform deep packet analysis when required
  • Conduct root cause analysis (RCA)
  • Identify recurring issues and open Problem records
  • Participate in post-mortem analysis and improvement plans
  • Participate in Level 2 on-call rotation
  • Firewall Engineering & Automation

    • Design and maintain automation for:
    • Software upgrades (CheckPoint, Fortinet, Open-Source)
    • Cluster upgrades and failover validation
    • Policy deployment pipelines
    • Backup & restore procedures
    • Implement infrastructure changes through:
    • Ansible / AWX
    • Git-based workflows
    • CI/CD pipelines
    • Ensure infrastructure changes are reproducible and version-controlled
    • Contribute to Git repositories and review pull requests
    • Maintain configuration as code principles

    Configuration Governance & CMDB Integrity

    • Ensure all firewall objects and rules align with CMDB data
    • Enforce Source of Truth model (e.g., NetBox or equivalent)
    • Avoid manual configuration drift
    • Implement validation checks before deployment
    • Contribute to compliance reporting

    Firewall Platform Expertise

    🔐 Check Point Software Technologies

    • R8x architecture
    • Management Server / MDS
    • SmartConsole
    • ClusterXL
    • Policy installation & troubleshooting

    🔐 Fortinet

    • FortiGate
    • FortiManager
    • HA clusters
    • Security Fabric integration

    🔐 Open-Source Firewalls

    • nftables / iptables
    • pfSense
    • OPNsense
    • Strong understanding of Linux networking stack


    5️⃣ DevOps & Engineering Practices

    • Infrastructure as Code mindset
    • CI/CD pipeline integration
    • Unit testing for automation scripts
    • Use of Git branching strategies
    • Observability integration (logs, metrics, alerts)
    • Secure coding practices for automation


    6️⃣ Upgrade & Lifecycle Management

    • Plan and execute:
    • Major version upgrades
    • Hotfix deployment
    • Security patching
    • Automate pre-checks and post-checks
    • Maintain upgrade playbooks
    • Document rollback strategies


    7️⃣ Security & Compliance

    • Ensure firewall configurations align with security policies
    • Support audit evidence collection
    • Support vulnerability remediation
    • Ensure secure configuration standards, and best practices
    • Participate in security hardening initiatives


    🛠 Technical Skills Required

    Mandatory

    • 5+ years in enterprise firewall engineering
    • Strong knowledge of:
    • CheckPoint R8x
    • FortiGate
    • Solid understanding of:
    • TCP/IP
    • Routing (BGP, OSPF basics)
    • NAT
    • VPN technologies
    • Experience with Linux networking
    • Experience with automation (Ansible preferred)
    • Git proficiency
    • Strong troubleshooting skills


    Nice to Have

    • Experience with containerized firewall deployment
    • API-driven firewall configuration
    • Experience with CI/CD tools (GitLab CI, etc.)
    • Experience integrating firewalls with cloud (AWS)
    • Experience in high-availability architectures


    🧠 Soft Skills

    • Analytical mindset
    • Ability to perform structured RCA
    • Autonomous and proactive
    • Strong documentation discipline
    • Ability to mentor Level 1 engineers
    • Clear communication during incident bridges

    Key Skills

    Ranked by relevance

    firewall linux git gitlab ci firewalls fortinet ansible devops server gitlab cloud ospf cicd bgp nat
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    Posted
    Apr 08, 2026
    Type
    Contract
    Level
    Not Applicable
    Location
    Luxembourg

    Industries

    Government Administration Government Relations Services

    Categories

    Information Technology

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