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Nabil K.NK

Nabil K.

Independent Network & Security Consultant

€650/day
Luxembourg, LU
15+ years

Average response time: 1 hour

About Nabil

Network and security consultant, 25+ years, mostly in environments where downtime and breach are equally unacceptable — banking, central infrastructure, EU institutions.

The last five years have been EMEA technical consulting for Dataminr (formerly ThreatConnect): threat intelligence platform integration, playbook engineering, SSL/cert management, API debugging, and customer escalation work across European clients.

Earlier: senior network and security engineering at Mitsubishi UFJ Bank, Société Générale, BGL BNP Paribas, BCE/RTL, CLDN, the European Parliament, and 9 years at CSC.

Comfort zones:
— Network architecture and operations (Cisco, Juniper, Fortinet — CCNA, JNCIA, NSE 1–4)
— Threat intelligence stacks and SOC tooling
— Migration, integration, and incident-response work that crosses team boundaries
— GDPR-grounded security reviews

Master's in Mathematics, Sorbonne (2003).

Operate B2B through Redbird FZE — clean invoicing, EU bank, EU resident.

Remote engagements only.

Working languages: English, French (bilingual), Arabic (professional).
  • English

    Fluent

  • Arabic

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Freelance / EMEA
    Independent Network & Security Consultant
    January 2020 - Today (6 years and 6 months)
    Luxembourg-based consultant delivering network and security engineering to enterprise and institutional clients across EMEA (banking, public sector, consulting, and technology), through recurring remote and on-site engagements in 10+ countries. All client engagements covered by NDA —
    – Network and security architecture advisory: L2/L3 design, segmentation strategy, and migration planning for enterprise customer environments – Implementation and integration of Cisco-based network access control (ISE), firewall policy management (AlgoSec), and secure LAN/WAN platforms – Production troubleshooting and incident response across multi-site environments, including SSL/TLS certificate operations, PostgreSQL and messaging infrastructure (ActiveMQ) maintenance – Firewall, IAM, and segmentation policy reviews in regulated contexts (ISO , CSSF banking, EU institutions) – Vendor coordination (Cisco, Fortinet, Palo Alto, Juniper) and partner enablement on network and security workflows – Automation of recurring network and security operations (Python, Bash, PowerShell) – Documentation, knowledge transfer, and customer onboarding across short- and long-term engagements
    Threat Intelligence Network Architecture Network Security
  • CLDN
    Senior Network Administrator
    November 2019 - May 2021 (1 year and 6 months)
    role; independent consulting activity started in parallel in .
    – Designed and operated enterprise network and security infrastructure across multi-site environments – Cisco, Fortinet, and Juniper integration for high-availability operations – Security controls deployment, incident response, and downtime reduction on critical infrastructure – Comprehensive documentation of configurations and protocols for audit and continuity
  • Mitsubishi Bank
    Senior Network Engineer
    January 2018 - October 2019 (1 year and 9 months)
    – Led network and security infrastructure design, implementation, and hardening in an international banking environment
    – Cisco, Fortinet, and Juniper deployments optimizing performance and resilience – Point of Contact for Wi-Fi implementations across banking facilities – Troubleshooting and documentation for continuous operations and regulatory review

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Education

  • Cisco Certified Network Associate
    Cisco Certified Network Associate
  • Juniper Networks Certified Associate
    JNCIA
    Juniper Networks Certified Associate

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