You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Marlis Hermas Koualet MakasiMH

Marlis Hermas Koualet Makasi

Network & IT/OT Security Architect | CCNP | Cyber

€600/day
Marseille, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Marlis Hermas Koualet

Do you need to secure, evolve, or deploy your network infrastructure, but lack the expertise to cover the entire cycle—from initial audit to production? I design and deploy network and security architectures for demanding environments: critical infrastructures, multiple sites, hybrid LAN/WAN constraints.

What sets me apart: a rare dual expertise—advanced technical architecture (CCNP Design, Fortinet, IT/OT segmentation) and end-to-end project management, from quoting (BoM, pre-sales) to final installation. I don't just propose an architecture on paper: I also know how to price it, defend it to a client, and oversee its deployment to completion.

I typically work on: network and security infrastructure audits, target architecture design (HLD/LLD), Fortinet firewall deployment and hardening, IT/OT segmentation for industrial or critical environments, IP core network migration, test plans and equipment validation, technical responses to tenders.

Recent references: securing over 20 sites for an international fleet (critical network segmentation), migration of the IP core network for a telecom operator, network/security redesign for banking and institutional players.

Available for one-off or recurring missions,
  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • CMA-CGM
    Consultant – Network Security Architect
    TRANSPORTATION
    October 2025 - Today (10 months)
    Marseille, France
    Multi-Technology Design & Architecture: Design and engineering of network infrastructures for global agencies and ship fleets, integrating hybrid LAN/WAN and satellite link (Satcom) constraints. • Cybersecurity & IT/OT Security: Hardening of global architectures and implementation of strict network segmentation to isolate and protect critical industrial systems (navigation systems) from business traffic. • End-to-End Project Engineering: Full management of the project lifecycle, from feasibility studies and writing of macro (High-Level Design - HLD) and detailed (Low-Level Design - LLD) architecture documents to operational deployment.
    Network Infrastructure Audit Network Architect OT/IT Segmentation Information Security Project Management
  • SFR
    Consultant Network IP Security Validation Engineer
    TELECOMMUNICATIONS
    September 2023 - September 2025 (2 years)
    Versailles, France
    Migration Management: Active contribution to the strategic project of migrating infrastructures to the target architecture of SFR's IP core network. • Validation Engineering (QA): Design, writing, and execution of test and validation plans for the approval of new equipment and routing protocols. • Vulnerability Management & Cybersecurity: Analysis of security vulnerabilities, critical review of vendor Release Notes, and definition of remediation plans. • Vendor Relationship Management: Technical interface with equipment manufacturers (Vendor Management) for tracking, managing, and obtaining software patches.
    VPN IPSEC IP/MPLS MP-BGP IPv6 SD-WAN
  • ACCEL Technology
    Technical Project Manager Pre-Sales Engineer
    DIGITAL AND IT
    June 2022 - August 2023 (1 year and 2 months)
    Dakar, Senegal
    • Pre-Sales Engineering: Technical management of tender responses, design of target architectures, and writing of technical scoping documents (DAT). • Major Market Wins: Conducted the network infrastructure audit that directly led to winning the LAN/Security redesign contract. • Project Direction & Implementation: Responsible for the operational deployment and integration of critical infrastructure solutions: o Public Sector: Network Data Center of Senegalese Customs. o Banking Sector: Global LAN, Wi-Fi, and Security redesign for the Islamic Bank. o Private & Internal Sector: Design and deployment of the LAN/Wi-Fi network and security for ACCEL's Data Center.
    Network Infrastructure Audit Network Architect Information Security HLD/LLD Voice over IP (VoIP)

Recommendations

Be the first to recommend Marlis Hermas Koualet

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Certifications

  • CCNP EI
    Cisco
    2022
  • CCNP Design
    Cisco
    2023

Skill set

Categories