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Gary SextiusGS

Gary Sextius

Expert Infrastructure Architect Cloud

€650/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Gary

Cloud, Systems & Networks Expert with 15+ years of experience.

I help companies modernize, secure, and optimize their IT infrastructure, with a clear goal: high-performing, reliable, and scalable systems to support their growth.

Over the course of my missions, I have developed in-depth expertise in Cloud (AWS/Azure), cybersecurity, and systems & network architectures, enabling me to work on transformation projects as well as critical environments.

Specifically, I help my clients to:

Migrate to the cloud securely
Strengthen the security of their infrastructures
Optimize performance and reduce costs
Implement robust and scalable architectures

My approach: combining technical expertise with strategic vision to offer sustainable solutions adapted to business challenges.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • GS Consulting
    IT Director – Systems & Networks
    CONSULTING AND AUDITS
    February 2023 - Today (3 years and 6 months)
    Baie-Mahault, Guadeloupe
    I help companies manage, secure, and evolve their IT infrastructure, with an approach focused on performance, reliability, and cost optimization.

    As IT Director, I lead strategic projects, manage technical teams, and implement robust infrastructures capable of supporting business growth and objectives.
    IT Strategy & Digital Transformation Systems & Network Infrastructure Management Management IT Project Management Cybersecurity & Risk Management
  • Antiane
    Technical Account Manager
    DIGITAL AND IT
    November 2021 - Today (4 years and 9 months)
    Baie-Mahault, France
    As a Technical Account Manager, I assist my clients in optimizing and securing their IT infrastructure, with a clear goal: to improve their performance and reduce risks.

    I am involved in both technical and strategic aspects, leading a team of systems & network administrators and technicians to ensure a reliable, responsive service aligned with business needs.

    My approach is based on understanding client needs, anticipating practices, and implementing sustainable solutions.
    Management Pre-sales Project Management Monitoring Network Security
  • Antiane
    System & Network Administrator
    DIGITAL AND IT
    September 2014 - November 2020 (6 years and 2 months)
    Paris, France
    System & Network Administrator with over 14 years of experience, specializing in the management, security, and optimization of IT infrastructures.

    I work on complex environments to ensure the availability, performance, and reliability of systems and networks.

    My expertise notably covers:
    – System administration (Linux / Windows)
    – Network infrastructure management
    – IT environment security
    – Deployment and optimization of cloud solutions

    Results-oriented, I implement robust and sustainable solutions, enabling companies to gain efficiency while reducing technical risks.
    Microsoft Azure SonicWall Acronis Cloud AWS EC2 3CX

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Education

  • MASTER IN COMPUTER SCIENCE, NETWORKS AND SECURITY SPECIALIZATION
    ITIC
    2013
  • BACHELOR'S DEGREE IN COMPUTER SCIENCE, NETWORKS AND SECURITY SPECIALIZATION
    Université Paris-Est Créteil
    2011

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