Saidou DIA

Systems, Network & Security Administrator

Salaire / Taux journalier

Paris, France

Freelance, ouvert au CDI

Peut venir sur site

Expertises

DevOps

Langues

Anglais

À propos

Introduction

Systems & Network Security Administrator with 5+ years managing enterprise IT infrastructure at TotalEnergies and ENGIE. Expert in Azure/AWS cloud deployments, Active Directory, and security compliance with proven success reducing deployment times and optimizing system performance. Ready to secure and streamline your IT operations.

Liens

Expérience de travail

Systems, Network & Security Administrator

Quobly

mai 2026 - juil. 2026

3 mois

Grenoble, France

• Administration of Windows / Linux environments, Active Directory, Microsoft 365 and Exchange Online, including user accounts, groups, licenses and access rights. • Management and security of identities and access: MFA (Proton / LockSelf), privileged accounts and access rights. • Administration and security of remote access through Stormshield VPN. • Administration of collaboration and internal services: Nextcloud, Mattermost, BlueSpice and Zammad. • Administration of user and mobile devices: workstations, Samsung Knox, docking stations and peripherals. • Management of network and Wi-Fi access through UniFi. • Participation in hardening and tiering projects to strengthen infrastructure security and protect privileged accounts. • Creation and formalization of technical administration procedures, including user onboarding and offboarding processes. • Participation in the resolution of incidents and user requests. TECHNICAL PROJECT – VIRTUALIZED INFRASTRUCTURE • Design and administration of an enterprise infrastructure – independently implemented Designed a VLAN-segmented network architecture and configured trunking on Cisco / Aruba. • Deployed and administered Proxmox VE, including network bridges and VLAN-aware configuration. • Deployed a second Active Directory domain controller (AD02) and validated directory replication. • Automated administration tasks using PowerShell. • Implemented GPOs, Windows hardening, NTP synchronization and update management. • Implemented Proxmox Backup Server (PBS) for infrastructure backup. • Deployed and configured Centreon for infrastructure monitoring. • Performed infrastructure validation using repadmin, dcdiag, network tests and VLAN connectivity checks. • Documented the infrastructure architecture and created technical procedures.

Labs techniques – Infrastructure systèmes, réseaux & sécurité

Home

déc. 2025 - avr. 2026

5 mois

Paris, France

Skills development and hands-on labs in systems, network, and security administration: virtualization, Windows Server / Active Directory, Cisco networking, PowerShell, security, and troubleshooting.

Systems, Network & Security Administrator

IPREC - Formations IT

avr. 2025 - nov. 2025

8 mois

Paris, France

📜 Training leading to the Professional Certification "IT Project Coordinator – Cloud Infrastructure" (Level 6 – EU), registered with the RNCP by France Compétences (21/12/2023 – updated 28/11/2024). Key skills developed: • System administration (Windows & Linux), Active Directory, virtualization (VMware, Hyper-V) • Cloud computing: Azure, AWS, GCP – automated deployments, cloud security, resource management • Scripting (PowerShell, Bash), monitoring (Zabbix, Splunk), log management • Network security: firewalls, GDPR compliance, IT security best practices • IT architecture, automation with Git & scripting • Methodologies: DevOps, Agile, ITIL – technical project management 💼 Actively seeking an internship between September 18 and November 13, 2025, to apply and expand these skills in a professional environment.

IT Consultant

TotalEnergies

mai 2023 - oct. 2024

1 an 6 mois

Paris La Défense

Administration: • Active Directory, Microsoft Azure, Microsoft 365: Teams, OneDrive, SharePoint, Exchange. • Deploy and Manage Devices with Autopilot and Intune : Deploy Windows devices via Autopilot, reducing setup times and ensuring seamless integration. Use Intune to manage security policies, updates, and applications, ensuring compliance and optimal security across all devices. • Intranet services: account management including creation, deletion, and updates. • Data backup solutions: PPDM Power Protect Data Manager(Dell), Data Protector Manager, Keepit (Exchange, OneDrive, Groups & Teams, SharePoint) . • Systems management with Microsoft Endpoint Manager SCCM, Citrix and Citrix Cloud (DaaS). • NTR X NICE : managing, configuring, maintaining, and troubleshooting voice recording systems. • Linux : Maintaining Networking, Systems, Services, Systems Updates and Disk Management. • Log and Performance Monitoring: Expertise with Splunk for log collection, monitoring, and analytics. • End-User Experience Monitoring (EUEM) : Leveraging Nexthink to analyze and improve the digital experience of end-users. • Cloud Security : Managing and implementing Zscaler for secure cloud access and network security. Support and Asset management: • Remote and on-site resolution of user incidents. • Supervising the integration and disintegration process, ensuring that new employees have the necessary equipment and system access, and securely offboarding departing employees. • Setting up video conference rooms, providing support, train users on BlueJeans and Teams. • Current inventory (by ITOP), order, and subscription management, including supplier after-sales service. • CMDB management of mobile devices, iPhones, Nomad, Surface Pro, Dell laptops. • Management and disposal of IT equipment.

IT Administrator

ENGIE

sept. 2022 - mai 2023

9 mois

92400 Courbevoie, France

• Provide first and second-level IT support to employees, efficiently resolving technical issues. • Service Now: Diagnose, ticket creation, and issue resolution. • AD, Azure AD: Manage creation, deletion, and modification of user and group accounts. • Microsoft 365: Manage Outlook, OneDrive, SharePoint, Teams, OneNote, Exchange. • Microsoft Intune: Configure and deploy smartphones and tablets (Android, iOS, iPad), as well as install and configure business applications. • Handle the reception, unboxing, preparation, and distribution of laptops to users.

System Administrator

Sykes Enterprises Berlin GmbH & Co. KG

sept. 2020 - juil. 2022

1 an 11 mois

Berlin(10997)

• Resolution of first and second-level issues with ticket management in Jira. • Remote system support and maintenance using tools such as SCCM, RDP, and Teams. • User account management in Windows Active Directory and adjustment of security settings. • Exchange tasks administration: creation and management of distribution lists, setup of shared mailboxes, and configuration of MS Office 365 services (OneDrive, SharePoint, Teams), including meeting rooms. • Installation and configuration of VPN clients, particularly Pulse Secure.

Technical Support Specialist

Mairie PARIS (75013)

oct. 2019 - août 2020

11 mois

Paris75013

• Perform diagnosis and maintenance of desktop computers, troubleshoot printing issues, and provide first-level technical support. • Set up, install, and deploy hardware and software for end-users in accordance with approved requests. • Prepare and reinstall the Windows 10 operating system on new and existing computers. • Maintain accurate records of hardware repairs, upgrades, software installations, equipment assignments, and recent acquisitions.

Technical Support Agent

AXA

janv. 2019 - oct. 2019

10 mois

Région de Paris, France

• Perform on-site repairs and conduct preventive maintenance on computers and peripherals. • Diagnose and resolve hardware issues, assemble computers from scratch, address technical concerns, and install software. • Manage user data backup and restoration. • Enhance user awareness and effectively communicate information.


Formation

Udemy Alumni

2025 - Présent

1 an 9 mois

Udemy Alumni

2023 - Présent

3 ans 10 mois

Udemy Alumni

Ultimate AWS Certified Developer Associate 2023 DVA-C02

2023 - Présent

3 ans 1 mois

Udemy Alumni

2024 - Présent

2 ans 8 mois

Udemy Alumni

2024 - Présent

2 ans 7 mois

Sup de Vinci / IPREC

Systems, Network & Security Administrator

2025 - 2025

9 mois

Sup de Vinci / IPREC

2018 - 2019

2 ans

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