Senior System Administrator responsible for managing and maintaining enterprise IT infrastructure, Microsoft 365 environments, endpoint security, cloud platforms, networking, storage, backup, and disaster recovery operations.
Responsibilities
Manage enterprise IT infrastructure, including Windows Server 2012-2022 environments
Administer Active Directory, Forest and Domain Management, DNS, DHCP, DFS, Group Policy, WSUS, PKI, IAS/NPS, and File and Print Services
Perform server administration, operating system management, patching, migrations, cloning, capacity planning, health checks, and lifecycle management
Manage VMware vSphere and Microsoft Hyper‑V environments, including VM provisioning, migration, cloning, snapshots, HA clusters, and resource optimisation
Administer Microsoft 365 services, including Exchange Online, Intune, Entra ID, Defender, Purview, Teams, SharePoint Online, OneDrive, and Windows Autopilot
Dans le cadre du partenariat technologique et d’innovation entre Alten et un acteur majeur du secteur ferroviaire, nous recherchons un(e) ingénieur(e) essais systèmes ferroviaires.
Responsibilities
Préparer les essais : dossiers d’intervention, demandes d’autorisation de travaux et d’essais, procédures et cahiers d’essais pour les zones concernées
Exécuter les essais du pilotage automatique embarqué, en voie d’essai comme en ligne, sur les matériels neufs et de série
Réaliser les essais du système de communication filaire et WiFi, ainsi que ceux de la plateforme de virtualisation, des interfaces externes, de la supervision et de la cybersécurité
Conduire les essais de migration et de commutation : mise en route des équipements de signalisation, systèmes de basculement, raccordement au système existant et contrôle du câblage
Mener les essais dynamiques d’interopérabilité entre lignes, à basse et haute vitesse
Senior Network Security Engineer responsible for designing, implementing, securing, and operating enterprise firewall and network security infrastructure across global environments.
Compensation
$152,000.00 - $208,500.00
Responsibilities
Design, implement, and support global Palo Alto Networks firewall infrastructure
Architect and govern enterprise firewall rule structures and policy hierarchy
Lead firewall rule base optimization and migration
Develop operational standards, runbooks, health checks, KPIs
Integrate security platforms with SIEM/XDR/SOAR solutions
Requirements
Bachelor's Degree in Computer Science, Engineering, Information Technology, Cybersecurity, or related field
The Network Operations Center Supervisor manages a team of NOC analysts across shifts, overseeing network devices, servers, and applications to ensure incidents are resolved within SLAs.
Responsibilities
Manage a team of NOC analysts across multiple shifts
Onboard new hires, conduct ongoing technical training, and mentor staff
Conduct regular performance reviews
Act as the primary escalation point for critical outages, coordinating bridge calls
Route complex issues to Tier 3 engineering, telecommunications vendors, or third-party service providers
Requirements
Bachelor's/College Degree in Computer Science, Electronics Engineering or equivalent work experience in an engineering field
As a Senior Network Engineer, you’ll support the Army National Guard (ARNG) on the GECOS program, an IT Service Management contract covering the operation, modernization, and growth of ARNG’s global IT services.
Locations (2)
Falls Church, Virginia, United States
Arlington, Virginia, United States
Compensation
$135K – $150K
Responsibilities
Configure, secure, and maintain a large enterprise Cisco and Palo Alto environment
Serve as a senior engineer on architecture projects and work directly with senior military and government leadership
Configure, manage, and maintain physical and virtual infrastructure, including Cisco routers, layer 3 switches, firewalls, and Palo Alto IDS/IPS
Perform off-hours maintenance and support 24x7 operations of a large enterprise infrastructure according to established schedules and best practices
Implement and maintain DISA STIG baselines as the quarterly releases come out
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