System and Infrastructure Administrator
Core
Manage the full employee access lifecycle, provision and revoke accounts, administer Microsoft 365/Entra ID, Windows Server, Active Directory, and maintain server/virtualization infrastructure, networks, and endpoints to support daily business operations.
Role type
Senior System and Infrastructure Administrator
Builds
Corporate IT environment including user access, internal services, networks, endpoints, and core business systems
Domain
Corporate IT Operations / System Administration
Deliverable
infrastructure
Required skills
Microsoft 365/Entra ID, Active Directory, Windows Server, Group Policy, DNS, DHCP, Linux administration, TCP/IP, VLANs, routing, NAT, VPNs, Wi-Fi, firewalls, NAS, SMB, virtualization, storage systems, backup systems, Docker, GitLab CI, RBAC, MFA, SSO, endpoint security, PowerShell, Bash, Python, Ansible
Preferred skills
AWS (IAM, EC2, VPC, S3, Route 53, CloudWatch), Kubernetes, SIEM, EDR, vulnerability scanners, PKI, certificate automation, secrets-management, Microsoft Intune, ITAM/CMDB
Technologies
Microsoft 365, Entra ID, Windows Server, Active Directory, GitLab, 1C, Slack, ClickUp, Vaultwarden, Proxmox, ZFS, LVM, Docker, Kubernetes, AWS, SIEM, EDR
Responsibilities
Manage employee access lifecycle (Joiner–Mover–Leaver), provision/revoke accounts and licenses, administer servers and virtualization infrastructure, maintain office networks and security devices, monitor infrastructure and perform recovery tests, operate endpoint protection and SIEM tools, provide L2–L3 support for endpoints, manage IT asset lifecycle, maintain technical documentation and automate tasks
Seniority
Senior, hands-on IC
